:root {
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --border-color: rgba(255, 255, 255, 0.1);
    --accent-blue: #00e5ff;
    --accent-purple: #8a2be2;
    --accent-green: #10b981;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --chord-bg: rgba(0, 229, 255, 0.15);
    --chord-color: #00e5ff;
    --chord-border: rgba(0, 229, 255, 0.3);
}

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

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: radial-gradient(circle at top right, #1e1b4b 0%, #0f172a 60%, #020617 100%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 30px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

.main-container {
    max-width: 1200px;
    width: 100%;
    margin: 30px auto;
    padding: 0 20px;
    flex: 1;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.search-box-row {
    display: flex;
    gap: 12px;
}

.input-field {
    flex: 1;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px 18px;
    color: #fff;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

.input-field:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 12px rgba(0, 229, 255, 0.25);
}

.btn {
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 12px 24px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 229, 255, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.85rem;
    border-radius: 8px;
}

.results-list {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.song-item {
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.song-item:hover {
    background: rgba(0, 229, 255, 0.08);
    border-color: var(--accent-blue);
    transform: translateX(4px);
}

.song-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
}

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

.song-badge-key {
    background: rgba(138, 43, 226, 0.25);
    border: 1px solid var(--accent-purple);
    color: #e9d5ff;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 700;
}

.lyrics-textarea {
    width: 100%;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 15px;
    color: var(--accent-blue);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    outline: none;
    resize: vertical;
    margin-top: 15px;
}

.hidden {
    display: none !important;
}

.footer {
    border-top: 1px solid var(--border-color);
    padding: 20px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}