/* Playground Styles */
:root {
    /* Beige Color Palette */
    --cream: #FAF7F0;
    --beige-light: #F5EFE6;
    --beige: #E8DCC8;
    --beige-dark: #D4C4A8;
    --brown-light: #A08968;
    --brown: #7D6E57;
    --brown-dark: #5C5346;
    --text-primary: #2C2416;
    --text-secondary: #6B5D4F;
    --accent: #D17B47;
    --accent-hover: #B8643A;
    --success: #8B9F6E;
    --error: #C45D5D;
    --shadow-sm: 0 2px 8px rgba(44, 36, 22, 0.08);
    --shadow-md: 0 4px 20px rgba(44, 36, 22, 0.12);
    --shadow-lg: 0 8px 32px rgba(44, 36, 22, 0.16);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--cream);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Header */
.playground-header {
    background: white;
    border-bottom: 2px solid var(--beige);
    padding: 1rem 2rem;
    box-shadow: var(--shadow-sm);
    z-index: 100;
}

.header-content {
    max-width: 1800px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.logo-link:hover {
    transform: scale(1.02);
}

.logo-image {
    width: 36px;
    height: 36px;
    border-radius: 6px;
}

.logo-text {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
}

.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.back-link:hover {
    background: var(--beige-light);
    color: var(--accent);
}

/* Main Playground Layout */
.playground-main {
    flex: 1;
    display: grid;
    grid-template-columns: 260px 1fr 300px;
    gap: 0;
    overflow: hidden;
    max-width: 1800px;
    margin: 0 auto;
    width: 100%;
}

/* Sidebar */
.examples-sidebar {
    background: white;
    border-right: 2px solid var(--beige);
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.examples-sidebar h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.example-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.example-btn {
    background: var(--beige-light);
    border: 2px solid var(--beige);
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    font-size: 0.9rem;
}

.example-btn:hover {
    background: var(--beige);
    border-color: var(--beige-dark);
}

.example-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.info-panel {
    background: var(--beige-light);
    border: 2px solid var(--beige);
    border-radius: 12px;
    padding: 1.25rem;
}

.info-panel h4 {
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.info-panel p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.info-panel ul {
    list-style: none;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.info-panel ul li {
    padding-left: 1rem;
    position: relative;
    margin-bottom: 0.5rem;
}

.info-panel ul li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}

.api-reference {
    background: var(--text-primary);
    border-radius: 12px;
    padding: 1.25rem;
}

.api-reference h4 {
    font-size: 0.95rem;
    color: var(--cream);
    margin-bottom: 0.75rem;
}

.api-reference code {
    display: block;
    font-family: 'Fira Code', 'Monaco', monospace;
    font-size: 0.8rem;
    color: var(--beige);
    margin-bottom: 0.5rem;
    padding: 0.25rem 0;
}

/* Editor Area */
.editor-area {
    display: flex;
    flex-direction: column;
    background: var(--cream);
    overflow: hidden;
}

.editor-toolbar {
    background: white;
    border-bottom: 2px solid var(--beige);
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.file-name {
    font-family: 'Fira Code', 'Monaco', monospace;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.toolbar-right {
    display: flex;
    gap: 0.75rem;
}

.toolbar-btn {
    background: var(--beige-light);
    border: 2px solid var(--beige);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.toolbar-btn:hover {
    background: var(--beige);
    border-color: var(--beige-dark);
}

.run-btn {
    background: var(--accent);
    border: none;
    color: white;
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.run-btn:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
}

.run-btn.running {
    background: var(--success);
}

/* Code Editor */
.editor-container {
    flex: 1;
    background: var(--text-primary);
    padding: 1.5rem;
    overflow: auto;
    min-height: 300px;
}

#code-editor {
    width: 100%;
    height: 100%;
    min-height: 280px;
    background: transparent;
    border: none;
    color: var(--cream);
    font-family: 'Fira Code', 'Monaco', monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    resize: none;
    outline: none;
    tab-size: 4;
}

#code-editor::selection {
    background: var(--accent);
    color: white;
}

/* Output Container */
.output-container {
    background: white;
    border-top: 2px solid var(--beige);
    display: flex;
    flex-direction: column;
    max-height: 200px;
}

.output-header {
    padding: 0.75rem 1.5rem;
    background: var(--beige-light);
    border-bottom: 2px solid var(--beige);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.audio-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.indicator-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--beige-dark);
    transition: all 0.3s ease;
}

.indicator-dot.playing {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
    animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.output-display {
    flex: 1;
    padding: 1rem 1.5rem;
    overflow-y: auto;
    font-family: 'Fira Code', 'Monaco', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

.output-placeholder {
    color: var(--text-secondary);
    font-style: italic;
}

.output-line {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.output-line.success {
    color: var(--success);
}

.output-line.error {
    color: var(--error);
}

.output-line.info {
    color: var(--accent);
}

/* Controls Panel */
.controls-panel {
    background: white;
    border-left: 2px solid var(--beige);
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.controls-panel h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.control-group input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--beige);
    outline: none;
    -webkit-appearance: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    transition: all 0.3s ease;
}

.control-group input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--accent-hover);
    transform: scale(1.2);
}

#volume-value {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
}

.control-group select {
    background: var(--beige-light);
    border: 2px solid var(--beige);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    outline: none;
}

.stop-btn {
    background: var(--error);
    border: none;
    color: white;
    padding: 0.75rem;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

.stop-btn:hover {
    background: #A84444;
    transform: scale(1.05);
}

/* Visualizer */
.visualizer-container {
    background: var(--text-primary);
    border-radius: 12px;
    padding: 1rem;
}

.visualizer-container h4 {
    font-size: 0.9rem;
    color: var(--cream);
    margin-bottom: 0.75rem;
}

#visualizer {
    width: 100%;
    height: 120px;
    border-radius: 8px;
}

.info-box {
    background: var(--beige-light);
    border: 2px solid var(--beige);
    border-radius: 12px;
    padding: 1rem;
}

.info-box h4 {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.notes-display {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.notes-display .placeholder {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-style: italic;
}

.note-badge {
    background: var(--accent);
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    font-family: 'Fira Code', monospace;
}

/* Footer */
.playground-footer {
    background: var(--text-primary);
    color: var(--beige);
    padding: 1rem 2rem;
    text-align: center;
    border-top: 2px solid var(--brown-dark);
}

.playground-footer p {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.playground-footer a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
}

.playground-footer a:hover {
    text-decoration: underline;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--beige-light);
}

::-webkit-scrollbar-thumb {
    background: var(--beige-dark);
    border-radius: 5px;
}

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

/* Responsive */
@media (max-width: 1200px) {
    .playground-main {
        grid-template-columns: 220px 1fr 260px;
    }
}

@media (max-width: 900px) {
    .playground-main {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr auto;
    }

    .examples-sidebar,
    .controls-panel {
        max-height: 200px;
    }
}