/* Chord Diagram Styles */
.chord-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    margin: 20px auto;
    max-width: 1200px;
}

/* Grid layout variant (used in index.html) */
.chord-container.grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin: 20px auto;
    max-width: 1400px;
    padding: 0 20px;
}

/* Flexbox layout variant (used in chord.html) */
.chord-container.flex-layout {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    margin: 20px auto;
    max-width: 1200px;
}

.chord-diagram {
    background: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.chord-name {
    text-align: center;
    font-size: 16px;
    font-weight: bold;
    margin: 0 0 10px 0;
}

/* Progression View Styles */
.chord-container.progression-view {
    flex-direction: column;
    gap: 40px;
}

.chord-group {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.chord-group h3 {
    text-align: center;
    color: #333;
    margin: 0 0 15px 0;
    font-size: 18px;
}

.chord-group-chords {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.chord-group.primary-group {
    border-left: 4px solid #4CAF50;
}

.chord-group.secondary-group {
    border-left: 4px solid #FF9800;
}

.chord-diagram.progression-chord {
    position: relative;
    transition: transform 0.2s ease;
}

.chord-diagram.progression-chord:hover {
    transform: scale(1.05);
}

.chord-diagram.progression-chord .chord-function {
    position: absolute;
    top: 5px;
    right: 5px;
    background: #4CAF50;
    color: white;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 11px;
    font-weight: bold;
}

.chord-diagram.progression-chord.major .chord-function {
    background: #4CAF50;
}

.chord-diagram.progression-chord.minor .chord-function {
    background: #2196F3;
}

.chord-diagram.progression-chord.7th .chord-function {
    background: #9C27B0;
}

/* Highlighting for progressions */
.chord-diagram.highlighted {
    border: 3px solid #4CAF50;
    box-shadow: 0 4px 8px rgba(76, 175, 80, 0.3);
    transform: scale(1.05);
}

.chord-diagram.dimmed {
    opacity: 0.3;
    filter: grayscale(50%);
}

/* Progression Examples */
.progression-examples {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-top: 20px;
}

.progression-examples h3 {
    text-align: center;
    color: #333;
    margin: 0 0 15px 0;
}

.progression-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.progression-item {
    background: #f5f5f5;
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.2s ease;
    border: 2px solid transparent;
}

.progression-item:hover {
    background: #e8f5e9;
    border-color: #4CAF50;
}

/* SVG Chord Diagram Styles */
/* SVG rendering styles are applied via JavaScript */