/* ═══════════════════════════════════════════════════════════════════════════
   BMA Trainer – Design System v2
   firefightervr.de | northdocks.com
   DIN 14675-1:2020-01 compliant simulation
   Visual language: DIN 14034-6 Feuerwehr-Symbolik
   ═══════════════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;900&family=JetBrains+Mono:wght@400;600&display=swap');

/* ── CSS Custom Properties ─────────────────────────────────────────────────── */
:root {
    /* DIN 14034-6 exact signal colors */
    --din-red: #9B2424;
    /* Vorbeugender Brandschutz – Nr. 01–33 */
    --din-blue: #007CB0;
    /* Löschwasser / Löscheinrichtungen – Nr. 34–63 */
    --din-brown: #7B4F2E;
    /* Schmutzwasser – Nr. 64–66 */
    --din-black: #2B2B2C;
    /* Sonstige – Nr. 67–80 */
    --din-green: #1A8A52;
    /* Feuerwehr-Zufahrt – Nr. 74–75 */
    --din-yellow: #F9A800;
    /* Gashaupthahn – Nr. 68 */

    /* Brand (mapped from DIN palette) */
    --brand-red: var(--din-red);
    --brand-blue: var(--din-blue);
    --brand-green: var(--din-green);
    --brand-orange: #E07000;
    --brand-yellow: #F9A800;

    /* Surfaces – deep dark, neutral */
    --bg-base: #0c0d0f;
    --bg-surface: #111316;
    --bg-card: #181b1f;
    --bg-panel: #1d2025;
    --bg-input: #232830;
    --bg-hover: #282e38;

    /* Borders */
    --border: rgba(255, 255, 255, 0.07);
    --border-active: rgba(255, 255, 255, 0.18);

    /* DIN-tinted borders */
    --border-red: rgba(155, 36, 36, 0.4);
    --border-blue: rgba(0, 124, 176, 0.4);
    --border-green: rgba(26, 138, 82, 0.4);

    /* Text */
    --text-primary: #eef0f4;
    --text-secondary: #7d8899;
    --text-muted: #434d5e;

    /* LED & alarm colors */
    --led-off: #1a1f28;
    --led-red: #ff2d2d;
    --led-red-glow: rgba(255, 45, 45, 0.6);
    --led-yellow: #ffca00;
    --led-yellow-glow: rgba(255, 202, 0, 0.5);
    --led-green: #00e676;
    --led-green-glow: rgba(0, 230, 118, 0.5);
    --led-blue: #2196f3;

    /* Timing */
    --trans: 0.2s ease;
    --trans-slow: 0.4s ease;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.5);

    /* DIN frame thickness – use for matching symbol borders */
    --din-border: 3px;
}

/* ── Light Theme Overrides ─────────────────────────────────────────────────── */
[data-theme="light"] {
    /* Surfaces – clean bright whites + warm off-whites */
    --bg-base: #f2f4f7;
    --bg-surface: #ffffff;
    --bg-card: #ffffff;
    --bg-panel: #eef1f6;
    --bg-input: #f8f9fb;
    --bg-hover: #e6eaf2;

    /* Borders – subtle on white */
    --border: rgba(0, 0, 0, 0.10);
    --border-active: rgba(0, 0, 0, 0.25);

    /* DIN-tinted borders – keep the same hues but lighter alpha */
    --border-red: rgba(155, 36, 36, 0.30);
    --border-blue: rgba(0, 124, 176, 0.30);
    --border-green: rgba(26, 138, 82, 0.30);

    /* Text – dark on light */
    --text-primary: #141720;
    --text-secondary: #4a5264;
    --text-muted: #8a93a8;

    /* LED colours stay vivid – they represent physical indicator LEDs */
    --led-off: #d0d5de;

    /* Shadows – lighter for bright backgrounds */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.10);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.15);
}

/* ── Light-theme specific component tweaks ─────────────────────────────────── */
[data-theme="light"] .fat-display {
    background: #f0f8f3;
    border-color: var(--din-red);
}

[data-theme="light"] .log-panel {
    background: #f5f6fa;
}

[data-theme="light"] .log-entry {
    border-bottom-color: rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .fsd-panel {
    background: linear-gradient(145deg, #fffff5, #f8f9fb);
}

[data-theme="light"] .toast {
    background: #fff5f5;
    color: var(--din-red);
}

[data-theme="light"] .toast.success {
    background: #f0fff7;
    color: #0d7042;
}

[data-theme="light"] .led {
    border-color: rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .app-header {
    border-bottom-color: var(--din-red);
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .state-mirror {
    background: #f0f2f7;
}

[data-theme="light"] .mirror-row {
    border-bottom-color: rgba(0, 0, 0, 0.06);
}

/* Hero background gradient adjusted for light mode */
[data-theme="light"] .hero::before {
    background:
        radial-gradient(ellipse 60% 50% at 50% 10%, rgba(155, 36, 36, 0.07), transparent 65%),
        radial-gradient(ellipse 40% 30% at 85% 90%, rgba(0, 124, 176, 0.05), transparent 65%),
        radial-gradient(ellipse 30% 25% at 10% 75%, rgba(26, 138, 82, 0.04), transparent 65%);
}

/* ═══════════════════════════════════════════════════════════════════════════
   SHARED DEVICE COMPONENTS – FAT · FBF (solo.html + teilnehmer.html)
   These components intentionally keep their dark/hardware appearance
   in both light and dark theme – do NOT add [data-theme="light"] overrides.
   If you update these, update BOTH solo.html and teilnehmer.html
   (or better: only update this file – both pages use these classes).
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── FAT mini card ──────────────────────────────────────────────────────── */
.fat-mini {
    background: #0f1318;
    border: 2px solid #2d3748;
    border-radius: 14px;
    padding: 1.25rem;
    position: relative;
    flex: 1;
    /* fill the left-col height */
    display: flex;
    flex-direction: column;
}

.fat-mini::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #ff2d2d, #ff6b00);
    border-radius: 3px 3px 0 0;
}

/* ── FAT LCD display ────────────────────────────────────────────────────── */
.fat-lcd-display {
    background: #0f1c2e;
    border: 2px solid #0a1420;
    border-radius: 6px;
    padding: 0.6rem 0.75rem;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    min-height: 76px;
    font-size: 0.7rem;
    line-height: 1.55;
    position: relative;
    box-shadow: inset 0 0 16px rgba(0, 0, 0, 0.8);
}

.fat-lcd-line {
    display: block;
    white-space: nowrap;
    overflow: hidden;
}

.fat-lcd-line.betrieb {
    color: #22ee66;
}

.fat-lcd-line.erstmeldung {
    color: #ff4444;
    font-weight: 700;
}

.fat-lcd-line.folgemeldung {
    color: #ff9966;
}

.fat-lcd-line.standort {
    color: #88aacc;
}

.fat-lcd-line.voralarm {
    color: #ffd700;
    font-weight: 700;
}

.fat-lcd-line.dim {
    color: #2a4a6a;
}

.fat-scroll-indicator {
    font-size: 0.55rem;
    color: #445566;
    text-align: right;
    margin-top: 0.2rem;
    font-family: 'JetBrains Mono', monospace;
}

/* ── FBF mini card ──────────────────────────────────────────────────────── */
.fbf-mini {
    background: #12161e;
    border: 2px solid #2d3748;
    border-radius: 14px;
    padding: 1.25rem;
    position: relative;
    flex: 1;
    /* fill the left-col height */
    display: flex;
    flex-direction: column;
}

.fbf-mini::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #118ab2, #06d6a0);
    border-radius: 3px 3px 0 0;
}

/* ── FBF action buttons ─────────────────────────────────────────────────── */
.fbf-btn-mini {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    padding: 0.8rem 0.4rem;
    background: linear-gradient(145deg, #1e2530, #181e28);
    border: 1px solid #2d3748;
    border-radius: 10px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.65rem;
    font-weight: 700;
    color: #7d8899;
    /* intentionally fixed – looks correct on dark bg */
    text-transform: uppercase;
    letter-spacing: 0.04em;
    transition: var(--trans);
}

.fbf-btn-mini:hover {
    border-color: #4a5568;
    background: rgba(255, 255, 255, 0.04);
}

.fbf-btn-mini.toggled {
    border-color: var(--brand-yellow);
    background: rgba(255, 202, 0, 0.07);
    color: var(--brand-yellow);
}

.fbf-btn-mini.danger-toggled {
    border-color: var(--brand-red);
    background: rgba(230, 57, 70, 0.08);
    color: #ff6666;
}

/* Small LED dot on FBF buttons */
.fbf-btn-mini .action-led,
.action-led {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--led-off);
    transition: var(--trans);
}

.action-led.on-yellow {
    background: var(--led-yellow);
    box-shadow: 0 0 6px var(--led-yellow-glow);
}

.action-led.on-red {
    background: var(--led-red);
    box-shadow: 0 0 6px var(--led-red-glow);
}

.action-led.on-green {
    background: var(--led-green);
    box-shadow: 0 0 6px var(--led-green-glow);
}

/* ── BMZ Rückstellen button ─────────────────────────────────────────────── */
.rueck-btn-mini {
    width: 100%;
    padding: 0.9rem;
    background: linear-gradient(145deg, #1a0a0a, #240d0d);
    border: 2px solid #4a1515;
    border-radius: 12px;
    color: #ff4444;
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--trans);
    margin-top: 0.75rem;
}

.rueck-btn-mini:hover {
    border-color: var(--brand-red);
    box-shadow: 0 0 16px rgba(230, 57, 70, 0.3);
}


/* ── Theme Toggle Button ──────────────────────────────────────────────────── */
.theme-toggle-wrap {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 2000;
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--border-active);
    background: var(--bg-surface);
    color: var(--text-secondary);
    cursor: pointer;
    transition: background var(--trans), color var(--trans), border-color var(--trans), box-shadow var(--trans), transform var(--trans);
    box-shadow: var(--shadow-md);
    padding: 0;
    outline: none;
}

.theme-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--din-red);
    box-shadow: 0 0 0 2px rgba(155, 36, 36, 0.15), var(--shadow-md);
    transform: scale(1.08);
}

.theme-toggle:active {
    transform: scale(0.94);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--din-blue);
    outline-offset: 2px;
}

/* Only one icon visible at a time – toggled by JS */
.theme-icon-sun,
.theme-icon-moon {
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

/* When toggle lives inside .app-header nav – no floating shadow, slightly smaller */
.app-header .theme-toggle {
    width: 32px;
    height: 32px;
    border-radius: 7px;
    box-shadow: none;
    background: var(--bg-hover);
    border-color: var(--border);
}

.app-header .theme-toggle:hover {
    box-shadow: 0 0 0 2px rgba(155, 36, 36, 0.15);
}


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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, sans-serif;
    background: var(--bg-base);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ── App-mode: full-screen no-scroll layout for training pages ───────────── */
body.app-mode {
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* The content area that fills remaining screen under the header */
.app-content {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    padding: 0.5rem 1rem 0;
    min-height: 0;
}

/* A scrollable column / panel inside app-content */
.scrollable {
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.scrollable::-webkit-scrollbar {
    width: 4px;
}

.scrollable::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

/* ── Typography ────────────────────────────────────────────────────────────── */
h1 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 900;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.3rem, 3vw, 1.8rem);
    font-weight: 700;
}

h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

h4 {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
}

/* DIN-style label – uppercase monospace, like symbol class labels */
.din-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
}

/* ── Layout ────────────────────────────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.gap-1 {
    gap: 0.5rem;
}

.gap-2 {
    gap: 1rem;
}

.gap-3 {
    gap: 1.5rem;
}

/* ── DIN Symbol Box – matches the physical DIN 14034-6 frame style ─────────── */
/* Use on an img or svg: adds the coloured border exactly like the DIN standard */
.din-sym {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border-radius: 3px;
}

.din-sym-red {
    border: var(--din-border) solid var(--din-red);
}

.din-sym-blue {
    border: var(--din-border) solid var(--din-blue);
}

.din-sym-brown {
    border: var(--din-border) solid var(--din-brown);
}

.din-sym-black {
    border: var(--din-border) solid var(--din-black);
}

/* ── Cards ────────────────────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    transition: border-color var(--trans);
}

.card:hover {
    border-color: var(--border-active);
}

.card-sm {
    padding: 0.85rem;
    border-radius: 6px;
}

/* DIN-accent cards: left border stripe like a fire plan symbol category */
.card-red {
    border-left: 3px solid var(--din-red);
}

.card-blue {
    border-left: 3px solid var(--din-blue);
}

.card-green {
    border-left: 3px solid var(--din-green);
}

.card-brown {
    border-left: 3px solid var(--din-brown);
}

/* ── Global Buttons ───────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.4rem;
    border: none;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--trans);
    text-decoration: none;
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.96);
}

.btn-primary {
    background: var(--din-red);
    color: #fff;
    box-shadow: 0 2px 12px rgba(155, 36, 36, 0.35);
}

.btn-primary:hover {
    background: #7d1c1c;
    box-shadow: 0 4px 20px rgba(155, 36, 36, 0.5);
}

.btn-secondary {
    background: var(--bg-panel);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-hover);
}

.btn-blue {
    background: var(--din-blue);
    color: #fff;
    box-shadow: 0 2px 12px rgba(0, 124, 176, 0.3);
}

.btn-blue:hover {
    background: #005f88;
}

.btn-green {
    background: var(--din-green);
    color: #fff;
    box-shadow: 0 2px 12px rgba(26, 138, 82, 0.3);
}

.btn-green:hover {
    filter: brightness(1.1);
}

.btn-warn {
    background: var(--brand-yellow);
    color: #000;
}

.btn-warn:hover {
    filter: brightness(1.05);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.btn-sm {
    padding: 0.4rem 0.9rem;
    font-size: 0.8rem;
    border-radius: 5px;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.05rem;
    border-radius: 8px;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ── Form elements ────────────────────────────────────────────────────────── */
input,
select,
textarea {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    padding: 0.6rem 0.9rem;
    width: 100%;
    transition: var(--trans);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--din-blue);
    box-shadow: 0 0 0 3px rgba(0, 124, 176, 0.2);
}

label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.35rem;
}

.form-group {
    margin-bottom: 1rem;
}

/* ── Badges ───────────────────────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.55rem;
    border-radius: 4px;
    /* Square-ish, like a DIN number plate */
    font-size: 0.72rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.04em;
}

.badge-red {
    background: rgba(155, 36, 36, 0.2);
    color: #e05555;
    border: 1px solid rgba(155, 36, 36, 0.35);
}

.badge-blue {
    background: rgba(0, 124, 176, 0.2);
    color: #3ab8f0;
    border: 1px solid rgba(0, 124, 176, 0.35);
}

.badge-green {
    background: rgba(26, 138, 82, 0.15);
    color: #3fd68a;
    border: 1px solid rgba(26, 138, 82, 0.3);
}

.badge-yellow {
    background: rgba(249, 168, 0, 0.2);
    color: #f9a800;
    border: 1px solid rgba(249, 168, 0, 0.35);
}

.badge-gray {
    background: var(--bg-panel);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

/* ── Header / Nav ─────────────────────────────────────────────────────────── */
.app-header {
    background: var(--bg-surface);
    border-bottom: 2px solid var(--din-red);
    /* Red bar like a Feuerwehr plan header */
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 1001;
    flex-shrink: 0;
}

.app-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.app-logo .logo-icon {
    width: 32px;
    height: 32px;
    background: var(--din-red);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.app-logo .logo-text {
    font-size: 0.95rem;
    font-weight: 700;
}

.app-logo .logo-sub {
    font-size: 0.67rem;
    color: var(--text-muted);
}

.nav-links {
    display: flex;
    gap: 0.5rem;
}

/* ── Status Bar ───────────────────────────────────────────────────────────── */
.status-bar {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    padding: 0.4rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    font-size: 0.78rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.status-dot.online {
    background: var(--led-green);
    box-shadow: 0 0 8px var(--led-green-glow);
}

.status-dot.alarm {
    background: var(--led-red);
    box-shadow: 0 0 8px var(--led-red-glow);
    animation: pulse-red 1s infinite;
}

/* ── LED Component ────────────────────────────────────────────────────────── */
.led-row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 0;
}

.led {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--led-off);
    border: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
    transition: var(--trans);
}

.led.on-red {
    background: var(--led-red);
    box-shadow: 0 0 6px var(--led-red-glow);
}

.led.on-yellow {
    background: var(--led-yellow);
    box-shadow: 0 0 6px var(--led-yellow-glow);
}

.led.on-green {
    background: var(--led-green);
    box-shadow: 0 0 6px var(--led-green-glow);
}

.led.blink {
    animation: blink 0.8s step-end infinite;
}

.led-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.led-label.active {
    color: var(--text-primary);
    font-weight: 500;
}

/* ── Device Panels (FBF, FAT, FSD) ──────────────────────────────────────── */
.device-panel {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
}

/* DIN-frame accent on top: red stripe = Brandschutz category */
.device-panel.panel-red {
    border-top: 3px solid var(--din-red);
}

.device-panel.panel-blue {
    border-top: 3px solid var(--din-blue);
}

.device-panel.panel-green {
    border-top: 3px solid var(--din-green);
}

.device-title {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

/* ── DIN symbol label inside device title ── */
.device-title .sym-tag {
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    font-size: 0.6rem;
    font-weight: 700;
}

.sym-tag-red {
    border: 2px solid var(--din-red);
    color: var(--din-red);
}

.sym-tag-blue {
    border: 2px solid var(--din-blue);
    color: var(--din-blue);
}

/* ── FBF Buttons ──────────────────────────────────────────────────────────── */
.fbf-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.8rem 0.5rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    transition: background var(--trans), border-color var(--trans);
    color: var(--text-primary);
    user-select: none;
}

.fbf-btn:hover {
    background: var(--bg-hover);
    border-color: var(--din-red);
    box-shadow: 0 0 0 1px rgba(155, 36, 36, 0.2);
}

.fbf-btn:active {
    opacity: 0.8;
}

.fbf-btn.active {
    border-color: var(--brand-yellow);
    background: rgba(249, 168, 0, 0.06);
}

.fbf-btn .btn-led {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--led-off);
    transition: var(--trans);
}

.fbf-btn .btn-led.on {
    background: var(--led-yellow);
    box-shadow: 0 0 6px var(--led-yellow-glow);
}

.fbf-btn .btn-led.red {
    background: var(--led-red);
    box-shadow: 0 0 6px var(--led-red-glow);
}

.fbf-btn-label {
    font-size: 0.68rem;
    font-weight: 700;
    text-align: center;
    line-height: 1.2;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
}

.fbf-btn:hover .fbf-btn-label {
    color: var(--text-primary);
}

.fbf-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

/* ── FAT Display ──────────────────────────────────────────────────────────── */
.fat-display {
    background: #09100d;
    border: 2px solid var(--din-red);
    border-radius: 6px;
    padding: 1.1rem;
    font-family: 'JetBrains Mono', monospace;
    min-height: 120px;
}

.fat-display .fat-header {
    font-size: 0.6rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    display: flex;
    justify-content: space-between;
}

.fat-alarm-entry {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.45rem 0;
    border-bottom: 1px solid rgba(155, 36, 36, 0.15);
}

.fat-alarm-entry:last-child {
    border-bottom: none;
}

.fat-mg {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--led-red);
    min-width: 80px;
}

.fat-location {
    font-size: 0.83rem;
    color: var(--text-secondary);
}

.fat-empty {
    color: var(--text-muted);
    font-size: 0.83rem;
    text-align: center;
    padding: 1.5rem 0;
}

.fat-standby {
    color: var(--led-green);
    font-size: 0.88rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ── Log Panel ────────────────────────────────────────────────────────────── */
.log-panel {
    background: #08080a;
    border: 1px solid var(--border);
    border-top: 2px solid var(--din-black);
    border-radius: 6px;
    padding: 0.75rem;
    height: 260px;
    overflow-y: auto;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.73rem;
}

.log-entry {
    display: grid;
    grid-template-columns: 60px 80px 1fr;
    gap: 0.75rem;
    padding: 0.3rem 0.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    animation: fadeIn 0.3s ease;
}

.log-entry:last-child {
    border-bottom: none;
}

.log-time {
    color: var(--text-muted);
}

.log-actor {
    color: var(--din-yellow);
    font-weight: 600;
}

.log-text {
    color: var(--text-secondary);
}

.log-panel::-webkit-scrollbar {
    width: 4px;
}

.log-panel::-webkit-scrollbar-track {
    background: transparent;
}

.log-panel::-webkit-scrollbar-thumb {
    background: var(--border-active);
    border-radius: 4px;
}

/* ── Melder Trigger Grid (Leitung) ───────────────────────────────────────── */
.melder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 0.6rem;
}

.melder-btn {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.75rem 0.5rem;
    text-align: center;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--trans);
}

.melder-btn:hover {
    background: var(--bg-hover);
    color: var(--din-red);
    border-color: var(--din-red);
    box-shadow: 0 0 0 1px rgba(155, 36, 36, 0.15);
    transform: scale(1.03);
}

.melder-btn:active {
    transform: scale(0.97);
}

.melder-btn.active {
    background: rgba(155, 36, 36, 0.15);
    border-color: var(--din-red);
    color: #e05555;
}

.melder-btn .mg-num {
    font-size: 0.65rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

/* ── Alarm Banner ─────────────────────────────────────────────────────────── */
/* Sits at top:0 edge-to-edge. Header has z-index:1001 so it always
   renders ON TOP of the banner — abort button + timer stay visible. */
.alarm-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 0.5rem 1.5rem;
    background: var(--din-red);
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 999;
    animation: alarmSlide 0.4s ease;
    box-shadow: 0 4px 24px rgba(155, 36, 36, 0.6);
}

.alarm-banner.voralarm {
    background: var(--led-yellow);
    color: #000;
}

.alarm-banner .alarm-mg {
    background: rgba(0, 0, 0, 0.25);
    border-radius: 4px;
    padding: 0.2rem 0.6rem;
    font-family: 'JetBrains Mono', monospace;
}

/* ── Toast ────────────────────────────────────────────────────────────────── */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: #1a0d0d;
    border: 1px solid var(--din-red);
    border-left: 4px solid var(--din-red);
    border-radius: 6px;
    padding: 1rem 1.25rem;
    color: #e05555;
    font-size: 0.88rem;
    max-width: 340px;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
    box-shadow: var(--shadow-lg);
}

.toast.success {
    background: #0a1a12;
    border-color: var(--din-green);
    border-left-color: var(--din-green);
    color: #3fd68a;
}

/* ── FSD Panel ────────────────────────────────────────────────────────────── */
.fsd-panel {
    background: linear-gradient(145deg, #141008, #181b1f);
    border: 2px solid var(--din-yellow);
    border-radius: 8px;
    padding: 1.25rem;
}

.fsd-indicator {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--led-off);
    border: 3px solid rgba(249, 168, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0.75rem auto;
    transition: var(--trans-slow);
}

.fsd-indicator.open {
    background: rgba(249, 168, 0, 0.12);
    border-color: var(--led-yellow);
    box-shadow: 0 0 24px var(--led-yellow-glow);
}

/* ── Laufkarten Viewer ─────────────────────────────────────────────────────── */
.laufkarte-list {
    display: grid;
    gap: 0.6rem;
}

.laufkarte-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-left: 3px solid var(--din-blue);
    border-radius: 6px;
    padding: 0.7rem 1rem;
    cursor: pointer;
    transition: var(--trans);
}

.laufkarte-item:hover {
    background: var(--bg-hover);
    border-color: var(--din-blue);
    box-shadow: 0 0 0 1px rgba(0, 124, 176, 0.2);
}

.laufkarte-item .lk-mg {
    background: rgba(0, 124, 176, 0.15);
    color: var(--din-blue);
    border: 1px solid rgba(0, 124, 176, 0.3);
    border-radius: 4px;
    padding: 0.2rem 0.5rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    font-weight: 700;
    min-width: 48px;
    text-align: center;
}

/* DIN symbol next to Laufkarte – shows the FSD/BMZ symbol */
.laufkarte-item .lk-sym {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}

.laufkarte-viewer-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.88);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 500;
    animation: fadeIn 0.2s ease;
}

.laufkarte-viewer-inner {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-top: 3px solid var(--din-blue);
    border-radius: 8px;
    width: 95vw;
    max-width: 900px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.laufkarte-viewer-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.9rem 1.25rem;
    border-bottom: 1px solid var(--border);
}

.laufkarte-viewer-body {
    flex: 1;
    overflow: auto;
}

.laufkarte-viewer-body iframe,
.laufkarte-viewer-body img {
    width: 100%;
    height: 100%;
    border: none;
    min-height: 60vh;
    display: block;
}

/* ── Upload Zone ──────────────────────────────────────────────────────────── */
.upload-zone {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--trans);
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: var(--din-blue);
    background: rgba(0, 124, 176, 0.05);
}

.upload-zone .upload-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

/* ── Connection code ──────────────────────────────────────────────────────── */
.connect-code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--din-green);
    text-align: center;
    background: rgba(26, 138, 82, 0.08);
    border: 2px solid rgba(26, 138, 82, 0.3);
    border-radius: 6px;
    padding: 1rem 2rem;
}

/* ── Page layout helpers ──────────────────────────────────────────────────── */
.page-wrap {
    padding: 1.5rem;
    max-width: 1400px;
    margin: 0 auto;
}

.split-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 1.5rem;
    align-items: start;
}

.section-title {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 1.25rem 0;
}

/* DIN-style section divider with colour category */
.divider-red {
    border-top-color: rgba(155, 36, 36, 0.3);
}

.divider-blue {
    border-top-color: rgba(0, 124, 176, 0.3);
}

/* ── Animations ───────────────────────────────────────────────────────────── */
@keyframes pulse-red {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.4;
    }
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes alarmSlide {
    from {
        transform: translateY(-100%);
    }

    to {
        transform: translateY(0);
    }
}

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

.spinner {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 2px solid var(--border);
    border-top-color: var(--din-blue);
    animation: spin 0.7s linear infinite;
    display: inline-block;
}

/* ── Nav Links ─────────────────────────────────────────────────────────────── */
.nav-link {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.4rem 0.75rem;
    border-radius: 5px;
    transition: var(--trans);
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

/* ── Site Footer ───────────────────────────────────────────────────────────── */
.site-footer {
    background: var(--bg-surface);
    border-top: 2px solid var(--din-red);
    padding: 3rem 1.5rem 2rem;
    margin-top: 4rem;
}

.site-footer .footer-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 2.5rem;
}

.footer-brand .footer-logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.9rem;
    text-decoration: none;
    color: inherit;
}

.footer-brand .fl-icon {
    width: 36px;
    height: 36px;
    background: var(--din-red);
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    flex-shrink: 0;
}

.footer-brand .fl-text {
    font-size: 0.95rem;
    font-weight: 700;
}

.footer-brand .fl-sub {
    font-size: 0.68rem;
    color: var(--text-muted);
    display: block;
}

.footer-brand p {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.65;
    max-width: 220px;
    margin-top: 0.25rem;
}

.footer-col h5 {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
    margin-bottom: 0.9rem;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-col ul li a {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--trans);
}

.footer-col ul li a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    max-width: 1280px;
    margin: 2rem auto 0;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.footer-bottom p {
    font-size: 0.73rem;
    color: var(--text-muted);
}

.footer-bottom .footer-badges {
    display: flex;
    gap: 0.55rem;
    flex-wrap: wrap;
}

.footer-badge {
    font-size: 0.65rem;
    font-family: 'JetBrains Mono', monospace;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.2rem 0.5rem;
    color: var(--text-muted);
}

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
    .split-layout {
        grid-template-columns: 1fr;
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }

    .fbf-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .site-footer .footer-inner {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 540px) {
    .page-wrap {
        padding: 1rem;
    }

    .fbf-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .fbf-btn-label {
        font-size: 0.62rem;
    }

    .site-footer .footer-inner {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ── Portrait warning ─────────────────────────────────────────────────────── */
.portrait-warn {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 99998;
    background: #0a0c10;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 1.25rem;
    text-align: center;
    padding: 2rem;
}

.portrait-warn-icon {
    font-size: 4rem;
    animation: rotate-hint 2s ease-in-out infinite;
}

@keyframes rotate-hint {

    0%,
    100% {
        transform: rotate(0deg);
    }

    40% {
        transform: rotate(-90deg);
    }

    60% {
        transform: rotate(-90deg);
    }
}

@media screen and (max-width: 900px) and (orientation: portrait) {
    .portrait-warn {
        display: flex;
    }

    body.app-mode>*:not(.portrait-warn) {
        visibility: hidden;
    }
}