:root {
    --accent: #e1073b;
    --accent-2: #f48a18;
    --gold: #ffbf4b;
    --ink: #19171d;
    --muted: #79717f;
    --line: rgba(25, 23, 29, 0.1);
    --surface: rgba(255, 255, 255, 0.88);
    --surface-strong: #ffffff;
    --shadow: 0 30px 90px rgba(53, 27, 38, 0.18);
    --radius: 8px;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    font-family: Inter, "Segoe UI", Arial, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at 85% 8%, rgba(225, 7, 59, 0.24), transparent 28rem),
        radial-gradient(circle at 14% 0%, rgba(255, 191, 75, 0.28), transparent 28rem),
        radial-gradient(circle at 55% 95%, rgba(244, 138, 24, 0.16), transparent 26rem),
        linear-gradient(135deg, #fff8f4 0%, #f5f7fb 42%, #fff3f8 100%);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(35, 29, 37, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(35, 29, 37, 0.035) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.65), transparent 72%);
}

button,
input {
    font: inherit;
}

button {
    cursor: pointer;
}

img {
    display: block;
    max-width: 100%;
}

.app-shell {
    width: min(1480px, calc(100% - 32px));
    min-height: calc(100vh - 32px);
    margin: 16px auto;
    display: grid;
    grid-template-columns: 260px 1fr;
    position: relative;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.72);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.sidebar {
    padding: 24px;
    background:
        radial-gradient(circle at 30% 0%, rgba(225, 7, 59, 0.36), transparent 14rem),
        radial-gradient(circle at 100% 46%, rgba(255, 191, 75, 0.16), transparent 12rem),
        linear-gradient(180deg, #211922 0%, #35202b 52%, #191820 100%);
    color: #fff;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
}

.brand img {
    width: 58px;
    height: 58px;
    border: 3px solid rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 12px 28px rgba(225, 7, 59, 0.32);
}

.brand span,
.brand strong {
    display: block;
    line-height: 1;
}

.brand span {
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.86rem;
}

.brand strong {
    margin-top: 4px;
    font-size: 1.3rem;
}

.nav-menu {
    display: grid;
    gap: 8px;
}

.nav-link {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 50px;
    padding: 0 15px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    color: rgba(255, 255, 255, 0.76);
    background: transparent;
    text-align: left;
}

.nav-link i {
    width: 20px;
    text-align: center;
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.08));
    border-color: rgba(255, 255, 255, 0.18);
    box-shadow: inset 3px 0 0 var(--gold);
}

.sidebar-panel {
    margin-top: 34px;
    padding: 18px;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.safe-vault {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
    padding: 16px;
    border-radius: var(--radius);
    color: #fff;
    background:
        linear-gradient(135deg, rgba(255, 191, 75, 0.24), rgba(225, 7, 59, 0.14)),
        rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.16);
}

.safe-vault i {
    width: 42px;
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #211d24;
    background: var(--gold);
}

.safe-vault strong,
.safe-vault span {
    display: block;
}

.safe-vault span {
    margin-top: 3px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.86rem;
}

.stat-line {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-top: 12px;
}

.stat-line strong {
    font-size: 1.6rem;
}

.stat-line span {
    color: rgba(255, 255, 255, 0.68);
}

.main-content {
    padding: 30px;
    overflow: hidden;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 18px;
}

.topbar h1,
.section-heading h2,
.player-details h2,
.panel h3 {
    margin: 0;
    letter-spacing: 0;
}

.topbar h1 {
    max-width: 780px;
    font-size: 4rem;
    line-height: 1.02;
}

.eyebrow,
.now-label {
    display: inline-flex;
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.search-box {
    flex: 0 1 380px;
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 52px;
    padding: 0 18px;
    border: 1px solid rgba(25, 23, 29, 0.08);
    border-radius: var(--radius);
    background: var(--surface-strong);
    box-shadow: 0 16px 38px rgba(35, 29, 37, 0.08);
}

.search-box:focus-within {
    border-color: rgba(225, 7, 59, 0.34);
    box-shadow: 0 18px 42px rgba(225, 7, 59, 0.12);
}

.dashboard-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 22px;
}

.metric-card {
    min-height: 88px;
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr);
    grid-template-rows: auto auto;
    column-gap: 12px;
    align-content: center;
    padding: 16px;
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: 16px;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.68)),
        radial-gradient(circle at top right, rgba(225, 7, 59, 0.12), transparent 9rem);
    box-shadow: 0 16px 34px rgba(35, 29, 37, 0.08);
}

.metric-card i {
    grid-row: 1 / 3;
    width: 48px;
    height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    color: #fff;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.metric-card span {
    color: var(--muted);
    font-size: 0.86rem;
}

.metric-card strong {
    margin-top: 2px;
    font-size: 1.7rem;
    line-height: 1;
}

.search-box i {
    color: var(--muted);
}

.search-box input {
    width: 100%;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--ink);
}

.section-view {
    display: none;
}

.section-view.active {
    display: block;
}

.player-hero {
    display: grid;
    grid-template-columns: minmax(270px, 420px) 1fr;
    gap: 28px;
    align-items: stretch;
    position: relative;
    overflow: hidden;
    padding: 28px;
    border: 1px solid rgba(255, 255, 255, 0.78);
    border-radius: 24px;
    background:
        radial-gradient(circle at 86% 12%, rgba(255, 191, 75, 0.34), transparent 17rem),
        radial-gradient(circle at 12% 80%, rgba(225, 7, 59, 0.16), transparent 15rem),
        linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.62)),
        linear-gradient(135deg, rgba(225, 7, 59, 0.12), rgba(244, 138, 24, 0.12));
    box-shadow: 0 24px 64px rgba(60, 35, 46, 0.14);
}

.player-hero::after {
    content: "";
    position: absolute;
    width: 260px;
    height: 260px;
    right: -92px;
    bottom: -110px;
    border: 36px solid rgba(225, 7, 59, 0.07);
    border-radius: 50%;
}

.cover-wrap {
    position: relative;
    min-height: 360px;
    display: grid;
    grid-template-rows: 1fr 100px;
    gap: 16px;
    z-index: 1;
}

.cover-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    color: #fff;
    background: rgba(25, 23, 29, 0.72);
    backdrop-filter: blur(12px);
    font-size: 0.84rem;
    font-weight: 700;
}

.cover-wrap img {
    width: 100%;
    height: 100%;
    min-height: 244px;
    object-fit: cover;
    border: 8px solid rgba(255, 255, 255, 0.82);
    border-radius: 22px;
    box-shadow: 0 24px 50px rgba(0, 0, 0, 0.2);
}

#visualizer {
    width: 100%;
    height: 100px;
    border-radius: 16px;
    background:
        radial-gradient(circle at top, rgba(225, 7, 59, 0.24), transparent 8rem),
        #211d24;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.player-details {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
    position: relative;
    z-index: 1;
}

.player-details h2 {
    margin-top: 12px;
    font-size: 4.4rem;
    line-height: 1;
    overflow-wrap: anywhere;
}

.player-details p {
    margin: 12px 0 28px;
    color: var(--muted);
    font-size: 1.05rem;
}

.song-meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: -10px 0 24px;
}

.song-meta-row span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    color: var(--ink);
    background: rgba(255, 255, 255, 0.66);
    border: 1px solid rgba(25, 23, 29, 0.08);
    font-size: 0.88rem;
    font-weight: 700;
}

.song-meta-row i {
    color: var(--accent);
}

.progress-area input,
.volume-control input {
    width: 100%;
    accent-color: var(--accent);
}

.progress-area input {
    height: 8px;
}

.time-row {
    display: flex;
    justify-content: space-between;
    color: var(--muted);
    font-size: 0.9rem;
    margin-top: 6px;
}

.controls,
.utility-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.controls {
    margin: 26px 0 18px;
}

.icon-btn,
.play-btn,
.soft-btn {
    border: 0;
    border-radius: var(--radius);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}

.icon-btn {
    width: 48px;
    height: 48px;
    color: var(--ink);
    background: rgba(255, 255, 255, 0.78);
    box-shadow: 0 10px 22px rgba(35, 29, 37, 0.08);
}

.icon-btn:hover,
.icon-btn.active {
    color: #fff;
    background: var(--accent);
    transform: translateY(-2px);
}

.play-btn {
    width: 74px;
    height: 74px;
    color: #fff;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    box-shadow: 0 18px 38px rgba(225, 7, 59, 0.34);
    font-size: 1.45rem;
}

.play-btn:hover,
.soft-btn:hover {
    transform: translateY(-2px);
}

.soft-btn {
    min-height: 42px;
    gap: 8px;
    padding: 0 14px;
    color: var(--ink);
    background: rgba(255, 255, 255, 0.76);
    box-shadow: 0 10px 22px rgba(35, 29, 37, 0.06);
}

.soft-btn.active {
    color: #fff;
    background: var(--accent);
}

.soft-btn.compact {
    min-height: 36px;
}

.volume-control {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1 1 220px;
    min-height: 42px;
    padding: 0 14px;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.76);
    box-shadow: 0 10px 22px rgba(35, 29, 37, 0.06);
}

.content-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(330px, 390px);
    gap: 22px;
    margin-top: 22px;
}

.panel,
.lyrics-box,
.upload-zone,
.setting-card {
    border: 1px solid rgba(255, 255, 255, 0.72);
    border-radius: 18px;
    background: var(--surface);
    box-shadow: 0 18px 42px rgba(35, 29, 37, 0.08);
    backdrop-filter: blur(14px);
}

.panel {
    padding: 20px;
}

.panel-heading,
.section-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 16px;
}

.panel h3,
.section-heading h2 {
    margin-top: 4px;
}

.track-list,
.mix-list,
.stored-shelf,
.playlist-grid,
.settings-grid {
    display: grid;
    gap: 12px;
}

.track-row,
.mix-card,
.playlist-card {
    border: 1px solid rgba(25, 23, 29, 0.06);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.7);
    transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.track-row {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr) auto auto;
    align-items: center;
    gap: 12px;
    padding: 12px;
    text-align: left;
}

.store-row {
    padding: 13px;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.68)),
        radial-gradient(circle at top right, rgba(255, 191, 75, 0.2), transparent 10rem);
    box-shadow: 0 12px 26px rgba(35, 29, 37, 0.06);
}

.track-row .track-remove {
    width: 34px;
    height: 34px;
    border: 0;
    border-radius: var(--radius);
    color: var(--muted);
    background: rgba(25, 23, 29, 0.06);
}

.track-row .track-remove:hover {
    color: #fff;
    background: var(--accent);
}

.track-row:hover,
.track-row.active {
    border-color: rgba(225, 7, 59, 0.28);
    background: #fff;
    transform: translateY(-1px);
}

.track-row.active {
    box-shadow: inset 4px 0 0 var(--accent), 0 16px 30px rgba(225, 7, 59, 0.1);
}

.track-row img {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    object-fit: cover;
}

.row-actions {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.mini-action {
    min-width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 0 10px;
    border: 0;
    border-radius: 10px;
    color: var(--ink);
    background: rgba(25, 23, 29, 0.07);
    transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}

.mini-action:hover {
    color: #fff;
    background: var(--accent);
    transform: translateY(-1px);
}

.store-action {
    color: #fff;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.track-copy {
    min-width: 0;
}

.track-copy strong,
.track-copy span {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.track-copy span,
.track-time {
    color: var(--muted);
    font-size: 0.9rem;
}

.mix-card,
.playlist-card {
    padding: 16px;
}

.stored-shelf {
    align-content: start;
}

.shelf-empty {
    min-height: 220px;
    display: grid;
    place-items: center;
    gap: 8px;
    padding: 24px;
    color: var(--muted);
    text-align: center;
    border: 1px dashed rgba(225, 7, 59, 0.25);
    border-radius: 16px;
    background:
        radial-gradient(circle at top, rgba(255, 191, 75, 0.16), transparent 11rem),
        rgba(255, 255, 255, 0.62);
}

.shelf-empty i {
    width: 58px;
    height: 58px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #fff;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    font-size: 1.35rem;
}

.shelf-empty strong {
    color: var(--ink);
}

.shelf-play-all {
    width: 100%;
    min-height: 48px;
    color: #fff;
    background:
        radial-gradient(circle at top left, rgba(255, 191, 75, 0.18), transparent 8rem),
        linear-gradient(135deg, #211d24, #3a2430);
}

.stored-card {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr) auto auto;
    align-items: center;
    gap: 10px;
    padding: 11px;
    border: 1px solid rgba(225, 7, 59, 0.14);
    border-radius: 14px;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.76)),
        radial-gradient(circle at top left, rgba(244, 138, 24, 0.16), transparent 8rem);
    box-shadow: 0 14px 28px rgba(35, 29, 37, 0.08);
    transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.stored-card:hover {
    transform: translateY(-1px);
    border-color: rgba(225, 7, 59, 0.28);
    background: #fff;
}

.stored-card img {
    width: 54px;
    height: 54px;
    border-radius: 12px;
    object-fit: cover;
}

.stored-card strong,
.stored-card span {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.stored-card span {
    margin-top: 3px;
    color: var(--muted);
    font-size: 0.88rem;
}

.mix-card strong,
.playlist-card strong {
    display: block;
}

.mix-card span,
.playlist-card span {
    display: block;
    margin-top: 5px;
    color: var(--muted);
}

.mix-card button,
.playlist-card button {
    margin-top: 14px;
}

.playlist-grid {
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.playlist-card {
    min-height: 176px;
    background:
        radial-gradient(circle at top right, rgba(255, 191, 75, 0.2), transparent 9rem),
        linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.7));
    box-shadow: 0 16px 34px rgba(35, 29, 37, 0.08);
}

.upload-zone {
    min-height: 210px;
    display: grid;
    place-items: center;
    gap: 8px;
    padding: 32px;
    text-align: center;
    border: 1px dashed rgba(225, 7, 59, 0.34);
    margin-bottom: 20px;
    background:
        radial-gradient(circle at top, rgba(255, 191, 75, 0.16), transparent 15rem),
        rgba(255, 255, 255, 0.74);
}

.upload-zone.dragover {
    border-color: var(--accent);
    background: rgba(225, 7, 59, 0.06);
}

.upload-zone i {
    width: 74px;
    height: 74px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #fff;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    font-size: 2.4rem;
}

.upload-zone span {
    color: var(--muted);
}

.upload-zone input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
}

.vault-meter {
    display: grid;
    grid-template-columns: minmax(180px, 260px) 1fr;
    align-items: center;
    gap: 18px;
    margin-bottom: 20px;
    padding: 16px;
    border-radius: 14px;
    color: #fff;
    background: linear-gradient(135deg, #211d24, #3a2430);
    box-shadow: 0 16px 34px rgba(35, 29, 37, 0.14);
}

.vault-meter strong,
.vault-meter span {
    display: block;
}

.vault-meter span {
    margin-top: 4px;
    color: rgba(255, 255, 255, 0.68);
    font-size: 0.9rem;
}

.meter-track {
    height: 10px;
    overflow: hidden;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
}

.meter-track span {
    display: block;
    width: 0%;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--gold), var(--accent-2), var(--accent));
    transition: width 220ms ease;
}

.lyrics-box {
    padding: 28px;
    color: var(--muted);
    line-height: 1.8;
    white-space: pre-line;
}

.settings-grid {
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.setting-card {
    min-height: 90px;
    padding: 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.setting-card span {
    font-weight: 700;
}

.toast {
    position: fixed;
    right: 20px;
    bottom: 20px;
    max-width: min(360px, calc(100vw - 40px));
    padding: 12px 16px;
    border-radius: var(--radius);
    color: #fff;
    background: #231d25;
    box-shadow: 0 18px 38px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.empty-state {
    padding: 22px;
    color: var(--muted);
    text-align: center;
    border: 1px dashed var(--line);
    border-radius: var(--radius);
}

@media (max-width: 1080px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        display: grid;
        grid-template-columns: auto 1fr;
        gap: 18px;
        align-items: center;
    }

    .brand {
        margin-bottom: 0;
    }

    .nav-menu {
        grid-template-columns: repeat(5, minmax(0, 1fr));
    }

    .sidebar-panel {
        display: none;
    }

    .safe-vault {
        display: none;
    }

    .content-grid,
    .player-hero {
        grid-template-columns: 1fr;
    }

    .topbar h1 {
        font-size: 3.2rem;
    }

    .player-details h2 {
        font-size: 3.5rem;
    }
}

@media (max-width: 760px) {
    .app-shell {
        width: 100%;
        min-height: 100vh;
        margin: 0;
        border-radius: 0;
    }

    .main-content,
    .sidebar {
        padding: 18px;
    }

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

    .topbar h1 {
        font-size: 2.45rem;
    }

    .search-box {
        flex-basis: auto;
    }

    .dashboard-strip {
        grid-template-columns: 1fr;
    }

    .metric-card {
        min-height: 76px;
    }

    .nav-menu {
        display: flex;
        overflow-x: auto;
        padding-bottom: 4px;
    }

    .nav-link {
        flex: 0 0 auto;
        width: auto;
    }

    .nav-link span {
        display: none;
    }

    .player-hero {
        padding: 16px;
    }

    .cover-wrap {
        min-height: auto;
    }

    .player-details h2 {
        font-size: 2.55rem;
    }

    .song-meta-row {
        gap: 8px;
    }

    .song-meta-row span {
        min-height: 32px;
        font-size: 0.8rem;
    }

    .track-row {
        grid-template-columns: 48px minmax(0, 1fr) auto;
    }

    .track-row img {
        width: 48px;
        height: 48px;
    }

    .track-time {
        display: none;
    }

    .store-action span {
        display: none;
    }

    .stored-card {
        grid-template-columns: 46px minmax(0, 1fr) auto;
    }

    .stored-card [data-shelf-remove] {
        display: none;
    }

    .vault-meter {
        grid-template-columns: 1fr;
    }
}