/* ============================================
   PathAble — Smart Indoor Navigation
   Modern, Accessible Design System
   ============================================ */

:root {
    /* Colors - Dark Theme (default) */
    --bg-primary: #0a0a1a;
    --bg-secondary: #12122a;
    --bg-card: #1a1a3e;
    --bg-elevated: #222250;
    --text-primary: #f0f0ff;
    --text-secondary: #a0a0c0;
    --text-muted: #606080;
    --accent: #6c5ce7;
    --accent-glow: rgba(108, 92, 231, 0.3);
    --accent-hover: #7c6cf7;
    --success: #00d2a0;
    --warning: #ffb347;
    --danger: #ff4757;
    --info: #4fc3f7;
    --border: rgba(255, 255, 255, 0.08);
    --shadow: rgba(0, 0, 0, 0.4);
    --glass: rgba(26, 26, 62, 0.85);
    --glass-border: rgba(255, 255, 255, 0.1);

    /* Spacing */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* Typography */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Touch targets */
    --touch-min: 56px;
    --touch-lg: 72px;
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #f5f5fa;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-elevated: #f0f0f8;
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-muted: #8a8aaa;
    --accent: #5b4bd6;
    --accent-glow: rgba(91, 75, 214, 0.2);
    --accent-hover: #4a3cc4;
    --success: #00b894;
    --warning: #e17055;
    --danger: #d63031;
    --info: #0984e3;
    --border: rgba(0, 0, 0, 0.08);
    --shadow: rgba(0, 0, 0, 0.1);
    --glass: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(0, 0, 0, 0.06);
}

/* High Contrast */
[data-contrast="high"] {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-card: #111111;
    --bg-elevated: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --text-muted: #b0b0b0;
    --accent: #00aaff;
    --accent-glow: rgba(0, 170, 255, 0.4);
    --accent-hover: #33bbff;
    --success: #00ff88;
    --warning: #ffcc00;
    --danger: #ff3333;
    --info: #00ccff;
    --border: rgba(255, 255, 255, 0.2);
    --shadow: rgba(0, 0, 0, 0.8);
    --glass: rgba(10, 10, 10, 0.95);
    --glass-border: rgba(255, 255, 255, 0.25);
}

/* Large Text */
[data-text="large"] {
    font-size: 120%;
}
[data-text="large"] .quick-label,
[data-text="large"] .stat-label,
[data-text="large"] .det-label {
    font-size: 1.1em;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

button {
    font-family: var(--font);
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
    min-height: var(--touch-min);
    min-width: var(--touch-min);
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

button:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

input, select {
    font-family: var(--font);
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    min-height: var(--touch-min);
}

input:focus, select:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
    border-color: var(--accent);
}

/* ============================================
   Screen System
   ============================================ */
.screen {
    display: none;
    position: fixed;
    inset: 0;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
}

.screen.active {
    display: flex;
    flex-direction: column;
    animation: screenIn 0.3s ease-out;
}

@keyframes screenIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   Splash Screen
   ============================================ */
#splash-screen {
    background: var(--bg-primary);
    z-index: 1000;
}

.splash-bg {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.splash-glow {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    animation: pulseGlow 2s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.3); opacity: 0.8; }
}

.splash-content {
    text-align: center;
    z-index: 1;
}

.splash-logo {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-ring {
    position: absolute;
    inset: 0;
    border: 3px solid var(--accent);
    border-radius: 50%;
    animation: ringPulse 2s ease-in-out infinite;
}

@keyframes ringPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.5; }
}

.logo-icon {
    font-size: 48px;
}

.splash-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.splash-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.splash-loader {
    width: 200px;
    height: 4px;
    background: var(--bg-card);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto;
}

.loader-bar {
    height: 100%;
    width: 40%;
    background: linear-gradient(90deg, var(--accent), var(--accent-hover));
    border-radius: 2px;
    animation: loadSlide 1.5s ease-in-out infinite;
}

@keyframes loadSlide {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(500%); }
}

/* ============================================
   Screen Header
   ============================================ */
.screen-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    background: var(--glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 10;
}

.screen-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.btn-back {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.2s;
}

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

.btn-back span {
    font-size: 1.2rem;
}

/* ============================================
   Building Selection
   ============================================ */
.building-list {
    flex: 1;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.building-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.2s;
    cursor: pointer;
    width: 100%;
    text-align: left;
}

.building-card:hover {
    border-color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-2px);
}

.building-card:active {
    transform: translateY(0);
}

.building-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--bg-elevated);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    flex-shrink: 0;
}

.building-info {
    flex: 1;
}

.building-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.building-meta {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ============================================
   Home Screen
   ============================================ */
#home-screen {
    background: var(--bg-primary);
}

.home-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.location-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    background: var(--bg-card);
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 500;
}

.pulse-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--success);
    animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.badge {
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.badge-sim {
    background: rgba(255, 179, 71, 0.15);
    color: var(--warning);
    border: 1px solid rgba(255, 179, 71, 0.3);
}

.badge-live {
    background: rgba(0, 210, 160, 0.15);
    color: var(--success);
    border: 1px solid rgba(0, 210, 160, 0.3);
}

.home-content {
    flex: 1;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Voice Navigation Button */
.btn-voice {
    width: 100%;
    padding: 28px 24px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    transition: all 0.3s;
    box-shadow: 0 8px 32px var(--accent-glow);
    position: relative;
    overflow: hidden;
}

.btn-voice::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent, rgba(255,255,255,0.1));
    opacity: 0;
    transition: opacity 0.3s;
}

.btn-voice:hover::before {
    opacity: 1;
}

.btn-voice:active {
    transform: scale(0.98);
}

.voice-icon-wrap {
    position: relative;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.voice-icon {
    font-size: 32px;
    z-index: 1;
}

.voice-rings {
    position: absolute;
    inset: 0;
}

.ring {
    position: absolute;
    inset: 0;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: ringExpand 2s ease-out infinite;
}

.ring-2 {
    animation-delay: 1s;
}

@keyframes ringExpand {
    0% { transform: scale(0.8); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

.voice-label {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Quick Actions Grid */
.quick-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.quick-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    transition: all 0.2s;
    min-height: 120px;
}

.quick-card:hover {
    border-color: var(--accent);
    background: var(--bg-elevated);
    transform: translateY(-2px);
}

.quick-card:active {
    transform: translateY(0) scale(0.98);
}

.quick-icon {
    font-size: 32px;
}

.quick-label {
    font-size: 0.95rem;
    font-weight: 600;
    text-align: center;
}

/* Emergency Button */
.btn-emergency {
    width: 100%;
    padding: 20px 24px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #ff4757, #ff6b81);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: all 0.2s;
    box-shadow: 0 4px 20px rgba(255, 71, 87, 0.3);
}

.btn-emergency:hover {
    box-shadow: 0 6px 30px rgba(255, 71, 87, 0.5);
    transform: translateY(-2px);
}

.btn-emergency:active {
    transform: scale(0.98);
}

.emergency-icon {
    font-size: 24px;
}

.emergency-text {
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 0.05em;
}

.emergency-sub {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* Bottom Actions */
.bottom-actions {
    display: flex;
    gap: 12px;
    margin-top: auto;
    padding-top: 16px;
}

.btn-ghost {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s;
}

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

/* ============================================
   Navigation Screen
   ============================================ */
#navigation-screen {
    background: var(--bg-primary);
}

.nav-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.btn-stop {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    background: var(--danger);
    color: white;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.2s;
}

.btn-stop:hover {
    background: #ff6b7a;
}

.nav-title {
    flex: 1;
}

.nav-title h2 {
    font-size: 1.3rem;
    font-weight: 700;
}

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

.nav-content {
    flex: 1;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.instruction-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
}

.instruction-icon {
    font-size: 64px;
    line-height: 1;
}

.instruction-text {
    font-size: 1.4rem;
    font-weight: 600;
    line-height: 1.4;
}

.nav-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

.nav-actions {
    display: flex;
    gap: 12px;
}

.btn-action {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-action:hover {
    background: var(--bg-elevated);
    border-color: var(--accent);
}

/* ============================================
   Obstacle Detection Screen
   ============================================ */
#obstacle-screen {
    background: #000;
}

.obstacle-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 10;
}

.obstacle-header h2 {
    font-size: 1.3rem;
    font-weight: 700;
}

.obstacle-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 16px;
    gap: 16px;
}

.camera-container {
    position: relative;
    width: 100%;
    aspect-ratio: 4/3;
    background: #111;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

#camera-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.camera-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.detection-box {
    position: absolute;
    border: 3px solid var(--success);
    border-radius: var(--radius-sm);
    display: none;
    transition: all 0.1s;
}

.detection-box.active {
    display: block;
}

.detection-box.danger {
    border-color: var(--danger);
    box-shadow: 0 0 20px rgba(255, 71, 87, 0.5);
}

.camera-status {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 16px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 50px;
    font-size: 0.85rem;
    color: #fff;
    white-space: nowrap;
}

.detection-panel {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.detection-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.detection-row:last-child {
    border-bottom: none;
}

.det-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.det-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.warning-banner {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
    display: none;
}

.warning-banner.active {
    display: block;
    animation: warningPulse 1s ease-in-out infinite;
}

.warning-banner.critical {
    background: rgba(255, 71, 87, 0.2);
    color: var(--danger);
    border: 2px solid var(--danger);
}

.warning-banner.high {
    background: rgba(255, 179, 71, 0.2);
    color: var(--warning);
    border: 2px solid var(--warning);
}

.warning-banner.normal {
    background: rgba(79, 195, 247, 0.2);
    color: var(--info);
    border: 2px solid var(--info);
}

@keyframes warningPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ============================================
   Nearby Places Screen
   ============================================ */
.nearby-list {
    flex: 1;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.nearby-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.2s;
    cursor: pointer;
    width: 100%;
    text-align: left;
}

.nearby-card:hover {
    border-color: var(--accent);
    background: var(--bg-elevated);
}

.nearby-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--bg-elevated);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.nearby-info {
    flex: 1;
}

.nearby-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.nearby-distance {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.nearby-nav-btn {
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    background: var(--accent);
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.2s;
}

.nearby-nav-btn:hover {
    background: var(--accent-hover);
}

/* ============================================
   Settings Screen
   ============================================ */
.settings-content {
    flex: 1;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.settings-group {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.settings-group h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--accent);
}

.setting-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.setting-row:last-child {
    border-bottom: none;
}

.setting-row label {
    flex: 1;
    font-size: 1rem;
    font-weight: 500;
}

.setting-row input[type="range"] {
    flex: 2;
    min-height: 40px;
    accent-color: var(--accent);
}

.setting-row select {
    flex: 1;
}

.setting-val {
    min-width: 50px;
    text-align: right;
    font-weight: 600;
    color: var(--accent);
}

/* ============================================
   Admin Panel
   ============================================ */
.admin-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.admin-tabs {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
}

.tab-btn {
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
    transition: all 0.2s;
    min-height: 44px;
}

.tab-btn.active {
    background: var(--accent);
    color: white;
}

.tab-content {
    flex: 1;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tab-content.hidden {
    display: none;
}

.btn-add {
    padding: 14px 20px;
    border-radius: var(--radius-md);
    background: var(--accent);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.2s;
    min-height: var(--touch-min);
}

.btn-add:hover {
    background: var(--accent-hover);
}

.admin-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.admin-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.admin-item-info {
    flex: 1;
}

.admin-item-name {
    font-weight: 600;
    font-size: 1rem;
}

.admin-item-meta {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.admin-item-actions {
    display: flex;
    gap: 8px;
}

.admin-item-btn {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    min-height: 40px;
    transition: all 0.2s;
}

.admin-item-btn.edit {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.admin-item-btn.delete {
    background: rgba(255, 71, 87, 0.15);
    color: var(--danger);
}

/* ============================================
   Voice Overlay
   ============================================ */
#voice-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    z-index: 500;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

#voice-overlay.hidden {
    display: none;
}

.voice-wave {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 80px;
}

.wave-bar {
    width: 6px;
    height: 20px;
    background: var(--accent);
    border-radius: 3px;
    animation: waveAnim 0.8s ease-in-out infinite;
}

.wave-bar:nth-child(1) { animation-delay: 0s; }
.wave-bar:nth-child(2) { animation-delay: 0.1s; }
.wave-bar:nth-child(3) { animation-delay: 0.2s; }
.wave-bar:nth-child(4) { animation-delay: 0.3s; }
.wave-bar:nth-child(5) { animation-delay: 0.4s; }

@keyframes waveAnim {
    0%, 100% { height: 20px; }
    50% { height: 60px; }
}

.voice-text {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    padding: 0 24px;
}

/* ============================================
   Toast Notifications
   ============================================ */
#toast-container {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 600;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.toast {
    padding: 14px 24px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    box-shadow: 0 8px 32px var(--shadow);
    animation: toastIn 0.3s ease-out;
    pointer-events: auto;
    max-width: 90vw;
    text-align: center;
}

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }
.toast.warning { border-left: 4px solid var(--warning); }
.toast.info { border-left: 4px solid var(--info); }

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

.toast.hiding {
    animation: toastOut 0.3s ease-in forwards;
}

@keyframes toastOut {
    to { opacity: 0; transform: translateY(20px); }
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 380px) {
    .quick-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .quick-card {
        padding: 16px 12px;
        min-height: 100px;
    }

    .quick-icon {
        font-size: 28px;
    }

    .splash-title {
        font-size: 2rem;
    }
}

@media (min-width: 768px) {
    .screen {
        max-width: 480px;
        margin: 0 auto;
        border-left: 1px solid var(--border);
        border-right: 1px solid var(--border);
    }

    #voice-overlay {
        max-width: 480px;
        margin: 0 auto;
    }
}

/* ============================================
   Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   Live captions
   ============================================ */
.caption-bar {
    position: fixed;
    left: 50%;
    bottom: calc(env(safe-area-inset-bottom, 0px) + 16px);
    transform: translateX(-50%);
    max-width: min(92vw, 560px);
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md, 12px);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
    color: var(--text-primary);
    font-size: 1rem;
    line-height: 1.4;
    text-align: center;
    z-index: 900;
    pointer-events: none;
}

/* Keep the caption clear of the toast stack. */
#toast-container {
    bottom: calc(env(safe-area-inset-bottom, 0px) + 96px);
}

.setting-note {
    margin: 4px 0 8px;
    font-size: 0.85rem;
    line-height: 1.45;
    color: var(--text-secondary);
}

/* ============================================
   Screen Reader Only
   ============================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}