:root {
    --sidebar-width: 380px;

    /* Dark theme (default/fallback) */
    --bg: #0b0d12;
    --bg-glow: radial-gradient(circle at 15% 0%, #2a1d4d44, transparent 55%),
        radial-gradient(circle at 85% 100%, #0d3b4d44, transparent 55%);
    --panel: #15171ecc;
    --card: #1b1e26;
    --card-hover: #21252f;
    --border: #2a2f3a;
    --text: #eef0f4;
    --text-dim: #9aa0ac;
    --shadow: 0 8px 24px -8px #00000080;

    /* Accent colors stay constant across themes by design */
    --accent: #7c5cff;
    --accent-2: #36c5f0;
    --accent-3: #2d70af9a;
    --accent-green: #2ecc71;
    --accent-green-2: #1abc9c;
    --accent-red: #e74c3c;
    --accent-red-2: #c0392b;
    --gradient: linear-gradient(135deg, var(--accent), var(--accent-2));
    --gradient-play: linear-gradient(135deg, var(--accent-green), var(--accent-green-2));
    --gradient-stop: linear-gradient(135deg, var(--accent-red), var(--accent-red-2));
    --radius: 14px;
    --radius-sm: 8px;
}

/* Follow the OS-level preference automatically, unless the user has made an
   explicit choice via the toggle (tracked with data-theme, set by player.js). */
@media (prefers-color-scheme: light) {
    :root:not([data-theme]) {
        --bg: #f3f4f8;
        --bg-glow: radial-gradient(circle at 15% 0%, #7c5cff14, transparent 55%),
            radial-gradient(circle at 85% 100%, #36c5f014, transparent 55%);
        --panel: #ffffffcc;
        --card: #ffffff;
        --card-hover: #f0f1f6;
        --border: #dfe2ea;
        --text: #161922;
        --text-dim: #5b6170;
        --shadow: 0 8px 24px -8px #00000026;
    }
}

:root[data-theme='light'] {
    --bg: #f3f4f8;
    --bg-glow: radial-gradient(circle at 15% 0%, #7c5cff14, transparent 55%),
        radial-gradient(circle at 85% 100%, #36c5f014, transparent 55%);
    --panel: #ffffffcc;
    --card: #ffffff;
    --card-hover: #f0f1f6;
    --border: #dfe2ea;
    --text: #161922;
    --text-dim: #5b6170;
    --shadow: 0 8px 24px -8px #00000026;
}

:root[data-theme='dark'] {
    --bg: #0b0d12;
    --bg-glow: radial-gradient(circle at 15% 0%, #2a1d4d44, transparent 55%),
        radial-gradient(circle at 85% 100%, #0d3b4d44, transparent 55%);
    --panel: #15171ecc;
    --card: #1b1e26;
    --card-hover: #21252f;
    --border: #2a2f3a;
    --text: #eef0f4;
    --text-dim: #9aa0ac;
    --shadow: 0 8px 24px -8px #00000080;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background: var(--bg-glow), var(--bg);
    color: var(--text);
    /* 🎨 PROFESSIONAL PAIRING: Core UI layers mapped to Inter */
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    letter-spacing: -0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--accent-2);
}

button, input, select {
    font-family: inherit;
    letter-spacing: inherit;
    cursor: pointer;
}

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

.layout {
    display: flex;
    min-height: 100vh;
}

/* ---------- Sidebar (desktop) ---------- */
.sidebar {
    width: var(--sidebar-width);
    flex: 0 0 var(--sidebar-width);
    background: var(--panel);
    backdrop-filter: blur(16px);
    border-right: 1px solid var(--border);
    padding: 1.75rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.brand {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    text-decoration: none;
    min-width: 0;
}

.brand-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text-dim);
    transition: border-color 0.15s, color 0.15s, transform 0.15s;
}

.theme-toggle:hover {
    border-color: var(--accent);
    color: var(--text);
}

.theme-toggle:active {
    transform: scale(0.92);
}

.theme-toggle .icon {
    width: 18px;
    height: 18px;
}

.sidebar h1 {
    /* 🎨 PROFESSIONAL PAIRING: Headings mapped to Plus Jakarta Sans */
    font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
    font-size: 1.15rem;
    font-weight: 800;
    margin: 0;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.02em;
}

.now-playing {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    min-height: 80px;
    padding: 0.75rem 1rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.now-playing::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient);
    opacity: 0;
    transition: opacity 0.3s;
}

body.is-playing .now-playing::before {
    opacity: 0.06;
}

.now-playing-art {
    position: relative;
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    border-radius: calc(var(--radius) - 6px);
    background: linear-gradient(135deg, hsl(260 70% 55%), hsl(200 70% 50%));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.now-playing-art-initial {
    /* 🎨 PROFESSIONAL PAIRING: Single letter art markers look modern using clean geometry */
    font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
    font-size: 1.4rem;
    font-weight: 800;
    color: #fff;
}

.now-playing-art-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.now-playing-art-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #00000066;
    color: #fff;
    font-size: 0.6rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: -0.01em;
    text-align: center;
    line-height: 1.1;
    padding: 2px;
}

.now-playing-art .equalizer {
    position: absolute;
    bottom: 6px;
    right: 6px;
}

.now-playing-info {
    min-width: 0;
    flex: 1;
    padding-right: 0.5rem;
}

.now-playing .station-name {
    /* 🎨 PROFESSIONAL PAIRING: Active player headings use clean display weights */
    font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.now-playing .track-ticker {
    color: var(--text-dim);
    font-size: 0.8rem;
    font-weight: 400;
    min-height: 1.2em;
    margin-top: 0.2rem;
    white-space: normal;
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    transition: color 0.2s ease, opacity 0.2s ease;
}

.equalizer {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 14px;
    flex-shrink: 0;
}

.equalizer span {
    width: 3px;
    height: 30%;
    background: var(--gradient);
    border-radius: 2px;
    opacity: 0.35;
    transition: opacity 0.2s;
}

body.is-playing .equalizer span {
    opacity: 1;
    animation: equalize 0.9s ease-in-out infinite;
}

body.is-playing .equalizer span:nth-child(1) {
    animation-delay: -0.6s;
}

body.is-playing .equalizer span:nth-child(2) {
    animation-delay: -0.3s;
}

.now-playing-art .equalizer span {
    background: #fff;
    width: 2px;
}

@keyframes equalize {
    0%,
    100% {
        height: 25%;
    }
    50% {
        height: 100%;
    }
}

.controls {
    display: flex;
    gap: 0.6rem;
}

.transport-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 46px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text);
    font-weight: 500;
    transition: transform 0.15s, border-color 0.15s, background 0.15s;
}

.transport-btn:hover {
    border-color: var(--accent);
    background: var(--card-hover);
}

.transport-btn:active {
    transform: scale(0.94);
}

.transport-btn--primary {
    background: var(--gradient-play);
    border: none;
    color: #fff;
    font-weight: 600;
    box-shadow: 0 4px 16px -4px #2ecc7180;
}

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

.transport-btn--primary[aria-pressed='true'] {
    background: var(--gradient-stop);
    box-shadow: 0 4px 16px -4px #e74c3c80;
}

.transport-btn[aria-pressed='true']:not(.transport-btn--primary) {
    border-color: var(--accent-2);
    color: var(--accent-2);
}

.volume-row {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.icon-volume-label {
    width: 18px;
    height: 18px;
    color: var(--text-dim);
    flex-shrink: 0;
}

.volume-slider {
    flex: 1;
    appearance: none;
    height: 4px;
    border-radius: 999px;
    background: var(--border);
    outline: none;
}

.volume-slider::-webkit-slider-thumb {
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--gradient);
    cursor: pointer;
    border: none;
}

.volume-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--gradient);
    cursor: pointer;
    border: none;
}

.sleep-timer {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.9rem 1rem;
}

.sleep-timer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.6rem;
}

.sleep-timer-header .label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-dim);
}

.sleep-timer-header .timer-display {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-2);
}

.sleep-timer-controls {
    display: flex;
    gap: 0.5rem;
}

.sleep-timer-controls select {
    flex: 1;
    min-width: 0;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: 0.85rem;
    font-weight: 500;
}

.sleep-btn {
    padding: 0.5rem 0.8rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--card-hover);
    color: var(--text);
    font-size: 0.85rem;
    font-weight: 600;
    transition: border-color 0.15s, opacity 0.15s;
}

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

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

.sleep-btn--cancel {
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.player-toast {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent-red);
    background: hsl(6 70% 50% / 0.12);
    border: 1px solid hsl(6 70% 50% / 0.3);
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.8rem;
}

.icon {
    width: 20px;
    height: 20px;
}

.icon--hidden {
    display: none;
}

.sidebar-section-label {
    /* 🎨 PROFESSIONAL PAIRING: Labels use high letter tracking with tighter, uniform uppercase shapes */
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-top: -0.5rem;
}

.recently-played-section[hidden] {
    display: none;
}

.recently-played-section {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.recently-played {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.recent-chip {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-dim);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.3rem 0.7rem;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.recent-chip:hover {
    border-color: var(--accent);
    color: var(--text);
}

.categories {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.categories .category-btn {
    text-align: left;
    padding: 0.55rem 0.8rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-dim);
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.categories .category-btn:hover {
    background: var(--card);
    color: var(--text);
}

.categories .category-btn.active {
    background: var(--card);
    border-color: var(--accent);
    color: var(--text);
    font-weight: 600;
    box-shadow: 0 0 0 1px #7c5cff33;
}

/* ---------- Dashboard ---------- */
.dashboard {
    flex: 1;
    padding: 2rem;
}

.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.dashboard-header h2 {
    /* 🎨 PROFESSIONAL PAIRING: Main dashboard section header values */
    font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
    margin: 0;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.back-link {
    display: inline-block;
    color: var(--text-dim);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.back-link:hover {
    color: var(--text);
}

.station-detail {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
    align-items: start;
}

.station-detail .station-card {
    cursor: pointer;
}

.station-detail-body {
    color: var(--text-dim);
    line-height: 1.7;
}

.station-detail-body :first-child {
    margin-top: 0;
}

@media (max-width: 699px) {
    .station-detail {
        grid-template-columns: 1fr;
    }
}

.search-box {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.5rem 0.9rem;
    width: 280px;
    transition: border-color 0.15s;
}

.search-box:focus-within {
    border-color: var(--accent);
}

.search-box .icon {
    width: 16px;
    height: 16px;
    color: var(--text-dim);
    flex-shrink: 0;
}

.search-box input {
    flex: 1;
    min-width: 0;
    border: none;
    outline: none;
    background: transparent;
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
    font-weight: 400;
}

.no-results {
    color: var(--text-dim);
    text-align: center;
    margin-top: 3rem;
}

#stations-grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.1rem;
}

.station-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.1rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    text-align: left;
    color: var(--text);
    transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease,
        background 0.18s ease;
}

.station-card:hover {
    border-color: var(--accent);
    background: var(--card-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.station-card:hover .play-overlay {
    opacity: 1;
}

.station-card:focus-visible {
    outline: 2px solid var(--accent-2);
    outline-offset: 2px;
}

.station-card.unavailable {
    opacity: 0.45;
    pointer-events: none;
}

.station-card.playing {
    border-color: var(--accent-2);
    box-shadow: 0 0 0 1px var(--accent-2), 0 0 24px -6px #36c5f066;
}

.station-card.playing .live-badge {
    display: flex;
}

.station-art {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: calc(var(--radius) - 6px);
    overflow: hidden;
    background: linear-gradient(135deg, hsl(var(--art-hue) 65% 45%), hsl(calc(var(--art-hue) + 50) 65% 35%));
    display: flex;
    align-items: center;
    justify-content: center;
}

.station-art img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.station-art-initial {
    font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
    font-size: 2rem;
    font-weight: 800;
    color: #ffffffcc;
}

.live-badge {
    display: none;
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    align-items: center;
    gap: 0.3rem;
    background: #000000aa;
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 0.2rem 0.5rem 0.2rem 0.4rem;
    border-radius: 999px;
}

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

@keyframes pulse-dot {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: 0.35;
    }
}

.play-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #00000066;
    opacity: 0;
    transition: opacity 0.18s;
}

.play-overlay svg {
    width: 42px;
    height: 42px;
    color: #fff;
    filter: drop-shadow(0 2px 6px #00000080);
}

.favorite-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: none;
    background: #000000aa;
    color: #ffffffaa;
    transition: color 0.15s, transform 0.15s;
}

.favorite-btn:hover {
    transform: scale(1.1);
}

.favorite-btn svg {
    width: 15px;
    height: 15px;
}

.favorite-btn[aria-pressed='true'] {
    color: #ffd24c;
}

.station-card-body {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.5rem;
}

.station-card .title {
    font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin: 0;
}

.info-link {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent-2);
    white-space: nowrap;
    flex-shrink: 0;
}

.info-link:hover {
    text-decoration: underline;
}

.station-card .description {
    color: var(--text-dim);
    font-size: 0.85rem;
    font-weight: 400;
    line-height: 1.5;
    margin: 0;
}

.station-card .category-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.station-card .category-tag {
    font-size: 0.7rem;
    font-weight: 600;
    color: hsl(var(--tag-hue) 80% 75%);
    background: hsl(var(--tag-hue) 70% 50% / 0.15);
    border: 1px solid hsl(var(--tag-hue) 70% 50% / 0.3);
    border-radius: 999px;
    padding: 0.15rem 0.6rem;
}

.station-card .location-tag {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-dim);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.15rem 0.6rem;
}

.station-overlay-badge {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: none;
    padding: 0;
    min-height: auto;
    border: none;
    color: #ffffff;
    font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
    font-size: 4rem; /* Crisp, readable display size */
    font-weight: 800; /* Max display thickness */
    text-transform: uppercase;
    letter-spacing: -0.01em;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.95)) 
            drop-shadow(0 2px 4px rgba(0, 0, 0, 0.8));
    
    /* Layout Layering */
    z-index: 20; 
    white-space: nowrap; 
    pointer-events: none;
}

/* ---------- Mobile Layout Rules ---------- */
.sidebar-toggle {
    display: none;
}

@media (max-width: 899px) {
    .layout {
        flex-direction: column;
    }

    .sidebar {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        top: auto;
        width: 100%;
        flex: none;
        height: auto;
        max-height: 75vh;
        border-right: none;
        border-top: 2px solid var(--accent-3);
        border-radius: var(--radius) var(--radius) 0 0;
        z-index: 50;
        padding: 0.4rem 1rem calc(1rem + env(safe-area-inset-bottom));
        gap: 0.6rem;
    }

    /* 📱 FIXED: .volume-row is no longer hidden by default in this block */
    .sleep-timer,
    .sidebar-section-label,
    .categories {
        display: none;
    }

    /* 📱 FIXED: Keep volume input accessible under main controls with slight padding adjustments */
    .volume-row {
        display: flex;
        padding: 0.2rem 0.4rem;
        width: 100%;
    }

    .sidebar.is-expanded .sleep-timer,
    .sidebar.is-expanded .sidebar-section-label,
    .sidebar.is-expanded .categories {
        display: flex;
    }

    .sidebar.is-expanded .sidebar-section-label {
        display: block;
    }

    .sidebar-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 100%;
        padding: 0.1rem 0;
        background: transparent;
        border: none;
        color: var(--text-dim);
        order: -1;
    }

    .sidebar-toggle svg {
        width: 26px;
        height: 26px;
        transition: transform 0.2s;
        transform: rotate(180deg);
    }

    .sidebar.is-expanded .sidebar-toggle svg {
        transform: rotate(0deg);
    }

    .dashboard {
        margin-left: 0;
        padding-bottom: 12rem; /* Expanded slightly to ensure cards don't hide behind volume bar */
    }

    .dashboard-header {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box {
        width: 100%;
    }

    #stations-grid-container {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

	.station-overlay-badge {
        font-size: 3rem;
    }
}

@media (min-width: 900px) {
    .sidebar {
        position: sticky;
        top: 0;
        height: 100vh;
        overflow-y: auto;
    }
}