:root {
    --bg-light: #f9fafb;
    --bg-dark: #111827;
    --text-light: #1f2937;
    --text-dark: #e5e7eb;
    --card-light: #ffffff;
    --card-dark: #1f2937;
    --border-light: #e5e7eb;
    --border-dark: #374151;
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --secondary: #8b5cf6;
    --accent: #10b981;
    --accent-hover: #059669;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-light);
    min-height: 100vh;
    padding: 1rem;
    transition: background-color 0.3s, color 0.3s;
}

@media (prefers-color-scheme: dark) {
    body {
        background-color: var(--bg-dark);
        color: var(--text-dark);
    }
}

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

.header {
    margin-bottom: 2rem;
}

.title {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.icon {
    color: var(--primary);
}

.subtitle {
    color: #6b7280;
    font-size: 0.875rem;
}

@media (prefers-color-scheme: dark) {
    .subtitle {
        color: #9ca3af;
    }
}

.main-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .main-grid {
        grid-template-columns: 2fr 1fr;
    }
    
    .preview-column {
        position: sticky;
        top: 2rem;
        height: fit-content;
    }
}

.card {
    background-color: var(--card-light);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 1.5rem;
}

@media (prefers-color-scheme: dark) {
    .card {
        background-color: var(--card-dark);
    }
}

.dark-card {
    background-color: #111827;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.shape-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

.shape-btn {
    padding: 1rem;
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    background: transparent;
    cursor: pointer;
    transition: all 0.2s;
}

.shape-btn:hover {
    border-color: var(--primary);
}

.shape-btn.active {
    border: 2px solid var(--primary);
    background-color: rgba(59, 130, 246, 0.05);
}

@media (prefers-color-scheme: dark) {
    .shape-btn {
        border-color: var(--border-dark);
    }
    
    .shape-btn.active {
        background-color: rgba(59, 130, 246, 0.1);
    }
}

.shape-preview {
    width: 100%;
    height: 3rem;
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
}

.blob-preview {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.wave-preview {
    background: linear-gradient(135deg, #10b981, var(--primary));
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
}

.cloud-preview {
    background: linear-gradient(135deg, #ec4899, #ef4444);
    border-radius: 50% 50% 50% 50% / 40% 40% 60% 60%;
}

.color-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.color-buttons {
    display: flex;
    gap: 0.5rem;
}

.color-btn {
    width: 2rem;
    height: 2rem;
    border-radius: 0.5rem;
    border: 2px solid var(--border-light);
    cursor: pointer;
    transition: transform 0.2s;
}

.color-btn:hover {
    transform: scale(1.1);
}

@media (prefers-color-scheme: dark) {
    .color-btn {
        border-color: var(--border-dark);
    }
}

.color-picker-wrapper {
    margin-bottom: 4rem;
}

.color-picker-container {
    width: 100%;
    max-width: 240px;
    height: 240px;
    margin: 0 auto;
}

.controls-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 768px) {
    .controls-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.controls-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.control-group {
    margin-bottom: 0.5rem;
}

.control-label {
    display: block;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    background-color: var(--card-light);
    color: var(--text-light);
}

@media (prefers-color-scheme: dark) {
    .select {
        border-color: var(--border-dark);
        background-color: var(--bg-dark);
        color: var(--text-dark);
    }
}

.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    outline: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--primary);
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--primary);
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

.example-btn {
    padding: 0.75rem;
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    background: transparent;
    cursor: pointer;
    transition: border-color 0.2s;
}

.example-btn:hover {
    border-color: var(--primary);
}

@media (prefers-color-scheme: dark) {
    .example-btn {
        border-color: var(--border-dark);
    }
}

.example-preview {
    width: 100%;
    height: 4rem;
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
}

.droplet {
    background: linear-gradient(135deg, #60a5fa, #06b6d4);
}

.heart {
    background: linear-gradient(135deg, #ec4899, #ef4444);
    border-radius: 50% 50% 50% 50% / 40% 40% 60% 60%;
}

.organic {
    background: linear-gradient(135deg, #34d399, #0d9488);
    border-radius: 40% 60% 60% 40% / 60% 30% 70% 40%;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.reset-btn {
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    background-color: #f3f4f6;
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
    transition: background-color 0.2s;
}

.reset-btn:hover {
    background-color: #e5e7eb;
}

@media (prefers-color-scheme: dark) {
    .reset-btn {
        background-color: #374151;
        color: var(--text-dark);
    }
    
    .reset-btn:hover {
        background-color: #4b5563;
    }
}

.preview-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.preview-container {
    width: 300px;
    height: 300px;
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .preview-container {
        width: 250px;
        height: 250px;
    }
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.copy-btn {
    padding: 0.5rem 1rem;
    background-color: var(--accent);
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color 0.2s;
}

.copy-btn:hover {
    background-color: var(--accent-hover);
}

.css-output {
    background-color: #1f2937;
    color: #10b981;
    padding: 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    overflow-x: auto;
    min-height: 160px;
}

.footer {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
    text-align: center;
    color: #6b7280;
    font-size: 0.875rem;
}

@media (prefers-color-scheme: dark) {
    .footer {
        border-color: var(--border-dark);
        color: #9ca3af;
    }
}

.hidden {
    display: none;
}

.header {
    margin-bottom: 2rem;
    text-align: center;
}

.header-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .header-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        text-align: left;
    }
}

.header-title {
    flex: 1;
}

.github-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: #f3f4f6;
    color: #374151;
    border-radius: 0.5rem;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s;
    border: 1px solid #e5e7eb;
}

.github-link:hover {
    background-color: #e5e7eb;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.github-link i {
    font-size: 1.125rem;
}

.star-count {
    margin-left: 0.25rem;
    color: #6b7280;
    font-size: 0.875rem;
}

@media (prefers-color-scheme: dark) {
    .github-link {
        background-color: #374151;
        color: #e5e7eb;
        border-color: #4b5563;
    }
    
    .github-link:hover {
        background-color: #4b5563;
    }
    
    .star-count {
        color: #9ca3af;
    }
}

.title {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

@media (min-width: 768px) {
    .title {
        justify-content: flex-start;
    }
}

.subtitle {
    color: #6b7280;
    font-size: 0.875rem;
    text-align: center;
}

@media (min-width: 768px) {
    .subtitle {
        text-align: left;
    }
}

@media (prefers-color-scheme: dark) {
    .subtitle {
        color: #9ca3af;
    }
}