/* ===================================
   StyleSnatcher - CSS Styles
   Clean, Calm, Modern Aesthetic
   =================================== */

:root {
    /* Color Palette - Modern & Clean */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --primary-dark: #1e40af;
    --secondary-color: #0891b2;
    --success-color: #059669;
    --error-color: #dc2626;
    --warning-color: #f59e0b;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-light: #94a3b8;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-hover: #f1f5f9;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================
   Global Styles
   =================================== */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    padding: var(--spacing-md);
}

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

/* ===================================
   Header Section
   =================================== */

.header {
    text-align: center;
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.title {
    font-size: 3.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.03em;
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 500;
    max-width: 600px;
    margin: 0 auto;
}

/* ===================================
   Input Section
   =================================== */

.input-section {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.input-wrapper {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.url-input {
    flex: 1;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: all var(--transition-base);
    outline: none;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.url-input:focus {
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: 0 0 0 4px var(--primary-light);
}

.url-input::placeholder {
    color: var(--text-light);
}

.snatch-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    white-space: nowrap;
}

.snatch-btn:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-dark));
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.snatch-btn:active {
    transform: translateY(0);
}

.snatch-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-icon {
    transition: transform var(--transition-base);
}

.snatch-btn:hover .btn-icon {
    transform: translateY(2px);
}

/* Loading Indicator */
.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Error Message */
.error-message {
    padding: var(--spacing-md);
    background: #fee2e2;
    border: 1px solid #fecaca;
    border-radius: var(--radius-md);
    color: var(--error-color);
    text-align: center;
}

.hidden {
    display: none !important;
}

/* ===================================
   Results Section
   =================================== */

.results-section {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
    animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.result-column {
    min-width: 0;
}

.column-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-color);
}

.column-title svg {
    color: var(--primary-color);
}

/* Color Palette */
.color-palette {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--spacing-md);
}

.color-swatch {
    aspect-ratio: 1;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md), inset 0 0 0 1px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.color-swatch:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-xl), inset 0 0 0 1px rgba(0, 0, 0, 0.1);
}

.color-swatch:active {
    transform: scale(0.95);
}

.color-swatch:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

.color-code {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.75);
    color: white;
    padding: var(--spacing-xs);
    text-align: center;
    font-size: 0.875rem;
    font-family: 'Courier New', monospace;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.color-swatch:hover .color-code {
    opacity: 1;
}

/* Typography */
.typography-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.font-item {
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 2px solid var(--border-color);
    transition: all var(--transition-base);
}

.font-item:hover {
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.font-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    font-family: 'Courier New', monospace;
}

.font-sample {
    font-size: 1.5rem;
    color: var(--text-primary);
    line-height: 1.4;
}

/* Action Bar */
.action-bar {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--border-color);
}

.copy-css-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.copy-css-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
}

.copy-css-btn:active {
    transform: translateY(-1px);
}

.copy-css-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.copy-feedback {
    color: var(--success-color);
    font-weight: 600;
    animation: fadeInOut 2s ease-out;
}

@keyframes fadeInOut {
    0%, 100% { opacity: 0; }
    10%, 90% { opacity: 1; }
}

/* ===================================
   Footer
   =================================== */

.footer {
    text-align: center;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    color: var(--text-light);
    font-size: 0.875rem;
}

.footer-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-base);
    position: relative;
}

.footer-link:hover {
    color: var(--primary-hover);
}

.footer-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transition: width var(--transition-base);
}

.footer-link:hover::after {
    width: 100%;
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 768px) {
    .title {
        font-size: 2.5rem;
    }
    
    .tagline {
        font-size: 1.125rem;
    }
    
    .input-wrapper {
        flex-direction: column;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .color-palette {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
}

@media (max-width: 480px) {
    body {
        padding: var(--spacing-sm);
    }
    
    .header {
        padding: var(--spacing-xl) 0;
    }
    
    .title {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .input-section,
    .results-section {
        padding: var(--spacing-md);
    }
    
    .color-palette {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
        gap: var(--spacing-sm);
    }
}