/*
 * Miles Tunes — design system & application shell
 * Built on top of Bootstrap 5.3 (dark color mode).
 */

/* ==========================================================================
   1. Design tokens
   ========================================================================== */

:root,
[data-bs-theme="dark"] {
    /* Surfaces */
    --mt-bg: #0e0e10;
    --mt-surface: #17171a;
    --mt-surface-2: #1f1f23;
    --mt-surface-3: #2a2a2f;
    --mt-surface-hover: #26262b;
    --mt-border: rgba(255, 255, 255, 0.08);
    --mt-border-strong: rgba(255, 255, 255, 0.16);

    /* Text */
    --mt-text: #f4f4f5;
    --mt-text-muted: #a1a1aa;
    --mt-text-subtle: #91919a; /* >= 4.5:1 on every surface, incl. surface-3 */

    /* Brand */
    --mt-accent: #f5a524;
    --mt-accent-hover: #ffb84d;
    --mt-accent-active: #d98b0b;
    --mt-accent-rgb: 245, 165, 36;
    --mt-accent-contrast: #141414;

    /* Feedback */
    --mt-success: #22c55e;
    --mt-danger: #ef4444;
    --mt-warning: #eab308;
    --mt-info: #38bdf8;

    /* Shape */
    --mt-radius-sm: 4px;
    --mt-radius: 8px;
    --mt-radius-lg: 12px;
    --mt-radius-xl: 16px;
    --mt-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);

    /* Layout */
    --mt-sidebar-w: 248px;
    --mt-header-h: 64px;
    --mt-player-h: 88px;
    --mt-mini-player-h: 60px;
    --mt-bottomnav-h: 62px;
    --mt-gap: 8px;

    /* Motion */
    --mt-transition: 160ms ease;

    /* Bootstrap mapping */
    --bs-body-bg: var(--mt-bg);
    --bs-body-color: var(--mt-text);
    --bs-body-font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --bs-secondary-color: var(--mt-text-muted);
    --bs-tertiary-color: var(--mt-text-subtle);
    --bs-secondary-bg: var(--mt-surface-2);
    --bs-tertiary-bg: var(--mt-surface);
    --bs-border-color: var(--mt-border);
    --bs-emphasis-color: #fff;
    --bs-primary: var(--mt-accent);
    --bs-primary-rgb: var(--mt-accent-rgb);
    --bs-link-color: var(--mt-text);
    --bs-link-color-rgb: 244, 244, 245;
    --bs-link-hover-color: var(--mt-accent);
    --bs-link-hover-color-rgb: var(--mt-accent-rgb);
    --bs-focus-ring-color: rgba(var(--mt-accent-rgb), 0.45);
    --bs-border-radius: var(--mt-radius);
    --bs-border-radius-lg: var(--mt-radius-lg);
}

/* ==========================================================================
   2. Base
   ========================================================================== */

html,
body {
    height: 100%;
}

body {
    background: var(--mt-bg);
    color: var(--mt-text);
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
}

/* `hidden` must win over Bootstrap display utilities (.d-grid, .d-flex use !important) */
[hidden][hidden] {
    display: none !important;
}

a {
    text-decoration: none;
}

a:hover {
    color: var(--mt-accent);
}

::selection {
    background: rgba(var(--mt-accent-rgb), 0.35);
}

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

.skip-link {
    position: absolute;
    top: -100px;
    left: 8px;
    z-index: 2000;
    padding: 8px 16px;
    border-radius: var(--mt-radius);
    background: var(--mt-accent);
    color: var(--mt-accent-contrast);
    font-weight: 600;
}

.skip-link:focus {
    top: 8px;
    color: var(--mt-accent-contrast);
}

.text-muted-mt {
    color: var(--mt-text-muted) !important;
}

.text-subtle {
    color: var(--mt-text-subtle) !important;
}

.text-accent {
    color: var(--mt-accent) !important;
}

.min-w-0 {
    min-width: 0;
}

.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Thin, dark scrollbars */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--mt-surface-3) transparent;
}

/* ==========================================================================
   3. Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
    font-weight: 700;
    letter-spacing: -0.01em;
    color: #fff;
}

.display-title {
    font-size: clamp(2rem, 6vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.05;
}

.eyebrow {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--mt-text-muted);
}

/* ==========================================================================
   4. Buttons
   ========================================================================== */

.btn {
    --bs-btn-font-weight: 600;
    --bs-btn-border-radius: 999px;
    --bs-btn-padding-x: 1.25rem;
    transition: transform var(--mt-transition), background-color var(--mt-transition),
        color var(--mt-transition), border-color var(--mt-transition);
}

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

/* One consistent, always-visible keyboard focus style for every button variant */
.btn:focus-visible,
.btn-check:focus-visible + .btn,
.page-link:focus-visible,
.chip:focus-visible {
    outline: 2px solid var(--mt-accent);
    outline-offset: 2px;
    box-shadow: none;
}

.btn-primary {
    --bs-btn-color: var(--mt-accent-contrast);
    --bs-btn-bg: var(--mt-accent);
    --bs-btn-border-color: var(--mt-accent);
    --bs-btn-hover-color: var(--mt-accent-contrast);
    --bs-btn-hover-bg: var(--mt-accent-hover);
    --bs-btn-hover-border-color: var(--mt-accent-hover);
    --bs-btn-active-color: var(--mt-accent-contrast);
    --bs-btn-active-bg: var(--mt-accent-active);
    --bs-btn-active-border-color: var(--mt-accent-active);
    --bs-btn-disabled-color: var(--mt-accent-contrast);
    --bs-btn-disabled-bg: var(--mt-accent);
    --bs-btn-disabled-border-color: var(--mt-accent);
    --bs-btn-focus-shadow-rgb: var(--mt-accent-rgb);
}

.btn-light {
    --bs-btn-color: #111;
    --bs-btn-bg: #fff;
    --bs-btn-border-color: #fff;
    --bs-btn-hover-bg: #e4e4e7;
    --bs-btn-hover-border-color: #e4e4e7;
    --bs-btn-active-bg: #d4d4d8;
}

.btn-outline-light {
    --bs-btn-color: var(--mt-text);
    --bs-btn-border-color: var(--mt-border-strong);
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: transparent;
    --bs-btn-hover-border-color: #fff;
    --bs-btn-active-bg: rgba(255, 255, 255, 0.06);
    --bs-btn-active-border-color: #fff;
}

.btn-ghost {
    --bs-btn-color: var(--mt-text-muted);
    --bs-btn-bg: transparent;
    --bs-btn-border-color: transparent;
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: rgba(255, 255, 255, 0.06);
    --bs-btn-hover-border-color: transparent;
    --bs-btn-active-color: #fff;
    --bs-btn-active-bg: rgba(255, 255, 255, 0.1);
    --bs-btn-active-border-color: transparent;
    --bs-btn-disabled-color: var(--mt-text-subtle);
    --bs-btn-disabled-bg: transparent;
    --bs-btn-disabled-border-color: transparent;
}

/* Icon-only round button */
.btn-icon {
    --bs-btn-padding-x: 0;
    --bs-btn-padding-y: 0;
    width: 36px;
    height: 36px;
    display: inline-grid;
    place-items: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.btn-icon.btn-sm {
    width: 30px;
    height: 30px;
    font-size: 0.95rem;
}

.btn-icon.btn-lg {
    width: 48px;
    height: 48px;
    font-size: 1.4rem;
}

.btn-icon.is-active {
    color: var(--mt-accent);
}

/* Big circular play button */
.btn-play {
    --bs-btn-padding-x: 0;
    --bs-btn-padding-y: 0;
    width: 56px;
    height: 56px;
    display: inline-grid;
    place-items: center;
    font-size: 1.6rem;
    box-shadow: var(--mt-shadow);
}

.btn-play .bi-play-fill {
    margin-left: 3px;
}

.btn-play.btn-sm {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
}

/* ==========================================================================
   5. Forms
   ========================================================================== */

.form-label {
    font-weight: 600;
    font-size: 0.875rem;
}

.form-control,
.form-select {
    background-color: var(--mt-surface-2);
    border-color: var(--mt-border-strong);
    color: var(--mt-text);
    border-radius: var(--mt-radius);
    padding: 0.65rem 0.9rem;
}

.form-select {
    padding-right: 2.25rem;
}

.form-select-sm {
    padding: 0.35rem 2rem 0.35rem 0.75rem;
}

.form-select[multiple] {
    padding: 0.4rem;
}

.form-select[multiple] option {
    padding: 6px 10px;
    border-radius: var(--mt-radius-sm);
    color: var(--mt-text);
}

/* Gradient trick so Chromium paints the custom selected background */
.form-select[multiple] option:checked {
    background: var(--mt-accent) linear-gradient(0deg, var(--mt-accent), var(--mt-accent));
    color: var(--mt-accent-contrast);
}

.form-control:focus,
.form-select:focus {
    background-color: var(--mt-surface-2);
    border-color: var(--mt-accent);
    color: var(--mt-text);
    box-shadow: 0 0 0 0.2rem rgba(var(--mt-accent-rgb), 0.25);
}

.form-control::placeholder {
    color: var(--mt-text-subtle);
}

.form-check-input {
    background-color: var(--mt-surface-2);
    border-color: var(--mt-border-strong);
}

.form-check-input:checked {
    background-color: var(--mt-accent);
    border-color: var(--mt-accent);
}

.form-check-input:focus {
    border-color: var(--mt-accent);
    box-shadow: 0 0 0 0.2rem rgba(var(--mt-accent-rgb), 0.25);
}

.form-text {
    color: var(--mt-text-subtle);
}

.invalid-feedback {
    color: #f87171;
}

/* Search field with icon */
.search-field {
    position: relative;
}

.search-field .bi {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--mt-text-muted);
    pointer-events: none;
}

.search-field .form-control {
    padding-left: 2.6rem;
    border-radius: 999px;
    background-color: var(--mt-surface-2);
    border-color: transparent;
}

.search-field .form-control:hover {
    background-color: var(--mt-surface-3);
}

/* Range slider (progress & volume) */
.mt-range {
    --fill: 0%;
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 999px;
    background: linear-gradient(to right, #fff var(--fill), var(--mt-surface-3) var(--fill));
    cursor: pointer;
    outline-offset: 6px;
}

.mt-range:hover {
    background: linear-gradient(to right, var(--mt-accent) var(--fill), var(--mt-surface-3) var(--fill));
}

.mt-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #fff;
    border: 0;
    opacity: 0;
    transition: opacity var(--mt-transition);
}

.mt-range::-moz-range-thumb {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #fff;
    border: 0;
    opacity: 0;
    transition: opacity var(--mt-transition);
}

.mt-range:hover::-webkit-slider-thumb,
.mt-range:focus-visible::-webkit-slider-thumb {
    opacity: 1;
}

.mt-range:hover::-moz-range-thumb,
.mt-range:focus-visible::-moz-range-thumb {
    opacity: 1;
}

/* ==========================================================================
   6. Media placeholders (cover, avatar, thumbnail)
   ========================================================================== */

.cover {
    --hue: 30;
    position: relative;
    display: grid;
    place-items: center;
    width: 100%;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: var(--mt-radius);
    background: linear-gradient(135deg, hsl(var(--hue) 70% 48%), hsl(calc(var(--hue) + 45) 55% 18%));
    color: rgba(255, 255, 255, 0.85);
    font-size: 2rem;
    flex-shrink: 0;
}

.cover > img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cover--round {
    border-radius: 50%;
}

.cover--wide {
    aspect-ratio: 16 / 9;
}

.cover--xs { width: 40px; font-size: 1rem; border-radius: var(--mt-radius-sm); }
.cover--sm { width: 56px; font-size: 1.25rem; border-radius: var(--mt-radius-sm); }
.cover--md { width: 160px; }
.cover--lg { width: clamp(140px, 22vw, 232px); font-size: 3.5rem; box-shadow: var(--mt-shadow); }

.cover-duration {
    position: absolute;
    right: 8px;
    bottom: 8px;
    padding: 2px 6px;
    border-radius: var(--mt-radius-sm);
    background: rgba(0, 0, 0, 0.75);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: inline-grid;
    place-items: center;
    background: var(--mt-surface-3);
    color: #fff;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}

/* ==========================================================================
   7. Cards
   ========================================================================== */

.media-card {
    position: relative;
    display: block;
    padding: 12px;
    border-radius: var(--mt-radius-lg);
    background: transparent;
    color: var(--mt-text);
    transition: background-color var(--mt-transition);
}

.media-card:hover,
.media-card:focus-within {
    background: var(--mt-surface-hover);
    color: var(--mt-text);
}

.media-card__media {
    position: relative;
    margin-bottom: 12px;
}

.media-card__title {
    display: block;
    font-weight: 600;
    font-size: 0.95rem;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.media-card__title::after {
    /* Whole card is clickable through the title link */
    content: "";
    position: absolute;
    inset: 0;
}

.media-card__meta {
    font-size: 0.85rem;
    color: var(--mt-text-muted);
    margin-top: 2px;
}

.media-card__play {
    position: absolute;
    right: 8px;
    bottom: 8px;
    z-index: 2;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity var(--mt-transition), transform var(--mt-transition);
}

.media-card:hover .media-card__play,
.media-card:focus-within .media-card__play,
.media-card__play:focus-visible {
    opacity: 1;
    transform: translateY(0);
}

.media-card--artist {
    text-align: center;
}

/* Touch devices: always show the play button */
@media (hover: none) {
    .media-card__play {
        opacity: 1;
        transform: none;
    }
}

/* Generic surface panel */
.panel {
    background: var(--mt-surface);
    border: 1px solid var(--mt-border);
    border-radius: var(--mt-radius-lg);
    padding: 20px;
}

/* Bootstrap card dark override */
.card {
    --bs-card-bg: var(--mt-surface);
    --bs-card-border-color: var(--mt-border);
    --bs-card-cap-bg: var(--mt-surface-2);
    --bs-card-border-radius: var(--mt-radius-lg);
}

/* ==========================================================================
   8. Sections & grids
   ========================================================================== */

.content-section {
    margin-bottom: 40px;
}

.section-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 8px;
}

.section-header h2 {
    font-size: 1.5rem;
    margin: 0;
}

.section-header__link {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--mt-text-muted);
    white-space: nowrap;
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
    gap: 4px;
    margin: 0 -12px;
}

.media-grid--wide {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

/* Single-row horizontal scroller on small screens */
@media (max-width: 575.98px) {
    .media-grid--scroll {
        grid-auto-flow: column;
        grid-template-columns: none;
        grid-auto-columns: 42%;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        padding-bottom: 4px;
    }

    .media-grid--scroll.media-grid--wide {
        grid-auto-columns: 78%;
    }

    .media-grid--scroll > * {
        scroll-snap-align: start;
    }
}

/* ==========================================================================
   9. Hero
   ========================================================================== */

.hero {
    --hue: 30;
    position: relative;
    overflow: hidden;
    border-radius: var(--mt-radius-xl);
    padding: clamp(24px, 5vw, 48px);
    margin-bottom: 40px;
    background:
        radial-gradient(120% 140% at 100% 0%, hsl(var(--hue) 80% 50% / 0.55), transparent 60%),
        radial-gradient(80% 120% at 0% 100%, hsl(calc(var(--hue) + 200) 60% 40% / 0.35), transparent 60%),
        var(--mt-surface);
}

.hero__lead {
    max-width: 560px;
    color: var(--mt-text-muted);
    font-size: 1.05rem;
}

/* Page header for detail pages (album, artist, playlist) */
.page-hero {
    --hue: 30;
    display: flex;
    align-items: flex-end;
    gap: 24px;
    padding: 32px 0 24px;
    margin: -24px -24px 24px;
    padding-left: 24px;
    padding-right: 24px;
    background: linear-gradient(180deg, hsl(var(--hue) 55% 32%), transparent);
}

.page-hero__body {
    min-width: 0;
}

.page-hero__type {
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.page-hero__title {
    font-size: clamp(2rem, 6vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.05;
    margin-bottom: 12px;
    word-break: break-word;
}

.page-hero__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px 0;
    font-size: 0.9rem;
    color: var(--mt-text-muted);
}

.page-hero__meta > * + *::before {
    content: "•";
    margin: 0 8px;
    color: var(--mt-text-subtle);
}

.page-hero__meta a {
    color: #fff;
    font-weight: 700;
}

.page-hero__meta a:hover {
    text-decoration: underline;
}

.page-hero--plain {
    background: none;
    padding-top: 8px;
}

@media (max-width: 575.98px) {
    .page-hero {
        flex-direction: column;
        align-items: flex-start;
        margin: -16px -16px 16px;
        padding: 24px 16px 16px;
    }
}

/* Row of primary actions under a page hero */
.action-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
}

.action-bar .btn-icon {
    font-size: 1.5rem;
    width: 44px;
    height: 44px;
}

/* ==========================================================================
   10. Track list
   ========================================================================== */

.track-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.track-row {
    display: grid;
    grid-template-columns: 32px minmax(0, 4fr) minmax(0, 2fr) 40px 56px;
    align-items: center;
    gap: 16px;
    padding: 8px 12px;
    border-radius: var(--mt-radius);
    color: var(--mt-text-muted);
    font-size: 0.9rem;
}

.track-row:hover,
.track-row:focus-within {
    background: var(--mt-surface-hover);
}

.track-row--header {
    border-bottom: 1px solid var(--mt-border);
    border-radius: 0;
    margin-bottom: 8px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.track-row--header:hover {
    background: transparent;
}

.track-row__index {
    position: relative;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

.track-row__index .btn-icon {
    position: absolute;
    inset: 50% auto auto 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    color: #fff;
}

.track-row:hover .track-row__index > span,
.track-row:focus-within .track-row__index > span {
    opacity: 0;
}

.track-row:hover .track-row__index .btn-icon,
.track-row:focus-within .track-row__index .btn-icon {
    opacity: 1;
}

.track-row__main {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.track-row__title {
    color: #fff;
    font-weight: 500;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-row__artist {
    display: block;
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-row__duration {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.track-row.is-playing .track-row__title,
.track-row.is-playing .track-row__index {
    color: var(--mt-accent);
}

/* Album/playlist variant without an album column */
.track-row--compact {
    grid-template-columns: 32px minmax(0, 1fr) 40px 56px;
}

@media (max-width: 767.98px) {
    .track-row {
        grid-template-columns: minmax(0, 1fr) 40px;
        gap: 8px;
        padding: 8px;
    }

    .track-row__index,
    .track-row__album,
    .track-row__duration,
    .track-row--header {
        display: none;
    }
}

/* ==========================================================================
   11. Chips, badges, misc
   ========================================================================== */

.chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 999px;
    border: 0;
    background: var(--mt-surface-2);
    color: var(--mt-text);
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    transition: background-color var(--mt-transition);
}

.chip:hover {
    background: var(--mt-surface-3);
    color: #fff;
}

.chip.is-active {
    background: #fff;
    color: #111;
}

.badge-soft {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    border-radius: var(--mt-radius-sm);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    background: var(--mt-surface-3);
    color: var(--mt-text-muted);
}

.badge-soft--accent { background: rgba(var(--mt-accent-rgb), 0.15); color: var(--mt-accent); }
.badge-soft--success { background: rgba(34, 197, 94, 0.15); color: #4ade80; }
.badge-soft--danger { background: rgba(239, 68, 68, 0.15); color: #f87171; }
.badge-soft--warning { background: rgba(234, 179, 8, 0.15); color: #facc15; }

/* Genre tiles */
.genre-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.genre-tile {
    --hue: 30;
    position: relative;
    display: block;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    padding: 16px;
    border-radius: var(--mt-radius-lg);
    background: hsl(var(--hue) 60% 38%);
    color: #fff;
    font-size: 1.25rem; /* 20px bold = WCAG "large text" (3:1) on the lighter hues */
    font-weight: 800;
    transition: transform var(--mt-transition);
}

.genre-tile:hover {
    color: #fff;
    transform: scale(1.02);
}

.genre-tile .bi {
    position: absolute;
    right: -8px;
    bottom: -12px;
    font-size: 4.5rem;
    opacity: 0.35;
    transform: rotate(18deg);
}

/* Centered play icon on thumbnails */
.play-overlay {
    position: absolute;
    inset: 50% auto auto 50%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: rgba(0, 0, 0, 0.55);
    border: 2px solid rgba(255, 255, 255, 0.85);
    color: #fff;
    font-size: 1.8rem;
    transition: background-color var(--mt-transition), transform var(--mt-transition);
}

.play-overlay .bi-play-fill {
    margin-left: 4px;
}

.media-card .play-overlay {
    width: 52px;
    height: 52px;
    font-size: 1.5rem;
    opacity: 0;
}

.media-card:hover .play-overlay,
.media-card:focus-within .play-overlay {
    opacity: 1;
}

/* Hide the placeholder icon while the play overlay is visible */
.media-card__media:has(.play-overlay) .cover > .bi {
    transition: opacity var(--mt-transition);
}

.media-card:hover .media-card__media:has(.play-overlay) .cover > .bi,
.media-card:focus-within .media-card__media:has(.play-overlay) .cover > .bi {
    opacity: 0;
}

/* BTS featured hero */
.bts-hero {
    --hue: 340;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
    align-items: center;
    gap: 32px;
    padding: clamp(20px, 4vw, 40px);
    margin-bottom: 32px;
    border-radius: var(--mt-radius-xl);
    background:
        radial-gradient(100% 140% at 100% 0%, hsl(var(--hue) 70% 45% / 0.45), transparent 60%),
        var(--mt-surface-2);
}

.bts-hero__title {
    font-size: clamp(1.6rem, 3.5vw, 2.75rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.bts-hero__media {
    position: relative;
    display: block;
    border-radius: var(--mt-radius-lg);
    overflow: hidden;
    box-shadow: var(--mt-shadow);
}

.bts-hero__media .cover {
    font-size: 4rem;
    border-radius: 0;
}

.bts-hero__media:hover .play-overlay {
    background: var(--mt-accent);
    border-color: var(--mt-accent);
    color: var(--mt-accent-contrast);
}

@media (max-width: 991.98px) {
    .bts-hero {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .bts-hero__media {
        order: -1;
    }
}

/* Video frame on BTS detail */
.video-frame {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: var(--mt-radius-lg);
    background: #000;
}

.video-frame > video,
.video-frame > .cover {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border-radius: 0;
    font-size: 5rem;
}

.video-locked {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 24px;
    text-align: center;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.45), rgba(0, 0, 0, 0.85));
}

.video-locked__icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: rgba(255, 255, 255, 0.12);
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.video-locked p {
    max-width: 380px;
    color: rgba(255, 255, 255, 0.75);
    margin: 0 0 8px;
}

@media (max-width: 575.98px) {
    .video-frame {
        border-radius: 0;
        margin: -16px -16px 0;
    }

    .video-locked p {
        display: none;
    }
}

/* Related song card with CTA */
.feature-song {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border-radius: var(--mt-radius-lg);
    background: var(--mt-surface-2);
}

.feature-song__info {
    flex: 1;
    min-width: 0;
}

@media (max-width: 575.98px) {
    .feature-song {
        flex-wrap: wrap;
    }

    .feature-song .btn {
        width: 100%;
    }
}

/* Compact video list ("Up next") */
.video-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.video-list-item {
    position: relative;
    display: grid;
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 12px;
    padding: 8px;
    border-radius: var(--mt-radius);
    color: var(--mt-text);
}

.video-list-item:hover {
    background: var(--mt-surface-hover);
    color: var(--mt-text);
}

.video-list-item .cover {
    font-size: 1.5rem;
}

.video-list-item__title {
    font-weight: 600;
    font-size: 0.9rem;
    color: #fff;
    margin-bottom: 4px;
}

.video-list-item__meta {
    font-size: 0.8rem;
    color: var(--mt-text-muted);
}

/* Small inline artist chip */
.artist-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 4px 14px 4px 4px;
    border-radius: 999px;
    background: var(--mt-surface-2);
    color: var(--mt-text);
    font-weight: 600;
    font-size: 0.9rem;
}

.artist-chip:hover {
    background: var(--mt-surface-3);
    color: #fff;
}

.artist-chip .cover {
    width: 32px;
    font-size: 0.9rem;
}

/* Member home: quick access tiles */
.quick-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 8px;
    margin-bottom: 40px;
}

.quick-tile {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    padding-right: 12px;
    overflow: hidden;
    border-radius: var(--mt-radius);
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    font-weight: 700;
    font-size: 0.9rem;
    transition: background-color var(--mt-transition);
}

.quick-tile:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

.quick-tile .cover {
    width: 56px;
    border-radius: 0;
    font-size: 1.25rem;
}

.quick-tile__name {
    flex: 1;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

@media (max-width: 575.98px) {
    .quick-grid {
        grid-template-columns: 1fr 1fr;
    }

    .quick-tile .cover {
        width: 48px;
    }

    .quick-tile {
        font-size: 0.8rem;
    }
}

/* Special covers for Liked Songs / Liked Videos */
.cover--liked {
    background: linear-gradient(135deg, #f5a524, #b4235a 70%);
    color: #fff;
}

.cover--liked-videos {
    background: linear-gradient(135deg, #38bdf8, #6d28d9 70%);
    color: #fff;
}

/* "Create playlist" dashed card */
.create-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    aspect-ratio: 1 / 1;
    border: 2px dashed var(--mt-border-strong);
    border-radius: var(--mt-radius);
    background: transparent;
    color: var(--mt-text-muted);
    font-weight: 600;
    transition: border-color var(--mt-transition), color var(--mt-transition);
}

.create-card .bi {
    font-size: 2rem;
}

.create-card:hover {
    border-color: var(--mt-accent);
    color: var(--mt-accent);
}

/* Track rows with an extra actions column (playlist owner, add songs) */
.track-row--actions {
    grid-template-columns: 32px minmax(0, 4fr) minmax(0, 2fr) 40px 56px 40px;
}

.track-row__action {
    opacity: 0;
}

.track-row:hover .track-row__action,
.track-row:focus-within .track-row__action,
.track-row__action[aria-expanded="true"] {
    opacity: 1;
}

@media (hover: none) {
    .track-row__action {
        opacity: 1;
    }
}

/* Search result row with an "Add" button (add songs to playlist) */
.track-row--add {
    grid-template-columns: minmax(0, 3fr) minmax(0, 2fr) 96px;
}

.track-row--add > .btn {
    --bs-btn-padding-x: 0.9rem;
    justify-self: end;
    white-space: nowrap;
}

@media (max-width: 767.98px) {
    .track-row--actions {
        grid-template-columns: minmax(0, 1fr) 40px 40px;
    }

    .track-row--add {
        grid-template-columns: minmax(0, 1fr) 96px;
    }
}

/* History grouped by day */
.history-day {
    margin: 24px 0 8px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--mt-text-muted);
}

.history-day:first-of-type {
    margin-top: 0;
}

/* Large avatar for profile */
.avatar--xl {
    width: clamp(120px, 20vw, 200px);
    height: clamp(120px, 20vw, 200px);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    box-shadow: var(--mt-shadow);
}

.avatar-upload {
    display: flex;
    align-items: center;
    gap: 16px;
}

.avatar-upload .avatar {
    width: 72px;
    height: 72px;
    font-size: 1.5rem;
}

/* Settings sections */
.settings-section {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
    gap: 24px;
    padding: 24px 0;
    border-bottom: 1px solid var(--mt-border);
}

.settings-section:last-child {
    border-bottom: 0;
}

.settings-section__title {
    font-size: 1.05rem;
    margin-bottom: 4px;
}

.settings-section__desc {
    font-size: 0.875rem;
    color: var(--mt-text-muted);
    margin: 0;
}

@media (max-width: 767.98px) {
    .settings-section {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}

/* Search: top result */
.top-result {
    position: relative;
    display: block;
    padding: 20px;
    border-radius: var(--mt-radius-lg);
    background: var(--mt-surface-2);
    color: var(--mt-text);
    transition: background-color var(--mt-transition);
}

.top-result:hover {
    background: var(--mt-surface-3);
    color: var(--mt-text);
}

.top-result .cover {
    width: 96px;
    margin-bottom: 20px;
    box-shadow: var(--mt-shadow);
}

.top-result .btn-play {
    position: absolute;
    right: 20px;
    bottom: 20px;
}

/* Definition list for credits / release info */
.info-list {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 8px 24px;
    margin: 0;
    font-size: 0.9rem;
}

.info-list dt {
    font-weight: 500;
    color: var(--mt-text-muted);
}

.info-list dd {
    margin: 0;
}

/* Pagination */
.pagination {
    --bs-pagination-bg: var(--mt-surface-2);
    --bs-pagination-color: var(--mt-text);
    --bs-pagination-border-color: transparent;
    --bs-pagination-hover-bg: var(--mt-surface-3);
    --bs-pagination-hover-color: #fff;
    --bs-pagination-hover-border-color: transparent;
    --bs-pagination-focus-bg: var(--mt-surface-3);
    --bs-pagination-focus-color: #fff;
    --bs-pagination-focus-box-shadow: 0 0 0 0.2rem rgba(var(--mt-accent-rgb), 0.35);
    --bs-pagination-active-bg: var(--mt-accent);
    --bs-pagination-active-color: var(--mt-accent-contrast);
    --bs-pagination-active-border-color: var(--mt-accent);
    --bs-pagination-disabled-bg: var(--mt-surface);
    --bs-pagination-disabled-color: var(--mt-text-subtle);
    --bs-pagination-disabled-border-color: transparent;
    gap: 4px;
}

.pagination .page-link {
    border-radius: var(--mt-radius) !important;
    min-width: 38px;
    text-align: center;
}

/* Page title row for listing pages */
.page-title {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
}

.page-title h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin: 0;
}

.lock-overlay {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    background: rgba(0, 0, 0, 0.45);
    color: #fff;
}

/* Alerts */
.alert {
    --bs-alert-border-radius: var(--mt-radius);
    border-width: 0;
    border-left: 3px solid;
}

.alert-danger { --bs-alert-bg: rgba(239, 68, 68, 0.12); --bs-alert-color: #fca5a5; --bs-alert-border-color: var(--mt-danger); }
.alert-success { --bs-alert-bg: rgba(34, 197, 94, 0.12); --bs-alert-color: #86efac; --bs-alert-border-color: var(--mt-success); }
.alert-warning { --bs-alert-bg: rgba(234, 179, 8, 0.12); --bs-alert-color: #fde047; --bs-alert-border-color: var(--mt-warning); }
.alert-info { --bs-alert-bg: rgba(56, 189, 248, 0.12); --bs-alert-color: #7dd3fc; --bs-alert-border-color: var(--mt-info); }

/* Empty / error states */
.state-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 8px;
    padding: 48px 24px;
    border-radius: var(--mt-radius-lg);
    background: var(--mt-surface);
}

.state-block__icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--mt-surface-2);
    font-size: 1.75rem;
    color: var(--mt-text-muted);
    margin-bottom: 8px;
}

.state-block p {
    max-width: 380px;
    color: var(--mt-text-muted);
    margin: 0 0 8px;
}

/* Skeleton loading */
.skeleton {
    position: relative;
    overflow: hidden;
    background: var(--mt-surface-2);
    border-radius: var(--mt-radius);
}

.skeleton::after {
    content: "";
    position: absolute;
    inset: 0;
    transform: translateX(-100%);
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    animation: mt-shimmer 1.4s infinite;
}

.skeleton--text {
    height: 12px;
    border-radius: 999px;
}

@keyframes mt-shimmer {
    100% {
        transform: translateX(100%);
    }
}

/* Dropdown & modal dark tuning */
.dropdown-menu {
    --bs-dropdown-bg: var(--mt-surface-3);
    --bs-dropdown-border-color: var(--mt-border);
    --bs-dropdown-link-hover-bg: rgba(255, 255, 255, 0.08);
    --bs-dropdown-link-active-bg: var(--mt-accent);
    --bs-dropdown-link-active-color: var(--mt-accent-contrast);
    --bs-dropdown-border-radius: var(--mt-radius);
    box-shadow: var(--mt-shadow);
    padding: 4px;
}

.dropdown-item {
    border-radius: var(--mt-radius-sm);
    padding: 8px 12px;
}

.modal {
    --bs-modal-bg: var(--mt-surface-2);
    --bs-modal-border-color: var(--mt-border);
    --bs-modal-border-radius: var(--mt-radius-xl);
}

/* ==========================================================================
   12. Application shell
   ========================================================================== */

.app-shell {
    display: grid;
    grid-template-columns: var(--mt-sidebar-w) minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr) var(--mt-player-h);
    grid-template-areas:
        "sidebar main"
        "player player";
    gap: var(--mt-gap);
    height: 100vh;
    height: 100dvh;
    padding: var(--mt-gap);
}

/* ---- Sidebar ---- */
.app-sidebar {
    grid-area: sidebar;
    display: flex;
    flex-direction: column;
    gap: var(--mt-gap);
    min-height: 0;
}

.sidebar-block {
    background: var(--mt-surface);
    border-radius: var(--mt-radius-lg);
    padding: 12px;
}

.sidebar-block--grow {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 8px 14px;
    color: #fff;
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
}

.brand:hover {
    color: #fff;
}

.brand__mark {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--mt-accent);
    color: var(--mt-accent-contrast);
    font-size: 1.1rem;
}

.brand__accent {
    color: var(--mt-accent);
}

.side-nav {
    list-style: none;
    margin: 0;
    padding: 0;
}

.side-nav__link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 9px 10px;
    border-radius: var(--mt-radius);
    color: var(--mt-text-muted);
    font-weight: 600;
    font-size: 0.95rem;
    transition: color var(--mt-transition), background-color var(--mt-transition);
}

.side-nav__link .bi {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

.side-nav__link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.04);
}

.side-nav__link.is-active {
    color: #fff;
    background: rgba(255, 255, 255, 0.07);
}

.side-nav__link.is-active .bi {
    color: var(--mt-accent);
}

.sidebar-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 10px 10px;
    color: var(--mt-text-muted);
    font-weight: 700;
    font-size: 0.9rem;
}

.sidebar-scroll {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    margin: 0 -4px;
    padding: 0 4px;
}

.sidebar-playlist {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 8px;
    border-radius: var(--mt-radius);
    color: var(--mt-text);
}

.sidebar-playlist:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
}

.sidebar-playlist__name {
    display: block;
    font-weight: 500;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-playlist__meta {
    display: block;
    font-size: 0.78rem;
    color: var(--mt-text-muted);
}

.sidebar-cta {
    padding: 16px;
    border-radius: var(--mt-radius);
    background: var(--mt-surface-2);
}

.sidebar-cta p {
    font-size: 0.85rem;
    color: var(--mt-text-muted);
}

/* ---- Main column ---- */
.app-main {
    grid-area: main;
    position: relative;
    min-height: 0;
    overflow-y: auto;
    border-radius: var(--mt-radius-lg);
    background: var(--mt-surface);
}

.app-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 12px;
    height: var(--mt-header-h);
    padding: 0 24px;
    background: rgba(23, 23, 26, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.app-header__search {
    flex: 1;
    max-width: 420px;
}

.app-header__actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
}

.app-content {
    padding: 24px;
}

.app-footer {
    padding: 32px 24px 40px;
    border-top: 1px solid var(--mt-border);
    color: var(--mt-text-subtle);
    font-size: 0.85rem;
}

.app-footer a {
    color: var(--mt-text-muted);
}

.app-footer a:hover {
    color: #fff;
}

/* ---- Player ---- */
.app-player {
    grid-area: player;
    display: grid;
    grid-template-columns: minmax(180px, 1fr) minmax(0, 2fr) minmax(180px, 1fr);
    align-items: center;
    gap: 16px;
    padding: 0 8px;
}

.player-track {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.player-track__info {
    min-width: 0;
}

.player-track__title {
    display: block;
    color: #fff;
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.player-track__artist {
    display: block;
    color: var(--mt-text-muted);
    font-size: 0.8rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.player-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    max-width: 720px;
    width: 100%;
    justify-self: center;
}

.player-controls__buttons {
    display: flex;
    align-items: center;
    gap: 8px;
}

.player-toggle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 0;
    display: grid;
    place-items: center;
    background: #fff;
    color: #111;
    font-size: 1.35rem;
    transition: transform var(--mt-transition);
}

.player-toggle:hover {
    transform: scale(1.06);
}

.player-progress {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    font-size: 0.75rem;
    color: var(--mt-text-muted);
    font-variant-numeric: tabular-nums;
}

.player-progress time {
    min-width: 36px;
    text-align: center;
}

.player-extras {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 4px;
}

.player-volume {
    width: 110px;
}

.player-mobile-progress {
    display: none;
}

/* Disabled / empty player state */
.app-player.is-empty .player-controls,
.app-player.is-empty .player-extras {
    opacity: 0.4;
    pointer-events: none;
}

.player-track__title[aria-disabled="true"],
.player-track__artist[aria-disabled="true"] {
    pointer-events: none;
}

/* Loading spinner inside the play/pause toggle */
.player-toggle,
.full-player__toggle {
    position: relative;
}

.player-toggle.is-loading .bi,
.full-player__toggle.is-loading .bi {
    opacity: 0;
}

.player-toggle.is-loading::after,
.full-player__toggle.is-loading::after {
    content: "";
    position: absolute;
    inset: 25%;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: mt-spin 0.7s linear infinite;
}

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

/* ---- Full-screen player (mobile) ---- */
.full-player {
    --hue: 30;
    position: fixed;
    inset: 0;
    z-index: 1050;
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: calc(12px + env(safe-area-inset-top)) 24px calc(24px + env(safe-area-inset-bottom));
    overflow-y: auto;
    background: linear-gradient(180deg, hsl(var(--hue) 45% 26%), var(--mt-bg) 75%);
    animation: mt-slide-up 220ms ease;
}

@keyframes mt-slide-up {
    from {
        transform: translateY(24px);
        opacity: 0;
    }
}

.full-player__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--mt-text-muted);
}

.full-player__cover {
    width: min(100%, 420px);
    margin: auto;
    font-size: 5rem;
    border-radius: var(--mt-radius-lg);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
}

.full-player__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.full-player__title {
    display: block;
    font-size: 1.4rem;
    font-weight: 800;
    color: #fff;
}

.full-player__artist {
    display: block;
    color: var(--mt-text-muted);
}

.full-player__controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.full-player__toggle {
    width: 64px;
    height: 64px;
    border: 0;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: #fff;
    color: #111;
    font-size: 2rem;
}

.full-player .player-progress {
    flex-wrap: wrap;
    justify-content: space-between;
}

.full-player .player-progress .mt-range {
    order: -1;
    flex-basis: 100%;
}

body.has-full-player {
    overflow: hidden;
}

/* ---- Queue panel ---- */
.queue-heading {
    margin: 16px 0 8px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--mt-text-muted);
}

.queue-heading:first-child {
    margin-top: 0;
}

.queue-item {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 6px 8px;
    border: 0;
    border-radius: var(--mt-radius);
    background: transparent;
    color: var(--mt-text);
    text-align: left;
}

.queue-item:hover {
    background: var(--mt-surface-hover);
}

.queue-item.is-current .queue-item__title {
    color: var(--mt-accent);
}

.queue-item__title {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.queue-item__artist {
    display: block;
    font-size: 0.8rem;
    color: var(--mt-text-muted);
}

/* ---- Toasts ---- */
.toast-stack {
    position: fixed;
    left: 50%;
    bottom: calc(var(--mt-player-h) + 24px);
    z-index: 1090;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transform: translateX(-50%);
    pointer-events: none;
}

.mt-toast {
    display: flex;
    align-items: center;
    gap: 10px;
    max-width: min(420px, calc(100vw - 32px));
    padding: 10px 16px;
    border-radius: var(--mt-radius);
    background: #fff;
    color: #111;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: var(--mt-shadow);
    animation: mt-toast-in 180ms ease;
}

.mt-toast--danger {
    background: #fecaca;
}

@keyframes mt-toast-in {
    from {
        transform: translateY(8px);
        opacity: 0;
    }
}

/* Video error overlay */
.video-error {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 24px;
    text-align: center;
    background: rgba(0, 0, 0, 0.82);
}

.video-error p {
    max-width: 380px;
    margin: 0;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.75);
}

/* ---- Bottom navigation (mobile) ---- */
.app-bottomnav {
    display: none;
}

/* ==========================================================================
   13. Responsive shell
   ========================================================================== */

@media (max-width: 1199.98px) {
    .app-player {
        grid-template-columns: minmax(160px, 1fr) minmax(0, 2fr) auto;
    }

    .player-volume {
        width: 80px;
    }
}

@media (max-width: 991.98px) {
    .app-shell {
        display: block;
        height: auto;
        min-height: 100dvh;
        padding: 0;
    }

    .app-sidebar {
        display: none;
    }

    .app-main {
        overflow: visible;
        border-radius: 0;
        background: var(--mt-bg);
        padding-bottom: calc(var(--mt-bottomnav-h) + var(--mt-mini-player-h) + 16px + env(safe-area-inset-bottom));
    }

    .app-header {
        padding: 0 16px;
        background: rgba(14, 14, 16, 0.9);
    }

    .app-content {
        padding: 16px;
    }

    .app-footer {
        padding: 24px 16px;
    }

    /* Mini player docked above the bottom nav */
    .app-player {
        position: fixed;
        left: 8px;
        right: 8px;
        bottom: calc(var(--mt-bottomnav-h) + 6px + env(safe-area-inset-bottom));
        z-index: 1030;
        height: var(--mt-mini-player-h);
        display: flex;
        gap: 8px;
        padding: 0 8px;
        border-radius: var(--mt-radius);
        background: var(--mt-surface-3);
        box-shadow: var(--mt-shadow);
        overflow: hidden;
    }

    .player-track {
        flex: 1;
    }

    .player-track .cover {
        width: 44px;
    }

    .player-controls {
        width: auto;
        flex-direction: row;
    }

    .player-progress,
    .player-extras,
    .player-controls__buttons .player-optional {
        display: none;
    }

    .player-like-mobile {
        display: inline-grid !important;
    }

    /* The whole mini player opens the full player; its links are not tap targets */
    .app-player .player-track {
        cursor: pointer;
    }

    .app-player .player-track a {
        pointer-events: none;
    }

    .toast-stack {
        bottom: calc(var(--mt-bottomnav-h) + var(--mt-mini-player-h) + 20px + env(safe-area-inset-bottom));
    }

    .player-mobile-progress {
        display: block;
        position: absolute;
        left: 8px;
        right: 8px;
        bottom: 0;
        height: 2px;
        border-radius: 999px;
        background: rgba(255, 255, 255, 0.15);
        overflow: hidden;
    }

    .player-mobile-progress > span {
        display: block;
        height: 100%;
        background: #fff;
    }

    .app-bottomnav {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 1030;
        display: flex;
        height: calc(var(--mt-bottomnav-h) + env(safe-area-inset-bottom));
        padding-bottom: env(safe-area-inset-bottom);
        background: linear-gradient(180deg, rgba(14, 14, 16, 0.85), #0e0e10 40%);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
    }

    .bottomnav__link {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2px;
        min-height: 48px;
        color: var(--mt-text-muted);
        font-size: 0.7rem;
        font-weight: 600;
    }

    .bottomnav__link .bi {
        font-size: 1.35rem;
    }

    .bottomnav__link.is-active {
        color: #fff;
    }

    .bottomnav__link.is-active .bi {
        color: var(--mt-accent);
    }
}

@media (min-width: 992px) {
    .player-like-mobile {
        display: none !important;
    }

    .full-player {
        display: none !important;
    }
}

/* ==========================================================================
   14. Auth pages (login, register, password reset)
   ========================================================================== */

.auth-page {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 32px 16px;
    background:
        radial-gradient(80% 60% at 50% 0%, rgba(var(--mt-accent-rgb), 0.16), transparent 70%),
        var(--mt-bg);
}

.auth-card {
    width: 100%;
    max-width: 440px;
    padding: clamp(24px, 6vw, 40px);
    border-radius: var(--mt-radius-xl);
    background: var(--mt-surface);
    border: 1px solid var(--mt-border);
}

.auth-card .brand {
    justify-content: center;
    padding: 0 0 20px;
}

.auth-card__title {
    font-size: 1.6rem;
    text-align: center;
    margin-bottom: 4px;
}

.auth-card__subtitle {
    text-align: center;
    color: var(--mt-text-muted);
    margin-bottom: 24px;
}

.auth-card__footer {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--mt-border);
    text-align: center;
    color: var(--mt-text-muted);
    font-size: 0.9rem;
}

.auth-card__footer a,
.auth-link {
    color: #fff;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.auth-card__footer a:hover,
.auth-link:hover {
    color: var(--mt-accent);
}

.auth-legal {
    max-width: 440px;
    text-align: center;
    font-size: 0.8rem;
    color: var(--mt-text-subtle);
}

.auth-legal a {
    color: var(--mt-text-muted);
    text-decoration: underline;
}

/* Password field with show/hide toggle */
.password-field {
    position: relative;
}

.password-field .form-control {
    padding-right: 3rem;
}

.password-field__toggle {
    position: absolute;
    top: 50%;
    right: 6px;
    transform: translateY(-50%);
}

.password-field .form-control.is-invalid {
    background-image: none;
}

/* Password strength meter */
.strength-meter {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    margin-top: 8px;
}

.strength-meter span {
    height: 4px;
    border-radius: 999px;
    background: var(--mt-surface-3);
}

.strength-meter[data-level="1"] span:nth-child(-n + 1) { background: var(--mt-danger); }
.strength-meter[data-level="2"] span:nth-child(-n + 2) { background: var(--mt-warning); }
.strength-meter[data-level="3"] span:nth-child(-n + 3) { background: var(--mt-info); }
.strength-meter[data-level="4"] span:nth-child(-n + 4) { background: var(--mt-success); }

/* Long-form text (terms, privacy) */
.prose {
    max-width: 760px;
    color: var(--mt-text-muted);
    line-height: 1.75;
}

.prose h2 {
    font-size: 1.25rem;
    margin: 32px 0 12px;
}

.prose ul {
    padding-left: 1.25rem;
}

.prose li + li {
    margin-top: 4px;
}

.prose strong {
    color: var(--mt-text);
}

/* ==========================================================================
   15. Admin panel
   ========================================================================== */

.admin-shell {
    display: grid;
    grid-template-columns: 248px minmax(0, 1fr);
    min-height: 100vh;
    min-height: 100dvh;
}

.admin-sidebar {
    --bs-offcanvas-bg: var(--mt-surface);
    --bs-offcanvas-width: 272px;
    background: var(--mt-surface);
    border-right: 1px solid var(--mt-border);
    padding: 12px;
}

@media (min-width: 992px) {
    .admin-sidebar {
        position: sticky;
        top: 0;
        height: 100vh;
        height: 100dvh;
        overflow-y: auto;
    }
}

@media (max-width: 991.98px) {
    .admin-shell {
        grid-template-columns: minmax(0, 1fr);
    }
}

.admin-nav__heading {
    padding: 16px 10px 6px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--mt-text-subtle);
}

.admin-sidebar .side-nav__link {
    padding: 7px 10px;
    font-size: 0.9rem;
}

.admin-sidebar .side-nav__link .bi {
    font-size: 1.05rem;
}

.side-nav__link.is-disabled {
    opacity: 0.45;
    pointer-events: none;
}

.admin-main {
    min-width: 0;
}

.admin-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 12px;
    height: var(--mt-header-h);
    padding: 0 24px;
    border-bottom: 1px solid var(--mt-border);
    background: rgba(14, 14, 16, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.admin-content {
    padding: 24px;
    max-width: 1320px;
}

@media (max-width: 575.98px) {
    .admin-header,
    .admin-content {
        padding-left: 16px;
        padding-right: 16px;
    }
}

.breadcrumb {
    --bs-breadcrumb-margin-bottom: 0;
    --bs-breadcrumb-divider-color: var(--mt-text-subtle);
    --bs-breadcrumb-item-active-color: var(--mt-text);
    font-size: 0.875rem;
}

.breadcrumb a {
    color: var(--mt-text-muted);
}

/* Stat tiles */
.stat-card {
    height: 100%;
    padding: 20px;
    border-radius: var(--mt-radius-lg);
    background: var(--mt-surface);
    border: 1px solid var(--mt-border);
}

.stat-card__label {
    font-size: 0.85rem;
    color: var(--mt-text-muted);
    margin-bottom: 4px;
}

.stat-card__value {
    font-size: 1.85rem;
    font-weight: 600;
    color: #fff;
    line-height: 1.2;
}

.stat-card__delta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 2px 6px;
    margin-top: 6px;
    font-size: 0.8rem;
    color: var(--mt-text-muted);
}

.delta-up,
.delta-down {
    white-space: nowrap;
}

.delta-up { color: #4ade80; }
.delta-down { color: #f87171; }

/* Column chart (single series) */
.col-chart {
    margin: 0;
}

.col-chart__plot {
    --max: 100;
    position: relative;
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 1fr;
    align-items: end;
    height: 220px;
    margin-left: 36px;
    border-bottom: 1px solid var(--mt-border-strong);
}

.col-chart__grid {
    position: absolute;
    left: -36px;
    right: 0;
    bottom: calc(var(--v) / var(--max) * 100%);
    border-top: 1px solid var(--mt-border);
    pointer-events: none;
}

.col-chart__grid span {
    position: absolute;
    left: 0;
    top: -0.6em;
    width: 28px;
    text-align: right;
    font-size: 0.72rem;
    color: var(--mt-text-subtle);
    font-variant-numeric: tabular-nums;
}

.col-chart__band {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    height: 100%;
    cursor: default;
    outline-offset: -2px;
}

.col-chart__bar {
    position: relative;
    width: min(24px, 60%);
    height: calc(var(--v) / var(--max) * 100%);
    border-radius: 4px 4px 0 0;
    background: var(--mt-accent);
    transition: opacity var(--mt-transition);
}

.col-chart__plot:hover .col-chart__bar {
    opacity: 0.55;
}

.col-chart__plot:hover .col-chart__band:hover .col-chart__bar,
.col-chart__band:focus .col-chart__bar {
    opacity: 1;
}

.col-chart__value {
    position: absolute;
    bottom: calc(var(--v) / var(--max) * 100% + 4px);
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--mt-text);
    white-space: nowrap;
}

.col-chart__tip {
    position: absolute;
    bottom: calc(var(--v) / var(--max) * 100% + 28px);
    left: 50%;
    z-index: 2;
    transform: translateX(-50%);
    padding: 6px 10px;
    border-radius: var(--mt-radius-sm);
    background: var(--mt-surface-3);
    border: 1px solid var(--mt-border-strong);
    box-shadow: var(--mt-shadow);
    font-size: 0.75rem;
    color: var(--mt-text-muted);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--mt-transition);
}

.col-chart__tip strong {
    color: #fff;
}

.col-chart__band:hover .col-chart__tip,
.col-chart__band:focus .col-chart__tip {
    opacity: 1;
}

.col-chart__axis {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 1fr;
    margin: 6px 0 0 36px;
    font-size: 0.75rem;
    color: var(--mt-text-subtle);
    text-align: center;
}

/* Data tables */
.table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--mt-text);
    --bs-table-border-color: var(--mt-border);
    --bs-table-hover-bg: rgba(255, 255, 255, 0.03);
    --bs-table-hover-color: var(--mt-text);
    margin: 0;
    font-size: 0.9rem;
}

.table > thead th {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--mt-text-subtle);
    white-space: nowrap;
}

.table > :not(caption) > * > * {
    padding: 10px 12px;
    vertical-align: middle;
}

.table-numeric {
    text-align: right;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.table-media {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 200px;
}

.table-media .cover--wide {
    width: 88px;
    font-size: 1rem;
    border-radius: var(--mt-radius-sm);
}

.table-media__title {
    display: block;
    color: #fff;
    font-weight: 600;
}

.table-media__meta {
    display: block;
    font-size: 0.8rem;
    color: var(--mt-text-muted);
}

.table-card {
    overflow: hidden;
    border-radius: var(--mt-radius-lg);
    background: var(--mt-surface);
    border: 1px solid var(--mt-border);
}

.table-card .table-responsive {
    margin: 0;
}

.table-card__footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 16px;
    border-top: 1px solid var(--mt-border);
    font-size: 0.85rem;
    color: var(--mt-text-muted);
}

.table-card__footer .pagination {
    margin: 0;
}

.table-card__header {
    padding: 14px 16px;
    border-bottom: 1px solid var(--mt-border);
}

/* A checkbox list that scrolls instead of growing with the data (artist pickers) */
.scroll-box {
    max-height: 240px;
    overflow-y: auto;
    padding: 8px 12px;
    border-radius: var(--mt-radius-md, 8px);
    border: 1px solid var(--mt-border);
}

/* Filter toolbar above tables */
.toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.toolbar .search-field {
    flex: 1 1 240px;
    max-width: 360px;
}

.toolbar .form-select {
    width: auto;
}

/* Upload dropzone */
.upload-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 32px 20px;
    border: 2px dashed var(--mt-border-strong);
    border-radius: var(--mt-radius-lg);
    text-align: center;
    color: var(--mt-text-muted);
    transition: border-color var(--mt-transition), background-color var(--mt-transition);
}

.upload-zone:hover,
.upload-zone.is-dragover {
    border-color: var(--mt-accent);
    background: rgba(var(--mt-accent-rgb), 0.05);
}

.upload-zone.is-invalid {
    border-color: var(--mt-danger);
    background: rgba(239, 68, 68, 0.06);
}

.upload-zone__icon {
    font-size: 2rem;
    color: var(--mt-text-muted);
}

.upload-file {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border-radius: var(--mt-radius-lg);
    background: var(--mt-surface-2);
}

.upload-file__icon {
    width: 44px;
    height: 44px;
    border-radius: var(--mt-radius);
    display: grid;
    place-items: center;
    flex-shrink: 0;
    background: rgba(var(--mt-accent-rgb), 0.15);
    color: var(--mt-accent);
    font-size: 1.3rem;
}

.upload-file__body {
    flex: 1 1 220px;
    min-width: 0;
}

.progress {
    --bs-progress-bg: var(--mt-surface-3);
    --bs-progress-bar-bg: var(--mt-accent);
    --bs-progress-height: 6px;
    --bs-progress-border-radius: 999px;
}

/* Publish sidebar card */
.publish-card {
    position: sticky;
    top: calc(var(--mt-header-h) + 16px);
}

/* Form section panels */
.form-panel {
    padding: 20px;
    border-radius: var(--mt-radius-lg);
    background: var(--mt-surface);
    border: 1px solid var(--mt-border);
}

.form-panel + .form-panel {
    margin-top: 16px;
}

.form-panel__title {
    font-size: 1rem;
    margin-bottom: 16px;
}

/* Checkbox pills (genres, multi-select) */
.check-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.check-pills .btn {
    --bs-btn-padding-x: 0.9rem;
    --bs-btn-padding-y: 0.3rem;
    --bs-btn-font-size: 0.85rem;
}

.btn-check:checked + .btn-outline-light {
    background: var(--mt-accent);
    border-color: var(--mt-accent);
    color: var(--mt-accent-contrast);
}

/* Offcanvas forms */
.offcanvas {
    --bs-offcanvas-bg: var(--mt-surface);
    --bs-offcanvas-border-color: var(--mt-border);
    --bs-offcanvas-width: 460px;
}

/* Small helper for metadata rows in admin */
.meta-list {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 6px 16px;
    margin: 0;
    font-size: 0.85rem;
}

.meta-list dt {
    font-weight: 500;
    color: var(--mt-text-muted);
}

.meta-list dd {
    margin: 0;
    color: var(--mt-text);
}

/* ==========================================================================
   16. Styleguide & prototype helpers (prototype only)
   ========================================================================== */

.proto-switcher {
    position: fixed;
    right: 12px;
    bottom: 12px;
    z-index: 2000;
    max-width: calc(100vw - 24px);
    padding: 10px 12px;
    border-radius: var(--mt-radius);
    background: rgba(42, 42, 47, 0.95);
    border: 1px dashed var(--mt-border-strong);
    box-shadow: var(--mt-shadow);
    font-size: 0.75rem;
}

/* Inside the app shell, keep the switcher clear of the player and bottom nav */
.app-shell ~ .proto-switcher {
    top: calc(var(--mt-header-h) + 16px);
    bottom: auto;
    right: 24px;
}

@media (max-width: 991.98px) {
    .app-shell ~ .proto-switcher {
        top: auto;
        right: 12px;
        bottom: calc(var(--mt-bottomnav-h) + var(--mt-mini-player-h) + 16px + env(safe-area-inset-bottom));
    }
}

.proto-switcher__label {
    display: block;
    margin-bottom: 6px;
    color: var(--mt-text-muted);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.proto-switcher a {
    display: inline-block;
    margin: 2px 2px 0 0;
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--mt-surface-2);
    color: var(--mt-text);
}

.proto-switcher a.is-active {
    background: var(--mt-accent);
    color: var(--mt-accent-contrast);
}

.swatch {
    height: 72px;
    border-radius: var(--mt-radius);
    border: 1px solid var(--mt-border);
    margin-bottom: 8px;
}

.sg-section {
    padding-bottom: 40px;
    margin-bottom: 40px;
    border-bottom: 1px solid var(--mt-border);
}

.sg-section:last-child {
    border-bottom: 0;
}

/* Comfortable touch targets for small text links on touch screens */
@media (pointer: coarse), (max-width: 575.98px) {
    .section-header__link,
    .app-footer a,
    .auth-card__footer a,
    .panel a.small,
    .auth-card a.small,
    .stat-card__delta a,
    a.badge-soft {
        display: inline-flex;
        align-items: center;
        min-height: 28px;
    }

    .form-check-input {
        width: 24px;
        height: 24px;
        margin-top: 0;
    }

    .form-check {
        display: flex;
        align-items: center;
        gap: 8px;
        padding-left: 0;
    }

    .form-check .form-check-input {
        float: none;
        margin-left: 0;
        flex-shrink: 0;
    }

    .app-footer a {
        padding: 0 4px;
        margin: 0 -4px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition: none !important;
        animation: none !important;
    }
}