/* Toast notifications */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    min-width: 180px;
    max-width: 90vw;
    background: var(--color-bg-secondary);
    color: var(--color-text);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 12px 24px;
    font-size: var(--font-size-md);
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 12px;
    opacity: 1;
    transition: opacity 0.3s, transform 0.3s;
    animation: toastIn 0.3s;
}
.toast.error { border-left: 3px solid var(--color-error); }
.toast.success { border-left: 3px solid var(--color-success); }
.toast.info { border-left: 3px solid var(--color-accent); }
:root {
    /* Core palette */
    --color-dark: #0a0a0a;
    --color-darker: #141414;
    --color-blue: #0077CC;
    --color-purple: #7300ff;
    --color-white: #ffffff;
    --color-gray: #cccccc;
    --color-gray-dark: #666666;
    --color-border: #333333;
    --color-hover: #1a1a1a;
    --color-bolt-glow: #3953a6;

    /* Semantic aliases */
    --color-bg: var(--color-dark);
    --color-bg-secondary: var(--color-darker);
    --color-bg-tertiary: var(--color-hover);
    --color-surface: #1e1e1e;
    --color-surface-hover: #252525;
    --color-text: var(--color-white);
    --color-text-secondary: var(--color-gray);
    --color-text-muted: var(--color-gray-dark);
    --color-primary: var(--color-purple);
    --color-primary-hover: #5c00cc;
    --color-primary-light: rgba(115, 0, 255, 0.12);
    --color-accent: var(--color-blue);
    --color-success: #22c55e;
    --color-warning: #eab308;
    --color-error: #ef4444;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;

    /* Radii */
    --radius-sm: 6px;
    --radius-md: 4px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,.4);
    --shadow-lg: 0 8px 24px rgba(0,0,0,.5);
    --glow-send: 0 0 20px rgba(57,83,166,.55);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-md: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 18px;

    /* Layout */
    --sidebar-width: 280px;
    --header-height: 56px;
}

/* Light mode overrides */
body.light-mode {
    --color-bg: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #f0f2f5;
    --color-surface: #ffffff;
    --color-surface-hover: #f5f5f5;
    --color-border: #e0e0e0;
    --color-text: #1a1a1a;
    --color-text-secondary: #555555;
    --color-text-muted: #999999;
    --color-hover: #f0f0f0;
    --color-primary-hover: #9e1cfb;
    --color-primary-light: rgba(158, 28, 251, 0.12);
}

/* Chat starter light-mode tweaks */
body.light-mode .chat-starters-container {
    background: rgba(255,255,255,0.4);
    border: 1px solid rgba(0,0,0,0.08);
    filter: none;
}
body.light-mode .chat-category-tab {
    background: rgba(0,0,0,0.04);
    color: var(--color-text-secondary);
}
body.light-mode .chat-category-tab.active {
    color: var(--color-text);
    border-bottom-color: var(--color-text);
}
body.light-mode .starter-chip {
    background: #fafafa;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}
body.light-mode .starter-chip:hover {
    background: #f0f0f0;
}


/* ───── Reset ───── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ───── App Layout ───── */
.app {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr var(--sidebar-width);
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
    width: 100%;
    position: relative;
}

/* Overlay gradient behind app but above video
   NOTE: This gradient blanket covers the entire viewport and dims the background video across
   all UI areas (sidebar, chat, playlist). Even at reduced opacity (0.35-0.55), it creates
   a washed-out appearance that masks video clarity. Consider:
   - Removing entirely or making nearly transparent (~0.1-0.2)
   - Applying only to sidebar areas instead of full viewport
   - Using backdrop-filter on UI elements for selective frosting without global dimming
   This is a key source of the faded look compared to the standalone video player.
 */
.app::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(10, 10, 10, 0), rgba(10, 10, 10, 0));
    z-index: -1;
    pointer-events: none;
}

/* ───── Background Video (Responsive Container) ───── */
.background-video-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    pointer-events: none;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
}

/* Consent modal responsive tweaks */
@media (max-width: 640px) {
    /* age consent modal */
    #adultConsentModal > div,
    /* chat consent modal */
    #chatConsentModal .chat-consent-modal > div {
        padding: 1rem !important;
        max-width: 90vw !important;
        margin: 1rem !important;
        max-height: 70vh !important;
        overflow-y: auto !important;
    }
    #adultConsentModal h2,
    #chatConsentModal h2 {
        font-size: 1.0rem !important;
    }
    #adultConsentModal p,
    #chatConsentModal p,
    #adultConsentModal li,
    #chatConsentModal li,
    #adultConsentModal label,
    #chatConsentModal label {
        font-size: 0.8rem !important;
    }
}

/* ───── Consent Modals (Theme-aware) ───── */
.consent-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    display: flex !important;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: rgba(0, 0, 0, 0.85);
    z-index: 9998;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    overflow: auto;
}

.consent-modal-box {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    max-width: 520px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 8px 48px rgba(0, 0, 0, 0.6);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.consent-modal-box h2 {
    margin: 0 0 var(--spacing-lg) 0;
    font-size: 1.3rem;
    color: var(--color-text);
    font-weight: 600;
}

.consent-modal-box .emoji-icon {
    margin: var(--spacing-xl) 0;
    text-align: center;
    font-size: 2.5rem;
}

.consent-modal-box p {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
    font-size: var(--font-size-md);
    line-height: 1.6;
}

.consent-modal-box .terms-box {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background: var(--color-surface);
    border-left: 3px solid var(--color-primary);
    border-radius: var(--radius-md);
}

.consent-modal-box .terms-box ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.consent-modal-box .terms-box li {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    line-height: 1.7;
}

.consent-modal-box .terms-box li strong {
    color: var(--color-accent);
    font-weight: 600;
}

.consent-checkbox-wrapper {
    margin: var(--spacing-xl) 0;
}

/* Custom styled checkbox */
.consent-checkbox-wrapper label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    font-size: var(--font-size-md);
    color: var(--color-text);
    cursor: pointer;
    user-select: none;
}

.consent-checkbox-wrapper input[type="checkbox"] {
    width: 20px;
    height: 20px;
    min-width: 20px;
    cursor: pointer;
    accent-color: var(--color-primary);
    margin-top: 2px;
}

.consent-checkbox-wrapper input[type="checkbox"]:checked {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.consent-actions {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.consent-btn {
    flex: 1;
    padding: var(--spacing-lg);
    border: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--font-size-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: var(--font-family);
}

.consent-btn-accept {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
}

.consent-btn-accept:hover:not(:disabled) {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(115, 0, 255, 0.3);
}

.consent-btn-accept:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.consent-btn-decline {
    background: var(--color-surface);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.consent-btn-decline:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}

/* Light mode tweaks */
body.light-mode .consent-modal-box {
    background: #fafafa;
}

body.light-mode .consent-modal-box .terms-box {
    background: #f5f5f5;
    border-left-color: var(--color-accent);
}

@media (max-width: 640px) {
    .consent-modal-box {
        padding: var(--spacing-lg);
        margin: 0 var(--spacing-sm);
    }

    .consent-modal-box h2 {
        font-size: 1.1rem;
    }

    .consent-modal-box p,
    .consent-modal-box li {
        font-size: var(--font-size-sm);
    }

    .consent-modal-box .terms-box {
        padding: var(--spacing-md);
    }

    .consent-actions {
        flex-direction: column;
    }
}

.background-video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: brightness(1) saturate(0.9);
    pointer-events: none;
}

/* ───── Video Control Bar ───── */
.video-controls-bar {
    padding: 8px 0 4px;
    border-top: 1px solid var(--color-border);
}

.video-controls-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0 var(--spacing-sm);
}

.btn-player {
    padding: 0.2em 0.9em;
    font-family: var(--font-main), Arial, sans-serif;
    font-size: 0.95em;
    font-weight: 600;
    border: none;
    border-radius: 1.6em;
    background: linear-gradient(90deg, var(--color-blue), var(--color-purple));
    color: #fff;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 8px 0 rgba(60, 60, 120, 0.08);
    outline: none;
    min-width: 48px;
    min-height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35em;
    margin: 0.6vh 0;
}

.vcb-btn:active {
    transform: scale(0.9);
}

/* Seek bar */
.vcb-seek {
    flex: 1;
    height: 4px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    cursor: pointer;
    position: relative;
    overflow: visible;
    transition: height 0.15s ease;
    margin-top: 1vh;
    margin-bottom: 1vh;
}

.vcb-seek:hover {
    height: 6px;
}

.vcb-seek-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 2px;
    pointer-events: none;
}

.vcb-seek-handle {
    position: absolute;
    top: 50%;
    left: 0%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: var(--color-primary);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.15s ease;
    pointer-events: none;
}

.vcb-seek:hover .vcb-seek-handle {
    opacity: 1;
}

/* Time display */
.vcb-time {
    flex-shrink: 0;
    font-size: 10px;
    color: var(--color-text-muted);
    font-family: 'Monaco', 'Courier New', monospace;
    white-space: nowrap;
    letter-spacing: -0.3px;
}

/* Volume slider */
.vcb-volume {
    flex-shrink: 0;
    width: 40px;
    max-width: 50px;
    height: 6px;
    border-radius: 3px;
    background: transparent;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    border: none;
    /* visual border handled on track */
    --vol: 100%; /* fallback used by track gradient */
}

.vcb-volume::-webkit-slider-runnable-track {
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--color-primary) var(--vol, 100%), var(--color-surface) var(--vol, 100%));
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.02);
}

.vcb-volume::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    margin-top: -3px;
    box-shadow: 0 0 6px rgba(115,0,255,0.45);
    border: 2px solid rgba(0,0,0,0.25);
}

.vcb-volume::-moz-range-track {
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--color-primary) var(--vol, 100%), var(--color-surface) var(--vol, 100%));
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.02);
}

.vcb-volume::-moz-range-progress {
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.vcb-volume::-moz-range-thumb {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    border: 2px solid rgba(0,0,0,0.25);
    box-shadow: 0 0 6px rgba(115,0,255,0.45);
}

.vcb-volume:focus {
    outline: none;
}

.vcb-volume:hover::-webkit-slider-thumb,
.vcb-volume:focus::-webkit-slider-thumb {
    transform: scale(1.08);
}

.vcb-volume:hover::-moz-range-thumb,
.vcb-volume:focus::-moz-range-thumb {
    transform: scale(1.08);
}

/* ── Keep old class names for any remaining references ── */
.video-controls { display: none; }
.video-progress-container { display: none; }
.video-control-btn { display: none; }
.video-volume-control { display: none; }
.video-volume-slider { display: none; }
.video-progress { display: none; }
.video-time-display { display: none; }

/* ───── Sidebar ───── */
.sidebar {
    width: var(--sidebar-width);
    background: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: transform var(--transition-normal);
    height: 100dvh;
    overflow-y: auto; /* allow the entire sidebar to scroll when content overflows */
    -webkit-overflow-scrolling: touch;
}

.sidebar-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-logo {
    text-decoration: none;
    cursor: pointer;
    transition: opacity 0.2s;
}

.sidebar-logo:hover {
    opacity: 0.8;
}

.sidebar-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-blue), var(--color-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.sidebar-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

.sidebar-section {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: rgba(255,255,255,.02);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin: var(--spacing-sm) var(--spacing-sm) 0;
}

.sidebar-section h3 {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.sidebar-footer {
    margin-top: auto;
    padding: var(--spacing-md) var(--spacing-lg);
    padding-bottom: calc(var(--spacing-md) + env(safe-area-inset-bottom));
    border-top: 1px solid var(--color-border);
}

/* ── Profiles ── */
.profiles-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    max-height: 300px;
    overflow-y: auto;
    padding-right: var(--spacing-xs);
}

/* Scrollbar styling for profiles list */
.profiles-list::-webkit-scrollbar { width: 8px; }
.profiles-list::-webkit-scrollbar-track { background: transparent; }
.profiles-list::-webkit-scrollbar-thumb { background: linear-gradient(180deg, rgba(115,0,255,0.16), rgba(0,119,204,0.16)); border-radius: var(--radius-full); border: 1px solid rgba(0,0,0,0.25); }
.profiles-list { scrollbar-width: thin; scrollbar-color: rgba(115,0,255,0.18) transparent; }

/* ── Sidebar Tabs ── */
.sidebar-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--spacing-sm);
}
.sidebar-tab {
    flex: 1;
    padding: 8px 0;
    border: none;
    background: none;
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 13px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: color 0.2s, border-color 0.2s;
    font-family: inherit;
}
.sidebar-tab.active {
    color: var(--color-text);
    border-bottom-color: var(--color-blue);
}
.sidebar-tab:hover { color: var(--color-text); }
.voices-badge {
    font-size: 10px;
    color: var(--color-text-secondary);
    margin-left: 2px;
}

/* ── Voices List ── */
.voices-list {
    display: flex;
    flex-direction: column;
    max-height: 300px;
    overflow-y: auto;
    padding-right: var(--spacing-xs);
}
.voices-list::-webkit-scrollbar { width: 8px; }
.voices-list::-webkit-scrollbar-track { background: transparent; }
.voices-list::-webkit-scrollbar-thumb { background: linear-gradient(180deg, rgba(115,0,255,0.16), rgba(0,119,204,0.16)); border-radius: var(--radius-full); border: 1px solid rgba(0,0,0,0.25); }
.voices-list { scrollbar-width: thin; scrollbar-color: rgba(115,0,255,0.18) transparent; }
.voice-item {
    padding: 10px var(--spacing-sm);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    transition: background-color 0.15s;
    border-bottom: 1px solid var(--color-border);
}
.voice-item:last-child { border-bottom: none; }
.voice-item:hover { background: var(--color-hover); }
.voice-item-text {
    flex: 1;
    min-width: 0;
    font-size: 12px;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.voice-item-time {
    font-size: 11px;
    color: var(--color-text-secondary);
    margin-top: 3px;
}
.voice-item-del {
    flex-shrink: 0;
    opacity: 0.5;
    transition: opacity 0.15s;
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: 4px;
}
.voice-item-del:hover { opacity: 1; }

.profile-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
    border: none;
    background: transparent;
    color: inherit;
    font: inherit;
    text-align: left;
    width: 100%;
    touch-action: manipulation;
    will-change: background;
}

.profile-item:hover { background: var(--color-hover); }
.profile-item:active,
.profile-item:focus-visible { background: var(--color-primary-light); }
.profile-item.active { background: var(--color-primary-light); border-left: 3px solid var(--color-primary); }

.profile-item .avatar,
.profile-item img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    object-fit: cover;
    flex-shrink: 0;
}

.profile-item .profile-info { flex: 1; min-width: 0; }
.profile-item .profile-name { font-weight: 600; font-size: var(--font-size-sm); }
.profile-item .profile-status { font-size: var(--font-size-xs); color: var(--color-text-muted); }

/* ── Conversation History ── */
.conversation-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    /* allow the conversation list to grow and scroll within the sidebar section */
    flex: 1 1 auto;
    min-height: 0;
    max-height: 180px;
    overflow-y: auto;
    padding-right: var(--spacing-xs);
}

/* Themed scrollbars for the conversation list */
.conversation-list::-webkit-scrollbar { width: 8px; }
.conversation-list::-webkit-scrollbar-track { background: transparent; }
.conversation-list::-webkit-scrollbar-thumb { background: linear-gradient(180deg, rgba(115,0,255,0.16), rgba(0,119,204,0.16)); border-radius: var(--radius-full); border: 1px solid rgba(0,0,0,0.25); }
.conversation-list {
    scrollbar-width: thin; /* Firefox */
    scrollbar-color: rgba(115,0,255,0.18) transparent;
}

/* Sidebar global scrollbar to match site theme */
.sidebar::-webkit-scrollbar { width: 10px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: linear-gradient(180deg, rgba(115,0,255,0.10), rgba(0,119,204,0.10)); border-radius: var(--radius-full); border: 1px solid rgba(0,0,0,0.08); }
.sidebar { scrollbar-width: thin; scrollbar-color: rgba(115,0,255,0.10) transparent; }

.conversation-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
    border: none;
    background: transparent;
    color: inherit;
    font: inherit;
    text-align: left;
    width: 100%;
    touch-action: manipulation;
    will-change: background;
}

.conversation-item:hover { background: var(--color-hover); }
.conversation-item:active,
.conversation-item:focus-visible { background: var(--color-primary-light); }
.conversation-item.active { background: var(--color-primary-light); border-left: 3px solid var(--color-primary); }

.conversation-item .avatar,
.conversation-item img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    object-fit: cover;
    flex-shrink: 0;
}

.conversation-item .conv-info { flex: 1; min-width: 0; }
.conversation-item .conv-header { display: flex; align-items: center; gap: var(--spacing-sm); }
.conversation-item .conv-name { font-weight: 600; font-size: var(--font-size-sm); margin: 0; }
.conversation-item .msg-count {
    min-width: 20px; height: 20px; padding: 0 5px;
    background: var(--color-accent);
    color: white; border-radius: var(--radius-full);
    font-size: 10px; font-weight: 700;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.conversation-item .conv-preview {
    font-size: var(--font-size-xs); color: var(--color-text-muted);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    display: block;
}
.conversation-item .conv-time { font-size: var(--font-size-xs); color: var(--color-text-muted); display: block; }

.conversation-list .empty-state {
    padding: var(--spacing-lg);
    text-align: center; color: var(--color-text-muted); font-size: var(--font-size-sm);
}

/* ── Search Result Items ── */
.search-results-list {
    display: grid;
    gap: var(--spacing-sm);
}

.search-toolbar {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin: 0 0 var(--spacing-sm) 0;
}

.search-filter-chip {
    border: 1px solid var(--color-border);
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    padding: 4px 10px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.search-filter-chip:hover {
    background: var(--color-hover);
    color: var(--color-text);
}

.search-filter-chip.active {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.search-filter-count {
    margin-left: auto;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.search-result-item {
    border: 1px solid transparent;
}
.search-result-item:hover {
    border-color: var(--color-border);
}

.search-result-topline {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    min-width: 0;
}

.search-result-item .profile-name {
    flex: 1;
    min-width: 0;
}

.search-result-role {
    font-size: 10px;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 600;
}
.search-result-role.user {
    background: rgba(52, 211, 153, .15);
    color: #22c55e;
}
.search-result-time {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.search-result-snippet {
    line-height: 1.35;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-time-label {
    margin: var(--spacing-sm) 0 var(--spacing-xs);
}

.search-hit {
    background: rgba(115, 0, 255, 0.2);
    color: var(--color-text);
    border-radius: 4px;
    padding: 0 2px;
}

mark.search-hit {
    background: rgba(115, 0, 255, 0.22) !important;
    color: var(--color-text) !important;
}

/* ── Message Highlight (search navigation) ── */
.message.search-highlight {
    animation: highlight-pulse 1.5s ease-in-out;
    background: rgba(115, 0, 255, 0.1);
    border-left: 3px solid var(--color-primary);
}
@keyframes highlight-pulse {
    0% { background: rgba(115, 0, 255, 0.2); }
    50% { background: rgba(115, 0, 255, 0.1); }
    100% { background: rgba(115, 0, 255, 0.05); }
}

/* ── Connection Status ── */
.connection-status {
    display: flex; align-items: center; gap: var(--spacing-sm);
    font-size: var(--font-size-sm); color: var(--color-text-secondary);
}
.status-dot {
    width: 8px; height: 8px; border-radius: var(--radius-full);
    background: var(--color-warning); animation: pulse 2s infinite;
}
.status-dot.connected { background: var(--color-success); }
.status-dot.disconnected { background: var(--color-error); animation: none; }

@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.5} }

/* ── Settings ── */
.setting-item { display: flex; align-items: center; justify-content: space-between; padding: var(--spacing-xs) 0; }

.toggle {
    width: 44px; height: 24px;
    background: var(--color-border); border: none; border-radius: var(--radius-full);
    cursor: pointer; position: relative; transition: background var(--transition-fast); padding: 0; flex-shrink: 0;
}
.toggle:hover { background: var(--color-surface-hover); }
.toggle.active { background: var(--color-primary); }
.toggle-slider {
    position: absolute; top: 2px; left: 2px;
    width: 20px; height: 20px; background: white; border-radius: var(--radius-full);
    transition: transform var(--transition-fast); box-shadow: var(--shadow-sm);
}
.toggle.active .toggle-slider { transform: translateX(20px); }


/* ───── Chat Container ───── */
.chat-container {
    display: flex;
    flex-direction: column;
    background: transparent;
    overflow: hidden;
    min-height: 0;
    position: relative;
    z-index: 1;
}

/* ───── Background Playlist Sidebar ───── */
.background-playlist-sidebar {
    border-left: 1px solid var(--color-border);
}

.background-playlist-section {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    background: transparent;
        /* new code placeholder */
    margin: 0;
}

.background-playlist-current {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    min-height: 1.5em;
}

.background-search-input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.background-search-input {
    width: 100%;
    padding: 0.625rem 2.5rem 0.625rem 0.75rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: inherit;
    font-size: var(--font-size-sm);
    outline: none;
    transition: border-color var(--transition-fast);
}

.background-search-input:focus {
    border-color: var(--color-accent);
}

.background-search-input::placeholder {
    color: var(--color-text-muted);
}

.background-search-btn {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    background: none;
    border: none;
    color: var(--color-text-muted);
    padding: 0 0.625rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast);
}

.background-search-btn:hover {
    color: var(--color-text);
}

.background-playlist-tabs {
    display: flex;
    gap: var(--spacing-xs);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.background-playlist-tab {
    padding: var(--spacing-xs) var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: color var(--transition-fast), border-color var(--transition-fast);
    border-bottom: 2px solid transparent;
    margin-bottom: -1.375rem;
    padding-bottom: calc(var(--spacing-sm) + 1.375rem);
}

.background-playlist-tab:hover {
    color: var(--color-text);
}

.background-playlist-tab.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.background-playlist-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    margin-top: auto;
    padding-top: var(--spacing-md);
}

.background-pagination-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.background-pagination-btn:hover:not(:disabled) {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.background-pagination-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.background-pagination-info {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    min-width: 50px;
    text-align: center;
}

.background-playlist-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    overflow-y: auto;
    flex: 1;
    min-height: 0;
    padding: var(--spacing-sm);
}

/* Match themed scrollbars for background playlist */
.background-playlist-items::-webkit-scrollbar { width: 8px; }
.background-playlist-items::-webkit-scrollbar-track { background: transparent; }
.background-playlist-items::-webkit-scrollbar-thumb { background: linear-gradient(180deg, rgba(115,0,255,0.12), rgba(0,119,204,0.12)); border-radius: var(--radius-full); border: 1px solid rgba(0,0,0,0.15); }
.background-playlist-items { scrollbar-width: thin; scrollbar-color: rgba(115,0,255,0.12) transparent; }

.background-playlist-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-fast);
    overflow: hidden;
    text-decoration: none;
    flex-shrink: 0;
}

 .background-playlist-item:hover {
    background: rgba(0, 119, 204, 0.08);
    border-color: var(--color-blue);
    transform: translateY(-2px);
}
body.light-mode .background-playlist-item:hover {
    background: rgba(0, 119, 204, 0.12);
}

.background-playlist-item.restricted {
    opacity: 0.6;
    cursor: not-allowed;
}

.background-playlist-item.restricted:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-border);
    transform: none;
}

.background-playlist-item.active {
    border-color: var(--color-blue);
    background: var(--color-primary-light);
}

.background-playlist-thumbnail {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 */
    overflow: hidden;
    border-radius: var(--radius-md);
    background: var(--color-bg);
    flex-shrink: 0;
}

.background-playlist-thumbnail img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.background-playlist-item:hover .background-playlist-thumbnail img {
    transform: scale(1.05);
}

.background-playlist-thumbnail .duration {
    position: absolute;
    bottom: 4px;
    right: 4px;
    background: rgba(0, 0, 0, 0.8);
    color: var(--color-white);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.background-playlist-thumbnail .privacy-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    background: rgba(0, 0, 0, 0.9);
    font-size: 18px;
    padding: 4px 6px;
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.background-playlist-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.background-playlist-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}

.background-playlist-uploader {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.background-playlist-uploader .uploader-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.background-playlist-uploader .uploader-link:hover {
    color: var(--color-blue);
}

/* Tier badges matching watchref.php structure */
.tier-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    vertical-align: middle;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.tier-badge i {
    font-size: 0.75em;
}

.tier-king {
    color: #f7c32e;
}

.tier-elite {
    color: #78d4ff;
}

.tier-valid {
    color: #4ade80;
}

.background-playlist-stats {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

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

.stat-item i {
    opacity: 0.7;
}

.background-playlist-empty {
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

@media (max-width: 1024px) {
    .app {
        grid-template-columns: var(--sidebar-width) 1fr;
    }
    
    .background-playlist-sidebar {
        display: none;
    }
    
    .background-playlist-sidebar.mobile-open {
        display: flex;
        flex-direction: column;
        position: fixed;
        inset: 0;
        z-index: 1000;
        width: 100%;
        height: 100%;
        border: none;
        background: linear-gradient(135deg, var(--color-bg-secondary), var(--color-bg));
        animation: slideUp 300ms ease-out;
    }
    
    @keyframes slideUp {
        from {
            transform: translateY(100%);
            opacity: 0;
        }
        to {
            transform: translateY(0);
            opacity: 1;
        }
    }
    
    .background-playlist-sidebar.mobile-open .sidebar-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: var(--spacing-lg);
        border-bottom: 1px solid var(--color-border);
    }
    
    .background-playlist-sidebar.mobile-open .sidebar-header h3 {
        flex: 1;
        margin: 0;
    }
    
    .background-playlist-sidebar.mobile-open #background-close-btn {
        padding: var(--spacing-sm);
    }
}

@media (max-width: 720px) {
    .input-wrapper {
        gap: var(--spacing-xs);
    }

    .input-actions {
        gap: 0.35rem;
    }
    .btn-send {
        min-width: 36px;
        height: 24px;
        font-size: 9px;
        padding: 0 10px;
    }

    .btn-player {
        min-width: 28px;
        min-height: 18px;
        padding: 0 0.35em;
        font-size: 8px;
    }

    .btn-video-fit {
        width: 28px;
        height: 28px;
        border-radius: 10px;
    }
}

@media (max-width: 520px) {
    .input-wrapper {
        gap: 0.25rem;
    }

    .input-wrapper textarea {
        min-width: 0;
    }

    .input-actions {
        gap: 0.2rem;
    }
}

@media (max-width: 360px) {
    .input-wrapper {
        padding: 0.35rem 0.5rem;
    }

    .input-actions {
        gap: 0.15rem;
    }

    .btn-send {
        min-width: 30px;
        height: 22px;
        font-size: 8px;
        padding: 0 8px;
    }

    .btn-player {
        min-width: 24px;
        min-height: 16px;
        padding: 0 0.25em;
        font-size: 7px;
    }

    .btn-video-fit {
        width: 26px;
        height: 26px;
    }
}

/* ── Chat Header ── */
.chat-header {
    min-height: var(--header-height);
    padding: 0 var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex; align-items: center; gap: var(--spacing-lg); justify-content: space-between;
    background: var(--color-bg-secondary);
    flex-shrink: 0;
}

.background-open-btn {
    display: none;
    margin-left: auto;
}

@media (max-width: 1024px) {
    .background-open-btn {
        display: flex;
    }
}

@media (min-width: 1025px) {
    .background-open-btn {
        display: none !important;
    }
}

.header-profile { display: flex; align-items: center; gap: var(--spacing-md); flex: 1; min-width: 0; }
.header-profile .avatar {
    width: 36px; height: 36px; border-radius: var(--radius-full);
    object-fit: cover;
}
.header-info { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.header-info h1 { font-size: var(--font-size-lg); font-weight: 600; margin: 0; line-height: 1.2; }

.header-meta {
    display: flex; align-items: center; gap: var(--spacing-sm); flex-wrap: wrap;
    font-size: var(--font-size-xs); color: var(--color-text-secondary);
}
.status-indicator { font-size: var(--font-size-xs); color: var(--color-success); }
.status-indicator.active::before { content: '● '; }
.model-name { color: var(--color-text-muted); }
.header-details { color: var(--color-text-muted); }
.header-actions { display: flex; gap: var(--spacing-sm); }

/* ── Buttons ── */

.btn-icon {
    width: 30px;
    height: 30px;
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    box-shadow: none;
}
.btn-icon svg {
    width: 16px;
    height: 16px;
}
.btn-icon:hover {
    background: var(--color-hover);
    color: var(--color-text);
}

/* Special style for background playlist open button */
.background-open-btn {
    background: linear-gradient(90deg, var(--color-blue), var(--color-purple));
    color: #fff;
    border-radius: var(--radius-full);
    border: none;
    padding: 0;
    width: 32px;
    height: 32px;
    min-width: 32px;
    min-height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px 0 rgba(0, 119, 204, 0.12);
    cursor: pointer;
}

.background-open-btn svg {
    width: 18px;
    height: 18px;
    color: #fff;
}

.background-open-btn:hover {
    box-shadow: 0 4px 12px 0 rgba(115, 0, 255, 0.20);
    transform: translateY(-1px);
}

/* Messages toggle button */
.messages-toggle-btn {
    display: flex;
}

.messages-container {
    transition: opacity 0.3s var(--transition-fast), visibility 0.3s var(--transition-fast);
}

.messages-container.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.btn-primary {
    display: flex; align-items: center; justify-content: center; gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-primary); color: white; border: none;
    border-radius: var(--radius-md); font-size: var(--font-size-sm); font-weight: 500;
    cursor: pointer; transition: all var(--transition-fast);
}
.btn-primary:hover { background: var(--color-primary-hover); transform: translateY(-1px); }

.btn-primary.full-width,
.btn-secondary.full-width,
.btn-panel.full-width { width: 100%; }

.btn-secondary {
    display: flex; align-items: center; gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-primary); color: white; border: none;
    border-radius: var(--radius-md); font-size: var(--font-size-sm); font-weight: 500;
    cursor: pointer; transition: all var(--transition-fast);
}
.btn-secondary:hover { background: var(--color-primary-hover); transform: translateY(-1px); }
.btn-secondary.ghost {
    background: transparent; color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}
.btn-secondary.ghost:hover { background: var(--color-primary-light); }

.btn-panel {
    display: flex; align-items: center; justify-content: center; gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md); border: 1px solid var(--color-border);
    background: transparent; color: var(--color-text); font-size: var(--font-size-sm); font-weight: 500;
    cursor: pointer; transition: border-color var(--transition-fast), background var(--transition-fast);
}
.btn-panel:hover { border-color: var(--color-accent); background: rgba(0,119,204,.08); }
body.light-mode .btn-panel:hover { background: rgba(0, 119, 204, 0.12); }

.mobile-menu { display: none; }


/* ───── Messages ───── */
.messages-container {
    flex: 1; overflow-y: auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex; flex-direction: column; gap: var(--spacing-sm);
    padding-bottom: var(--spacing-lg); min-height: 0;
}
.messages-container::-webkit-scrollbar { width: 5px; }
.messages-container::-webkit-scrollbar-track { background: transparent; }
.messages-container::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }

/* Welcome */
.welcome-message {
    flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
    text-align: center; color: var(--color-text-secondary);
}
.welcome-icon { 
    font-size: 48px; 
    margin-bottom: var(--spacing-lg); 
    position: relative;
    display: inline-block;
    cursor: pointer;
    transition: transform 0.15s ease, filter 0.15s ease;
}

.welcome-icon:hover {
    transform: scale(1.03);
    filter: brightness(1.05);
}

.welcome-icon::before {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    background: conic-gradient(#7300ff, #0077cc, #7300ff);
    animation: gradientSpin 4s linear infinite;
    z-index: -1;
}

@keyframes gradientSpin {
    0% { transform: rotate(0deg); opacity: 0.7; }
    50% { opacity: 1; }
    100% { transform: rotate(360deg); opacity: 0.7; }
}

.welcome-icon .avatar {
    width: 200px;
    height: 200px;
    border-radius: var(--radius-full);
    object-fit: cover;
    box-shadow: var(--shadow-md);
}
.welcome-message h2 { font-size: var(--font-size-xl); font-weight: 600; color: var(--color-text); margin-bottom: var(--spacing-sm); }
.welcome-message p { font-size: var(--font-size-md); }

/* Message bubbles */
.message {
    display: flex; gap: var(--spacing-sm);
    max-width: 80%; animation: msgIn .25s ease;
    animation-delay: var(--entry-delay, 0ms);
    animation-fill-mode: backwards;
}

/* ─── Time Separators ─── */
.message-time-separator {
    margin: 1.5rem 0 1rem 0;
    text-align: center;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

body.light-mode .message-time-separator {
    color: #333333;
    opacity: 0.7;
}

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

.message.user { margin-left: auto; flex-direction: row-reverse; }

.message .avatar {
    width: 30px; height: 30px; border-radius: var(--radius-full);
    object-fit: cover; flex-shrink: 0;
    cursor: pointer;
}
.message-content { display: flex; flex-direction: column; gap: 2px; }

.message-bubble {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg); font-size: var(--font-size-md);
    line-height: 1.55; word-wrap: break-word;
    white-space: pre-wrap;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.message.ai .message-bubble {
    background: rgba(30, 30, 30, 0.45); color: var(--color-text);
    border-bottom-left-radius: var(--radius-sm);
    box-shadow: 0 2px 8px rgba(0,0,0,.0);
}

body.light-mode .message.ai .message-bubble {
    background: rgba(244, 244, 244, 0.45);
    color: var(--color-text);
}

.message.user .message-bubble {
    background: linear-gradient(135deg, #7300ff 0%, #0077cc 100%);
    color: white;
    border-bottom-right-radius: var(--radius-sm);
    box-shadow: 0 2px 12px rgba(115,0,255,0.0), 0 2px 12px rgba(0,119,204,0.0);
}

.message-time { font-size: var(--font-size-xs); color: var(--color-text-muted); }

.message-meta {
    display: flex; align-items: center; gap: 8px;
    font-size: var(--font-size-xs); color: var(--color-text-muted);
}

.message-status {
    font-size: 10px; text-transform: lowercase;
    opacity: 0.6; transition: opacity 0.3s ease, color 0.3s ease;
}

.message-status.seen {
    opacity: 0.9; color: var(--color-text-muted);
    animation: seenAppear 0.4s ease-out;
}

@keyframes seenAppear {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 0.9; transform: scale(1); }
}

/* Streaming cursor */
.message-bubble .streaming-cursor {
    display: inline-block; width: 2px; height: 1em; background: var(--color-text);
    margin-left: 2px; vertical-align: text-bottom;
    animation: blink .7s steps(2) infinite;
}
@keyframes blink { 0%{opacity:1} 100%{opacity:0} }


/* ── Typing Indicator ── */
.typing-indicator {
    display: none;
    gap: var(--spacing-sm);
    max-width: 80%;
    animation-delay: var(--entry-delay, 0ms);
    animation-fill-mode: backwards;
}
.typing-indicator.visible {
    display: flex;
    align-items: flex-end;
    animation: msgIn 0.25s ease, fadeInTyping 0.4s ease;
}
.typing-indicator .avatar { width: 30px; height: 30px; border-radius: var(--radius-full); object-fit: cover; flex-shrink: 0; cursor: pointer; }
.typing-bubble {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(30, 30, 30, 0.45);
    color: var(--color-text);
    border-radius: var(--radius-lg);
    border-bottom-left-radius: var(--radius-sm);
    font-size: var(--font-size-md);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
.typing-dots {
    display: flex;
    gap: 6px;
    align-items: center;
}
.typing-dots span {
    width: 7px;
    height: 7px;
    background: var(--color-text-muted);
    border-radius: var(--radius-full);
    animation: typing 1.4s infinite;
}
.typing-dots span:nth-child(2) { animation-delay: .2s; }
.typing-dots span:nth-child(3) { animation-delay: .4s; }
.typing-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: lowercase;
    letter-spacing: 0.15em;
    white-space: nowrap;
}

body.light-mode .typing-bubble {
    background: rgba(26, 26, 26, 0.06);
    color: var(--color-text);
}

@keyframes typing { 0%,60%,100%{transform:translateY(0);opacity:.4} 30%{transform:translateY(-4px);opacity:1} }
@keyframes fadeInTyping { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }


/* ───── Chat Input ───── */
.chat-input {
    padding: var(--spacing-sm) var(--spacing-lg);
    padding-bottom: calc(var(--spacing-sm) + max(env(safe-area-inset-bottom), 6px));
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    flex-shrink: 0; position: relative; z-index: 50;
}

.chat-starters-container {
    margin: 2rem 1rem 1rem 1rem;
    padding: 1rem;
    background: rgba(30,30,30,0.15); /* semi-transparent for space feel */
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-lg);
    animation: fadeIn 0.3s ease;
    z-index: 10;
    filter: saturate(0.6);
}

.chat-starters-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
}

.chat-starters-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-muted);
}

.chat-category-tabs {
    display: flex;
    gap: var(--spacing-xs);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
    align-items: center;
}

.chat-category-tab {
    padding: calc(var(--spacing-xs) / 2) var(--spacing-md);
    background: rgba(30,30,30,0.08); /* subtle theme tint */
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 600;
    transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
    border-bottom: 2px solid transparent;
}

.chat-category-tab:hover,
.chat-category-tab:focus-visible {
    color: var(--color-text);
}

.chat-category-tab:focus-visible {
    outline: none;
    border-bottom-color: var(--color-accent);
}

.chat-category-tab.active {
    color: var(--color-text);
    border-bottom-color: var(--color-text);
}

.chat-starters-chips {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.starter-chip {
    padding: 0.5rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.starter-chip:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-border);
    box-shadow: none;
}

.starter-chip:active {
    transform: scale(0.98);
}

.input-wrapper {
    display: flex; align-items: center; gap: var(--spacing-sm);
    background: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xs) var(--spacing-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.input-wrapper:focus-within { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(115, 0, 255, 0.28); }

.input-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}


.input-wrapper textarea {
    flex: 1; background: transparent; border: none;
    color: var(--color-text); font-family: inherit; font-size: var(--font-size-md);
    line-height: 1.5; resize: none; max-height: 120px; outline: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    margin-bottom: 1vh;
    margin-top: 1vh;
    transition: box-shadow var(--transition-fast), color var(--transition-fast);
    box-shadow: 0 0 0 0 transparent;
    caret-color: var(--color-primary);
}
.input-wrapper textarea::placeholder { color: var(--color-text-muted); }
.input-wrapper textarea:focus {
    box-shadow: 0 0 0 2px rgba(115, 0, 255, 0.2);
}

.input-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    padding-top: 0.25rem;
}

.tips-btn {
    flex: 0 0 auto;
}

.usage-meter-container {
    position: relative;
    display: flex;
    align-items: center;
    flex: 0 0 auto;
}

.usage-btn {
    padding: 2px 4px;
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-family: var(--font-family);
    font-size: 10px;
    letter-spacing: 0.05em;
    cursor: pointer;
    white-space: nowrap;
    transition: color var(--transition-fast), opacity var(--transition-fast);
    opacity: 0.7;
}

.usage-btn:hover {
    color: var(--color-text);
    opacity: 1;
}

.usage-dropdown {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 0;
    background: var(--color-bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 8px;
    min-width: 180px;
    display: none;
    flex-direction: column;
    gap: 8px;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.usage-dropdown.open {
    display: flex;
}

body.light-mode .usage-dropdown {
    border-color: rgba(0, 0, 0, 0.1);
}

.usage-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    padding-bottom: 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

body.light-mode .usage-header {
    border-bottom-color: rgba(0, 0, 0, 0.08);
}

.usage-tier {
    font-weight: 500;
    color: var(--color-text);
}

.usage-pct {
    color: var(--color-text);
    font-weight: 500;
}

.usage-track {
    position: relative;
    width: 100%;
    height: 3px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.usage-fill {
    display: block;
    height: 100%;
    width: 0;
    background: rgba(102, 102, 102, 0.5);
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
}

body.light-mode .usage-track {
    background: rgba(0, 0, 0, 0.08);
}

body.light-mode .usage-fill {
    background: rgba(153, 153, 153, 0.5);
}

.usage-upgrade {
    padding-top: 8px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    text-align: center;
}

body.light-mode .usage-upgrade {
    border-top-color: rgba(0, 0, 0, 0.08);
}

.upgrade-link {
    display: inline-block;
    padding: 4px 8px;
    font-size: 11px;
    font-weight: 500;
    color: var(--color-accent);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.upgrade-link:hover {
    background-color: rgba(0, 119, 204, 0.1);
}

body.light-mode .upgrade-link:hover {
    background-color: rgba(0, 119, 204, 0.08);
}

.usage-details {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.usage-detail-row {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.usage-detail-label {
    color: var(--color-text-muted);
}

.usage-detail-value {
    color: var(--color-text);
    font-weight: 500;
}

.char-count-meter {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 0 0 auto;
}

.char-count {
    font-family: var(--font-family);
    font-size: var(--font-size-xs);
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.btn-send {
    min-width: 72px;
    height: 34px;
    background: linear-gradient(145deg, var(--color-blue), var(--color-purple));
    border: none; border-radius: var(--radius-full); color: white;
    cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    flex-shrink: 0; position: relative; overflow: hidden; font-weight: 500; font-size: 12px;
    letter-spacing: 0; padding: 0 18px;
    text-transform: lowercase; font-family: var(--font-family, 'Inter', sans-serif);
    margin: 0;
    transform: scale(1);
}

.btn-send:hover {
    transform: scale(1.02);
    box-shadow: 0 0 24px rgba(57, 83, 166, 0.6);
}

.btn-send:active {
    transform: scale(0.98);
}
.btn-send.send-pulse {
    animation: sendPulse 0.32s ease;
    box-shadow: 0 0 30px rgba(115, 0, 255, 0.55);
}
.btn-send:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    box-shadow: none;
    filter: grayscale(0.3);
    transform: scale(1);
}

@keyframes sendPulse {
    0% { transform: scale(1); }
    55% { transform: scale(0.95); }
    100% { transform: scale(1); }
}
.btn-video-fit {
    padding: 0;
    width: 34px;
    height: 34px;
    min-width: unset;
    min-height: unset;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    color: #aaa;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s, background 0.15s;
    outline: none;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    box-sizing: border-box;
}

.btn-video-fit:hover {
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
}

.btn-video-fit.active {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.3);
    color: #fff;
}

#video-stop-btn {
    width: 24px;
    height: 24px;
    min-width: 24px;
    min-height: 24px;
    padding: 0;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.10);
    box-shadow: none;
}

#video-stop-btn:hover {
    background: rgba(255, 255, 255, 0.10);
    border-color: rgba(255, 255, 255, 0.18);
}

#video-stop-btn svg {
    width: 11px;
    height: 11px;
}

/* Light mode button styling */
body.light-mode .btn-video-fit {
    background: rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.1);
    color: #555;
}

body.light-mode .btn-video-fit:hover {
    border-color: rgba(0, 0, 0, 0.2);
    background: rgba(0, 0, 0, 0.08);
    color: #000;
}

body.light-mode .btn-video-fit.active {
    background: rgba(0, 0, 0, 0.12);
    border-color: rgba(0, 0, 0, 0.3);
    color: #000;
}

body.light-mode #video-stop-btn {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.10);
}

body.light-mode #video-stop-btn:hover {
    background: rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.18);
}

.btn-video-fit svg {
    width: 18px;
    height: 18px;
}

/* ───── Tips Carousel Modal ───── */
.tips-card {
    background: var(--color-bg-secondary);
    border-radius: 16px;
    width: min(92vw, 480px);
    box-shadow: 0 24px 60px rgba(0,0,0,0.40);
    border: 1px solid rgba(255,255,255,0.09);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.tips-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 18px 12px;
    border-bottom: 1px solid var(--color-border);
    gap: 10px;
}

.tips-section-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    flex-shrink: 0;
}

.tips-title {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
}

.tips-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    padding: 0 2px;
    flex-shrink: 0;
}
.tips-close:hover { color: var(--color-text); }

.tips-body {
    padding: 16px 18px;
    font-size: 13.5px;
    line-height: 1.6;
    color: var(--color-text-secondary);
    min-height: 160px;
}

.tips-list {
    margin: 0;
    padding-left: 18px;
    display: grid;
    gap: 8px;
}

.tips-symbols {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tips-symbol-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.tips-icon-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    min-width: 32px;
    border-radius: 10px;
    background: var(--color-surface, rgba(255,255,255,0.06));
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    flex-shrink: 0;
}

.tips-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 18px 14px;
    border-top: 1px solid var(--color-border);
    gap: 12px;
}

.tips-nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    flex-shrink: 0;
}
.tips-nav-btn:hover:not(:disabled) {
    background: var(--color-hover);
    color: var(--color-text);
}
.tips-nav-btn:disabled {
    opacity: 0.3;
    cursor: default;
}

.tips-dots {
    display: flex;
    align-items: center;
    gap: 6px;
}

.tips-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    border: none;
    background: var(--color-border);
    cursor: pointer;
    padding: 0;
    transition: background 0.15s, transform 0.15s;
}
.tips-dot.active {
    background: var(--color-primary);
    transform: scale(1.3);
}

body.light-mode .tips-icon-chip {
    background: rgba(0,0,0,0.05);
    border-color: rgba(0,0,0,0.1);
    color: #555;
}

/* ───── Voice / TTS ───── */
#tts-mode-btn.active {
    color: var(--color-primary);
    background: rgba(115, 0, 255, 0.12);
}

.message-meta-row {
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-copy {
    background: none;
    border: none;
    padding: 2px;
    cursor: pointer;
    color: var(--color-text-muted);
    opacity: 0;
    transition: opacity 0.15s, color 0.15s;
    display: flex;
    align-items: center;
    line-height: 1;
}
.message.ai:hover .btn-copy {
    opacity: 0.6;
}
.btn-copy:hover {
    opacity: 1 !important;
    color: var(--color-text);
}
.btn-copy.copied {
    opacity: 1 !important;
    color: var(--color-success, #2ecc71);
}

.btn-read-aloud {
    background: none;
    border: none;
    padding: 2px;
    cursor: pointer;
    color: var(--color-text-muted);
    opacity: 0;
    transition: opacity 0.15s, color 0.15s;
    display: flex;
    align-items: center;
    line-height: 1;
}
.message.ai:hover .btn-read-aloud {
    opacity: 0.6;
}
.btn-read-aloud:hover {
    opacity: 1 !important;
    color: var(--color-accent);
}

@keyframes ttsPulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

/* ───── TTS-only panel ───── */
.tts-panel {
    padding: 8px 12px 4px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    animation: fadeInPanel 0.2s ease;
}
body.light-mode .tts-panel {
    border-top-color: rgba(0, 0, 0, 0.08);
}
@keyframes fadeInPanel {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}
.tts-input-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(115, 0, 255, 0.25);
    border-radius: var(--radius-lg);
    padding: 6px 8px;
    transition: border-color 0.15s;
}
.tts-input-wrapper:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(115, 0, 255, 0.15);
}
body.light-mode .tts-input-wrapper {
    background: rgba(0, 0, 0, 0.02);
    border-color: rgba(115, 0, 255, 0.2);
}
#tts-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--color-text);
    font-family: inherit;
    font-size: var(--font-size-md);
    line-height: 1.4;
    resize: none;
    max-height: 80px;
    caret-color: var(--color-primary);
}
#tts-input::placeholder {
    color: var(--color-text-muted);
    font-style: italic;
}
.btn-listen {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 12px;
    height: 28px;
    background: rgba(115, 0, 255, 0.2);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-full);
    color: var(--color-primary);
    font-family: inherit;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
    flex-shrink: 0;
}
.btn-listen:hover {
    background: var(--color-primary);
    color: #fff;
}
.btn-listen.tts-loading,
.btn-listen.tts-playing {
    background: var(--color-primary);
    color: #fff;
}
.tts-char-count {
    text-align: right;
    font-size: 10px;
    color: var(--color-text-muted);
    padding-top: 2px;
    padding-right: 2px;
    opacity: 0.6;
}

/* ───── TTS player slot (inline, between chat input and TTS panel) ───── */
.tts-player-slot {
    padding: 6px 0 2px;
    border-top: 1px solid rgba(115, 0, 255, 0.15);
    animation: fadeInPanel 0.2s ease;
}
body.light-mode .tts-player-slot {
    border-top-color: rgba(115, 0, 255, 0.1);
}

/* ───── TTS player card (inline) ───── */
.tts-player {
    background: rgba(115, 0, 255, 0.06);
    border: 1px solid rgba(115, 0, 255, 0.25);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    animation: ttsPlayerIn 0.2s ease;
}
@keyframes ttsPlayerIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}
body.light-mode .tts-player {
    background: rgba(115, 0, 255, 0.04);
    border-color: rgba(115, 0, 255, 0.2);
}
.tts-player-preview {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-bottom: 10px;
    line-height: 1.4;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
}
.tts-player-body {
    display: flex;
    align-items: center;
    gap: 8px;
}
.tts-player-play {
    width: 30px;
    height: 30px;
    flex-shrink: 0;
    background: var(--color-primary);
    border: none;
    border-radius: 50%;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.15s;
    padding: 0;
}
.tts-player-play:hover { opacity: 0.85; }
.tts-player-track {
    flex: 1;
    height: 4px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 2px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}
body.light-mode .tts-player-track { background: rgba(0, 0, 0, 0.1); }
.tts-player-fill {
    height: 100%;
    width: 0;
    background: var(--color-primary);
    border-radius: 2px;
    transition: width 0.1s linear;
}
.tts-player-volume {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 0 0 clamp(82px, 10vw, 126px);
    width: clamp(82px, 10vw, 126px);
    min-width: 0;
}
.tts-player-volume-btn {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: color 0.15s, background 0.15s;
    padding: 0;
}
.tts-player-volume-btn:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.06);
}
body.light-mode .tts-player-volume-btn:hover { background: rgba(0, 0, 0, 0.06); }
.tts-player-volume-slider {
    flex: 1;
    min-width: 0;
    width: 100%;
    height: 4px;
    margin: 0;
    appearance: none;
    -webkit-appearance: none;
    background: transparent;
    cursor: pointer;
}
.tts-player-volume-slider:focus {
    outline: none;
}
.tts-player-volume-slider::-webkit-slider-runnable-track {
    height: 4px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 999px;
}
body.light-mode .tts-player-volume-slider::-webkit-slider-runnable-track { background: rgba(0, 0, 0, 0.1); }
.tts-player-volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    margin-top: -4px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 0;
}
.tts-player-volume-slider::-moz-range-track {
    height: 4px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 999px;
}
body.light-mode .tts-player-volume-slider::-moz-range-track { background: rgba(0, 0, 0, 0.1); }
.tts-player-volume-slider::-moz-range-thumb {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 0;
}
.tts-player-dl {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    border-radius: var(--radius-md);
    transition: color 0.15s, background 0.15s;
    text-decoration: none;
}
.tts-player-dl:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.06);
}
body.light-mode .tts-player-dl:hover { background: rgba(0, 0, 0, 0.06); }
.tts-player-close {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: color 0.15s;
    padding: 0;
}
.tts-player-close:hover { color: var(--color-text); }
.tts-player-volume-slider::-ms-track {
    height: 4px;
    background: transparent;
    border-color: transparent;
    color: transparent;
}
.toast.info { border-left: 3px solid var(--color-accent); }

@media (max-width: 540px) {
    .tts-player-volume {
        flex-basis: clamp(62px, 18vw, 92px);
        width: clamp(62px, 18vw, 92px);
    }

    .tts-player-volume-slider {
        min-width: 0;
    }
}

@keyframes toastIn { from{opacity:0;transform:translateX(100%)} to{opacity:1;transform:translateX(0)} }


/* ───── Confirm Modal ───── */
.confirm-modal {
    position: fixed; inset: 0; background: rgba(0,0,0,.6);
    display: flex; align-items: center; justify-content: center; z-index: 2000;
    animation: fadeIn .2s ease;
}
@keyframes fadeIn { from{opacity:0} to{opacity:1} }

.confirm-dialog {
    background: var(--color-bg-secondary); border: 1px solid var(--color-border);
    border-radius: var(--radius-lg); padding: var(--spacing-xl);
    max-width: 380px; width: 90%; box-shadow: var(--shadow-lg);
    animation: slideUp .25s ease;
}
@keyframes slideUp { from{opacity:0;transform:translateY(16px)} to{opacity:1;transform:translateY(0)} }

.confirm-dialog h3 { font-size: var(--font-size-lg); font-weight: 600; margin-bottom: var(--spacing-md); }
.confirm-dialog p { font-size: var(--font-size-md); color: var(--color-text-secondary); margin-bottom: var(--spacing-xl); line-height: 1.5; }
.confirm-actions { display: flex; gap: var(--spacing-md); justify-content: flex-end; }

.btn-confirm-cancel,
.btn-confirm-ok {
    padding: var(--spacing-sm) var(--spacing-lg); border: none; border-radius: var(--radius-md);
    font-size: var(--font-size-sm); font-weight: 500; cursor: pointer; transition: all var(--transition-fast);
}
.btn-confirm-cancel { background: var(--color-border); color: var(--color-text-secondary); }
.btn-confirm-cancel:hover { background: var(--color-surface-hover); color: var(--color-text); }
.btn-confirm-ok { background: var(--color-error); color: white; }
.btn-confirm-ok:hover { background: #dc2626; transform: translateY(-1px); }


/* ───── Skeleton Loaders ───── */
.skeleton {
    background: linear-gradient(90deg, var(--color-surface) 0%, var(--color-surface-hover) 50%, var(--color-surface) 100%);
    background-size: 200% 100%;
    animation: skeleton-load 1.5s infinite;
    border-radius: var(--radius-md);
}

.skeleton-text {
    height: 60px;
    background: linear-gradient(90deg, var(--color-surface) 0%, var(--color-surface-hover) 50%, var(--color-surface) 100%);
    background-size: 200% 100%;
    animation: skeleton-load 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes skeleton-load {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-profile {
    display: flex; align-items: center; gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}
.skeleton-profile .avatar { width: 36px; height: 36px; border-radius: var(--radius-full); }
.skeleton-profile .info { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.skeleton-profile .name { width: 70%; height: 14px; }
.skeleton-profile .status { width: 50%; height: 12px; }

/* ───── Copy Button (on message hover) ───── */
.message-copy-btn {
    display: none; position: absolute; top: 4px; right: 4px;
    width: 28px; height: 28px; padding: 0; border: none;
    background: rgba(0,119,204,.15); color: var(--color-accent);
    border-radius: var(--radius-md); cursor: pointer;
    transition: all var(--transition-fast); font-size: 12px;
}
.message:hover .message-copy-btn { display: flex; align-items: center; justify-content: center; }
.message-copy-btn:hover { background: var(--color-accent); color: white; }

.message {
    position: relative;
}

/* ───── Search Box ───── */
.conversation-search {
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
}
.search-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: inherit;
    font-size: var(--font-size-sm);
    outline: none;
    transition: border-color var(--transition-fast);
}
.search-input:focus { border-color: var(--color-accent); }
.search-input::placeholder { color: var(--color-text-muted); }

/* Time group separator */
.conversation-time-group {
    display: contents; /* Flatten: don't create a box, just pass through */
}
.conversation-time-label {
    font-size: var(--font-size-xs); font-weight: 600; text-transform: uppercase;
    color: var(--color-text-muted); padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-xs);
    border-bottom: 1px solid var(--color-border); margin-top: var(--spacing-sm);
    display: block;
    pointer-events: none; /* Prevent label from intercepting touches */
    user-select: none;
}
.conversation-time-label:first-of-type { margin-top: 0; }


/* ───── Mobile ───── */
@media (max-width: 768px) {
    .app {
        grid-template-columns: 1fr;
    }

    .sidebar:not(.background-playlist-sidebar) {
        position: fixed; left: 0; top: 0; height: 100%; z-index: 100;
        transform: translateX(-100%); overflow-y: auto;
    }
    .sidebar:not(.background-playlist-sidebar).open { transform: translateX(0); }

    .mobile-menu { display: flex; }
    #close-sidebar { display: flex; }
    .chat-header { 
        padding: 0 var(--spacing-md); 
        gap: var(--spacing-xs);
        display: flex;
        align-items: center;
    }
    .header-profile { 
        flex: 0 1 auto; 
        gap: var(--spacing-sm);
        order: 1;
    }
    .messages-toggle-btn {
        order: 2;
        margin-left: auto;
        display: flex;
    }
    .background-open-btn {
        order: 3;
        margin-left: 0;
        display: flex;
    }
    .header-profile .avatar {
        width: 32px;
        height: 32px;
    }
    .header-info h1 {
        font-size: var(--font-size-md);
    }
    .messages-container { padding: var(--spacing-sm) var(--spacing-md); }
    .message { max-width: 88%; }
    .chat-input { padding: var(--spacing-xs) var(--spacing-md); padding-bottom: calc(var(--spacing-xs) + max(env(safe-area-inset-bottom), 6px)); }
    .header-actions .btn-secondary span { display: none; }
    
    /* Mobile footer sizing adjustments */
    .input-footer {
        padding-top: 0.15rem;
        gap: 6px;
    }
    .usage-btn {
        padding: 1px 2px;
        font-size: 9px;
        letter-spacing: 0.02em;
    }
    .char-count {
        font-size: 9px;
    }
    .usage-dropdown {
        min-width: 140px;
        padding: 6px;
    }
    .usage-header {
        font-size: 9px;
        padding-bottom: 3px;
    }
    .usage-detail-row {
        font-size: 9px;
        gap: 4px;
    }
    .usage-track {
        height: 2px;
    }
    .upgrade-link {
        padding: 3px 6px;
        font-size: 10px;
    }
}
@media (min-width: 769px) { #close-sidebar { display: none; } }

/* ═══════════════════════════════════════════════════════════════════════
   MODEL IMAGE COLLAGE  –  ring indicator + modal gallery
   ═══════════════════════════════════════════════════════════════════════ */

/* ── Gradient indicator on avatar ─────────────────────────────────────── */
@keyframes avatarGradientRotate {
    0%   { background: linear-gradient(0deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.18), 0 0 14px 1px rgba(0, 119, 204, 0.08); }
    6.25% { background: linear-gradient(22.5deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.16), 0 0 14px 1px rgba(0, 119, 204, 0.10); }
    12.5% { background: linear-gradient(45deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.14), 0 0 14px 1px rgba(0, 119, 204, 0.12); }
    18.75% { background: linear-gradient(67.5deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.16), 0 0 14px 1px rgba(0, 119, 204, 0.10); }
    25%  { background: linear-gradient(90deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.18), 0 0 14px 1px rgba(0, 119, 204, 0.08); }
    31.25% { background: linear-gradient(112.5deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.20), 0 0 14px 1px rgba(0, 119, 204, 0.06); }
    37.5% { background: linear-gradient(135deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.18), 0 0 14px 1px rgba(0, 119, 204, 0.08); }
    43.75% { background: linear-gradient(157.5deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.16), 0 0 14px 1px rgba(0, 119, 204, 0.10); }
    50%  { background: linear-gradient(180deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.14), 0 0 14px 1px rgba(0, 119, 204, 0.12); }
    56.25% { background: linear-gradient(202.5deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.16), 0 0 14px 1px rgba(0, 119, 204, 0.10); }
    62.5% { background: linear-gradient(225deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.18), 0 0 14px 1px rgba(0, 119, 204, 0.08); }
    68.75% { background: linear-gradient(247.5deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.20), 0 0 14px 1px rgba(0, 119, 204, 0.06); }
    75%  { background: linear-gradient(270deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.18), 0 0 14px 1px rgba(0, 119, 204, 0.08); }
    81.25% { background: linear-gradient(292.5deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.16), 0 0 14px 1px rgba(0, 119, 204, 0.10); }
    87.5% { background: linear-gradient(315deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.14), 0 0 14px 1px rgba(0, 119, 204, 0.12); }
    93.75% { background: linear-gradient(337.5deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.16), 0 0 14px 1px rgba(0, 119, 204, 0.10); }
    100% { background: linear-gradient(360deg, var(--color-purple), var(--color-accent)); box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.18), 0 0 14px 1px rgba(0, 119, 204, 0.08); }
}

.avatar-has-collage {
    display: inline-flex;
    box-sizing: content-box;
    padding: 2px;
    border-radius: 50%;
    background: linear-gradient(0deg, var(--color-purple), var(--color-accent));
    cursor: pointer;
    box-shadow: 0 0 8px 0 rgba(115, 0, 255, 0.18), 0 0 14px 1px rgba(0, 119, 204, 0.08);
    animation: avatarGradientRotate 8s linear infinite;
    transition: transform var(--transition-normal, 250ms ease),
                filter var(--transition-normal, 250ms ease);
}

.avatar-has-collage:hover {
    transform: scale(1.06);
    filter: brightness(1.08);
}

/* ── Collage modal overlay ────────────────────────────────────────────── */
.collage-modal {
    position: fixed;
    inset: 0;
    z-index: 9000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
}

.collage-modal[hidden] {
    display: none !important;
}

.collage-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    cursor: pointer;
}

/* ── Modal card ───────────────────────────────────────────────────────── */
.collage-card {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 520px;
    background:transparent;
    border-radius: var(--radius-lg, 16px);
    border: 1px solid rgba(255, 255, 255, 0.10);
    box-shadow:
        0 28px 72px rgba(0, 0, 0, 0.50),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(36px);
    -webkit-backdrop-filter: blur(36px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    max-height: calc(100dvh - 32px);
}

/* Header strip */
.collage-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
}

.collage-header-info {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.collage-model-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-white, #fff);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 220px;
}

.collage-image-counter {
    font-size: 12px;
    color: var(--color-text-muted, #888);
}

.collage-close-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.07);
    color: var(--color-text-muted, #888);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 200ms, color 200ms;
    flex-shrink: 0;
}

.collage-close-btn:hover {
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
}

/* ── Image stage ──────────────────────────────────────────────────────── */
.collage-stage {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 5;
    background: transparent;
    overflow: hidden;
    flex-shrink: 0;
    isolation: isolate;
}

.collage-stage::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: min(48%, 240px);
    background: linear-gradient(
        180deg,
        rgba(13, 13, 20, 0) 0%,
        rgba(13, 13, 20, 0.18) 28%,
        rgba(13, 13, 20, 0.72) 100%
    );
    pointer-events: none;
    z-index: 2;
}

.collage-caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 0 12px 12px;
    z-index: 4;
    display: flex;
    justify-content: flex-start;
    align-items: flex-end;
    pointer-events: none;
}

.collage-caption-stack {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-width: min(78%, 360px);
    padding: 9px 11px;
    border-radius: 16px;
    background: rgba(8, 10, 14, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
}

.collage-caption-author {
    display: block;
    font-size: 11px;
    font-weight: 700;
    line-height: 1.1;
    color: rgba(255, 255, 255, 0.96);
    letter-spacing: 0.01em;
}

.collage-images-track {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 300ms cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
    position: relative;
    z-index: 1;
}

.collage-image-slide {
    flex: 0 0 100%;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.collage-image-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    user-select: none;
    -webkit-user-drag: none;
}

/* Nav arrows */
.collage-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: none;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(4px);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 180ms, opacity 180ms;
    z-index: 4;
    opacity: 0.7;
}

.collage-nav-btn:hover { opacity: 1; background: rgba(0, 0, 0, 0.78); }
.collage-nav-btn:disabled { opacity: 0.2; pointer-events: none; }
.collage-nav-prev { left: 10px; }
.collage-nav-next { right: 10px; }

/* Loading spinner */
.collage-spinner {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
    pointer-events: none;
}

.collage-spinner::after {
    content: '';
    width: 36px;
    height: 36px;
    border: 3px solid rgba(255, 255, 255, 0.12);
    border-top-color: #7300ff;
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
}

.collage-spinner.hidden { display: none; }

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

/* ── Bottom info bar ──────────────────────────────────────────────────── */
.collage-info-bar {
    padding: 10px 12px 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    flex-wrap: nowrap;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    min-height: 58px;
}

/* Swipeable preview rail */
.collage-preview-strip {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 0;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x proximity;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.collage-preview-strip::-webkit-scrollbar {
    display: none;
}

.collage-preview-btn {
    position: relative;
    flex: 0 0 40px;
    width: 40px;
    height: 50px;
    padding: 0;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.05);
    overflow: hidden;
    cursor: pointer;
    transition: transform 180ms, border-color 180ms, box-shadow 180ms, background 180ms, opacity 180ms;
    scroll-snap-align: center;
}

.collage-preview-btn:hover {
    transform: translateY(-1px);
}

.collage-preview-btn:focus-visible {
    outline: 2px solid rgba(115, 0, 255, 0.8);
    outline-offset: 2px;
}

.collage-preview-btn.active {
    border: 1px solid transparent;
    background:
        linear-gradient(rgba(115, 0, 255, 0.14), rgba(0, 119, 204, 0.14)) padding-box,
        linear-gradient(135deg, #7300ff, #0077cc) border-box;
    box-shadow: 0 0 0 1px rgba(115, 0, 255, 0.16), 0 10px 24px rgba(0, 0, 0, 0.20);
}

.collage-preview-frame {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.collage-preview-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    user-select: none;
    -webkit-user-drag: none;
    transition: filter 180ms, opacity 180ms, transform 180ms;
}

.collage-preview-btn:not(.active) .collage-preview-img {
    filter: blur(0.9px) saturate(0.82) brightness(0.92);
    opacity: 0.72;
    transform: scale(1.08);
}

.collage-preview-btn.active .collage-preview-img {
    filter: none;
    opacity: 1;
    transform: none;
}

.collage-preview-btn::after {
    content: '';
    position: absolute;
    right: 3px;
    bottom: 3px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: linear-gradient(135deg, #7300ff, #0077cc);
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.34),
        0 0 8px rgba(115, 0, 255, 0.28);
    opacity: 0;
    transform: scale(0.85);
    pointer-events: none;
    transition: opacity 180ms, transform 180ms, box-shadow 180ms;
}

.collage-preview-btn.active::after {
    opacity: 1;
    transform: scale(1);
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.34),
        0 0 10px rgba(115, 0, 255, 0.38);
}

/* Like button */
.collage-like-btn {
    display: flex;
    align-items: center;
    gap: 0;
    border: none;
    background: none;
    color: var(--color-text-muted, #888);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 20px;
    transition: color 200ms, background 200ms;
    flex-shrink: 0;
}

.collage-like-btn:hover { background: rgba(255, 0, 80, 0.1); color: #ff4060; }
.collage-like-btn[aria-pressed="true"] .collage-heart-icon { fill: #ff4060; stroke: #ff4060; color: #ff4060; }
.collage-like-btn[aria-pressed="true"] { color: #ff4060; }

.collage-heart-icon { transition: fill 200ms, stroke 200ms; }

.collage-like-count {
    display: none;
}

/* Description */
.collage-description {
    display: -webkit-box;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    font-size: 12px;
    line-height: 1.35;
    color: rgba(255, 255, 255, 0.92);
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
    white-space: normal;
}

/* ── Responsive: narrow screens ───────────────────────────────────────── */
@media (max-width: 540px) {
    .collage-card {
        max-width: 100%;
        border-radius: 16px;
        align-self: center;
        margin-top: 0;
        max-height: calc(100dvh - 24px);
    }

    .collage-modal {
        align-items: center;
        justify-content: center;
        padding: 12px;
    }

    .collage-caption {
        padding: 0 10px 10px;
    }

    .collage-info-bar {
        min-height: 0;
        padding: 8px 10px 10px;
    }

    .collage-preview-strip {
        flex: 1 1 auto;
        gap: 6px;
    }

    .collage-preview-btn {
        flex: 0 0 32px;
        width: 32px;
        height: 40px;
        border-radius: 6px;
    }

    .collage-preview-btn::after {
        right: 2px;
        bottom: 2px;
        width: 4px;
        height: 4px;
        box-shadow:
            0 0 0 1px rgba(0, 0, 0, 0.32),
            0 0 7px rgba(115, 0, 255, 0.24);
    }

    .collage-preview-btn:not(.active) .collage-preview-img {
        filter: blur(0.8px) saturate(0.8) brightness(0.9);
        opacity: 0.68;
    }

    .collage-like-btn {
        margin-left: auto;
    }

    .collage-caption-stack {
        max-width: 92%;
        padding: 8px 10px;
        border-radius: 14px;
    }

    .collage-description {
        font-size: 11px;
    }
}