/* Dark Theme Variables - Enhanced */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #121212;
    --bg-tertiary: #1e1e1e;
    --bg-quaternary: #2a2a2a;
    --bg-hover: #2c2c2c;
    --text-primary: #e8e8e8;
    --text-secondary: #a8a8a8;
    --text-muted: #6e6e6e;
    --border-color: #2e2e2e;
    --border-color-light: #3a3a3a;
    --accent-primary: #4f9eff;
    --accent-hover: #70b0ff;
    --accent-gradient-start: #4f9eff;
    --accent-gradient-end: #7c3aed;
    --success-bg: #1a2a1a;
    --success-text: #6fbf4c;
    --error-bg: #2a1a1a;
    --error-text: #ff6b6b;
    --info-bg: #1a2a3a;
    --info-text: #5ca8ff;
    --log-bg: #0c0f1a;
    --log-text: #4eff9e;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', Roboto, sans-serif;
    background: radial-gradient(circle at 10% 20%, #121220 0%, #05050a 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.5;
    margin: 0;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

/* Container */
.container {
    background: rgba(18, 18, 24, 0.85);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    padding: 28px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    margin-top: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

h1 {
    font-size: 2.2rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 100%);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    text-align: center;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.subtitle {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 32px;
    font-size: 1rem;
}

/* MIDI Section */
.midi-section {
    background: var(--bg-tertiary);
    border-radius: 20px;
    padding: 20px;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--accent-gradient-start) 0%, var(--accent-gradient-end) 100%);
    color: white;
    border: none;
    border-radius: 40px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.2, 0.9, 0.4, 1.1);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(79, 158, 255, 0.4);
}

.btn:disabled {
    background: #3a3a3a;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    background: linear-gradient(135deg, #2ecc71 0%, #219a52 100%);
    margin-left: 12px;
}

/* Status Boxes */
.status-box {
    margin-top: 20px;
    padding: 14px 18px;
    border-radius: 14px;
    font-family: monospace;
    font-size: 13px;
    line-height: 1.6;
}

.status-success {
    background: linear-gradient(135deg, #1a3a1a 0%, #0f2a0f 100%);
    color: var(--success-text);
    border-left: 4px solid var(--success-text);
}

.status-error {
    background: linear-gradient(135deg, #3a1a1a 0%, #2a0f0f 100%);
    color: var(--error-text);
    border-left: 4px solid var(--error-text);
}

.status-info {
    background: linear-gradient(135deg, #1a2a3a 0%, #0f1f2a 100%);
    color: var(--info-text);
    border-left: 4px solid var(--info-text);
}

/* Scale Section */
#scale-section h2 {
    margin-bottom: 10px;
    font-size: 1.5rem;
}

#scale-section p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* Scale Slots - STACKABLE LAYOUT (Vertical) */
.scale-slot {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin: 24px 0;
}

/* Each scale slot item - stacks vertically */
.scale-slot-item {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 18px;
    padding: 20px;
    transition: all 0.2s ease;
    width: 100%;
}

.scale-slot-item.active {
    border-color: var(--accent-primary);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(79, 158, 255, 0.08) 100%);
    box-shadow: 0 0 0 1px rgba(79, 158, 255, 0.2);
}

/* Dropdown menus - NO OVERFLOW, properly contained */
select {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    font-weight: 500;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    background-color: var(--bg-quaternary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
    /* Critical overflow fixes */
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Target ALL dynamically generated dropdowns */
select.category-dropdown,
select.scale-dropdown,
select[id^="category-"],
select[id^="scale-"] {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    background-color: var(--bg-quaternary);
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Hover states */
select:hover {
    background-color: var(--bg-hover);
    border-color: var(--accent-primary);
}

select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(79, 158, 255, 0.2);
}

/* Disabled selects */
select:disabled {
    background-color: #242424;
    color: #5a5a5a;
    cursor: not-allowed;
    border-color: #333;
}

/* Dropdown options - no text cutoff */
select option {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 12px;
    white-space: normal;
    word-break: break-word;
}

select optgroup {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    font-weight: 600;
}

select optgroup option {
    padding-left: 24px;
}

/* Scale Info Boxes - Stackable */
.scale-info {
    margin-top: 20px;
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    word-wrap: break-word;
    overflow-wrap: break-word;
    word-break: break-word;
    font-size: 0.9rem;
}

/* Device List */
.device-list {
    margin-top: 15px;
}

.device-item {
    padding: 12px 16px;
    margin: 8px 0;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    color: var(--text-primary);
    transition: all 0.15s;
    cursor: pointer;
}

.device-item:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    transform: translateX(4px);
}

/* Controls - Stackable on mobile */
.controls {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 32px;
    flex-wrap: wrap;
}

/* Hex Display */
.hex-display {
    font-family: monospace;
    background: #0c0c12;
    padding: 12px 16px;
    border-radius: 14px;
    margin-top: 12px;
    font-size: 12px;
    word-break: break-all;
    color: var(--info-text);
    border: 1px solid var(--border-color);
}

/* Log Console */
.log {
    margin-top: 32px;
    background: var(--log-bg);
    color: var(--log-text);
    padding: 18px;
    border-radius: 18px;
    font-family: monospace;
    font-size: 12px;
    max-height: 240px;
    overflow-y: auto;
    border: 1px solid #1e2230;
}

.log-entry {
    margin: 6px 0;
    padding: 4px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.log-time {
    color: var(--text-muted);
    margin-right: 12px;
}

.log-info {
    color: var(--info-text);
}

.log-warn {
    color: #f1c40f;
}

.log-error {
    color: var(--error-text);
}

/* Scale Notes */
.scale-notes {
    margin-top: 14px;
    font-size: 12px;
    color: var(--text-muted);
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
}

/* Responsive - TRUE STACKING (elements on top of each other) */
@media (max-width: 768px) {
    body {
        padding: 12px;
    }
    
    .container {
        padding: 18px;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.85rem;
    }
    
    .btn-secondary {
        margin-left: 0;
        margin-top: 12px;
    }
    
    /* Important: Make selects wrap text on mobile */
    select,
    select.category-dropdown,
    select.scale-dropdown {
        white-space: normal;
        min-height: 50px;
        height: auto;
    }
    
    .controls {
        flex-direction: column;
        gap: 12px;
    }
    
    .controls .btn {
        width: 100%;
        margin: 0;
    }
    
    .scale-slot {
        gap: 18px;
    }
    
    .scale-slot-item {
        padding: 16px;
    }
}

@media (max-width: 480px) {
    .scale-slot-item {
        padding: 14px;
    }
    
    .container {
        padding: 14px;
    }
    
    .midi-section {
        padding: 14px;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color-light);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* Focus visible */
:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 3px;
    border-radius: 4px;
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}