:root {
    --primary-color: #8b5cf6;
    --primary-dark: #6d28d9;
    --primary-light: #a78bfa;
    --secondary-color: #c084fc;
    --background: #faf5ff;
    --card-background: #ffffff;
    --text-primary: #2d1b3d;
    --text-secondary: #6b7280;
    --border-color: #e9d5ff;
    --error-color: #ef4444;
    --shadow: 0 2px 8px rgba(139, 92, 246, 0.1);
    --shadow-hover: 0 4px 12px rgba(139, 92, 246, 0.2);
}

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

body {
    font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

h1 {
    font-family: 'Pompiere', cursive;
    font-size: 2.5rem;
    color: var(--text-primary);
    font-weight: 400;
    letter-spacing: 0.5px;
}

h2 {
    font-family: 'Pompiere', cursive;
    font-size: 1.75rem;
    font-weight: 400;
    letter-spacing: 0.3px;
}

.settings-btn {
    background: var(--card-background);
    border: 2px solid var(--border-color);
    cursor: pointer;
    color: var(--primary-color);
    padding: 10px;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.settings-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: rotate(90deg);
    box-shadow: var(--shadow-hover);
}

.settings-btn svg {
    width: 20px;
    height: 20px;
}

.search-section {
    background: var(--card-background);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.search-section label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--text-primary);
}

.input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

#chordInput {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

#chordInput:focus {
    outline: none;
    border-color: var(--primary-color);
}

#searchBtn {
    padding: 12px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

#searchBtn:hover {
    background: var(--primary-dark);
}

#searchBtn:active {
    transform: scale(0.98);
}

.suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.suggestion-chip {
    padding: 6px 12px;
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.suggestion-chip:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.results-section {
    margin-top: 30px;
}

.results-section h2 {
    margin-bottom: 20px;
    color: var(--text-primary);
}

.alternatives-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.chord-card {
    background: var(--card-background);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.chord-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.chord-card-header {
    margin-bottom: 15px;
}

.chord-name {
    font-family: 'Pompiere', cursive;
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--primary-color);
    letter-spacing: 0.5px;
}

.chord-diagram-container {
    margin: 15px 0;
    display: flex;
    justify-content: center;
}

.play-chord-btn {
    width: auto;
    padding: 6px 12px;
    margin: 10px auto 0;
    background: transparent;
    color: var(--primary-color);
    border: 1.5px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all 0.2s ease;
    font-family: 'Open Sans', sans-serif;
}

.play-chord-btn:hover:not(:disabled) {
    border-color: var(--primary-color);
    background: rgba(139, 92, 246, 0.05);
    color: var(--primary-dark);
}

.play-chord-btn:active:not(:disabled) {
    transform: scale(0.98);
}

.play-chord-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.play-chord-btn.playing {
    border-color: var(--primary-color);
    background: rgba(139, 92, 246, 0.1);
    color: var(--primary-dark);
}

.play-chord-btn svg {
    width: 14px;
    height: 14px;
}

.tab-notation {
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 10px;
    text-align: center;
    white-space: pre;
}

.error-message {
    background: #fee;
    border: 1px solid var(--error-color);
    color: var(--error-color);
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: var(--card-background);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

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

.modal-body {
    padding: 20px;
}

.setting-item {
    margin-bottom: 20px;
}

.setting-item label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 1rem;
}

.setting-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    h1 {
        font-size: 1.5rem;
    }

    .search-section {
        padding: 20px;
    }

    .input-group {
        flex-direction: column;
    }

    #searchBtn {
        width: 100%;
    }

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

    .chord-card {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.25rem;
    }

    .search-section {
        padding: 15px;
    }
}