:root {
    --bg-color: #0d1322;
    --bg-secondary: #162032;
    --bg-tertiary: #223048;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --chord-color: #38bdf8;
    --border-color: #1e2e46;
    --border-radius: 8px;
    --transition: all 0.2s ease;
    --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Roboto Mono', 'SF Mono', Monaco, Menlo, Consolas, monospace;
}

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

body {
    font-family: var(--font-ui);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

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

/* Layout */
.container {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 16px;
}

.navbar {
    background-color: rgba(22, 32, 50, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 56px;
}

.logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.02em;
}

.logo:hover {
    color: var(--chord-color);
}

.nav-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.search-form {
    display: flex;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.search-input {
    background: transparent;
    border: none;
    color: var(--text-main);
    padding: 6px 12px;
    outline: none;
    font-size: 0.88rem;
    width: 140px;
    transition: width 0.2s;
}

.search-input:focus {
    width: 180px;
}

.content {
    padding: 16px 16px 60px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 14px;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 0.88rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-sm {
    padding: 4px 10px;
    font-size: 0.82rem;
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    color: #fff;
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--border-color);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--text-main);
}

.btn-icon {
    padding: 4px 8px;
    min-width: 32px;
}

.back-link {
    color: var(--text-muted);
    font-size: 0.85rem;
    display: inline-block;
}
.back-link:hover {
    color: var(--accent);
}

/* Song View Layout */
.song-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.song-title-wrap {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.song-title {
    font-size: 1.45rem;
    font-weight: 700;
    line-height: 1.2;
}

/* Controls Bar */
.controls-bar {
    background: var(--bg-secondary);
    padding: 8px 14px;
    border-radius: var(--border-radius);
    margin-bottom: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--border-color);
    gap: 12px;
    flex-wrap: wrap;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.speed-slider-wrap {
    display: flex;
    align-items: center;
    gap: 6px;
}

.speed-slider-wrap input[type="range"] {
    width: 90px;
    accent-color: var(--accent);
    cursor: pointer;
}

/* Dense Chord Sheet Display */
.song-content {
    background: var(--bg-secondary);
    padding: 18px 20px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    font-family: var(--font-mono);
    font-size: 0.95rem; /* Base readable font */
    overflow-x: auto;
    letter-spacing: -0.01em;
}

.lyrics-container {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.line {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    margin: 0;
    padding: 0;
    line-height: 1.2;
}

/* Plain lyrics line (e.g. without chords) */
.line.line-plain {
    min-height: 1.25em;
    margin-bottom: 3px;
}

.line.line-plain .lyric {
    font-weight: 400;
}

/* Line with chords */
.line.line-chords {
    margin-bottom: 4px;
    min-height: 2.25em;
}

/* Empty line between stanzas */
.line.line-empty {
    height: 14px;
    min-height: 14px;
    width: 100%;
}

.chord-block {
    display: inline-flex;
    flex-direction: column;
    justify-content: flex-end;
    vertical-align: bottom;
}

.chord {
    display: block;
    height: 1.15em;
    line-height: 1.15em;
    font-weight: 700;
    font-size: 0.88em;
    color: var(--chord-color);
    white-space: pre;
    user-select: none;
}

.chord:empty {
    visibility: hidden;
}

.lyric {
    display: block;
    line-height: 1.2em;
    white-space: pre;
    color: var(--text-main);
}

/* Cards & Lists */
.artist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 12px;
}

.artist-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 16px 14px;
    text-align: center;
    display: block;
    color: var(--text-main);
}

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

.artist-card h3 {
    margin-bottom: 4px;
    font-size: 1.05rem;
}

.song-count {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.song-list {
    list-style: none;
}

.song-item {
    margin-bottom: 8px;
}

.song-item a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.song-item a:hover {
    border-color: var(--accent);
    background: var(--bg-tertiary);
}

.song-title {
    font-weight: 500;
}

.song-artist {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Forms */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-main);
    font-family: var(--font-ui);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
}

.help-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.help-text code {
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--chord-color);
    font-family: var(--font-mono);
}

.lyrics-textarea {
    min-height: 350px;
    font-family: var(--font-mono);
    font-size: 0.95rem;
    line-height: 1.4;
    resize: vertical;
}

.empty-state {
    text-align: center;
    padding: 40px 16px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px dashed var(--border-color);
}

.empty-state p {
    color: var(--text-muted);
    margin-bottom: 14px;
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .container {
        padding: 0 10px;
    }
    .content {
        padding: 10px 10px 40px;
    }
    .nav-content {
        height: auto;
        padding: 10px 0;
        gap: 8px;
        flex-wrap: wrap;
    }
    .search-input {
        width: 110px;
    }
    .search-input:focus {
        width: 130px;
    }
    .song-header {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
    }
    .song-content {
        padding: 12px 10px;
        font-size: 0.88rem; /* slightly tighter on small mobile screens */
    }
    .controls-bar {
        padding: 6px 10px;
        justify-content: space-between;
    }
    .speed-slider-wrap input[type="range"] {
        width: 65px;
    }
}