/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    /* TRON Legacy Farbpalette (MCPEndOfLine-Stil) */
    --bg: #0a0a0f;
    --bg-surface: #0d0d14;
    --bg-input: #0a0a0f;
    --bg-hover: #16161f;
    --bg-panel: #111119;
    --border: #1e1e2e;
    --border-glow: rgba(0, 212, 255, 0.2);
    --text: #bff8ff;
    --text-muted: #6a6a8a;
    --accent: #00d4ff;
    --accent-hover: #3de6ff;
    --accent-dim: rgba(0, 212, 255, 0.1);
    --accent-border: rgba(0, 212, 255, 0.3);
    --orange: #ff8c00;
    --orange-dim: rgba(255, 140, 0, 0.1);
    --user-bubble: rgba(0, 212, 255, 0.08);
    --bot-bubble: #111119;
    --error: #ff4444;
    --success: #00ff88;
    --radius: 8px;
    --header-h: 56px;
    --input-h: 72px;
    /* Glow-Effekte */
    --glow-cyan: 0 0 15px rgba(0, 212, 255, 0.3), 0 0 30px rgba(0, 212, 255, 0.1);
    --glow-cyan-sm: 0 0 8px rgba(0, 212, 255, 0.25);
    --glow-cyan-lg: 0 0 30px rgba(0, 212, 255, 0.4), 0 0 60px rgba(0, 212, 255, 0.15);
    --glow-orange: 0 0 15px rgba(255, 140, 0, 0.3), 0 0 30px rgba(255, 140, 0, 0.1);
    /* Schriftarten */
    --font-display: 'Orbitron', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

/* Light theme overrides (abgeschwächte TRON-Variante) */
[data-theme="light"] {
    --bg: #f0f4f8;
    --bg-surface: #ffffff;
    --bg-input: #e8ecf1;
    --bg-hover: #dde3ea;
    --bg-panel: #f5f7fa;
    --border: #c8d0da;
    --border-glow: rgba(0, 150, 200, 0.15);
    --text: #1a2030;
    --text-muted: #5a6578;
    --accent: #0088aa;
    --accent-hover: #006688;
    --accent-dim: rgba(0, 136, 170, 0.08);
    --accent-border: rgba(0, 136, 170, 0.25);
    --user-bubble: #e0f4fa;
    --bot-bubble: #ffffff;
    --error: #cf222e;
    --success: #1a7f37;
    --glow-cyan: none;
    --glow-cyan-sm: none;
    --glow-cyan-lg: none;
}

/* Light theme — login background */
[data-theme="light"] #login-screen {
    background: radial-gradient(ellipse at center, #e8ecf1 0%, #f0f4f8 70%);
}
[data-theme="light"] #login-screen::before,
[data-theme="light"] #login-screen::after,
[data-theme="light"] .login-grid {
    display: none;
}
[data-theme="light"] .login-box {
    background: rgba(255, 255, 255, 0.9);
    border-color: var(--border);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

/* Light theme — logo color */
[data-theme="light"] .logo pre {
    color: var(--accent);
    text-shadow: none;
}

/* Light theme — code blocks */
[data-theme="light"] .message.assistant .msg-content pre {
    background: #e4e8ee;
    border-color: #cdd3db;
}
[data-theme="light"] .message.assistant .msg-content code {
    background: #e4e8ee;
    border-color: #cdd3db;
}

/* Light theme — assistant border */
[data-theme="light"] .message.assistant {
    border-color: var(--border);
}

/* Light theme — user bubble text */
[data-theme="light"] .message.user {
    color: var(--text);
}

html, body {
    height: 100%;
    overflow: hidden;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg);
}

/* Custom Scrollbar (TRON-Stil) */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(0, 212, 255, 0.2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0, 212, 255, 0.4); }

/* Text-Auswahl */
::selection {
    background: rgba(0, 212, 255, 0.3);
    color: #e0fcff;
}

.screen { height: 100%; }

/* === Login Screen === */
#login-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: #050508;
}

/* TRON Legacy Hintergrund — Himmel + Horizont-Glow */
#login-screen::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        /* Sternen-ähnliche Lichtpunkte */
        radial-gradient(1px 1px at 10% 25%, rgba(0, 212, 255, 0.4), transparent),
        radial-gradient(1px 1px at 22% 18%, rgba(0, 212, 255, 0.3), transparent),
        radial-gradient(1px 1px at 35% 30%, rgba(0, 212, 255, 0.2), transparent),
        radial-gradient(1px 1px at 47% 12%, rgba(0, 212, 255, 0.35), transparent),
        radial-gradient(1px 1px at 62% 22%, rgba(0, 212, 255, 0.25), transparent),
        radial-gradient(1px 1px at 75% 28%, rgba(0, 212, 255, 0.3), transparent),
        radial-gradient(1px 1px at 88% 16%, rgba(0, 212, 255, 0.2), transparent),
        radial-gradient(1.5px 1.5px at 15% 35%, rgba(0, 212, 255, 0.15), transparent),
        radial-gradient(1px 1px at 55% 33%, rgba(0, 212, 255, 0.2), transparent),
        radial-gradient(1px 1px at 80% 20%, rgba(0, 212, 255, 0.3), transparent),
        /* Horizont-Glow (Cyan-Schein) */
        radial-gradient(ellipse 140% 20% at 50% 60%, rgba(0, 212, 255, 0.12) 0%, transparent 70%),
        radial-gradient(ellipse 80% 8% at 50% 60%, rgba(0, 230, 255, 0.18) 0%, transparent 60%),
        /* Himmel-Gradient */
        linear-gradient(to bottom,
            #030306 0%,
            #050510 30%,
            #06081a 50%,
            #081425 58%,
            #050510 68%,
            #030306 100%
        );
    z-index: 0;
}

/* TRON Legacy Stadt-Silhouette */
#login-screen::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background:
        /* Ferne kleine Gebäude */
        linear-gradient(to bottom, transparent 50%, #060a14 50%, #060a14 59.5%, transparent 59.5%) no-repeat 3% center / 1.2% 100%,
        linear-gradient(to bottom, transparent 48%, #070c16 48%, #070c16 59.5%, transparent 59.5%) no-repeat 5.5% center / 0.8% 100%,
        linear-gradient(to bottom, transparent 46%, #080e1c 46%, #080e1c 59.5%, transparent 59.5%) no-repeat 9% center / 1% 100%,
        linear-gradient(to bottom, transparent 49%, #060a14 49%, #060a14 59.5%, transparent 59.5%) no-repeat 11% center / 0.6% 100%,
        linear-gradient(to bottom, transparent 44%, #070c16 44%, #070c16 59.5%, transparent 59.5%) no-repeat 15% center / 1.5% 100%,
        linear-gradient(to bottom, transparent 47%, #080e1c 47%, #080e1c 59.5%, transparent 59.5%) no-repeat 20% center / 0.8% 100%,
        linear-gradient(to bottom, transparent 42%, #060a14 42%, #060a14 59.5%, transparent 59.5%) no-repeat 24% center / 1.2% 100%,
        linear-gradient(to bottom, transparent 50%, #070c16 50%, #070c16 59.5%, transparent 59.5%) no-repeat 28% center / 0.7% 100%,
        /* Vordergrund-Gebäude */
        linear-gradient(to bottom, transparent 38%, #0a1420 38%, #0a1420 59.5%, transparent 59.5%) no-repeat 6% center / 2.5% 100%,
        linear-gradient(to bottom, transparent 42%, #091220 42%, #091220 59.5%, transparent 59.5%) no-repeat 10% center / 1.8% 100%,
        linear-gradient(to bottom, transparent 34%, #0c1a2a 34%, #0c1a2a 59.5%, transparent 59.5%) no-repeat 14% center / 2.8% 100%,
        linear-gradient(to bottom, transparent 40%, #0a1624 40%, #0a1624 59.5%, transparent 59.5%) no-repeat 18% center / 2% 100%,
        linear-gradient(to bottom, transparent 30%, #0d1e30 30%, #0d1e30 59.5%, transparent 59.5%) no-repeat 22% center / 1.5% 100%,
        linear-gradient(to bottom, transparent 36%, #0b1828 36%, #0b1828 59.5%, transparent 59.5%) no-repeat 26% center / 3% 100%,
        /* Zentrale Türme */
        linear-gradient(to bottom, transparent 24%, #0e2238 24%, #0e2238 59.5%, transparent 59.5%) no-repeat 32% center / 2% 100%,
        linear-gradient(to bottom, transparent 28%, #0c1c2e 28%, #0c1c2e 59.5%, transparent 59.5%) no-repeat 35% center / 3.5% 100%,
        linear-gradient(to bottom, transparent 18%, #102840 18%, #102840 59.5%, transparent 59.5%) no-repeat 40% center / 2.5% 100%,
        linear-gradient(to bottom, transparent 32%, #0d2034 32%, #0d2034 59.5%, transparent 59.5%) no-repeat 44% center / 1.5% 100%,
        linear-gradient(to bottom, transparent 22%, #0f243c 22%, #0f243c 59.5%, transparent 59.5%) no-repeat 48% center / 2% 100%,
        linear-gradient(to bottom, transparent 26%, #0e2238 26%, #0e2238 59.5%, transparent 59.5%) no-repeat 52% center / 3% 100%,
        linear-gradient(to bottom, transparent 20%, #102840 20%, #102840 59.5%, transparent 59.5%) no-repeat 56% center / 1.8% 100%,
        linear-gradient(to bottom, transparent 30%, #0c1a2a 30%, #0c1a2a 59.5%, transparent 59.5%) no-repeat 60% center / 2.5% 100%,
        /* Rechte Seite */
        linear-gradient(to bottom, transparent 24%, #0e2238 24%, #0e2238 59.5%, transparent 59.5%) no-repeat 64% center / 2.2% 100%,
        linear-gradient(to bottom, transparent 34%, #0b1828 34%, #0b1828 59.5%, transparent 59.5%) no-repeat 68% center / 3% 100%,
        linear-gradient(to bottom, transparent 28%, #0d1e30 28%, #0d1e30 59.5%, transparent 59.5%) no-repeat 72% center / 1.5% 100%,
        linear-gradient(to bottom, transparent 38%, #0a1420 38%, #0a1420 59.5%, transparent 59.5%) no-repeat 76% center / 2.5% 100%,
        linear-gradient(to bottom, transparent 32%, #0c1a2a 32%, #0c1a2a 59.5%, transparent 59.5%) no-repeat 80% center / 2% 100%,
        linear-gradient(to bottom, transparent 40%, #091220 40%, #091220 59.5%, transparent 59.5%) no-repeat 84% center / 2.8% 100%,
        linear-gradient(to bottom, transparent 44%, #080e1c 44%, #080e1c 59.5%, transparent 59.5%) no-repeat 88% center / 1.5% 100%,
        linear-gradient(to bottom, transparent 48%, #070c16 48%, #070c16 59.5%, transparent 59.5%) no-repeat 92% center / 2% 100%,
        linear-gradient(to bottom, transparent 46%, #060a14 46%, #060a14 59.5%, transparent 59.5%) no-repeat 96% center / 1.8% 100%,
        /* Leuchtende Fenster */
        radial-gradient(1.5px 1.5px at center, rgba(0, 230, 255, 0.7), transparent) no-repeat 40.3% 28% / 3px 3px,
        radial-gradient(1.5px 1.5px at center, rgba(0, 230, 255, 0.5), transparent) no-repeat 40.8% 35% / 3px 3px,
        radial-gradient(1px 1px at center, rgba(0, 230, 255, 0.6), transparent) no-repeat 41.2% 42% / 2px 2px,
        radial-gradient(1.5px 1.5px at center, rgba(0, 230, 255, 0.5), transparent) no-repeat 48.5% 30% / 3px 3px,
        radial-gradient(1px 1px at center, rgba(0, 230, 255, 0.7), transparent) no-repeat 48.2% 38% / 2px 2px,
        radial-gradient(1.5px 1.5px at center, rgba(0, 230, 255, 0.4), transparent) no-repeat 56.3% 26% / 3px 3px,
        radial-gradient(1px 1px at center, rgba(0, 230, 255, 0.6), transparent) no-repeat 56.6% 34% / 2px 2px,
        radial-gradient(1px 1px at center, rgba(0, 230, 255, 0.5), transparent) no-repeat 52.5% 28% / 2px 2px,
        radial-gradient(1.5px 1.5px at center, rgba(0, 230, 255, 0.4), transparent) no-repeat 32.4% 30% / 3px 3px,
        radial-gradient(1px 1px at center, rgba(0, 230, 255, 0.6), transparent) no-repeat 35.8% 36% / 2px 2px,
        radial-gradient(1.5px 1.5px at center, rgba(0, 230, 255, 0.5), transparent) no-repeat 64.2% 30% / 3px 3px,
        radial-gradient(1px 1px at center, rgba(0, 230, 255, 0.4), transparent) no-repeat 68.5% 38% / 2px 2px,
        radial-gradient(1px 1px at center, rgba(0, 230, 255, 0.7), transparent) no-repeat 22.5% 36% / 2px 2px,
        radial-gradient(1px 1px at center, rgba(0, 230, 255, 0.3), transparent) no-repeat 76.8% 36% / 2px 2px,
        radial-gradient(1px 1px at center, rgba(0, 240, 255, 0.8), transparent) no-repeat 40.5% 22% / 2px 2px,
        radial-gradient(1px 1px at center, rgba(0, 240, 255, 0.6), transparent) no-repeat 48.8% 24% / 2px 2px,
        /* Horizont-Linie */
        linear-gradient(to bottom,
            transparent 59%,
            rgba(0, 212, 255, 0.06) 59.3%,
            rgba(0, 212, 255, 0.3) 59.7%,
            rgba(0, 230, 255, 0.45) 60%,
            rgba(0, 212, 255, 0.3) 60.3%,
            rgba(0, 212, 255, 0.06) 60.7%,
            transparent 61%
        ) no-repeat center / 100% 100%;
}

/* Perspektivisches Bodengitter (eigenes Element mit CSS perspective) */
.login-grid {
    position: absolute;
    bottom: 0;
    left: -20%;
    width: 140%;
    height: 42%;
    z-index: 1;
    pointer-events: none;
    perspective: 400px;
    perspective-origin: 50% 0%;
    overflow: hidden;
}

    .login-grid::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 200%;
    transform: rotateX(55deg);
    transform-origin: 50% 0%;
    background:
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 78px,
            rgba(0, 212, 255, 0.06) 78px,
            rgba(0, 212, 255, 0.06) 80px
        ),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 78px,
            rgba(0, 212, 255, 0.06) 78px,
            rgba(0, 212, 255, 0.06) 80px
        );
}

/* Glow direkt am Horizont über dem Grid */
.login-grid::after {
    content: "";
    position: absolute;
    top: -2px;
    left: 0;
    width: 100%;
    height: 30%;
    background: linear-gradient(to bottom, rgba(0, 212, 255, 0.05) 0%, transparent 100%);
    pointer-events: none;
}

/* Login-Box — TRON Legacy Panel mit Glow */
.login-box {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 420px;
    padding: 32px;
    text-align: center;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 12px;
    box-shadow:
        0 0 40px rgba(0, 212, 255, 0.08),
        0 0 15px rgba(0, 212, 255, 0.05),
        0 8px 32px rgba(0, 0, 0, 0.6),
        inset 0 0 20px rgba(0, 212, 255, 0.03);
}

#login-screen[hidden] {
    display: none;
}

/* Video-Overlay nach 3 Fehlversuchen */
.login-video-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    z-index: 9999;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-video-overlay[hidden] { display: none; }
.login-video-overlay video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #000;
}

.logo pre {
    font-family: var(--font-mono);
    font-size: 10px;
    line-height: 1.15;
    color: var(--accent);
    white-space: pre;
    display: inline-block;
    text-align: left;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.6), 0 0 30px rgba(0, 212, 255, 0.25);
}

.subtitle {
    color: var(--text-muted);
    margin: 8px 0 32px;
    font-size: 12px;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

#login-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

#login-form input {
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: rgba(10, 10, 15, 0.7);
    color: var(--text);
    font-size: 14px;
    font-family: var(--font-mono);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

#login-form input:focus {
    border-color: rgba(0, 212, 255, 0.4);
    box-shadow: var(--glow-cyan-sm);
}

#login-form button {
    padding: 12px;
    border: 1px solid rgba(0, 212, 255, 0.5);
    border-radius: 6px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent);
    font-size: 13px;
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.2s;
}

#login-form button:hover { background: rgba(0, 212, 255, 0.2); box-shadow: var(--glow-cyan-sm); }
#login-form button:disabled { opacity: 0.5; cursor: not-allowed; }

.error {
    color: var(--error);
    font-size: 13px;
    margin-top: 4px;
}

.external-warning {
    background: rgba(248, 81, 73, 0.15);
    border: 1px solid var(--error);
    color: var(--error);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
    text-align: center;
    letter-spacing: 0.5px;
}

.login-version {
    margin-top: 16px;
    font-size: 10px;
    color: var(--text-muted);
    text-align: center;
    opacity: 0.5;
    letter-spacing: 0.1em;
    font-family: var(--font-mono);
}

/* === Chat Screen === */
#chat-screen {
    display: grid;
    grid-template-columns: 280px 1fr;
    grid-template-rows: var(--header-h) 1fr;
}

/* Header spannt über alle Spalten */
header#chat-header {
    grid-column: 1 / -1;
    grid-row: 1;
}

/* Left column: 3D panel (top) + Sidebar (bottom) */
#left-column {
    grid-column: 1;
    grid-row: 2;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-right: 1px solid var(--border);
    position: relative;
}

/* 3D panel: height determined by background image aspect ratio (16:9) */
#model-panel {
    flex: 0 0 auto;
    aspect-ratio: 16 / 9;
    width: 100%;
    position: relative;
    overflow: hidden;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
}

/* Sidebar takes all remaining space */
#left-column .conv-sidebar {
    flex: 1 1 0;
    min-height: 0;
    border-right: none;
}

/* Chat-Bereich unter Header, full remaining width */
#chat-column {
    grid-column: 2;
    grid-row: 2;
}

/* === Conversation Sidebar === */
.conv-sidebar {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    background: var(--bg-surface);
    overflow: hidden;
    position: relative;
}

/* Glow-Linie am rechten Rand der linken Spalte */
#left-column::after {
    content: "";
    position: absolute;
    top: 0;
    right: -1px;
    bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, transparent, rgba(0, 212, 255, 0.2), rgba(0, 212, 255, 0.3), rgba(0, 212, 255, 0.2), transparent);
    z-index: 1;
}

.conv-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 11px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent);
    flex-shrink: 0;
}

.conv-new-btn {
    width: 28px;
    height: 28px;
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 4px;
    background: transparent;
    color: var(--accent);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}
.conv-new-btn:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: rgba(0, 212, 255, 0.6);
    box-shadow: var(--glow-cyan-sm);
}

.conv-list {
    flex: 1;
    overflow-y: auto;
    padding: 6px 8px;
}

.conv-item {
    padding: 10px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
    margin-bottom: 2px;
    position: relative;
    border: 1px solid transparent;
}
.conv-item:hover {
    background: rgba(0, 212, 255, 0.05);
    border-color: rgba(0, 212, 255, 0.1);
}
.conv-item.active {
    background: rgba(0, 212, 255, 0.08);
    border-color: rgba(0, 212, 255, 0.25);
    border-left: 2px solid var(--accent);
    box-shadow: inset 0 0 12px rgba(0, 212, 255, 0.04);
}

.conv-item-title {
    font-size: 12px;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding-right: 24px;
    font-family: var(--font-mono);
}
.conv-item.active .conv-item-title {
    color: var(--accent);
    font-weight: 500;
}

.conv-item-date {
    font-size: 10px;
    color: var(--text-muted);
    margin-top: 2px;
    font-family: var(--font-mono);
}

.conv-item-actions {
    position: absolute;
    top: 8px;
    right: 6px;
    display: none;
    gap: 2px;
}
.conv-item:hover .conv-item-actions {
    display: flex;
}
.conv-item-actions button {
    width: 22px;
    height: 22px;
    border: 1px solid transparent;
    border-radius: 4px;
    background: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}
.conv-item-actions button:hover {
    background: rgba(0, 212, 255, 0.06);
    border-color: rgba(0, 212, 255, 0.2);
    color: var(--accent);
}
.conv-item-actions button.conv-delete:hover {
    background: rgba(255, 68, 68, 0.06);
    border-color: rgba(255, 68, 68, 0.2);
    color: var(--error);
}

/* Shared conversations divider */
.conv-divider {
    font-family: var(--font-display);
    font-size: 10px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    padding: 12px 12px 6px;
    margin-top: 8px;
    border-top: 1px solid var(--border);
}

.conv-list::-webkit-scrollbar { width: 6px; }
.conv-list::-webkit-scrollbar-track { background: transparent; }
.conv-list::-webkit-scrollbar-thumb { background: rgba(0, 212, 255, 0.15); border-radius: 3px; }
.conv-list::-webkit-scrollbar-thumb:hover { background: rgba(0, 212, 255, 0.3); }

/* Chat Column (center) */
#chat-column {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
}


/* 3D Model Panel (top of left column) — base styles already in grid section above */

#model-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100% !important;
    height: 100% !important;
    display: block;
}

/* Thinking-Text Overlay: Gedanken-Fragmente schweben über die 3D-Szene */
#thinking-text-overlay {
    position: absolute;
    top: 38%;
    left: 0;
    width: 100%;
    height: 24%;
    pointer-events: none;
    overflow: hidden;
    z-index: 5;
    perspective: 600px;
}

.thinking-float {
    position: absolute;
    white-space: nowrap;
    font-family: var(--font-mono);
    font-size: 15px;
    color: rgba(0, 212, 255, 0.80);
    text-shadow: 0 0 12px rgba(0, 212, 255, 0.4);
    pointer-events: none;
    will-change: transform, opacity;
    animation-timing-function: linear;
    animation-fill-mode: forwards;
}

.thinking-float.from-left {
    animation-name: thinkFloatLeft;
}

.thinking-float.from-right {
    animation-name: thinkFloatRight;
}

@keyframes thinkFloatLeft {
    0%   { transform: translateX(-100%) translateZ(var(--tz, 0px)); opacity: 0; }
    10%  { opacity: var(--depth-opacity, 0.80); }
    50%  { opacity: calc(var(--depth-opacity, 0.80) * 0.85); }
    90%  { opacity: var(--depth-opacity, 0.80); }
    100% { transform: translateX(calc(100vw)) translateZ(var(--tz, 0px)); opacity: 0; }
}

@keyframes thinkFloatRight {
    0%   { transform: translateX(calc(100vw)) translateZ(var(--tz, 0px)); opacity: 0; }
    10%  { opacity: var(--depth-opacity, 0.80); }
    50%  { opacity: calc(var(--depth-opacity, 0.80) * 0.85); }
    90%  { opacity: var(--depth-opacity, 0.80); }
    100% { transform: translateX(-100%) translateZ(var(--tz, 0px)); opacity: 0; }
}

#model-loading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--text-muted);
    font-size: 13px;
    z-index: 2;
    background: var(--bg);
}

#model-loading .spinner {
    width: 28px;
    height: 28px;
}

#model-loading.hidden {
    display: none;
}

/* Header */
header#chat-header {
    height: var(--header-h);
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    background: var(--bg-surface);
    position: relative;
}

/* Neon-Linie unter dem Header */
header#chat-header::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.3), rgba(0, 212, 255, 0.5), rgba(0, 212, 255, 0.3), transparent);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: 0;
    overflow: hidden;
}

.header-logo {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 18px;
    color: var(--accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5), 0 0 20px rgba(0, 212, 255, 0.2);
}

.header-user {
    font-size: 13px;
    color: var(--text-muted);
}

.mode-badge {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    padding: 2px 7px;
    border-radius: 4px;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s, color 0.2s, opacity 0.15s;
    /* Button-Reset */
    background: none;
    border: none;
    font-family: var(--font-display);
    text-transform: uppercase;
    outline: none;
}
.mode-badge:hover {
    opacity: 0.75;
}
.mode-badge.mode-plan {
    background: rgba(251, 191, 36, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(251, 191, 36, 0.35);
}
.mode-badge.mode-build {
    background: rgba(34, 197, 94, 0.15);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.35);
}

/* === LoRA Expert Badge === */


.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}


/* LoRA Dropdown Menu */

.header-right {
    display: flex;
    gap: 8px;
}

.header-btn {
    padding: 6px 14px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 4px;
    background: transparent;
    color: var(--text);
    font-size: 12px;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all 0.2s;
}

.header-btn:hover {
    background: rgba(0, 212, 255, 0.08);
    border-color: rgba(0, 212, 255, 0.5);
    box-shadow: var(--glow-cyan-sm);
    color: var(--accent);
}

.header-btn-secondary {
    color: var(--text-muted);
}

.header-select {
    padding: 4px 8px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 4px;
    background: rgba(10, 10, 15, 0.7);
    color: var(--text);
    font-size: 11px;
    font-family: var(--font-mono);
    cursor: pointer;
    outline: none;
    max-width: 140px;
}

.header-select:hover {
    border-color: rgba(0, 212, 255, 0.4);
}

.header-select:focus {
    border-color: rgba(0, 212, 255, 0.5);
    box-shadow: var(--glow-cyan-sm);
}

#btn-sound {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px 10px;
}

/* Messages Area */
main#chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
    /* TRON Grid Hintergrund */
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}



.message {
    max-width: 80%;
    padding: 12px 16px 18px 16px;
    border-radius: var(--radius);
    word-wrap: break-word;
    font-size: 14px;
    line-height: 1.6;
    animation: fadeIn 0.2s ease;
    position: relative;
}

.msg-time {
    display: block;
    font-size: 10px;
    color: rgba(0, 212, 255, 0.25);
    text-align: right;
    margin-top: 4px;
    line-height: 1;
    user-select: none;
    font-family: var(--font-mono);
}

.message.user .msg-time {
    color: rgba(0, 212, 255, 0.3);
}

[data-theme="light"] .msg-time {
    color: rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .message.user .msg-time {
    color: rgba(255, 255, 255, 0.5);
}

.message.status .msg-time {
    display: none;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.message.user {
    align-self: flex-end;
    background: var(--user-bubble);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-bottom-right-radius: 4px;
    white-space: pre-wrap;
}

.message.assistant {
    align-self: flex-start;
    background: var(--bot-bubble);
    border: 1px solid var(--border);
    border-bottom-left-radius: 4px;
    box-shadow: inset 0 0 20px rgba(0, 212, 255, 0.02);
}

.message.assistant .msg-content {
    overflow-x: auto;
}

/* --- Denkprozess (<details>) Block --- */
.message.assistant .msg-content details {
    margin: 0 0 12px 0;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: color-mix(in srgb, var(--accent) 6%, transparent);
    overflow: hidden;
}
.message.assistant .msg-content details summary {
    cursor: pointer;
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    user-select: none;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 6px;
}
.message.assistant .msg-content details summary::before {
    content: "▶";
    font-size: 10px;
    transition: transform 0.2s ease;
    color: var(--text-secondary);
}
.message.assistant .msg-content details[open] summary::before {
    transform: rotate(90deg);
}
.message.assistant .msg-content details summary::-webkit-details-marker {
    display: none;
}
.message.assistant .msg-content details > :not(summary) {
    padding: 0 12px;
}
.message.assistant .msg-content details > p {
    padding: 0 12px;
    margin: 4px 0 8px;
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 400px;
    overflow-y: auto;
}

/* Markdown rendering in messages */
.message.assistant .msg-content h1,
.message.assistant .msg-content h2,
.message.assistant .msg-content h3 {
    margin: 16px 0 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--accent);
}

.message.assistant .msg-content pre {
    background: rgba(255, 255, 255, 0.06);
    padding: 12px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 8px 0;
    font-size: 13px;
    border: 1px solid var(--border);
}

.message.assistant .msg-content code {
    background: rgba(255, 255, 255, 0.08);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.message.assistant .msg-content pre code {
    background: none;
    padding: 0;
}

/* Code block wrapper with copy button */
.message.assistant .msg-content .code-block {
    position: relative;
    margin: 8px 0;
}

.message.assistant .msg-content .code-block .code-lang {
    position: absolute;
    top: 6px;
    left: 12px;
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    pointer-events: none;
    z-index: 1;
}

.message.assistant .msg-content .code-block .code-copy {
    position: absolute;
    top: 6px;
    right: 6px;
    padding: 3px 10px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-surface);
    color: var(--text-muted);
    font-size: 11px;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.15s, background 0.15s, color 0.15s;
    z-index: 1;
}

.message.assistant .msg-content .code-block:hover .code-copy {
    opacity: 1;
}

.message.assistant .msg-content .code-block .code-copy:hover {
    background: var(--bg-hover);
    color: var(--text);
    border-color: var(--accent);
}

/* highlight.js overrides to fit dark theme */
.message.assistant .msg-content pre code.hljs {
    background: transparent;
    padding: 0;
    font-size: 13px;
}

.message.assistant .msg-content .code-block pre {
    padding-top: 28px;  /* room for lang label */
}

/* Blockquotes (rendered by marked) */
.message.assistant .msg-content blockquote {
    border-left: 3px solid var(--accent);
    padding: 4px 12px;
    margin: 8px 0;
    color: var(--text-muted);
    background: rgba(0, 212, 255, 0.04);
    border-radius: 0 4px 4px 0;
}

.message.assistant .msg-content ul,
.message.assistant .msg-content ol {
    padding-left: 28px;
    margin: 10px 0;
}
.message.assistant .msg-content ol {
    list-style-type: decimal;
}
.message.assistant .msg-content ul {
    list-style-type: disc;
}
.message.assistant .msg-content li {
    padding-left: 4px;
    margin: 4px 0;
}

.message.assistant .msg-content p {
    margin: 12px 0;
}

.message.assistant .msg-content p:first-child {
    margin-top: 0;
}

.message.assistant .msg-content p:last-child {
    margin-bottom: 0;
}

.message.assistant .msg-content a {
    color: var(--accent);
    text-decoration: none;
}

.message.assistant .msg-content a:hover {
    text-decoration: underline;
}

.message.assistant .msg-content table {
    border-collapse: collapse;
    margin: 8px 0;
    width: 100%;
}

.message.assistant .msg-content th,
.message.assistant .msg-content td {
    border: 1px solid var(--border);
    padding: 6px 10px;
    text-align: left;
    font-size: 13px;
}

.message.assistant .msg-content th {
    background: var(--bg);
}

/* Status message (thinking, tool calls) */
.message.status {
    align-self: flex-start;
    background: none;
    color: var(--text-muted);
    font-size: 13px;
    padding: 4px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Tool-Call-Bubble — persistente Anzeige von Tool-Aktivitäten */
.message.tool-call {
    align-self: flex-start;
    background: var(--bg-surface, rgba(10,10,30,0.6));
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent, #6366f1);
    border-radius: 6px;
    padding: 6px 10px;
    max-width: 90%;
    font-family: var(--font-mono);
    font-size: 12px;
    animation: fadeIn 0.15s ease;
}
.message.tool-call.tool-meta {
    border-left-color: rgba(99,102,241,0.35);
    opacity: 0.7;
}
.message.tool-call.tool-call-done.tool-meta {
    opacity: 0.5;
}
.tool-call-header {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}
.tool-call-icon {
    font-size: 13px;
    flex-shrink: 0;
}
.tool-call-name {
    color: var(--accent, #6366f1);
    font-weight: 600;
    flex-shrink: 0;
}
.tool-call-detail {
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 340px;
    flex: 1;
}
.tool-call-spinner {
    width: 10px;
    height: 10px;
    border: 1.5px solid var(--border);
    border-top-color: var(--accent, #6366f1);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    flex-shrink: 0;
    margin-left: auto;
}
.tool-call-status {
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
    margin-left: auto;
}
.tool-call-status.ok { color: var(--success, #22c55e); }
.tool-call-status.err { color: var(--error, #ef4444); }
.tool-call-time {
    font-size: 10px;
    color: var(--text-muted);
    flex-shrink: 0;
}
.tool-call-result {
    margin-top: 5px;
    border-top: 1px solid var(--border);
    padding-top: 5px;
}
.tool-call-result pre {
    margin: 0;
    overflow-x: auto;
    max-height: 120px;
    scrollbar-width: thin;
}
.tool-call-result pre code {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
    white-space: pre-wrap;
    word-break: break-all;
}
.tool-call-result ul.tool-result-list {
    margin: 0;
    padding: 0 0 0 14px;
    list-style: disc;
}
.tool-call-result ul.tool-result-list li {
    font-size: 11px;
    color: var(--text-secondary);
    line-height: 1.5;
    word-break: break-all;
}
.tool-result-url {
    color: var(--text-muted);
    font-size: 10px;
}
.tool-result-ok {
    color: #4caf50;
    font-size: 11px;
}
.tool-result-err {
    color: #f44336;
    font-size: 11px;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Typing indicator — animated bouncing dots */
.typing-indicator {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    margin-left: 4px;
}

.typing-indicator .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    animation: typing-bounce 1.4s ease-in-out infinite;
}

.typing-indicator .dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator .dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing-bounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-6px); opacity: 1; }
}

/* Upload preview */
#upload-preview {
    padding: 8px 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    border-top: 1px solid var(--border);
    background: var(--bg-surface);
}

/* Drag & Drop overlay */
main#chat-messages.drag-over {
    position: relative;
}
main#chat-messages.drag-over::after {
    content: "Dateien hier ablegen";
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.06);
    border: 2px dashed var(--accent);
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    z-index: 10;
    pointer-events: none;
    margin: 8px;
}

.upload-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 12px;
    color: var(--text-muted);
}

.upload-chip .remove {
    cursor: pointer;
    color: var(--error);
    font-weight: bold;
    font-size: 14px;
    line-height: 1;
}

.upload-chip .remove:hover { color: #ff7b72; }

.upload-chip.uploading {
    opacity: 0.7;
    animation: upload-pulse 1.5s ease-in-out infinite;
    border-color: var(--accent);
}
@keyframes upload-pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}
.upload-chip.done { border-color: var(--success); }
.upload-chip.error { border-color: var(--error); }

/* Upload-Thumbnail Vorschau */
.upload-thumb {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
}

/* Bilder in Chat-Nachrichten */
.msg-images {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.msg-image-thumb {
    max-width: 200px;
    max-height: 200px;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    object-fit: cover;
}

.msg-image-thumb:hover {
    transform: scale(1.03);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

/* Bilder in Markdown (Bot-Antworten) */
.msg-image-inline {
    max-width: 100%;
    max-height: 400px;
    border-radius: 8px;
    cursor: pointer;
    margin: 8px 0;
    transition: transform 0.15s ease;
}

.msg-image-inline:hover {
    transform: scale(1.02);
}

/* Video in Chat-Nachrichten (ComfyUI-Generierungen) */
.msg-video {
    max-width: 100%;
    max-height: 480px;
    border-radius: 8px;
    margin: 8px 0;
    background: #000;
}

/* Bild-Overlay (Lightbox) */
.image-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    animation: fadeIn 0.2s ease;
}

.image-overlay img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    cursor: default;
}

.image-overlay-close {
    position: absolute;
    top: 16px;
    right: 24px;
    background: rgba(255, 255, 255, 0.15);
    border: none;
    color: #fff;
    font-size: 28px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
}

.image-overlay-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Input Area */
footer#chat-input-area {
    border-top: 1px solid var(--border);
    background: var(--bg-surface);
    flex-shrink: 0;
    position: relative;
}

/* Neon-Linie über dem Input-Bereich */
footer#chat-input-area::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.25), rgba(0, 212, 255, 0.4), rgba(0, 212, 255, 0.25), transparent);
}

/* Kontext-Auslastungsanzeige */
.context-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 16px;
    border-bottom: 1px solid var(--border);
}
.context-bar-label {
    font-size: 10px;
    color: var(--text-muted);
    flex-shrink: 0;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-family: var(--font-display);
}
.context-bar-track {
    flex: 1;
    height: 6px;
    background: var(--bg-input);
    border-radius: 3px;
    overflow: hidden;
}
.context-bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.4s ease, background 0.4s ease;
    width: 0%;
}
.context-bar-fill.ctx-low { background: var(--success); }
.context-bar-fill.ctx-mid { background: #d29922; }
.context-bar-fill.ctx-high { background: #e3872d; }
.context-bar-fill.ctx-critical { background: var(--error); }
.context-bar-text {
    font-size: 11px;
    color: var(--text-muted);
    flex-shrink: 0;
    min-width: 160px;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* --- Performance Stats Bar --- */
.perf-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 3px 16px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    font-size: 10px;
    font-family: var(--font-mono);
    color: var(--text-muted);
    letter-spacing: 0.03em;
    user-select: none;
}
.perf-group {
    display: flex;
    align-items: center;
    gap: 4px;
}
.perf-label {
    font-family: var(--font-display);
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    opacity: 0.7;
    margin-right: 4px;
}
.perf-value {
    font-variant-numeric: tabular-nums;
    color: var(--text);
    min-width: 36px;
    text-align: right;
}
.perf-dim {
    color: var(--text-muted);
}
.perf-sep {
    color: var(--border);
    font-size: 9px;
}
.perf-divider {
    width: 1px;
    height: 12px;
    background: var(--border);
}

.input-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 12px 16px;
}

.upload-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.upload-btn:hover {
    background: rgba(0, 212, 255, 0.06);
    border-color: rgba(0, 212, 255, 0.2);
    color: var(--accent);
}

#msg-input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: rgba(10, 10, 15, 0.7);
    color: var(--text);
    font-size: 14px;
    font-family: var(--font-mono);
    resize: none;
    outline: none;
    max-height: 160px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

#msg-input:focus {
    border-color: rgba(0, 212, 255, 0.4);
    box-shadow: var(--glow-cyan-sm);
}

#msg-input::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

#btn-send {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--accent);
    border-radius: 8px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent);
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

#btn-send:hover:not(:disabled) { background: rgba(0, 212, 255, 0.2); box-shadow: var(--glow-cyan-sm); }
#btn-send:disabled { opacity: 0.3; cursor: not-allowed; }
#btn-send.stop-mode { background: rgba(255, 68, 68, 0.15); border-color: var(--error); color: var(--error); }
#btn-send.stop-mode:hover { background: rgba(255, 68, 68, 0.25); }

/* Microphone Button */
.mic-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid transparent;
    border-radius: 8px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.mic-btn:hover {
    background: rgba(0, 212, 255, 0.06);
    border-color: rgba(0, 212, 255, 0.2);
    color: var(--accent);
}

.mic-btn.recording {
    background: var(--error);
    color: #fff;
    animation: pulse-mic 1.2s ease-in-out infinite;
}

@keyframes pulse-mic {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.08); opacity: 0.85; }
}

/* Recording indicator bar */
.recording-indicator {
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-top: 1px solid var(--error);
    background: var(--bg-surface);
    font-size: 13px;
    color: var(--error);
}

.recording-indicator .rec-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--error);
    animation: blink-dot 1s ease-in-out infinite;
}

@keyframes blink-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.2; }
}

.recording-indicator .rec-timer {
    font-variant-numeric: tabular-nums;
    color: var(--text-muted);
}

.recording-indicator .rec-cancel {
    margin-left: auto;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 12px;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: none;
    transition: all 0.2s;
}

.recording-indicator .rec-cancel:hover {
    border-color: var(--error);
    color: var(--error);
}

/* VCM Button (Voice Conversation Mode) */
.vcm-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid transparent;
    border-radius: 8px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.vcm-btn:hover {
    background: rgba(0, 212, 255, 0.06);
    border-color: rgba(0, 212, 255, 0.2);
    color: var(--accent);
}

.vcm-btn.active {
    background: var(--accent);
    color: #fff;
    animation: pulse-vcm 1.5s ease-in-out infinite;
}

.vcm-btn.paused {
    background: #e6a817;
    color: #fff;
    animation: none;
}

.vcm-btn.paused:hover {
    background: #d49b0e;
}

@keyframes pulse-vcm {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.08); opacity: 0.85; }
}

/* Mic-Button "Warte auf Sprache" Zustand (blau statt rot) */
.mic-btn.waiting {
    background: var(--accent);
    color: #fff;
    animation: pulse-mic 1.5s ease-in-out infinite;
}

/* Recording-Indicator "Warte auf Sprache" Variante */
.recording-indicator.waiting {
    border-top-color: var(--accent);
    color: var(--accent);
}

.recording-indicator.waiting .rec-dot {
    background: var(--accent);
}

/* Voice message style */
.message.user .voice-tag {
    font-size: 11px;
    color: rgba(0, 212, 255, 0.4);
    margin-bottom: 2px;
    font-family: var(--font-mono);
}

/* Welcome state */
.welcome {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    gap: 12px;
    padding: 40px;
    text-align: center;
}

.welcome h2 {
    color: var(--accent);
    font-size: 20px;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.welcome p {
    font-size: 14px;
    max-width: 400px;
    font-family: var(--font-mono);
}

/* Scrollbar */
#chat-messages::-webkit-scrollbar { width: 6px; }
#chat-messages::-webkit-scrollbar-track { background: transparent; }
#chat-messages::-webkit-scrollbar-thumb { background: rgba(0, 212, 255, 0.15); border-radius: 3px; }
#chat-messages::-webkit-scrollbar-thumb:hover { background: rgba(0, 212, 255, 0.3); }

/* === Files Panel — Zweispaltiger Dateibrowser === */
.files-panel {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    z-index: 50;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.files-panel[hidden] { display: none; }

.files-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent);
    flex-shrink: 0;
}
.files-header button,
.files-header label {
    font-size: 11px;
    line-height: 1;
    font-family: var(--font-mono);
    text-transform: none;
    letter-spacing: normal;
}
.files-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}
.files-header-actions label,
.files-header-actions button {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 500;
}

/* Hauptbereich: Baum + Inhalt */
.files-body {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Linke Spalte: Ordnerbaum */
.files-tree {
    width: 260px;
    min-width: 200px;
    max-width: 400px;
    border-right: 1px solid var(--border);
    overflow-y: auto;
    flex-shrink: 0;
    padding: 8px 0;
}
.files-tree-inner {
    padding: 0 4px;
}

/* Ordner-Einträge im Baum */
.tree-folder {
    user-select: none;
}
.tree-folder-row {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 8px;
    cursor: pointer;
    border-radius: 6px;
    font-size: 13px;
    color: var(--text);
    transition: background 0.12s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.tree-folder-row:hover {
    background: var(--bg-hover);
}
.tree-folder-row.active {
    background: var(--accent);
    color: var(--bg);
}
.tree-folder-row .tree-arrow {
    display: inline-block;
    width: 14px;
    text-align: center;
    font-size: 10px;
    color: var(--text-muted);
    transition: transform 0.15s;
    flex-shrink: 0;
}
.tree-folder-row.active .tree-arrow {
    color: var(--bg);
}
.tree-folder-row .tree-arrow.open {
    transform: rotate(90deg);
}
.tree-folder-row .tree-icon {
    flex-shrink: 0;
    font-size: 14px;
}
.tree-folder-row .tree-name {
    overflow: hidden;
    text-overflow: ellipsis;
}
.tree-children {
    padding-left: 16px;
}
.tree-children[hidden] { display: none; }

/* Rechte Spalte: Dateien + Vorschau */
.files-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

/* Breadcrumb-Leiste */
.files-breadcrumb {
    padding: 8px 16px;
    font-size: 12px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.files-breadcrumb span {
    cursor: pointer;
    color: var(--accent);
}
.files-breadcrumb span:hover {
    text-decoration: underline;
}
.files-breadcrumb .bc-sep {
    margin: 0 4px;
    color: var(--text-muted);
    cursor: default;
}
.files-breadcrumb .bc-current {
    color: var(--text);
    cursor: default;
}

/* Dateiliste */
.files-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px 12px;
}

.files-empty {
    color: var(--text-muted);
    text-align: center;
    padding: 40px 0;
    font-size: 14px;
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    margin-bottom: 6px;
    background: var(--bg-surface);
    transition: background 0.15s;
    cursor: pointer;
}
.file-item:hover {
    background: var(--bg-hover);
}
.file-item.is-folder {
    border-color: var(--accent);
    border-style: dashed;
}

.file-icon {
    font-size: 20px;
    margin-right: 10px;
    flex-shrink: 0;
    width: 40px;
    text-align: center;
}

/* Thumbnail-Vorschaubilder */
.file-thumb {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: 6px;
    flex-shrink: 0;
    margin-right: 10px;
    background: var(--bg-hover);
}

.file-info {
    flex: 1;
    min-width: 0;
}
.file-name {
    font-size: 14px;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.file-meta {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.file-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.file-download {
    background: none;
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 4px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    white-space: nowrap;
    transition: background 0.15s, color 0.15s;
}
.file-download:hover {
    background: var(--accent);
    color: var(--bg);
}
.file-rename {
    background: none;
    border: 1px solid var(--text-muted);
    color: var(--text-muted);
    padding: 4px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    white-space: nowrap;
    transition: background 0.15s, color 0.15s;
}
.file-rename:hover {
    background: var(--text-muted);
    color: var(--bg);
}
.file-delete {
    background: none;
    border: 1px solid var(--error);
    color: var(--error);
    padding: 4px 8px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    white-space: nowrap;
    transition: background 0.15s, color 0.15s;
}
.file-delete:hover {
    background: var(--error);
    color: #fff;
}

/* Toolbar: Select-All + Bulk-Actions */
.fb-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 12px;
    margin-bottom: 6px;
    border-bottom: 1px solid var(--border);
    min-height: 36px;
    flex-shrink: 0;
}
.fb-select-all-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-muted);
    cursor: pointer;
    user-select: none;
}
.fb-select-all-cb {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
}
.fb-bulk-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text);
}
.fb-bulk-bar[hidden] { display: none; }
.fb-bulk-btn {
    padding: 4px 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text);
    font-size: 12px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.fb-bulk-delete {
    border-color: var(--error);
    color: var(--error);
}
.fb-bulk-delete:hover {
    background: var(--error);
    color: #fff;
}
.fb-bulk-download {
    border-color: var(--accent);
    color: var(--accent);
}
.fb-bulk-download:hover {
    background: var(--accent);
    color: var(--bg);
}

/* Sortier-Leiste */
.fb-sort-bar {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 4px 12px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-surface);
    flex-shrink: 0;
}
.fb-sort-btn {
    padding: 3px 10px;
    border-radius: 5px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-muted);
    font-size: 12px;
    cursor: pointer;
    transition: background 0.12s, color 0.12s, border-color 0.12s;
    user-select: none;
    white-space: nowrap;
}
.fb-sort-btn:hover {
    background: var(--bg-hover, color-mix(in srgb, var(--accent) 10%, var(--bg-surface)));
    color: var(--text);
    border-color: var(--border);
}
.fb-sort-btn.active {
    color: var(--accent);
    border-color: var(--accent);
    background: color-mix(in srgb, var(--accent) 10%, var(--bg-surface));
    font-weight: 500;
}

/* Datei-Checkbox */
.file-checkbox {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
    flex-shrink: 0;
    margin-right: 8px;
}
/* Ausgewählte Zeile */
.file-item.is-selected {
    background: color-mix(in srgb, var(--accent) 12%, var(--bg-surface));
    border-color: var(--accent);
}

/* Vorschau-Bereich */
.files-preview {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.files-preview[hidden] { display: none; }

.files-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}
.files-preview-actions {
    display: flex;
    gap: 6px;
}

.files-preview-body {
    flex: 1;
    overflow: auto;
    padding: 16px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
}
.files-preview-body img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 8px;
}
.files-preview-body video {
    max-width: 100%;
    max-height: 100%;
    border-radius: 8px;
}
.files-preview-body pre {
    width: 100%;
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 13px;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg-surface);
    padding: 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    overflow: auto;
    max-height: 100%;
}
.files-preview-body iframe,
.files-preview-body object {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 8px;
}
.files-preview-body .preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    font-size: 14px;
    padding: 40px;
}
.files-preview-body .preview-placeholder .preview-icon {
    font-size: 48px;
}

.files-preview-meta {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-muted);
    flex-shrink: 0;
    max-height: 200px;
    overflow-y: auto;
}
.files-preview-meta table {
    width: 100%;
    border-collapse: collapse;
}
.files-preview-meta td {
    padding: 3px 8px 3px 0;
    vertical-align: top;
}
.files-preview-meta td:first-child {
    font-weight: 600;
    white-space: nowrap;
    color: var(--text);
    width: 120px;
}

/* Responsive: Auf schmalem Bildschirm Baum ausblenden */
@media (max-width: 640px) {
    .files-tree { display: none; }
    .files-body { flex-direction: column; }
}

/* === Help Panel (Overlay) === */
.help-panel {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    z-index: 50;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.help-panel[hidden] { display: none; }
.help-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent);
}
.help-header button {
    font-size: 22px;
    line-height: 1;
    padding: 2px 8px;
}
.help-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px 24px 40px;
}
.help-content section {
    margin-bottom: 22px;
}
.help-content section:last-child {
    margin-bottom: 0;
}
.help-content h3 {
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: 0 0 6px;
}
.help-content p {
    font-size: 13px;
    line-height: 1.6;
    color: var(--text);
    margin: 0 0 6px;
}
.help-content p:last-child {
    margin-bottom: 0;
}
.help-content ul {
    margin: 6px 0 0;
    padding-left: 20px;
    font-size: 13px;
    line-height: 1.6;
    color: var(--text);
}
.help-content code {
    background: var(--bg-surface);
    padding: 1px 5px;
    border-radius: 4px;
    font-size: 12px;
    font-family: var(--font-mono);
}
.help-content kbd {
    display: inline-block;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1px 6px;
    font-size: 11px;
    font-family: var(--font-mono);
    box-shadow: 0 1px 0 rgba(0,0,0,0.2);
    line-height: 1.5;
}
.help-shortcuts {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}
.help-shortcuts td {
    padding: 4px 8px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}
.help-shortcuts td:first-child {
    width: 160px;
    white-space: nowrap;
}

/* === Export Menu === */
.export-menu {
    position: fixed;
    z-index: 200;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 4px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4), var(--glow-cyan-sm);
}
.export-menu button {
    padding: 8px 18px;
    border: none;
    background: none;
    color: var(--text);
    font-size: 13px;
    font-family: var(--font-mono);
    cursor: pointer;
    border-radius: 6px;
    text-align: left;
    white-space: nowrap;
    transition: all 0.15s;
}
.export-menu button:hover {
    background: rgba(0, 212, 255, 0.06);
    color: var(--accent);
}

/* === Slash Command Popup === */
.cmd-popup {
    border-top: 1px solid var(--border);
    background: var(--bg-panel);
    padding: 4px 8px;
    max-height: 200px;
    overflow-y: auto;
}
.cmd-popup-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.1s;
}
.cmd-popup-item:hover,
.cmd-popup-item.active {
    background: rgba(0, 212, 255, 0.06);
}
.cmd-popup-item .cmd-name {
    font-weight: 600;
    font-size: 13px;
    color: var(--accent);
    min-width: 80px;
    font-family: var(--font-mono);
}
.cmd-popup-item .cmd-desc {
    font-size: 12px;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* === Mobile Support === */

/* Hamburger button — hidden on desktop */
.mobile-only { display: none; }

/* Sidebar backdrop — hidden on desktop */
.sidebar-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 59;
}
.sidebar-backdrop[hidden] { display: none; }

/* Hide 3D panel on narrower screens, left column becomes sidebar only */
@media (max-width: 900px) {
    #model-panel { display: none; }
}

/* === Tablet & narrow desktop (<=768px): Left column becomes overlay === */
@media (max-width: 768px) {
    #chat-screen { grid-template-columns: 1fr; }
    .mobile-only { display: flex; }

    #left-column {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 280px;
        z-index: 60;
        transform: translateX(-100%);
        transition: transform 0.25s ease;
        background: var(--bg-surface);
        border-right: 1px solid var(--border);
    }
    #left-column.open {
        transform: translateX(0);
    }
    /* On mobile, hide 3D panel in sidebar overlay */
    #left-column #model-panel { display: none; }
    /* Sidebar takes full height in overlay mode */
    #left-column .conv-sidebar { flex: 1; }

    .sidebar-backdrop.visible {
        display: block;
    }

    /* Header adjustments */
    .header-user { display: none; }

    #btn-new { font-size: 0; padding: 6px 10px; }
    #btn-new::before { content: "+"; font-size: 16px; }

    #btn-logout { font-size: 0; padding: 6px 10px; }
    #btn-logout::before { content: "\2192"; font-size: 16px; }

    /* Hide non-essential header buttons */
    .header-select { display: none; }
}

/* === Mobile (<=640px): Full touch optimization === */
@media (max-width: 640px) {
    /* Login screen */
    .logo pre { font-size: 6px; }
    .login-box { padding: 16px; }
    #login-form input { padding: 14px 16px; font-size: 16px; }
    #login-form button { padding: 14px; font-size: 16px; }

    /* Header compact */
    header#chat-header {
        padding: 0 8px;
        height: 48px;
    }
    :root { --header-h: 48px; }

    .header-logo { font-size: 16px; letter-spacing: 1px; }

    .header-right { gap: 4px; flex-wrap: wrap; justify-content: flex-end; }
    .header-btn { padding: 6px 8px; }

    /* Hide export and files button text */
    #btn-files svg, #btn-export svg { width: 18px; height: 18px; }

    /* Messages area */
    main#chat-messages { padding: 12px 8px; gap: 12px; }
    .message { max-width: 92%; font-size: 14px; padding: 10px 12px; }
    .message.assistant .msg-content pre {
        font-size: 12px;
        padding: 8px;
    }
    .message.assistant .msg-content .code-block pre {
        padding-top: 24px;
    }
    .message.assistant .msg-content .code-block .code-copy {
        opacity: 1;  /* Always visible on touch — no hover */
        padding: 4px 8px;
    }

    /* Tables scroll horizontally */
    .message.assistant .msg-content table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Input area — bigger touch targets */
    .input-row {
        padding: 8px;
        gap: 6px;
    }

    #msg-input {
        font-size: 16px;  /* Prevents iOS zoom on focus */
        padding: 10px 12px;
        border-radius: 20px;
    }

    .upload-btn, .mic-btn, .vcm-btn, #btn-send {
        width: 44px;
        height: 44px;
        min-width: 44px;
        min-height: 44px;
    }

    /* Upload preview chips */
    .upload-chip {
        font-size: 11px;
        padding: 4px 8px;
    }
    .upload-thumb {
        width: 36px;
        height: 36px;
    }
    #upload-preview {
        padding: 6px 8px;
    }

    /* Bilder in Nachrichten - mobil */
    .msg-image-thumb {
        max-width: 140px;
        max-height: 140px;
    }
    .msg-image-inline {
        max-height: 280px;
    }

    /* Welcome screen */
    .welcome { padding: 20px; }
    .welcome h2 { font-size: 18px; }
    .welcome p { font-size: 13px; }

    /* Files panel */
    .files-panel {
        top: 48px;  /* match mobile header height */
    }
    .files-header { padding: 10px 12px; }
    .files-list { padding: 8px; }

    /* Help panel */
    .help-panel {
        top: 48px;
    }
    .help-header { padding: 10px 12px; }
    .help-content { padding: 14px 12px 30px; }

    /* Admin panel */
    .admin-panel { top: 48px; }
    .admin-header { padding: 10px 12px; }
    .admin-content { padding: 14px 12px 30px; }
    .admin-table th, .admin-table td { padding: 8px 4px; font-size: 12px; }
    .admin-table th:nth-child(4), .admin-table td:nth-child(4) { display: none; } /* Telegram ausblenden */
    .admin-form-grid { grid-template-columns: 1fr; }
    .admin-btn--sm { font-size: 10px; padding: 2px 6px; }

    /* TOTP form */
    #totp-form input { padding: 14px 16px; font-size: 18px; }
    #totp-form button[type="submit"] { padding: 14px; font-size: 16px; }

    .file-item { padding: 10px; }
    .file-download { padding: 8px 14px; font-size: 13px; }

    /* Export menu */
    .export-menu {
        left: auto !important;
        right: 8px !important;
    }
    .export-menu button {
        padding: 12px 18px;
        font-size: 14px;
    }

    /* Left column when open (mobile) */
    #left-column.open {
        width: 85vw;
        max-width: 320px;
    }
    .conv-item { padding: 12px; }
    .conv-item-title { font-size: 14px; }
    .conv-item-actions {
        display: flex;  /* Always visible on touch */
    }
    .conv-item-actions button {
        width: 28px;
        height: 28px;
    }

    /* Recording indicator */
    .recording-indicator { padding: 8px 12px; }
}

/* === Very small screens (<=380px) === */
@media (max-width: 380px) {
    .logo pre { font-size: 5px; }
    .header-logo { font-size: 14px; }

    /* Stack header buttons if too many */
    .header-right { flex-wrap: wrap; justify-content: flex-end; }

    .message { max-width: 96%; }
    main#chat-messages { padding: 8px 4px; }
}

/* === Prevent iOS zoom on input focus === */
@supports (-webkit-touch-callout: none) {
    input, textarea, select {
        font-size: 16px !important;
    }
}

/* === 2FA TOTP Form === */
#totp-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
#totp-form[hidden] { display: none; }

.totp-info {
    color: var(--accent);
    font-size: 13px;
    font-family: var(--font-display);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-align: center;
    margin: 0;
}

#totp-form input {
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: rgba(10, 10, 15, 0.7);
    color: var(--text);
    font-size: 18px;
    font-family: var(--font-mono);
    font-weight: 600;
    letter-spacing: 0.3em;
    text-align: center;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}
#totp-form input:focus { border-color: rgba(0, 212, 255, 0.4); box-shadow: var(--glow-cyan-sm); }

#totp-form button[type="submit"] {
    padding: 12px;
    border: 1px solid var(--accent);
    border-radius: 8px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent);
    font-size: 14px;
    font-family: var(--font-display);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.2s;
}
#totp-form button[type="submit"]:hover { background: rgba(0, 212, 255, 0.2); box-shadow: var(--glow-cyan-sm); }
#totp-form button[type="submit"]:disabled { opacity: 0.5; cursor: not-allowed; }

.totp-cancel-btn {
    padding: 10px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 8px;
    background: transparent;
    color: var(--text-muted);
    font-size: 13px;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.2s;
}
.totp-cancel-btn:hover { border-color: rgba(0, 212, 255, 0.4); color: var(--accent); }

/* === Admin Panel (Benutzerverwaltung) === */
.admin-panel {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    z-index: 50;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.admin-panel[hidden] { display: none; }

.admin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent);
}
.admin-header button { font-size: 22px; line-height: 1; padding: 2px 8px; }
.admin-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.admin-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px 24px 40px;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
.admin-table th {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 2px solid var(--border);
    color: var(--text-muted);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}
.admin-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    vertical-align: middle;
}
.admin-table tr:hover td { background: var(--bg-hover); }

.admin-table .totp-active {
    color: var(--accent);
    font-weight: 600;
}
.admin-table .totp-inactive {
    color: var(--text-muted);
}

.admin-btn {
    padding: 5px 14px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 500;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid rgba(0, 212, 255, 0.3);
    background: transparent;
    color: var(--accent);
}
.admin-btn:hover { background: rgba(0, 212, 255, 0.08); border-color: var(--accent); box-shadow: var(--glow-cyan-sm); }

.admin-btn--danger {
    border-color: var(--error);
    color: var(--error);
}
.admin-btn--danger:hover { background: var(--error); color: #fff; }

.admin-btn--secondary {
    border-color: var(--text-muted);
    color: var(--text-muted);
}
.admin-btn--secondary:hover { background: var(--text-muted); color: var(--bg); }

.admin-btn--sm {
    padding: 3px 10px;
    font-size: 11px;
}

.admin-actions {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.admin-table .status-active { color: var(--success); font-weight: 600; }
.admin-table .status-locked { color: var(--error); font-weight: 600; }
.admin-table .status-inactive { color: var(--text-muted); }
.admin-table .row-locked td { opacity: 0.6; }

/* Admin Benutzer-Formular */
.admin-form {
    margin-top: 24px;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg-surface);
}
.admin-form[hidden] { display: none; }
.admin-form h3 {
    margin: 0 0 16px;
    color: var(--accent);
    font-family: var(--font-display);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}
}
.admin-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}
.admin-form-grid label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.admin-form-grid input,
.admin-form-grid select {
    padding: 8px 10px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: rgba(10, 10, 15, 0.7);
    color: var(--text);
    font-size: 14px;
    font-family: var(--font-mono);
}
.admin-form-grid input:focus,
.admin-form-grid select:focus {
    outline: none;
    border-color: rgba(0, 212, 255, 0.4);
    box-shadow: var(--glow-cyan-sm);
}
.admin-form-grid input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.admin-form-actions {
    display: flex;
    gap: 10px;
    margin-top: 16px;
}

/* Profile logout section */
.profile-logout-section {
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}
.profile-logout-btn {
    width: 100%;
    background: transparent;
    color: var(--error);
    border: 1px solid var(--error);
    cursor: pointer;
    font-family: var(--font-display);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.profile-logout-btn:hover {
    background: rgba(255, 68, 68, 0.1);
    box-shadow: 0 0 15px rgba(255, 68, 68, 0.2);
}

.admin-totp-setup {
    margin-top: 24px;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg-surface);
    text-align: center;
}
.admin-totp-setup[hidden] { display: none; }
.admin-totp-setup h3 {
    margin: 0 0 8px;
    color: var(--accent);
    font-family: var(--font-display);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}
.admin-totp-setup p {
    color: var(--text-muted);
    font-size: 13px;
    margin: 4px 0 16px;
}
.admin-qr {
    max-width: 200px;
    height: auto;
    border-radius: 8px;
    background: #fff;
    padding: 8px;
    margin-bottom: 12px;
}
.admin-totp-secret {
    margin: 8px 0 16px;
}
.admin-totp-secret code {
    background: var(--bg-input);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 13px;
    color: var(--accent);
    letter-spacing: 0.05em;
    user-select: all;
}

/* === ComfyUI Fortschrittsanzeige (innerhalb User-Blase) === */
.comfy-progress {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
    padding: 8px 0 2px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
    animation: fadeIn 0.3s ease;
}

.comfy-label {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    white-space: nowrap;
}

.comfy-blocks {
    display: inline-flex;
    align-items: center;
    gap: 3px;
}

.comfy-block {
    width: 3px;
    height: 14px;
    background: var(--accent);
    border-radius: 2px;
    animation: comfy-wave 1.2s ease-in-out infinite;
}

.comfy-block:nth-child(2) { animation-delay: 0.1s; }
.comfy-block:nth-child(3) { animation-delay: 0.2s; }
.comfy-block:nth-child(4) { animation-delay: 0.3s; }
.comfy-block:nth-child(5) { animation-delay: 0.4s; }

@keyframes comfy-wave {
    0%, 100% {
        transform: scaleY(0.4);
        opacity: 0.4;
    }
    50% {
        transform: scaleY(1);
        opacity: 1;
    }
}

.comfy-done {
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 11px;
    color: var(--success);
    font-weight: 500;
    animation: fadeIn 0.3s ease;
}

[data-theme="light"] .comfy-progress {
    border-top-color: rgba(0, 0, 0, 0.1);
}
[data-theme="light"] .comfy-done {
    border-top-color: rgba(0, 0, 0, 0.1);
}

/* === Safe area for notched devices === */
@supports (padding: max(0px)) {
    footer#chat-input-area {
        padding-bottom: max(0px, env(safe-area-inset-bottom));
    }
    header#chat-header {
        padding-top: max(0px, env(safe-area-inset-top));
    }
}

/* === KaTeX Mathe-Formeln === */
.katex-display {
    text-align: center;
    margin: 0.8em 0;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 0.4em 0;
}
.katex-display > .katex {
    font-size: 1.15em;
}
.msg-content .katex {
    font-size: 1.05em;
}
.katex-error {
    color: #f88;
    font-family: var(--font-mono);
    font-size: 0.9em;
}
[data-theme="light"] .katex-error {
    color: #c44;
}

/* --- Datei-Links im Chat (öffnen Filebrowser) --- */
a.file-link {
    color: var(--accent);
    text-decoration: underline;
    text-decoration-style: dotted;
    cursor: pointer;
    transition: opacity 0.15s;
}
a.file-link:hover {
    opacity: 0.75;
    text-decoration-style: solid;
}
a.file-link::before {
    content: "📄 ";
    font-size: 0.85em;
}

/* === GPU Mini-Bar Header Button === */
.gpu-header-btn {
    padding: 4px 10px !important;
    min-width: 72px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--bg-surface);
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}
.gpu-header-btn:hover {
    border-color: var(--accent);
    background: var(--bg-hover);
}
.gpu-mini-bars {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 20px;
}
.gpu-mini-group {
    display: flex;
    align-items: flex-end;
    gap: 1px;
}
.gpu-mini-bar {
    width: 4px;
    height: 20px;
    background: var(--bg-input);
    border-radius: 2px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}
.gpu-mini-fill {
    width: 100%;
    height: 0%;
    border-radius: 2px;
    background: var(--success);
    transition: height 0.6s ease, background 0.3s ease;
}
.gpu-mini-sep {
    width: 1px;
    height: 14px;
    background: var(--border);
    margin: 0 2px;
    align-self: center;
}

/* === GPU Dashboard Panel === */
.gpu-panel {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    z-index: 50;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.gpu-panel[hidden] { display: none; }

.gpu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent);
}
.gpu-header button { font-size: 22px; line-height: 1; padding: 2px 8px; }
.gpu-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}
.gpu-last-update {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 400;
}

.gpu-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px 24px 40px;
}

/* 2x2 Grid: vLLM spans left column, shared top-right, comfy bottom-right */
.gpu-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 20px;
    margin-bottom: 28px;
}
.gpu-cell {
    min-width: 0;
}
.gpu-cell-vllm {
    grid-row: 1 / 3;
}
.gpu-cell-shared {
    grid-column: 2;
    grid-row: 1;
}
.gpu-cell-comfy {
    grid-column: 2;
    grid-row: 2;
}

.gpu-server-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.gpu-server-ip {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 400;
    font-family: var(--font-mono);
}

.gpu-cards {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* GPU Card */
.gpu-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px 16px;
}
.gpu-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}
.gpu-card-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
}
.gpu-card-index {
    font-size: 11px;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.gpu-metrics {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.gpu-metric {
    display: grid;
    grid-template-columns: 80px 1fr auto;
    align-items: center;
    gap: 10px;
}
.gpu-metric-label {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-family: var(--font-display);
}
.gpu-metric-value {
    font-size: 12px;
    color: var(--text);
    font-family: var(--font-mono);
    white-space: nowrap;
}

/* Progress Bar */
.gpu-bar {
    height: 8px;
    background: var(--bg-input);
    border-radius: 4px;
    overflow: hidden;
}
.gpu-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.5s ease, background 0.3s ease;
    min-width: 2px;
}

/* Stats Row */
.gpu-stats {
    display: flex;
    gap: 16px;
    font-size: 12px;
    font-family: var(--font-mono);
    color: var(--text-muted);
    margin-top: 4px;
    padding-left: 80px;
}
.gpu-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Process Tags */
.gpu-processes {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}
.gpu-process-tag {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    background: var(--bg-input);
    color: var(--accent);
    font-family: var(--font-mono);
}

/* Container Tabelle */
.gpu-containers-section {
    margin-top: 8px;
}
.gpu-section-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.gpu-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}
.gpu-table th {
    text-align: left;
    padding: 8px 12px;
    border-bottom: 2px solid var(--border);
    color: var(--text-muted);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}
.gpu-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    vertical-align: middle;
}
.gpu-table tr:hover td { background: var(--bg-hover); }

.gpu-container-name {
    font-weight: 600;
    font-family: var(--font-mono);
    font-size: 12px;
}
.gpu-container-image {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.gpu-container-ports {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
}

.gpu-status-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}
.gpu-status-up {
    background: rgba(63, 185, 80, 0.15);
    color: var(--success);
}
.gpu-status-down {
    background: rgba(248, 81, 73, 0.15);
    color: var(--error);
}

.gpu-restart-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-muted);
    border-radius: 4px;
    padding: 2px 8px;
    cursor: pointer;
    font-size: 14px;
    transition: color 0.15s, border-color 0.15s;
}
.gpu-restart-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
}
.gpu-restart-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.gpu-loading {
    color: var(--text-muted);
    font-size: 13px;
    padding: 20px;
    text-align: center;
}
.gpu-error {
    color: var(--error);
    font-size: 13px;
    padding: 12px;
    background: rgba(248, 81, 73, 0.08);
    border-radius: 8px;
    border: 1px solid rgba(248, 81, 73, 0.2);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .gpu-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .gpu-cell-vllm {
        grid-row: auto;
    }
    .gpu-cell-shared {
        grid-column: 1;
        grid-row: auto;
    }
    .gpu-cell-comfy {
        grid-column: 1;
        grid-row: auto;
    }
    .gpu-content {
        padding: 14px 12px 30px;
    }
    .gpu-metric {
        grid-template-columns: 60px 1fr auto;
        gap: 6px;
    }
    .gpu-stats {
        padding-left: 60px;
        gap: 10px;
        font-size: 11px;
    }
    .gpu-table th:nth-child(3),
    .gpu-table td:nth-child(3),
    .gpu-table th:nth-child(4),
    .gpu-table td:nth-child(4) {
        display: none;
    }
    .gpu-panel { top: 48px; }
}

/* === PWA Update Banner === */
.update-banner {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 999;
    animation: slideUp 0.4s ease;
}
.update-banner[hidden] { display: none; }

.update-banner-content {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--bg-surface);
    border: 1px solid var(--accent);
    border-radius: 12px;
    padding: 14px 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.25);
    max-width: 480px;
}
.update-banner-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.update-banner-text strong {
    font-size: 14px;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
}
.update-banner-text span {
    font-size: 12px;
    color: var(--text-muted);
}
.update-banner-actions {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}
.update-btn-dismiss {
    background: none;
    border: 1px solid rgba(0, 212, 255, 0.2);
    color: var(--text-muted);
    border-radius: 6px;
    padding: 6px 14px;
    font-size: 12px;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.15s;
}
.update-btn-dismiss:hover {
    border-color: rgba(0, 212, 255, 0.4);
    color: var(--accent);
}
.update-btn-apply {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--accent);
    color: var(--accent);
    border-radius: 6px;
    padding: 6px 14px;
    font-size: 12px;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
}
.update-btn-apply:hover {
    background: rgba(0, 212, 255, 0.2);
    box-shadow: var(--glow-cyan-sm);
}

@keyframes slideUp {
    from { opacity: 0; transform: translate(-50%, 100%); }
    to   { opacity: 1; transform: translate(-50%, 0); }
}

@media (max-width: 768px) {
    .update-banner {
        left: 12px;
        right: 12px;
        transform: none;
        bottom: 16px;
    }
    .update-banner-content {
        flex-direction: column;
        gap: 12px;
        max-width: none;
    }
    @keyframes slideUp {
        from { opacity: 0; transform: translateY(100%); }
        to   { opacity: 1; transform: translateY(0); }
    }
}

/* ==============================================
   FEEDBACK BUTTON + MODAL
   ============================================== */

.feedback-btn {
    position: fixed;
    bottom: 24px;
    left: 24px;
    z-index: 55;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid rgba(0, 212, 255, 0.3);
    background: var(--bg-panel);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.feedback-btn:hover {
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent);
    border-color: var(--accent);
    transform: scale(1.08);
    box-shadow: var(--glow-cyan);
}

/* Modal Overlay */
.feedback-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.15s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.feedback-modal[hidden] {
    display: none;
}

.feedback-modal-content {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    width: 90%;
    max-width: 540px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), var(--glow-cyan-sm);
    animation: modalSlideUp 0.2s ease;
}

@keyframes modalSlideUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.feedback-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.feedback-modal-header h3 {
    margin: 0;
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
}

.feedback-modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
    transition: color 0.15s;
}

.feedback-modal-close:hover {
    color: var(--accent);
}

.feedback-modal-body {
    padding: 16px 20px;
}

.feedback-screenshot-preview {
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 12px;
    max-height: 240px;
    background: #000;
}

.feedback-screenshot-preview img {
    width: 100%;
    height: auto;
    display: block;
    max-height: 240px;
    object-fit: contain;
}

.feedback-screenshot-warning {
    padding: 12px 16px;
    color: var(--orange);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-align: center;
    border: 1px dashed var(--orange);
    border-radius: var(--radius);
    background: var(--orange-dim);
}

.feedback-textarea {
    width: 100%;
    min-height: 100px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: rgba(10, 10, 15, 0.7);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 14px;
    resize: vertical;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
    box-sizing: border-box;
}

.feedback-textarea:focus {
    border-color: rgba(0, 212, 255, 0.4);
    box-shadow: var(--glow-cyan-sm);
}

.feedback-textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

.feedback-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 12px 20px 16px;
    border-top: 1px solid var(--border);
}

.feedback-btn-cancel {
    padding: 8px 18px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 8px;
    background: transparent;
    color: var(--text-muted);
    font-size: 13px;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.15s;
}

.feedback-btn-cancel:hover {
    background: rgba(0, 212, 255, 0.06);
    border-color: rgba(0, 212, 255, 0.4);
    color: var(--accent);
}

.feedback-btn-submit {
    padding: 8px 22px;
    border: 1px solid var(--accent);
    border-radius: 8px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent);
    font-size: 13px;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
}

.feedback-btn-submit:hover {
    background: rgba(0, 212, 255, 0.2);
    box-shadow: var(--glow-cyan-sm);
}

.feedback-btn-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ==============================================
   TOAST NOTIFICATIONS
   ============================================== */

.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column-reverse;
    gap: 8px;
    pointer-events: none;
}

.toast {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text);
    font-size: 13px;
    font-family: var(--font-mono);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3), var(--glow-cyan-sm);
    pointer-events: auto;
    animation: toastSlideIn 0.25s ease;
    max-width: 360px;
    word-break: break-word;
}

.toast.toast-success {
    border-left: 3px solid #22c55e;
}

.toast.toast-error {
    border-left: 3px solid #ef4444;
}

.toast.toast-info {
    border-left: 3px solid var(--accent);
}

.toast.toast-hide {
    animation: toastSlideOut 0.2s ease forwards;
}

@keyframes toastSlideIn {
    from { opacity: 0; transform: translateX(40px); }
    to   { opacity: 1; transform: translateX(0); }
}

@keyframes toastSlideOut {
    from { opacity: 1; transform: translateX(0); }
    to   { opacity: 0; transform: translateX(40px); }
}

@media (max-width: 768px) {
    .feedback-btn {
        bottom: 16px;
        left: 16px;
        width: 42px;
        height: 42px;
    }
    .feedback-modal-content {
        width: 95%;
        max-height: 85vh;
    }
    .toast-container {
        left: 12px;
        right: 12px;
        bottom: 16px;
    }
    .toast {
        max-width: none;
    }
}