:root {
    color-scheme: light;
    --app-bg: #f8fafc;
    --app-bg-2: #eef2ff;
    --surface: rgba(255, 255, 255, 0.78);
    --surface-strong: rgba(255, 255, 255, 0.9);
    --surface-soft: rgba(255, 255, 255, 0.65);
    --border: rgba(226, 232, 240, 0.92);
    --text-main: #0f172a;
    --text-muted: #64748b;
    --message-bg: rgba(255, 255, 255, 0.92);
    --active-glow-color: 96, 165, 250;
    --active-inset-shadow: rgba(255, 255, 255, 0.14);
}

html[data-theme="dark"] {
    color-scheme: dark;
    --app-bg: #07101d;
    --app-bg-2: #0a1627;
    --surface: #0a1322;
    --surface-strong: #0b1728;
    --surface-soft: #0d1627;
    --border: rgba(30, 41, 59, 0.78);
    --text-main: #e5eefc;
    --text-muted: #94a3b8;
    --message-bg: #0f1a2b;
    --active-glow-color: 45, 212, 191;
    --active-inset-shadow: rgba(255, 255, 255, 0.04);
}

html, body {
    height: 100%;
}

body {
    overflow: hidden;
    overscroll-behavior: none;
}

/* Scrollbars for Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: rgba(71, 85, 105, 0.48) transparent;
}

/* Custom scrollbar for webkit */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.08);
}
::-webkit-scrollbar-thumb {
    background: rgba(71, 85, 105, 0.48);
    border-radius: 9999px;
    border: 2px solid transparent;
    background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(51, 65, 85, 0.72);
    background-clip: padding-box;
}

/* Media Carousel - Hide Scrollbar */
.media-carousel {
    scrollbar-width: none; /* Firefox */
}
.media-carousel::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

.app-shell {
    background: var(--app-bg);
    background-image:
        radial-gradient(circle at top left, color-mix(in srgb, var(--app-bg) 94%, white 6%), color-mix(in srgb, var(--app-bg) 76%, white 24%) 28%, color-mix(in srgb, var(--app-bg-2) 70%, var(--app-bg) 30%) 58%, color-mix(in srgb, var(--app-bg-2) 45%, var(--app-bg) 55%) 100%),
        linear-gradient(135deg, var(--app-bg) 0%, var(--app-bg-2) 55%, color-mix(in srgb, var(--app-bg) 84%, var(--app-bg-2) 16%) 100%);
}

.glass-panel {
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    background: var(--surface);
    color: var(--text-main);
}

.chat-surface {
    background-color: var(--app-bg);
    background-image:
        radial-gradient(circle at 20% 20%, color-mix(in srgb, var(--text-muted) 10%, transparent), transparent 22%),
        radial-gradient(circle at 80% 10%, rgba(59, 130, 246, 0.07), transparent 24%),
        linear-gradient(to bottom, var(--surface-soft), color-mix(in srgb, var(--app-bg) 82%, white 18%));
}

.app-drawer {
    transition: transform 220ms ease, opacity 220ms ease;
}

.app-drawer[data-open="false"] {
    transform: translateX(-102%);
    opacity: 0;
    pointer-events: none;
}

.app-drawer[data-open="true"] {
    transform: translateX(0);
    opacity: 1;
}

@media (min-width: 1024px) {
    .app-drawer {
        transform: none !important;
        opacity: 1 !important;
        pointer-events: auto !important;
    }
}

@media (max-width: 480px) {
    .mobile-compact-pad {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    .mobile-compact-y {
        padding-top: 0.75rem;
        padding-bottom: 0.75rem;
    }
}

.message-bubble {
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
    background: var(--message-bg);
}

.chat-item-active {
    background: var(--app-bg-2);
    background-image: linear-gradient(135deg, color-mix(in srgb, var(--app-bg) 82%, white 18%), color-mix(in srgb, var(--app-bg-2) 60%, white 40%));
    border-color: rgba(var(--active-glow-color), 0.35);
    box-shadow: inset 0 1px 0 var(--active-inset-shadow);
    animation: active-glow 260ms ease-out forwards;
}

.message-entry {
    animation: message-fade-up 180ms ease-out;
}

.unread-badge {
    animation: badge-pop 180ms ease-out;
}

@keyframes message-fade-up {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

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

@keyframes badge-pop {
    from {
        transform: scale(0.82);
        opacity: 0.4;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes active-glow {
    from {
        box-shadow: inset 0 1px 0 var(--active-inset-shadow), 0 0 0 0 rgba(var(--active-glow-color), 0.14);
    }

    to {
        box-shadow: inset 0 1px 0 var(--active-inset-shadow), 0 0 0 8px rgba(var(--active-glow-color), 0);
    }
}

html[data-theme="dark"] * {
    scrollbar-color: rgba(148, 163, 184, 0.5) transparent;
}

html[data-theme="dark"] ::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.45);
}

html[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.5);
}

html[data-theme="dark"] .app-shell {
    background:
        linear-gradient(135deg, #07101d 0%, #081320 48%, #0b1728 100%);
}

html[data-theme="dark"] .chat-surface {
    background-image: none;
    background-color: #0b1728;
}

html[data-theme="dark"] .glass-panel {
    background: #0b1728;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

html[data-theme="dark"] .message-bubble {
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.16);
}

html[data-theme="dark"] #messages-container {
    opacity: 1 !important;
}

html[data-theme="dark"] .text-slate-900,
html[data-theme="dark"] .text-slate-800 {
    color: var(--text-main) !important;
}

html[data-theme="dark"] .text-slate-700,
html[data-theme="dark"] .text-slate-600,
html[data-theme="dark"] .text-slate-500,
html[data-theme="dark"] .text-slate-400 {
    color: var(--text-muted) !important;
}

html[data-theme="dark"] .border-slate-200,
html[data-theme="dark"] .border-slate-200\/70,
html[data-theme="dark"] .border-slate-200\/80,
html[data-theme="dark"] .border-white\/70,
html[data-theme="dark"] .border-white\/80 {
    border-color: var(--border) !important;
}

html[data-theme="dark"] .bg-white,
html[data-theme="dark"] .bg-white\/65,
html[data-theme="dark"] .bg-white\/75 {
    background-color: #0b1728 !important;
}

html[data-theme="dark"] .bg-white\/80,
html[data-theme="dark"] .bg-white\/85,
html[data-theme="dark"] .bg-white\/90,
html[data-theme="dark"] .bg-white\/92 {
    background-color: #0b1728 !important;
    border-color: rgba(30, 41, 59, 0.78) !important;
}

html[data-theme="dark"] .bg-slate-50,
html[data-theme="dark"] .bg-slate-50\/95 {
    background-color: #0f1a2b !important;
}

html[data-theme="dark"] #messages-container > div {
    opacity: 1 !important;
}

html[data-theme="dark"] .shadow-sm,
html[data-theme="dark"] .shadow-md,
html[data-theme="dark"] .shadow-lg {
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1) !important;
}

html[data-theme="dark"] .shadow-\[0_20px_80px_rgba\(15\,23\,42\,0\.18\)\] {
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.14) !important;
}

html[data-theme="dark"] .shadow-\[0_10px_30px_rgba\(15\,23\,42\,0\.06\)\],
html[data-theme="dark"] .shadow-\[0_-8px_24px_rgba\(15\,23\,42\,0\.05\)\] {
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.08) !important;
}

html[data-theme="dark"] .bg-sky-50,
html[data-theme="dark"] .bg-emerald-50 {
    background-color: #0f1a2b !important;
}

html[data-theme="dark"] .text-sky-700,
html[data-theme="dark"] .text-emerald-700 {
    color: #67e8f9 !important;
}

html[data-theme="dark"] .border-sky-100,
html[data-theme="dark"] .border-sky-200 {
    border-color: rgba(34, 211, 238, 0.18) !important;
}

html[data-theme="dark"] .shadow-sky-500\/20,
html[data-theme="dark"] .shadow-sky-500\/10 {
    box-shadow: none !important;
}

html[data-theme="dark"] .text-sky-600 {
    color: #67e8f9 !important;
}

html[data-theme="dark"] .bg-gradient-to-br {
    background-image: linear-gradient(135deg, #1f4b99, #0f7492) !important;
}

html[data-theme="dark"] #sidebar-overlay {
    background: rgba(2, 6, 23, 0.65);
}

/* Date Separator */
.date-separator {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0.75rem 0;
    user-select: none;
}

.date-separator::before,
.date-separator::after {
    content: '';
    flex: 1;
    height: 1px;
    background: rgba(148, 163, 184, 0.2);
}

.date-separator span {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
    background: var(--surface-soft);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    border: 1px solid var(--border);
    white-space: nowrap;
}

/* Scroll to Bottom Button */
#scroll-to-bottom {
    animation: scroll-btn-fade 200ms ease-out;
}

#scroll-to-bottom:hover {
    transform: translateY(-2px);
}

@keyframes scroll-btn-fade {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Connection Status States */
#connection-status[data-state="connecting"] {
    border-color: rgba(251, 191, 36, 0.3) !important;
    background-color: rgba(254, 243, 199, 0.8) !important;
    color: #92400e !important;
}

#connection-status[data-state="connecting"] .connection-status-dot {
    background-color: #f59e0b !important;
    animation: status-pulse 1.5s ease-in-out infinite;
}

#connection-status[data-state="connected"] {
    border-color: rgba(16, 185, 129, 0.3) !important;
    background-color: rgba(209, 250, 229, 0.8) !important;
    color: #065f46 !important;
}

#connection-status[data-state="connected"] .connection-status-dot {
    background-color: #10b981 !important;
}

#connection-status[data-state="disconnected"] {
    border-color: rgba(239, 68, 68, 0.3) !important;
    background-color: rgba(254, 226, 226, 0.8) !important;
    color: #991b1b !important;
    cursor: pointer;
}

#connection-status[data-state="disconnected"] .connection-status-dot {
    background-color: #ef4444 !important;
}

@keyframes status-pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.4;
        transform: scale(0.8);
    }
}

/* Dark mode overrides for new elements */
html[data-theme="dark"] .date-separator::before,
html[data-theme="dark"] .date-separator::after {
    background: rgba(71, 85, 105, 0.3);
}

html[data-theme="dark"] .date-separator span {
    background: #0f1a2b;
    border-color: rgba(30, 41, 59, 0.78);
}

html[data-theme="dark"] #scroll-to-bottom {
    background: #0f1a2b;
    border-color: rgba(30, 41, 59, 0.78);
    color: #94a3b8;
}

html[data-theme="dark"] #loading-indicator > div {
    background: #0f1a2b;
    border-color: rgba(30, 41, 59, 0.78);
    color: #94a3b8;
}

html[data-theme="dark"] #loading-indicator svg {
    color: #475569;
}

html[data-theme="dark"] #connection-status[data-state="connecting"] {
    border-color: rgba(245, 158, 11, 0.2) !important;
    background-color: rgba(245, 158, 11, 0.1) !important;
    color: #fbbf24 !important;
}

html[data-theme="dark"] #connection-status[data-state="connected"] {
    border-color: rgba(16, 185, 129, 0.2) !important;
    background-color: rgba(16, 185, 129, 0.1) !important;
    color: #34d399 !important;
}

html[data-theme="dark"] #connection-status[data-state="disconnected"] {
    border-color: rgba(239, 68, 68, 0.2) !important;
    background-color: rgba(239, 68, 68, 0.1) !important;
    color: #f87171 !important;
}