/**
 * SongCraft - Estilos Principales
 * Mobile-first, Tema claro/oscuro
 */

/* === CSS Variables (Tema Claro) === */
:root, [data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-hover: #f0f0f2;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-muted: #a1a1a6;
    --border-color: #d2d2d7;
    --border-light: #e8e8ed;
    --accent: #0071e3;
    --accent-hover: #0077ed;
    --accent-light: #e3f0ff;
    --success: #30d158;
    --error: #ff3b30;
    --warning: #ff9f0a;
    --danger: #ff3b30;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --radius: 10px;
    --radius-sm: 6px;
    --radius-lg: 16px;
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    --navbar-bg: rgba(255,255,255,0.85);
    --chord-color: #0071e3;
    --chord-bg: #e3f0ff;
    --section-color: #8e8e93;
}

/* === Tema Oscuro === */
[data-theme="dark"] {
    --bg-primary: #1c1c1e;
    --bg-secondary: #2c2c2e;
    --bg-card: #2c2c2e;
    --bg-input: #3a3a3c;
    --bg-hover: #3a3a3c;
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1a6;
    --text-muted: #6e6e73;
    --border-color: #48484a;
    --border-light: #3a3a3c;
    --accent: #64d2ff;
    --accent-hover: #5ac8f5;
    --accent-light: #1a3a4a;
    --success: #30d158;
    --error: #ff453a;
    --warning: #ffd60a;
    --danger: #ff453a;
    --shadow: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --navbar-bg: rgba(28,28,30,0.9);
    --chord-color: #64d2ff;
    --chord-bg: #1a3a4a;
    --section-color: #a1a1a6;
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* === Container === */
.container { max-width: 1200px; margin: 0 auto; padding: 20px 16px; }
@media (max-width: 480px) {
    .container { padding: 14px 12px; }
}

/* === Navbar === */
.navbar {
    position: sticky; top: 0; z-index: 100;
    background: var(--navbar-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    padding: 0 16px;
}
.navbar-container {
    max-width: 1400px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    height: 52px;
}
.navbar-brand {
    font-size: 1.3rem; font-weight: 700; color: var(--text-primary);
    display: flex; align-items: center; gap: 6px;
}
.brand-icon { font-size: 1.5rem; color: var(--accent); }
.navbar-menu {
    display: flex; align-items: center; gap: 4px;
}
.nav-link {
    padding: 6px 14px; border-radius: var(--radius-sm);
    color: var(--text-secondary); font-size: 0.9rem; font-weight: 500;
    transition: all 0.2s;
}
.nav-link:hover, .nav-link.active {
    color: var(--text-primary); background: var(--bg-hover);
}
.nav-right { display: flex; align-items: center; gap: 8px; margin-left: 12px; }
.nav-user { font-size: 0.85rem; color: var(--text-secondary); }
.btn-icon {
    background: none; border: none; cursor: pointer;
    padding: 6px 8px; border-radius: var(--radius-sm);
    color: var(--text-secondary); font-size: 1.1rem;
    transition: all 0.2s;
}
.btn-icon:hover { background: var(--bg-hover); color: var(--text-primary); }
.btn-icon.active { background: var(--accent-light); color: var(--accent); }

/* Offline Indicators */
.offline-indicator {
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all 0.2s;
}
.offline-indicator.online {
    color: var(--success);
    background: rgba(48, 209, 88, 0.1);
}
.offline-indicator.offline {
    color: var(--warning);
    background: rgba(255, 159, 10, 0.1);
}
.offline-sync-indicator {
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    color: var(--accent);
    background: var(--accent-light);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Mobile nav toggle */
.navbar-toggle {
    display: none; background: none; border: none;
    cursor: pointer; padding: 10px; flex-direction: column; gap: 5px;
    -webkit-tap-highlight-color: transparent;
}
.navbar-toggle span {
    display: block; width: 22px; height: 2px; background: var(--text-primary);
    transition: all 0.3s; border-radius: 1px;
}
.navbar-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.navbar-toggle.active span:nth-child(2) { opacity: 0; }
.navbar-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 768px) {
    .navbar-toggle { display: flex; }
    .navbar-menu {
        display: none; position: absolute; top: 52px; left: 0; right: 0;
        background: var(--bg-primary); border-bottom: 1px solid var(--border-light);
        flex-direction: column; padding: 12px 16px; gap: 2px;
        box-shadow: 0 8px 24px rgba(0,0,0,0.12);
        animation: navSlideIn 0.2s ease-out;
    }
    @keyframes navSlideIn {
        from { opacity: 0; transform: translateY(-8px); }
        to { opacity: 1; transform: translateY(0); }
    }
    .navbar-menu.active { display: flex; }
    .navbar-menu .nav-link {
        padding: 12px 16px; border-radius: var(--radius-sm);
        font-size: 1rem; min-height: 44px; display: flex; align-items: center;
    }
    .nav-right {
        margin-left: 0; justify-content: center; padding-top: 10px;
        border-top: 1px solid var(--border-light); margin-top: 4px;
    }
}

/* === Buttons === */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 10px 20px; border-radius: var(--radius-sm);
    font-size: 0.9rem; font-weight: 600; border: none; cursor: pointer;
    transition: all 0.2s; text-decoration: none;
    -webkit-tap-highlight-color: transparent; touch-action: manipulation;
    min-height: 40px;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); color: #fff; }
.btn-secondary { background: var(--bg-hover); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: var(--border-light); }
.btn-accent { background: var(--success); color: #fff; }
.btn-accent:hover { opacity: 0.9; color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.9; }
.btn-block { width: 100%; }
.btn-sm {
    display: inline-flex; align-items: center; padding: 6px 12px; font-size: 0.8rem;
    border-radius: var(--radius-sm); cursor: pointer; border: 1px solid var(--border-color);
    background: var(--bg-card); color: var(--text-primary); text-decoration: none;
    transition: all 0.2s; min-height: 34px; -webkit-tap-highlight-color: transparent;
}
.btn-sm:hover { background: var(--bg-hover); }
.btn-danger-sm { color: var(--danger); border-color: var(--danger); }
.btn-danger-sm:hover { background: var(--danger); color: #fff; }

/* === Forms === */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 4px; color: var(--text-secondary); }
.form-control {
    width: 100%; padding: 10px 14px; border-radius: var(--radius-sm);
    border: 1px solid var(--border-color); background: var(--bg-input);
    color: var(--text-primary); font-size: 0.95rem; font-family: var(--font-main);
    transition: border-color 0.2s;
}
.form-control:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-light); }
.form-control-sm { padding: 6px 10px; font-size: 0.85rem; }
textarea.form-control { resize: vertical; }
.font-mono { font-family: var(--font-mono); font-size: 0.9rem; }
.select-multi { min-height: 80px; }
@media (max-width: 480px) {
    .select-multi { min-height: 60px; }
}
.mt-1 { margin-top: 6px; }
.mt-2 { margin-top: 16px; }
.form-row { display: grid; gap: 16px; }
.form-row-2 { grid-template-columns: 1fr 1fr; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 768px) { .form-row-2, .form-row-3 { grid-template-columns: 1fr; } }
.form-actions { display: flex; gap: 12px; margin-top: 20px; justify-content: flex-end; flex-wrap: wrap; }
.checkbox-label { display: flex; align-items: center; gap: 8px; cursor: pointer; font-weight: 400; }
.form-group-lg .form-control { font-size: 1.2rem; padding: 12px 16px; }
@media (max-width: 480px) {
    .form-actions { justify-content: stretch; }
    .form-actions .btn { flex: 1; min-width: 0; text-align: center; justify-content: center; }
}

/* === Cards === */
.card {
    background: var(--bg-card); border-radius: var(--radius);
    border: 1px solid var(--border-light); padding: 24px;
    box-shadow: var(--shadow);
}
.form-card { max-width: 900px; margin: 0 auto; }

/* === Alerts === */
.alert {
    padding: 12px 20px; border-radius: var(--radius-sm);
    margin: 12px 16px; font-size: 0.9rem; position: relative;
    display: flex; justify-content: space-between; align-items: center;
    max-width: 1200px; margin-left: auto; margin-right: auto;
    transition: opacity 0.3s;
}
.alert-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.alert-error { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
[data-theme="dark"] .alert-success { background: #1a3a1a; color: #a3d9a5; border-color: #2a4a2a; }
[data-theme="dark"] .alert-error { background: #3a1a1a; color: #d9a3a3; border-color: #4a2a2a; }
.alert-close { background: none; border: none; font-size: 1.2rem; cursor: pointer; color: inherit; padding: 0 4px; }

/* === Page Header === */
.page-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 24px; flex-wrap: wrap; gap: 12px;
}
.page-header h1 { font-size: 1.6rem; font-weight: 700; }
.page-actions { display: flex; gap: 8px; flex-wrap: wrap; }
@media (max-width: 480px) {
    .page-header { flex-direction: column; align-items: flex-start; gap: 10px; }
    .page-header h1 { font-size: 1.35rem; }
    .page-actions { width: 100%; }
    .page-actions .btn { flex: 1; text-align: center; justify-content: center; font-size: 0.82rem; padding: 8px 12px; }
}

/* === Data Tables === */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
    text-align: left; padding: 10px 14px; font-size: 0.8rem;
    color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-light);
}
.data-table td {
    padding: 12px 14px; border-bottom: 1px solid var(--border-light);
    font-size: 0.9rem;
}
.data-table tr:hover { background: var(--bg-hover); }
.actions-cell { white-space: nowrap; display: flex; gap: 4px; }

/* Responsive table - card layout on mobile */
@media (max-width: 640px) {
    .data-table, .data-table thead, .data-table tbody,
    .data-table th, .data-table td, .data-table tr {
        display: block;
    }
    .data-table thead { display: none; }
    .data-table tr {
        background: var(--bg-card); border-radius: var(--radius-sm);
        border: 1px solid var(--border-light);
        padding: 12px 14px; margin-bottom: 8px;
        position: relative;
    }
    .data-table td {
        border-bottom: none; padding: 2px 0;
        text-align: left; font-size: 0.9rem;
    }
    .data-table td::before {
        content: attr(data-label);
        font-size: 0.7rem; font-weight: 600; color: var(--text-muted);
        text-transform: uppercase; letter-spacing: 0.3px;
        display: block; margin-bottom: 1px;
    }
    .data-table td:first-child { font-size: 1rem; font-weight: 600; padding-bottom: 4px; }
    .data-table td:first-child::before { display: none; }
    .data-table .actions-cell {
        padding-top: 8px; margin-top: 6px;
        border-top: 1px solid var(--border-light);
        justify-content: flex-start; gap: 8px;
    }
    .data-table .actions-cell::before { display: none; }
    .data-table .actions-cell .btn-sm { min-height: 36px; padding: 6px 14px; }
}

/* === Search Panel === */
.search-panel { margin-bottom: 24px; }
.search-bar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.search-input { flex: 1; min-width: 200px; font-size: 1rem; padding: 12px 16px; min-height: 48px; }
.view-toggles { display: flex; gap: 2px; }
.filters-panel { margin-top: 16px; }
.filters-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
@media (max-width: 480px) {
    .search-bar { gap: 8px; }
    .search-input { min-width: 0; flex-basis: 100%; font-size: 1rem; padding: 12px 14px; }
    .search-bar .btn { flex: 1; }
    .view-toggles { margin-left: auto; }
    .filters-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
}

/* === Mobile Song List === */
.mobile-song-list { display: flex; flex-direction: column; gap: 6px; }
.mobile-song-item {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 14px; background: var(--bg-card);
    border: 1px solid var(--border-light); border-radius: var(--radius-sm);
    text-decoration: none; color: var(--text-primary);
    transition: background 0.15s; -webkit-tap-highlight-color: transparent;
}
.mobile-song-item:hover, .mobile-song-item:active { background: var(--bg-hover); color: var(--text-primary); }
.mobile-song-main { flex: 1; min-width: 0; }
.mobile-song-title { font-weight: 600; font-size: 0.95rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mobile-song-artist { font-size: 0.8rem; color: var(--text-secondary); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mobile-song-right { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; flex-shrink: 0; }
.mobile-song-actions { display: flex; gap: 6px; }
.mobile-action-btn { min-height: 32px !important; min-width: 32px !important; justify-content: center !important; padding: 0 !important; font-size: 0.9rem !important; }

/* === Song List & Grid === */
.song-title-link { font-weight: 600; color: var(--text-primary); }
.song-title-link:hover { color: var(--accent); }

.songs-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
@media (max-width: 480px) {
    .songs-grid { grid-template-columns: 1fr; gap: 10px; }
    .song-card { padding: 14px; }
}
.song-card {
    display: block; background: var(--bg-card); border-radius: var(--radius);
    padding: 20px; border: 1px solid var(--border-light);
    transition: all 0.2s; text-decoration: none; color: var(--text-primary);
}
.song-card:hover { box-shadow: var(--shadow-md); border-color: var(--accent); transform: translateY(-2px); color: var(--text-primary); }
.song-card-title { font-size: 1.05rem; font-weight: 600; margin-bottom: 4px; }
.song-card-artist { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 10px; }
.song-card-meta { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
.song-card-actions { display: flex; gap: 6px; }

/* === Badges === */
.meta-badge {
    display: inline-block; padding: 2px 10px; border-radius: 20px;
    font-size: 0.75rem; font-weight: 600; background: var(--accent-light);
    color: var(--accent);
}
.meta-badge-sm { font-size: 0.7rem; padding: 1px 6px; }
.tag-badge {
    display: inline-block; padding: 3px 10px; border-radius: 20px;
    font-size: 0.75rem; background: var(--bg-hover); color: var(--text-secondary);
    margin: 2px;
}
.tag-badge-accent { background: var(--accent-light); color: var(--accent); }
.badge-count { font-size: 0.75rem; color: var(--text-muted); margin-left: 4px; }
.badge-active { color: var(--success); font-weight: 600; font-size: 0.8rem; }
.badge-inactive { color: var(--text-muted); font-size: 0.8rem; }
.role-badge { padding: 2px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; }
.role-admin { background: #ffe0e0; color: #cc0000; }
.role-editor { background: #e0f0ff; color: #0066cc; }
.role-musician { background: #e0ffe0; color: #006600; }
[data-theme="dark"] .role-admin { background: #3a1a1a; color: #ff6b6b; }
[data-theme="dark"] .role-editor { background: #1a2a3a; color: #6bb5ff; }
[data-theme="dark"] .role-musician { background: #1a3a1a; color: #6bff6b; }

/* === Song Detail === */
.song-detail-grid { display: grid; grid-template-columns: 1fr 320px; gap: 24px; }
@media (max-width: 900px) { .song-detail-grid { grid-template-columns: 1fr; } }
.song-artists { font-size: 1rem; color: var(--text-secondary); margin-top: 4px; }
.song-meta-bar { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.song-content-card { overflow: auto; }
.lyrics-text { font-family: var(--font-mono); font-size: 0.95rem; white-space: pre-wrap; line-height: 1.8; }
.song-taxonomies { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border-light); }
.song-notes { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border-light); color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
@media (max-width: 480px) {
    .card { padding: 16px; }
    .song-content-card { padding: 12px; }
    .lyrics-text { font-size: 0.85rem; line-height: 1.7; }
}

/* === Versions === */
.versions-list { display: flex; flex-direction: column; gap: 8px; }
.version-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px 12px; border-radius: var(--radius-sm);
    border: 1px solid var(--border-light); gap: 8px;
}
.version-current { border-color: var(--accent); background: var(--accent-light); }
.version-info { display: flex; flex-direction: column; gap: 2px; font-size: 0.85rem; min-width: 0; }
.version-actions { display: flex; gap: 4px; flex-shrink: 0; }
@media (max-width: 480px) {
    .version-item { flex-direction: column; align-items: flex-start; gap: 6px; }
    .version-actions { width: 100%; gap: 6px; }
    .version-actions .btn-sm { flex: 1; justify-content: center; min-height: 36px; }
}

/* === History === */
.history-list { display: flex; flex-direction: column; gap: 6px; }
.history-item { font-size: 0.8rem; padding: 6px 0; border-bottom: 1px solid var(--border-light); }
.history-date { color: var(--text-muted); display: block; }
.history-action { color: var(--text-secondary); }

/* === Stats === */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card {
    background: var(--bg-card); border-radius: var(--radius); padding: 20px;
    border: 1px solid var(--border-light); text-align: center;
}
.stat-number { font-size: 2rem; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 0.85rem; color: var(--text-secondary); margin-top: 4px; }
.stat-link { font-size: 0.8rem; display: inline-block; margin-top: 8px; }
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 20px; }
    .stat-card { padding: 14px; }
    .stat-number { font-size: 1.6rem; }
    .stat-label { font-size: 0.78rem; }
}

/* === Admin Nav === */
.admin-nav-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.admin-nav-card {
    display: block; background: var(--bg-card); border-radius: var(--radius);
    padding: 24px; border: 1px solid var(--border-light); text-decoration: none;
    color: var(--text-primary); transition: all 0.2s; text-align: center;
}
.admin-nav-card:hover { box-shadow: var(--shadow-md); border-color: var(--accent); transform: translateY(-2px); color: var(--text-primary); }
.admin-nav-icon { font-size: 2rem; display: block; margin-bottom: 8px; }
.admin-nav-card h3 { margin-bottom: 4px; }
.admin-nav-card p { font-size: 0.85rem; color: var(--text-secondary); }
@media (max-width: 480px) {
    .admin-nav-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .admin-nav-card { padding: 16px; }
    .admin-nav-icon { font-size: 1.6rem; margin-bottom: 4px; }
    .admin-nav-card h3 { font-size: 0.9rem; }
    .admin-nav-card p { font-size: 0.75rem; }
}

/* === Modals === */
.modal-overlay {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5); z-index: 200;
    display: flex; align-items: center; justify-content: center;
    padding: 20px;
}
.modal-content {
    background: var(--bg-card); border-radius: var(--radius-lg);
    padding: 24px; max-width: 500px; width: 100%;
    box-shadow: var(--shadow-md); max-height: 90vh; overflow-y: auto;
}
.modal-sm { max-width: 400px; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.modal-header h3 { font-size: 1.2rem; }
.modal-close { background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--text-muted); min-width: 44px; min-height: 44px; display: flex; align-items: center; justify-content: center; }
@media (max-width: 480px) {
    .modal-overlay { padding: 12px; align-items: flex-end; }
    .modal-content { border-radius: var(--radius-lg) var(--radius-lg) 0 0; padding: 20px 16px; max-height: 85vh; }
}

/* === Auth === */
.auth-container { display: flex; align-items: center; justify-content: center; min-height: calc(100vh - 60px); padding: 20px; }
.auth-card {
    background: var(--bg-card); border-radius: var(--radius-lg);
    padding: 40px; max-width: 400px; width: 100%;
    box-shadow: var(--shadow-md); border: 1px solid var(--border-light);
}
.auth-title { text-align: center; font-size: 1.8rem; margin-bottom: 4px; }
.auth-subtitle { text-align: center; color: var(--text-secondary); margin-bottom: 24px; }
.auth-form .form-group { margin-bottom: 16px; }
.auth-footer { text-align: center; margin-top: 20px; font-size: 0.9rem; color: var(--text-secondary); }
@media (max-width: 480px) {
    .auth-container { padding: 16px; align-items: flex-start; padding-top: 40px; }
    .auth-card { padding: 24px 20px; }
    .auth-title { font-size: 1.5rem; }
}

/* === Pagination === */
.pagination { margin-top: 24px; text-align: center; }
.pagination-info { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 8px; }
.pagination-buttons { display: flex; gap: 4px; justify-content: center; flex-wrap: wrap; }

/* === Category Tree === */
.tree-item { padding: 8px 12px; border-bottom: 1px solid var(--border-light); }
.tree-item-content { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tree-icon { color: var(--text-muted); font-size: 0.7rem; flex-shrink: 0; }
.tree-actions { margin-left: auto; display: flex; gap: 4px; flex-shrink: 0; }
@media (max-width: 480px) {
    .tree-item { padding: 10px 8px; }
    .tree-actions .btn-sm { min-height: 34px; padding: 4px 10px; }
}

/* === Tags Cloud === */
.tags-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-item { display: flex; align-items: center; gap: 4px; }
@media (max-width: 480px) {
    .tags-cloud { gap: 6px; }
    .tag-item { gap: 3px; }
    .tag-item .btn-sm { min-height: 30px; min-width: 30px; padding: 0 6px; }
}

/* === Import === */
.import-steps { display: flex; gap: 16px; margin-bottom: 24px; }
.step { padding: 10px 20px; border-radius: var(--radius-sm); background: var(--bg-hover); color: var(--text-muted); font-size: 0.9rem; }
.step-active { background: var(--accent-light); color: var(--accent); font-weight: 600; }
.step-num { font-weight: 700; margin-right: 4px; }
.separator { text-align: center; color: var(--text-muted); margin: 16px 0; position: relative; }
.separator::before, .separator::after { content: ''; position: absolute; top: 50%; width: 40%; height: 1px; background: var(--border-color); }
.separator::before { left: 0; }
.separator::after { right: 0; }
.detected-chords { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
@media (max-width: 480px) {
    .import-steps { gap: 8px; }
    .step { padding: 8px 12px; font-size: 0.8rem; flex: 1; text-align: center; }
}

/* === Loading & Empty States === */
.loading { text-align: center; padding: 40px; color: var(--text-muted); font-size: 0.95rem; }
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); font-size: 1rem; }

/* === Scrollbar === */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* === Utility === */
.main-content { min-height: calc(100vh - 52px); }

/* === Global Mobile Polish === */
@media (max-width: 768px) {
    /* Prevent horizontal overflow on all pages */
    html, body { overflow-x: hidden; }
    
    /* Respect safe areas (notch phones) */
    .navbar { padding-left: max(16px, env(safe-area-inset-left)); padding-right: max(16px, env(safe-area-inset-right)); }
    .container { padding-left: max(12px, env(safe-area-inset-left)); padding-right: max(12px, env(safe-area-inset-right)); }
    
    /* Better touch on all interactive elements */
    button, a.btn, a.btn-sm, .btn-icon, select, input[type="text"], input[type="email"], input[type="password"] {
        -webkit-tap-highlight-color: transparent;
    }
    
    /* Scrollbar barely visible on mobile */
    ::-webkit-scrollbar { width: 4px; }
    
    /* Ensure form controls have adequate size */
    .form-control { min-height: 44px; font-size: 16px; }
    select.form-control { min-height: 44px; }
}