/* Shared song discovery and song-detail experience. */
.song-library-section {
    padding: 76px 0;
    background: #f5f1e9;
}

.song-library-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 30px;
}

.song-library-heading h2 {
    margin: 8px 0 10px;
    letter-spacing: -0.035em;
}

.song-library-heading p {
    margin: 0;
    color: var(--text-secondary, #666);
}

.song-library-all {
    color: inherit;
    font-weight: 750;
    text-decoration: none;
    white-space: nowrap;
}

.song-card-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
}

.song-card {
    display: block;
    padding: 24px;
    border: 1px solid rgba(20, 23, 31, 0.08);
    border-radius: 22px;
    color: inherit;
    text-decoration: none;
    background: rgba(255, 255, 255, 0.86);
    box-shadow: 0 14px 34px rgba(20, 23, 31, 0.06);
    transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.song-card:hover {
    transform: translateY(-4px);
    border-color: rgba(184, 135, 45, 0.22);
    box-shadow: 0 22px 44px rgba(20, 23, 31, 0.12);
}

.song-card-level {
    font-size: 0.76rem;
    font-weight: 800;
    color: #a4721d;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.song-card h3 {
    margin: 13px 0 9px;
    font-size: 1.12rem;
    letter-spacing: -0.02em;
}

.song-card p {
    margin: 0 0 20px;
    color: #6b7280;
    font-size: 0.91rem;
    line-height: 1.6;
}

.song-card-action {
    font-weight: 750;
    color: #805a1f;
}

/* Standalone song library pages. */
body.song-library-theme {
    min-height: 100vh;
    color: #e8ecf4;
    background:
        radial-gradient(circle at 84% 6%, rgba(214, 174, 92, 0.16), transparent 24%),
        linear-gradient(180deg, #090c13, #101722 68%, #0b0f17);
}

body.song-library-theme .nav-bar,
body[data-song-id] .nav-bar {
    background: rgba(8, 11, 18, 0.84);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
}

body.song-library-theme .nav-container,
body[data-song-id] .nav-container {
    max-width: 1220px;
}

body.song-library-theme .nav-links,
body[data-song-id] .nav-links {
    align-items: center;
    gap: 8px;
}

body.song-library-theme .nav-links > a,
body[data-song-id] .nav-links > a {
    padding: 10px 15px;
    border-radius: 999px;
    color: rgba(232, 236, 244, 0.72);
    font-weight: 650;
}

body.song-library-theme .nav-links > a:hover,
body.song-library-theme .nav-links > a.active,
body[data-song-id] .nav-links > a:hover,
body[data-song-id] .nav-links > a.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
}

.song-library-page {
    min-height: 72vh;
    padding: calc(var(--nav-height, 90px) + 38px) 0 90px;
}

.song-library-page > .container {
    max-width: 1180px;
}

.song-library-hero {
    position: relative;
    overflow: hidden;
    max-width: none;
    margin: 0 0 34px;
    padding: clamp(46px, 7vw, 82px);
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 36px;
    background:
        radial-gradient(circle at 80% 14%, rgba(226, 185, 98, 0.22), transparent 25%),
        linear-gradient(145deg, #20283a, #0a0e16 76%);
    box-shadow: 0 32px 90px rgba(0, 0, 0, 0.34);
}

.song-library-hero::after {
    content: '♪';
    position: absolute;
    right: clamp(26px, 7vw, 90px);
    bottom: -34px;
    color: rgba(229, 189, 105, 0.11);
    font-family: Georgia, serif;
    font-size: clamp(11rem, 24vw, 22rem);
    line-height: 1;
    pointer-events: none;
}

.song-library-hero .section-kicker,
.song-library-hero .song-library-kicker {
    position: relative;
    z-index: 1;
    color: #dfbd75;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.song-library-hero h1 {
    position: relative;
    z-index: 1;
    max-width: 780px;
    margin: 16px 0 18px;
    color: #fff;
    font-size: clamp(2.8rem, 6vw, 5.2rem);
    line-height: 1.02;
    letter-spacing: -0.06em;
    text-wrap: balance;
}

.song-library-hero p {
    position: relative;
    z-index: 1;
    max-width: 690px;
    margin: 0;
    color: rgba(226, 232, 240, 0.7);
    font-size: clamp(1rem, 1.45vw, 1.16rem);
    line-height: 1.82;
}

.song-library-summary {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 28px;
}

.song-library-summary span {
    position: relative;
    z-index: 1;
    padding: 9px 13px;
    border: 1px solid rgba(255, 255, 255, 0.11);
    border-radius: 999px;
    color: rgba(245, 247, 251, 0.78);
    background: rgba(255, 255, 255, 0.05);
    font-size: 0.86rem;
    font-weight: 650;
}

body.song-library-theme .song-card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

body.song-library-theme .song-card {
    min-height: 190px;
    padding: 28px;
    border-color: rgba(255, 255, 255, 0.08);
    color: #eef2f8;
    background:
        radial-gradient(circle at 100% 0%, rgba(215, 174, 90, 0.11), transparent 30%),
        rgba(255, 255, 255, 0.04);
    box-shadow: 0 20px 48px rgba(0, 0, 0, 0.18);
}

body.song-library-theme .song-card:hover {
    border-color: rgba(225, 188, 111, 0.24);
    box-shadow: 0 28px 58px rgba(0, 0, 0, 0.26);
}

body.song-library-theme .song-card h3 {
    color: #fff;
    font-size: 1.42rem;
}

body.song-library-theme .song-card p {
    color: rgba(220, 226, 238, 0.62);
}

body.song-library-theme .song-card-action {
    color: #e0bd75;
}

body.song-library-theme .footer {
    color: rgba(228, 233, 242, 0.56);
    background: #070a10;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
}

/* Song detail pages. */
body[data-song-id] {
    min-height: 100vh;
    color: #e9edf5;
    background:
        radial-gradient(circle at 82% 5%, rgba(213, 171, 85, 0.14), transparent 23%),
        linear-gradient(180deg, #090c13, #101620 70%, #0a0e15);
}

.song-page-main {
    padding: calc(var(--nav-height, 90px) + 36px) 0 90px;
}

.song-page-main > .container {
    max-width: 1180px;
}

.song-breadcrumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    color: rgba(220, 226, 238, 0.48);
    font-size: 0.9rem;
}

.song-breadcrumbs a {
    color: rgba(231, 235, 242, 0.72);
    text-decoration: none;
}

.song-hero-panel {
    position: relative;
    overflow: hidden;
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
    gap: 34px;
    padding: clamp(34px, 5vw, 58px);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 34px;
    color: #fff;
    background:
        radial-gradient(circle at 84% 12%, rgba(222, 181, 94, 0.21), transparent 25%),
        linear-gradient(145deg, #222a3d, #090d15 76%);
    box-shadow: 0 32px 86px rgba(0, 0, 0, 0.34);
}

.song-eyebrow {
    color: #dfbd75;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.song-hero-panel h1 {
    max-width: 760px;
    margin: 16px 0 18px;
    color: #fff;
    font-size: clamp(2.55rem, 5vw, 4.8rem);
    line-height: 1.02;
    letter-spacing: -0.055em;
    text-wrap: balance;
}

.song-hero-panel .song-lead {
    max-width: 700px;
    color: rgba(226, 231, 241, 0.7);
    font-size: 1.06rem;
    line-height: 1.78;
}

.song-meta-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    margin-top: 26px;
}

.song-meta-item {
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.05);
}

.song-meta-item strong {
    display: block;
    color: #fff;
    font-size: 1rem;
}

.song-meta-item span {
    display: block;
    margin-top: 3px;
    color: rgba(219, 225, 236, 0.53);
    font-size: 0.75rem;
}

.song-primary-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.song-primary-actions .btn {
    min-width: 164px;
    min-height: 50px;
    border-radius: 15px;
}

.song-primary-actions .btn.primary {
    color: #31250e;
    background: linear-gradient(135deg, #f3dfb7, #d6ad58);
}

.song-primary-actions .btn.secondary {
    color: #eef2f8;
    border-color: rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.055);
}

.song-note-preview {
    align-self: stretch;
    padding: 26px;
    border: 1px solid rgba(255, 255, 255, 0.11);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.055);
    backdrop-filter: blur(10px);
}

.song-note-preview h2 {
    margin: 0 0 16px;
    color: #fff;
    font-size: 1rem;
}

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

.note-chip {
    display: inline-flex;
    min-width: 38px;
    justify-content: center;
    padding: 9px 10px;
    border-radius: 10px;
    color: #2f240f;
    background: linear-gradient(135deg, #f4e3bf, #ddb968);
    font-weight: 850;
    box-shadow: 0 9px 22px rgba(214, 173, 88, 0.12);
}

.song-practice-shell {
    margin-top: 34px;
    padding: 34px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 30px;
    background: rgba(17, 23, 35, 0.78);
    box-shadow: 0 24px 58px rgba(0, 0, 0, 0.22);
}

.song-practice-toolbar {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.song-practice-toolbar h2 {
    margin: 0 0 7px;
    color: #fff;
    letter-spacing: -0.03em;
}

.song-practice-toolbar p {
    margin: 0;
    color: rgba(218, 225, 237, 0.62);
}

.song-practice-toolbar select,
body[data-song-id] .song-select {
    min-width: 240px;
    min-height: 48px;
    padding: 0 14px;
    color: #e8edf5;
    border: 1px solid rgba(255, 255, 255, 0.11);
    border-radius: 14px;
    background: #171d29;
}

body[data-song-id] .piano-container {
    overflow-x: auto;
    overflow-y: hidden;
    border: 1px solid rgba(255, 255, 255, 0.07);
    box-shadow: 0 22px 46px rgba(0, 0, 0, 0.26);
}

body[data-song-id] .practice-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
    gap: 18px;
}

body[data-song-id] .practice-controls-panel,
body[data-song-id] .practice-status-panel {
    padding: 22px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.035);
}

body[data-song-id] .practice-status-panel:empty {
    display: none;
}

body[data-song-id] .sustain-control {
    color: rgba(235, 239, 246, 0.74);
}

.song-content-section {
    padding: 62px 0 0;
}

.song-content-section h2 {
    margin-bottom: 24px;
    color: #fff;
    text-align: center;
    font-size: clamp(1.8rem, 3vw, 2.6rem);
}

body[data-song-id] .song-content-section .song-card {
    border-color: rgba(255, 255, 255, 0.08);
    color: #eef2f8;
    background: rgba(255, 255, 255, 0.04);
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.18);
}

body[data-song-id] .song-content-section .song-card h3 {
    color: #fff;
}

body[data-song-id] .song-content-section .song-card p {
    color: rgba(221, 227, 238, 0.6);
}

.song-section-lead {
    max-width: 720px;
    margin: 0 auto 28px;
    color: rgba(220, 226, 237, 0.62);
    text-align: center;
}

.song-section-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.song-section-card {
    padding: 24px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.04);
}

.song-section-card h3 {
    margin-top: 0;
    color: #fff;
}

.song-section-notes {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

.song-section-notes span {
    padding: 6px 8px;
    border-radius: 8px;
    color: #f0d397;
    background: rgba(224, 188, 117, 0.1);
    font-weight: 700;
}

@media (max-width: 980px) {
    .song-card-grid,
    body.song-library-theme .song-card-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .song-hero-panel {
        grid-template-columns: 1fr;
    }

    .song-meta-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .song-section-grid {
        grid-template-columns: 1fr 1fr;
    }

    body[data-song-id] .practice-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .song-library-section {
        padding: 50px 0;
    }

    .song-library-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .song-card-grid,
    body.song-library-theme .song-card-grid,
    .song-section-grid {
        grid-template-columns: 1fr;
    }

    .song-library-page,
    .song-page-main {
        padding-top: calc(var(--nav-height, 70px) + 22px);
        padding-bottom: 60px;
    }

    .song-library-hero,
    .song-hero-panel,
    .song-practice-shell {
        padding: 26px 20px;
        border-radius: 24px;
    }

    .song-meta-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .song-primary-actions .btn {
        width: 100%;
    }

    .song-practice-toolbar {
        align-items: stretch;
        flex-direction: column;
    }

    .song-practice-toolbar select {
        width: 100%;
        min-width: 0;
    }
}