/* ─── Reset ─── */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* ─── Theme Variables ─── */
:root {
    --font-family: 'Outfit', sans-serif;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition-fast: 0.15s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-slow: 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
}

body.dark {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.6);
    --accent: #666666;
    --accent-hover: #888888;
    --secondary: #2a2a35;
    --secondary-hover: #3d3d4a;
    --danger: #ff4757;
    --success: #2ed573;
    --playing-bg: rgba(46, 213, 115, 0.15);
    --playing-border: #2ed573;
    --modal-overlay: rgba(0, 0, 0, 0.7);
    --badge-bg: #666666;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-hover: rgba(255, 255, 255, 0.08);
    --input-bg: rgba(0, 0, 0, 0.2);
    --shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
    --progress-bg: rgba(255, 255, 255, 0.1);
    --divider: rgba(255, 255, 255, 0.08);
}

body.light {
    --bg-primary: #f5f5f7;
    --bg-secondary: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.1);
    --text-primary: #1a1a2e;
    --text-secondary: rgba(0, 0, 0, 0.5);
    --accent: #555555;
    --accent-hover: #777777;
    --secondary: #e8e8ed;
    --secondary-hover: #d6d6dd;
    --danger: #e8204a;
    --success: #1db954;
    --playing-bg: rgba(29, 185, 84, 0.12);
    --playing-border: #1db954;
    --modal-overlay: rgba(0, 0, 0, 0.3);
    --badge-bg: #555555;
    --card-bg: rgba(0, 0, 0, 0.03);
    --card-hover: rgba(0, 0, 0, 0.06);
    --input-bg: rgba(255, 255, 255, 0.8);
    --shadow: 0 30px 60px rgba(0, 0, 0, 0.08);
    --progress-bg: rgba(0, 0, 0, 0.08);
    --divider: rgba(0, 0, 0, 0.06);
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 2rem 0;
    overflow-x: hidden;
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

/* ─── Background Animation ─── */
.background-animation {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(128, 128, 128, 0.04) 0%, rgba(0, 0, 0, 0) 50%),
                radial-gradient(circle at 80% 20%, rgba(128, 128, 128, 0.04) 0%, rgba(0, 0, 0, 0) 40%);
    animation: rotateBg 60s linear infinite;
    z-index: -1;
    transition: opacity 2s ease-in-out;
}

body.light .background-animation {
    opacity: 0.3;
}

/* ─── Chilean Flag Background ─── */
.chilean-flag-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    background-color: #ffffff;
    background-image:
        linear-gradient(to bottom, transparent 66.66%, #D82B28 66.66%),
        linear-gradient(#003893, #003893);
    background-size:
        100% 100%,
        25% 66.66%;
    background-repeat: no-repeat;
    background-position:
        0 0,
        0 0;
    opacity: 0.06;
    pointer-events: none;
}

.chilean-flag-bg::after {
    content: '★';
    position: fixed;
    top: 0;
    left: 0;
    width: 25vw;
    height: 66.66vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: min(12vw, 20vh);
    color: #ffffff;
    opacity: 0.06;
    pointer-events: none;
    line-height: 1;
    transform: translate(0, 0);
}

body.dark .chilean-flag-bg {
    opacity: 0.05;
}

body.light .chilean-flag-bg {
    opacity: 0.08;
}

@keyframes rotateBg {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ─── Background Animation During Playback ─── */
body.is-playing .background-animation {
    animation: rotateBg 60s linear infinite, bgSlowDrift 20s ease-in-out infinite alternate;
}

@keyframes bgSlowDrift {
    0% { transform: rotate(0deg) scale(1); opacity: 0.7; }
    50% { transform: rotate(3deg) scale(1.05); opacity: 1; }
    100% { transform: rotate(0deg) scale(1); opacity: 0.7; }
}

.chilean-flag-bg {
    transition: opacity 2s ease-in-out;
}

body.is-playing .chilean-flag-bg {
    animation: flagPulse 8s ease-in-out infinite alternate;
}

@keyframes flagPulse {
    0% { opacity: 0.03; }
    50% { opacity: 0.12; }
    100% { opacity: 0.03; }
}

.chilean-flag-bg::after {
    transition: opacity 2s ease-in-out, transform 2s ease-in-out;
}

body.is-playing .chilean-flag-bg::after {
    animation: starPulse 8s ease-in-out infinite alternate;
}

@keyframes starPulse {
    0% { opacity: 0.03; transform: scale(1); }
    50% { opacity: 0.10; transform: scale(1.06); }
    100% { opacity: 0.03; transform: scale(1); }
}

/* ─── App Layout ─── */
.app-wrapper {
    width: 100%;
    max-width: 1200px;
    padding: 0 2rem;
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    gap: 2rem;
    transition: background var(--transition-slow), border-color var(--transition-slow),
                box-shadow var(--transition-slow);
}

.main-panel {
    padding: 2rem;
}

@media (min-width: 768px) {
    .main-panel {
        padding: 2.5rem;
    }
}

/* ─── Header ─── */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--divider);
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo i {
    font-size: 2.5rem;
    color: var(--accent);
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h1 {
    font-weight: 800;
    font-size: 1.8rem;
    letter-spacing: -1px;
}

@media (min-width: 768px) {
    h1 {
        font-size: 2.2rem;
    }
}

.header-tags {
    display: flex;
    gap: 0.8rem;
    align-items: center;
}

.tag {
    background: var(--card-bg);
    color: var(--text-secondary);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid var(--glass-border);
    white-space: nowrap;
}

/* ─── Song Metadata ─── */
.song-metadata {
    padding-bottom: 0.5rem;
}

.metadata-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    align-items: center;
}

.metadata-field {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    min-width: 150px;
}

.metadata-field i {
    color: var(--text-secondary);
    font-size: 0.9rem;
    width: 16px;
    text-align: center;
}

.metadata-field .form-control {
    flex: 1;
}

.metadata-small {
    flex: 0 0 auto;
    min-width: 120px;
}

.metadata-small select {
    min-width: 100px;
}

/* ─── Toolbar ─── */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.playback-controls, .settings-controls {
    display: flex;
    gap: 0.6rem;
    align-items: center;
    flex-wrap: wrap;
}

/* ─── Buttons ─── */
.btn {
    border: none;
    padding: 0.7rem 1.5rem;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition);
    white-space: nowrap;
    line-height: 1.2;
    position: relative;
}

.btn:active {
    transform: scale(0.96);
}

.btn-sm {
    padding: 0.45rem 0.9rem;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
}

.btn-icon {
    padding: 0.7rem;
    justify-content: center;
    min-width: 42px;
}

.btn-primary {
    background: var(--accent);
    color: white;
    box-shadow: 0 8px 20px rgba(128, 128, 128, 0.2);
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 12px 25px rgba(128, 128, 128, 0.3);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--secondary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--secondary-hover);
    transform: translateY(-1px);
}

.btn-danger {
    background: rgba(255, 71, 87, 0.12);
    color: var(--danger);
}

.btn-danger:hover {
    background: var(--danger);
    color: white;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
}

.btn-ghost:hover {
    background: var(--secondary);
    color: var(--text-primary);
}

.btn-danger-ghost:hover {
    background: rgba(255, 71, 87, 0.15);
    color: var(--danger);
}

.btn-badge {
    background: var(--badge-bg);
    color: white;
    font-size: 0.7rem;
    padding: 0.15rem 0.45rem;
    border-radius: 10px;
    font-weight: 700;
    min-width: 18px;
    text-align: center;
}

.btn-secondary:hover .btn-badge {
    filter: brightness(1.2);
}

/* ─── BPM Input ─── */
.bpm-input {
    display: flex;
    align-items: center;
    background: var(--secondary);
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-md);
    gap: 0.6rem;
}

.bpm-input i {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.bpm-input input {
    width: 50px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
    outline: none;
}

.bpm-input span {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 600;
}

/* ─── Composer Area ─── */
.composer-container {
    background: var(--input-bg);
    border-radius: var(--radius-lg);
    min-height: 200px;
    padding: 1.2rem;
    border: 1px solid var(--glass-border);
    max-height: 450px;
    overflow-y: auto;
    transition: background var(--transition-slow);
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 150px;
    color: var(--text-secondary);
    gap: 0.8rem;
    opacity: 0.6;
    grid-column: 1 / -1;
    text-align: center;
}

.empty-state i {
    font-size: 3rem;
}

.composer-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    align-content: flex-start;
}

/* ─── Chord Box ─── */
.chord-box {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 0.8rem;
    min-width: 110px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    position: relative;
    transition: all var(--transition);
    cursor: pointer;
    animation: chordIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes chordIn {
    from { opacity: 0; transform: scale(0.8) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.chord-box:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.chord-box.playing {
    background: var(--playing-bg);
    border-color: var(--playing-border);
    box-shadow: 0 0 25px rgba(46, 213, 115, 0.25);
    transform: scale(1.05);
}

.chord-box-name {
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: -0.3px;
}

.chord-box-remove {
    position: absolute;
    top: 4px;
    right: 4px;
    background: rgba(255, 71, 87, 0.85);
    color: white;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition);
    z-index: 5;
}

.chord-box:hover .chord-box-remove {
    opacity: 1;
}

.chord-diagram-container {
    width: 110px;
    height: 140px;
    position: relative;
    overflow: visible;
}

.chord-diagram-container svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.fret-badge {
    position: absolute;
    bottom: 6px;
    left: 6px;
    background: var(--accent);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 800;
    padding: 2px 6px;
    border-radius: 4px;
    z-index: 20;
    letter-spacing: 0.03em;
    pointer-events: none;
}

/* ─── Playback Progress ─── */
.playback-progress {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.playback-progress.hidden {
    display: none;
}

.progress-track {
    flex: 1;
    height: 4px;
    background: var(--progress-bg);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--success);
    border-radius: 2px;
    transition: width 0.1s linear;
}

.progress-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 50px;
    text-align: right;
}

/* ─── Lyrics ─── */
.lyrics-panel {
    padding-top: 0.5rem;
}

.lyrics-panel h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.lyrics-panel-body {
    display: flex;
    gap: 0.6rem;
    align-items: flex-start;
}

.lyrics-chord-chips {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    flex-shrink: 0;
    padding-top: 0.15rem;
}

.chord-chip {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 0.3rem 0.5rem;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
    font-family: var(--font-family);
    min-width: 42px;
    line-height: 1;
}

.chord-chip:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(128, 128, 128, 0.2);
}

.chord-chip:active {
    transform: translateY(0);
}

.lyrics-input {
    flex: 1;
    min-height: 180px;
    padding: 1rem;
    background: var(--input-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.05rem;
    resize: vertical;
    line-height: 1.6;
    transition: background var(--transition-slow), border-color var(--transition-slow),
                color var(--transition-slow);
}

.lyrics-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(128, 128, 128, 0.15);
}

/* ─── Form Controls ─── */
.form-control {
    background: var(--input-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-family);
    padding: 0.6rem 0.8rem;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(128, 128, 128, 0.15);
}

.form-control::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

select.form-control {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    padding-right: 1.8rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23999' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.6rem center;
}

.form-control-sm {
    padding: 0.35rem 0.6rem;
    font-size: 0.8rem;
}

/* ─── Palette ─── */
.palette-panel {
    border-top: 1px solid var(--divider);
    padding-top: 1.5rem;
}

.palette-section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin: 1.2rem 0 0.8rem;
    padding-top: 1rem;
    border-top: 1px solid var(--divider);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.essential-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.6rem;
}

.quick-chord-btn {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 0.45rem 0.7rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition);
    min-width: 44px;
    font-family: var(--font-family);
}

.quick-chord-btn:hover {
    background: var(--card-hover);
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(128, 128, 128, 0.15);
}

.quick-chord-btn:active {
    transform: translateY(0);
}

.chord-selector {
    display: flex;
    gap: 0.8rem;
    align-items: center;
    margin-top: 0.8rem;
    flex-wrap: wrap;
}

.custom-select {
    position: relative;
    display: inline-block;
}

.custom-select select {
    appearance: none;
    -webkit-appearance: none;
    background: var(--input-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 0.7rem 2.2rem 0.7rem 1rem;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition);
    outline: none;
    min-width: 100px;
}

.custom-select select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(128, 128, 128, 0.15);
}

.custom-select select:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.db-status {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 400;
}

/* ─── Strumming ─── */
.strum-section {
    margin-top: 1.2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--divider);
}

.strum-title {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.6rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.strum-btn-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.strum-btn {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 0.5rem 0.8rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-family);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
    transition: all var(--transition);
    min-width: 58px;
}

.strum-btn:hover {
    border-color: rgba(255, 255, 255, 0.3);
    background: var(--card-hover);
    transform: translateY(-1px);
}

.strum-btn.active {
    background: var(--card-hover);
    border-color: var(--accent);
    box-shadow: 0 0 12px rgba(128, 128, 128, 0.2);
}

.strum-icon {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -1px;
    line-height: 1;
    font-family: 'Courier New', monospace;
}

.strum-name {
    font-size: 0.6rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.strum-btn.active .strum-name {
    color: var(--accent);
}

/* ─── Modal ─── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--modal-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease;
    padding: 1rem;
}

.modal-overlay.hidden {
    display: none;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal {
    width: 100%;
    max-width: 700px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: modalSlide 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    padding: 1.5rem;
}

@keyframes modalSlide {
    from { opacity: 0; transform: translateY(20px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--divider);
    margin-bottom: 0;
}

.modal-header h2 {
    font-size: 1.3rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.modal-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

/* ─── Library ─── */
.library-search {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--divider);
}

.library-search i {
    color: var(--text-secondary);
}

.library-search input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 0.95rem;
    outline: none;
}

.library-search input::placeholder {
    color: var(--text-secondary);
}

.library-grid {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.8rem;
    min-height: 100px;
}

.library-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.library-card:hover {
    background: var(--card-hover);
    border-color: var(--accent);
    transform: translateY(-2px);
}

.library-card-title {
    font-weight: 700;
    font-size: 1rem;
    line-height: 1.2;
    color: #1a1a2e;
}

body.dark .library-card-title {
    color: #ffffff;
}

.library-card-artist {
    font-size: 0.8rem;
    color: #666666;
}

body.dark .library-card-artist {
    color: rgba(255, 255, 255, 0.65);
}

.library-card-meta {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-top: 0.3rem;
}

.library-card-tag {
    font-size: 0.65rem;
    padding: 0.15rem 0.4rem;
    background: rgba(0, 0, 0, 0.06);
    border-radius: 4px;
    color: #555555;
    font-weight: 600;
    text-transform: uppercase;
}

body.dark .library-card-tag {
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.7);
}

.library-card-actions {
    display: flex;
    gap: 0.3rem;
    margin-top: 0.3rem;
}

.library-card-actions .btn {
    flex: 1;
    justify-content: center;
    padding: 0.35rem;
    font-size: 0.75rem;
}

/* ─── Logo Flag ─── */
.logo-icon {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.logo-flag {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 32px;
    height: 22px;
    transform: translate(-50%, -50%);
    border-radius: 3px;
    background-color: #ffffff;
    background-image:
        linear-gradient(to bottom, transparent 66.66%, #D82B28 66.66%),
        linear-gradient(#003893, #003893);
    background-size:
        100% 100%,
        25% 66.66%;
    background-repeat: no-repeat;
    background-position:
        0 0,
        0 0;
    opacity: 0.7;
    pointer-events: none;
    z-index: 0;
}

.logo-flag::after {
    content: '★';
    position: absolute;
    top: 0;
    left: 0;
    width: 25%;
    height: 66.66%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    color: #ffffff;
    line-height: 1;
}

.logo-icon i {
    position: relative;
    z-index: 1;
}

/* ─── Top Bar ─── */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0 0 0.5rem;
    border-bottom: 1px solid var(--divider);
    flex-wrap: wrap;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.btn-accent {
    background: var(--accent);
    color: white;
    border: none;
    padding: 0.45rem 0.7rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-family);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    line-height: 1.2;
}

.btn-accent:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

/* ─── Theme Selector ─── */
.theme-selector {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 0.5rem;
    padding: 0 0 0.5rem;
    flex-wrap: wrap;
    margin: 0;
    border-bottom: 1px solid var(--divider);
}

.theme-center {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    justify-content: center;
}

.theme-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    text-transform: uppercase;
}

.theme-btn {
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-secondary);
    padding: 0.35rem 1rem;
    border-radius: 50px;
    font-family: var(--font-family);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    backdrop-filter: blur(10px);
}

.theme-btn:hover {
    color: var(--text-primary);
    border-color: var(--accent);
    transform: translateY(-1px);
}

.theme-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    box-shadow: 0 4px 15px rgba(128, 128, 128, 0.3);
}

/* ─── Metronome ─── */
#btn-metronome {
    gap: 0.4rem;
}

#btn-metronome span {
    font-size: 0.75rem;
    font-weight: 600;
}

#btn-metronome.active,
.btn-metronome-on {
    color: var(--success) !important;
    border-color: var(--success) !important;
    box-shadow: 0 0 10px rgba(46, 213, 115, 0.2), 0 0 0 2px rgba(46, 213, 115, 0.1);
}

#btn-metronome.active i,
.btn-metronome-on i {
    animation: metronomePulse 0.5s ease-in-out infinite alternate;
}

@keyframes metronomePulse {
    from { opacity: 0.6; transform: scale(0.95); }
    to   { opacity: 1;   transform: scale(1.05); }
}

/* ─── Footer ─── */
.app-footer {
    text-align: center;
    padding: 1.5rem 0 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.6;
    font-weight: 400;
    letter-spacing: 0.03em;
}

/* ─── Theme Background Overlay ─── */
body.theme-naturaleza::before,
body.theme-bliss::before,
body.theme-oceano::before,
body.theme-playa::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
}

body.theme-naturaleza .background-animation,
body.theme-bliss .background-animation,
body.theme-oceano .background-animation,
body.theme-playa .background-animation,
body.theme-naturaleza .chilean-flag-bg,
body.theme-bliss .chilean-flag-bg,
body.theme-oceano .chilean-flag-bg,
body.theme-playa .chilean-flag-bg {
    opacity: 0 !important;
}

/* ─── Naturaleza ─── */
body.theme-naturaleza {
    background:
        radial-gradient(ellipse at 50% 0%, rgba(80,200,255,0.18) 0%, transparent 40%),
        radial-gradient(ellipse at 30% 80%, rgba(30,120,180,0.08) 0%, transparent 50%);
    background-attachment: fixed;
    --accent: #4aade0;
    --accent-hover: #5ab8ea;
    --badge-bg: #4aade0;
    --success: #2ed573;
}

body.theme-naturaleza::before {
    background:
        linear-gradient(to bottom, rgba(0,0,0,0.5), rgba(0,0,0,0.7)),
        radial-gradient(ellipse at 20% 80%, #1a3a2a 0%, #0d2818 40%, #07100c 100%);
}

body.theme-naturaleza .btn-primary {
    box-shadow: 0 8px 20px rgba(74, 173, 224, 0.3);
}

body.theme-naturaleza .btn-primary:hover {
    box-shadow: 0 12px 25px rgba(74, 173, 224, 0.4);
}

/* ─── Bliss ─── */
body.theme-bliss {
    background:
        radial-gradient(ellipse at 50% 0%, rgba(255,180,80,0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 20% 80%, rgba(200,100,30,0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 60%, rgba(255,150,50,0.08) 0%, transparent 50%);
    background-attachment: fixed;
    --accent: #e07c2e;
    --accent-hover: #d46d1d;
    --badge-bg: #e07c2e;
    --success: #2ed573;
}

body.theme-bliss::before {
    background:
        linear-gradient(to bottom, rgba(0,0,0,0.5), rgba(0,0,0,0.65)),
        radial-gradient(ellipse at 50% 20%, #ff9a56 0%, #e07c2e 25%, #8b4513 55%, #1a0a00 100%);
}

body.theme-bliss .btn-primary {
    box-shadow: 0 8px 20px rgba(224, 124, 46, 0.3);
}

body.theme-bliss .btn-primary:hover {
    box-shadow: 0 12px 25px rgba(224, 124, 46, 0.4);
}

/* ─── Océano ─── */
body.theme-oceano {
    background:
        radial-gradient(ellipse at 20% 30%, rgba(30,120,180,0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(10,80,120,0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 10%, rgba(60,180,220,0.08) 0%, transparent 50%);
    background-attachment: fixed;
    --accent: #1a8fe0;
    --accent-hover: #1580cc;
    --badge-bg: #1a8fe0;
    --success: #1db9b0;
}

body.theme-oceano::before {
    background:
        linear-gradient(to bottom, rgba(0,0,0,0.5), rgba(0,0,0,0.7)),
        radial-gradient(ellipse at 30% 60%, #0a4a6a 0%, #062a40 35%, #031520 100%);
}

body.theme-oceano .btn-primary {
    box-shadow: 0 8px 20px rgba(26, 143, 224, 0.3);
}

body.theme-oceano .btn-primary:hover {
    box-shadow: 0 12px 25px rgba(26, 143, 224, 0.4);
}

/* ─── Playa ─── */
body.theme-playa {
    background:
        radial-gradient(ellipse at 40% 20%, rgba(80,200,220,0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 80%, rgba(60,160,180,0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 20% 90%, rgba(200,180,140,0.08) 0%, transparent 40%);
    background-attachment: fixed;
    --accent: #1a9eb5;
    --accent-hover: #158a9e;
    --badge-bg: #1a9eb5;
    --success: #2ed573;
}

body.theme-playa::before {
    background:
        linear-gradient(to bottom, rgba(0,0,0,0.45), rgba(0,0,0,0.6)),
        radial-gradient(ellipse at 60% 30%, #4a9eb5 0%, #2a7a8a 30%, #1a5a6a 60%, #0a2a3a 100%);
}

body.theme-playa .btn-primary {
    box-shadow: 0 8px 20px rgba(26, 158, 181, 0.3);
}

body.theme-playa .btn-primary:hover {
    box-shadow: 0 12px 25px rgba(26, 158, 181, 0.4);
}

/* ─── Hub Hero CTA ─── */
.hub-hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 1.5rem 1.2rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, rgba(128, 128, 128, 0.08), rgba(128, 128, 128, 0.04));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.hub-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 20% 50%, rgba(128, 128, 128, 0.06), transparent 60%);
    pointer-events: none;
}

.hub-hero-text {
    flex: 1;
    min-width: 0;
}

.hub-hero-text h2 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.hub-hero-text p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
}

.btn-create-hero {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: #fff;
    border: none;
    padding: 0.9rem 1.8rem;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    transition: all var(--transition);
    white-space: nowrap;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    flex-shrink: 0;
}

.btn-create-hero:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.btn-create-hero:active {
    transform: translateY(0) scale(0.98);
}

@media (max-width: 600px) {
    .hub-hero {
        flex-direction: column;
        text-align: center;
        padding: 1.2rem;
    }
    .hub-hero-text h2 {
        justify-content: center;
    }
    .btn-create-hero {
        width: 100%;
        justify-content: center;
    }
}

/* ─── Hub Search ─── */
.hub-search {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0 0 0.5rem;
    border-bottom: 1px solid var(--divider);
    margin-bottom: 0;
}

.hub-search i {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.hub-search input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 0.95rem;
    outline: none;
    padding: 0.3rem 0;
}

.hub-search input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.hub-count {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

/* ─── Hub Grid ─── */
.hub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
    padding-top: 1rem;
    min-height: 150px;
}

.hub-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.hub-card:hover {
    background: var(--card-hover);
    border-color: var(--accent);
    transform: translateY(-2px);
}

.hub-card-head {
    min-width: 0;
}

.hub-card-title {
    font-weight: 700;
    font-size: 1.05rem;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hub-card-artist {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.15rem;
}

.hub-card-tags {
    display: flex;
    gap: 0.3rem;
    flex-wrap: wrap;
}

.hub-card-actions {
    display: flex;
    gap: 0.4rem;
    margin-top: auto;
    padding-top: 0.4rem;
    border-top: 1px solid var(--divider);
}

.hub-card-actions .btn {
    flex: 1;
    justify-content: center;
    padding: 0.4rem;
    font-size: 0.78rem;
}

/* ─── Like Button ─── */
.hub-like-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    padding: 0.4rem 0.7rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font-family);
    font-size: 0.8rem;
    font-weight: 600;
    transition: all var(--transition);
}

.hub-like-btn:hover {
    border-color: var(--danger);
    color: var(--danger);
}

.hub-like-btn.liked {
    border-color: var(--danger);
    color: var(--danger);
    background: rgba(255, 71, 87, 0.08);
}

.hub-like-btn i {
    font-size: 0.85rem;
}

.hub-like-btn.liked i {
    animation: heartPop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes heartPop {
    0% { transform: scale(1); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

/* ─── Detail Modal ─── */
.detail-body {
    padding-top: 1rem;
    overflow-y: auto;
    max-height: 60vh;
}

.detail-info {
    margin-bottom: 1rem;
}

.detail-artist {
    font-size: 1rem;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 0.4rem;
}

.detail-tags {
    display: flex;
    gap: 0.3rem;
    flex-wrap: wrap;
}

.detail-chords {
    margin-bottom: 1rem;
}

.detail-chords h4,
.detail-lyrics h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.6rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.detail-chord-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.detail-chord-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
}

.detail-chord-name {
    font-weight: 700;
    font-size: 0.9rem;
}

.detail-lyrics pre {
    background: var(--input-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 0.8rem;
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-primary);
    white-space: pre-wrap;
    overflow-x: auto;
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
    body {
        padding: 0.5rem 0;
    }

    .app-wrapper {
        padding: 0 0.5rem;
    }

    .glass-panel {
        padding: 1.2rem;
        border-radius: var(--radius-lg);
    }

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

    .playback-controls, .settings-controls {
        justify-content: center;
    }

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

    .metadata-small {
        flex: 1;
    }

    .modal {
        max-height: 90vh;
        padding: 1rem;
    }

    .library-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 480px) {
    .settings-controls .btn span.btn-badge {
        display: none;
    }

    header {
        flex-direction: column;
        align-items: flex-start;
    }

    h1 {
        font-size: 1.4rem;
    }
}