/* ===================================
   Chroma - CSS Styles
   Modern, Professional, Beautiful
   Enhanced with Advanced UI/UX
   =================================== */

:root {
    /* Color Palette - Premium & Sophisticated (Light Mode) */
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #eef2ff;
    --primary-dark: #4338ca;
    --secondary-color: #06b6d4;
    --secondary-hover: #0891b2;
    --accent-color: #8b5cf6;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-light: #94a3b8;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-hover: #f8fafc;
    --bg-glass: rgba(255, 255, 255, 0.8);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.04), 0 1px 2px 0 rgba(0, 0, 0, 0.02);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --shadow-colored: 0 20px 25px -5px rgba(99, 102, 241, 0.15), 0 10px 10px -5px rgba(99, 102, 241, 0.05);
    
    /* Spacing Scale */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.875rem;
    --spacing-md: 1.25rem;
    --spacing-lg: 1.75rem;
    --spacing-xl: 2.5rem;
    --spacing-2xl: 3.5rem;
    --spacing-3xl: 5rem;
    
    /* Border Radius Scale */
    --radius-xs: 0.25rem;
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-accent: linear-gradient(135deg, #ec4899 0%, #8b5cf6 100%);
    --gradient-mesh: radial-gradient(at 40% 20%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
                     radial-gradient(at 80% 0%, rgba(139, 92, 246, 0.15) 0px, transparent 50%),
                     radial-gradient(at 0% 50%, rgba(6, 182, 212, 0.15) 0px, transparent 50%);
}

/* Dark Mode Colors */
[data-theme="dark"] {
    --primary-color: #818cf8;
    --primary-hover: #6366f1;
    --primary-light: #312e81;
    --primary-dark: #a5b4fc;
    --secondary-color: #22d3ee;
    --secondary-hover: #06b6d4;
    --accent-color: #a78bfa;
    --success-color: #34d399;
    --error-color: #f87171;
    --warning-color: #fbbf24;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-light: #64748b;
    --border-color: #334155;
    --border-light: #1e293b;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-hover: #293548;
    --bg-glass: rgba(15, 23, 42, 0.8);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.6), 0 1px 2px 0 rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
    --shadow-colored: 0 20px 25px -5px rgba(129, 140, 248, 0.25), 0 10px 10px -5px rgba(129, 140, 248, 0.1);
    --gradient-mesh: radial-gradient(at 40% 20%, rgba(129, 140, 248, 0.1) 0px, transparent 50%),
                     radial-gradient(at 80% 0%, rgba(167, 139, 250, 0.1) 0px, transparent 50%),
                     radial-gradient(at 0% 50%, rgba(34, 211, 238, 0.1) 0px, transparent 50%);
}

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

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

*::selection {
    background: var(--primary-color);
    color: white;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* Animated gradient mesh background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-mesh);
    z-index: -1;
    animation: meshMove 20s ease-in-out infinite alternate;
}

body::after {
    content: '';
    position: fixed;
    top: -10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: var(--gradient-primary);
    opacity: 0.08;
    border-radius: 50%;
    filter: blur(80px);
    z-index: -1;
    animation: float 15s ease-in-out infinite;
}

@keyframes meshMove {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-50px, -50px); }
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    width: 100%;
}

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

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

.header-top {
    display: flex;
    justify-content: flex-end;
    margin-bottom: var(--spacing-lg);
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    padding: 0;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.theme-toggle:hover {
    background: var(--bg-primary);
    border-color: var(--primary-color);
    transform: rotate(20deg) scale(1.08);
    box-shadow: var(--shadow-colored);
}

.theme-toggle:active {
    transform: rotate(0deg) scale(0.92);
}

.theme-toggle svg {
    position: absolute;
    transition: all var(--transition-base);
    color: var(--primary-color);
}

.theme-toggle .sun-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.theme-toggle .moon-icon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}

[data-theme="dark"] .theme-toggle .sun-icon {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}

[data-theme="dark"] .theme-toggle .moon-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.05em;
    animation: titleGradient 8s ease-in-out infinite;
    position: relative;
    display: inline-block;
}

.title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    opacity: 0.6;
}

@keyframes titleGradient {
    0%, 100% { 
        filter: hue-rotate(0deg) brightness(1);
    }
    50% { 
        filter: hue-rotate(10deg) brightness(1.1);
    }
}

.tagline {
    font-size: clamp(1rem, 3vw, 1.5rem);
    color: var(--text-secondary);
    font-weight: 500;
    max-width: 680px;
    margin: 0 auto;
    letter-spacing: -0.015em;
    line-height: 1.5;
}

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

.input-section {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-3xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl), inset 0 1px 0 0 rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-2xl);
    position: relative;
    overflow: hidden;
}

.input-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    opacity: 0.6;
}

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

.url-input {
    flex: 1;
    padding: 1.125rem 1.5rem;
    font-size: 1.0625rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-base);
    outline: none;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    box-shadow: var(--shadow-sm);
}

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

.url-input:focus {
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: 0 0 0 4px var(--primary-light), var(--shadow-md);
    transform: translateY(-1px);
}

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

.snatch-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 1.125rem 2.25rem;
    font-size: 1.0625rem;
    font-weight: 600;
    color: white;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-colored);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.snatch-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.snatch-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.1));
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
}

.snatch-btn:hover::before {
    opacity: 1;
}

.snatch-btn:hover::after {
    transform: translateX(100%);
}

.snatch-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 25px 35px -5px rgba(99, 102, 241, 0.3), 0 15px 15px -5px rgba(99, 102, 241, 0.15);
}

.snatch-btn:active {
    transform: translateY(-1px) scale(0.98);
}

.snatch-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: var(--shadow-md);
}

.btn-icon {
    transition: transform var(--transition-base);
    position: relative;
    z-index: 1;
}

.btn-text {
    position: relative;
    z-index: 1;
}

.snatch-btn:hover .btn-icon {
    transform: translateY(2px);
    animation: bounce 0.6s ease-in-out;
}

@keyframes bounce {
    0%, 100% { transform: translateY(2px); }
    50% { transform: translateY(6px); }
}

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

.spinner {
    width: 56px;
    height: 56px;
    border: 4px solid var(--border-light);
    border-top-color: var(--primary-color);
    border-right-color: var(--secondary-color);
    border-radius: 50%;
    animation: spin 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

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

.loading-indicator p {
    font-weight: 600;
    font-size: 1.0625rem;
    color: var(--text-primary);
}

/* Error Message */
.error-message {
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(239, 68, 68, 0.05));
    border: 2px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-xl);
    color: var(--error-color);
    text-align: center;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.hidden {
    display: none !important;
}

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

.results-section {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-3xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-2xl), inset 0 1px 0 0 rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-2xl);
    animation: slideUpFade 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
}

.results-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0.8;
}

@keyframes slideUpFade {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.result-column {
    min-width: 0;
    animation: fadeIn 0.5s ease-out forwards;
    animation-delay: calc(var(--index, 0) * 0.1s);
    opacity: 0;
}

.result-column:nth-child(1) { --index: 0; }
.result-column:nth-child(2) { --index: 1; }
.result-column:nth-child(3) { --index: 2; }

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(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-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
    position: relative;
}

.column-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 70px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    animation: expandLine 0.6s ease-out 0.3s both;
}

@keyframes expandLine {
    from {
        width: 0;
        opacity: 0;
    }
    to {
        width: 70px;
        opacity: 1;
    }
}

.column-title svg {
    color: var(--primary-color);
    filter: drop-shadow(0 2px 8px rgba(99, 102, 241, 0.3));
}

/* Color Palette */
.color-palette {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.color-swatch {
    aspect-ratio: 1;
    border-radius: var(--radius-2xl);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg), inset 0 0 0 1px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.color-swatch:hover {
    transform: translateY(-6px) scale(1.05);
    box-shadow: 0 25px 35px -5px rgba(0, 0, 0, 0.2), 
                0 15px 15px -5px rgba(0, 0, 0, 0.1),
                inset 0 0 0 1px rgba(0, 0, 0, 0.1);
    z-index: 1;
}

.color-swatch:active {
    transform: translateY(-4px) scale(0.98);
}

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

.color-swatch.copied {
    animation: copyPulse 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes copyPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

.color-code {
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: white;
    padding: var(--spacing-sm);
    text-align: center;
    font-size: 0.8125rem;
    font-family: 'SF Mono', 'Monaco', 'Courier New', monospace;
    font-weight: 700;
    opacity: 0;
    transform: translateY(15px);
    transition: opacity var(--transition-base), transform var(--transition-base);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    letter-spacing: 0.02em;
}

.color-percentage {
    font-size: 0.75rem;
    opacity: 0.95;
    font-weight: 700;
    color: var(--success-color);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.color-swatch:hover .color-code {
    opacity: 1;
    transform: translateY(0);
}

.contrast-info {
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: white;
    padding: 0.375rem var(--spacing-sm);
    text-align: center;
    font-size: 0.75rem;
    font-weight: 700;
    opacity: 0;
    transform: translateY(15px);
    transition: opacity var(--transition-base), transform var(--transition-base);
    transition-delay: 50ms;
    letter-spacing: 0.03em;
}

.color-swatch:hover .contrast-info {
    opacity: 1;
    transform: translateY(0);
}

.color-swatch.light-color .color-code,
.color-swatch.light-color .contrast-info {
    background: rgba(255, 255, 255, 0.95);
    color: #000;
}

.color-swatch.light-color .color-percentage {
    color: var(--primary-color);
    text-shadow: none;
}

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

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

.font-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transition: left var(--transition-slow);
}

.font-item:hover {
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.font-item:hover::before {
    left: 0;
}

.font-header {
    margin-bottom: var(--spacing-sm);
}

.font-name {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--text-secondary);
    font-family: 'SF Mono', 'Monaco', 'Courier New', monospace;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.font-percentage-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.375rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 800;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    animation: badgeFadeIn 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55) backwards;
}

@keyframes badgeFadeIn {
    from { 
        opacity: 0; 
        transform: scale(0.7) rotate(-5deg);
    }
    to { 
        opacity: 1; 
        transform: scale(1) rotate(0deg);
    }
}

.font-sample {
    font-size: 1.625rem;
    color: var(--text-primary);
    line-height: 1.5;
    font-weight: 400;
}

/* Gradients Section */
.gradient-section {
    margin-top: var(--spacing-2xl);
    border-top: 2px solid var(--border-color);
    padding-top: var(--spacing-2xl);
}

.gradient-palette {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.gradient-item {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-base);
    overflow: hidden;
}

.gradient-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.gradient-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.gradient-item:hover::before {
    opacity: 1;
}

.gradient-item.copied {
    animation: copyPulse 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.gradient-preview {
    height: 140px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg), inset 0 0 0 1px rgba(0, 0, 0, 0.1);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    overflow: hidden;
}

.gradient-preview::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.1);
    pointer-events: none;
}

.gradient-code {
    font-size: 0.875rem;
    font-family: 'SF Mono', 'Monaco', 'Courier New', monospace;
    color: var(--text-secondary);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    word-break: break-all;
    line-height: 1.7;
    max-height: 120px;
    overflow-y: auto;
    border: 1px solid var(--border-light);
}

.gradient-code::-webkit-scrollbar {
    width: 6px;
}

.gradient-code::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.gradient-code::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: var(--radius-sm);
}

.gradient-copy-btn {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
}

.gradient-copy-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: scale(1.12) rotate(5deg);
    box-shadow: var(--shadow-colored);
}

.gradient-copy-btn:active {
    transform: scale(0.95);
}

.gradient-copy-btn svg {
    pointer-events: none;
}

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

.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
}

.copy-css-btn,
.export-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 1.25rem 2.5rem;
    font-size: 1.0625rem;
    font-weight: 700;
    color: white;
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.copy-css-btn::before,
.export-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.copy-css-btn:hover::before,
.export-btn:hover::before {
    opacity: 1;
}

.copy-css-btn {
    background: var(--gradient-primary);
}

.export-btn {
    background: var(--gradient-secondary);
}

.copy-css-btn:hover,
.export-btn:hover {
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 30px 40px -10px rgba(99, 102, 241, 0.35);
}

.export-btn:hover {
    box-shadow: 0 30px 40px -10px rgba(6, 182, 212, 0.35);
}

.copy-css-btn:active,
.export-btn:active {
    transform: translateY(-2px) scale(0.98);
}

.copy-css-btn:disabled,
.export-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: var(--shadow-md);
}

.copy-feedback {
    color: var(--success-color);
    font-weight: 700;
    font-size: 1.0625rem;
    animation: feedbackPulse 2s ease-out;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
    border-radius: var(--radius-lg);
    border: 2px solid rgba(16, 185, 129, 0.3);
}

@keyframes feedbackPulse {
    0% { opacity: 0; transform: scale(0.9) translateY(5px); }
    10%, 90% { opacity: 1; transform: scale(1) translateY(0); }
    100% { opacity: 0; transform: scale(0.95) translateY(-5px); }
}

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

.footer {
    text-align: center;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    color: var(--text-light);
    font-size: 0.9375rem;
    margin-top: var(--spacing-3xl);
}

.footer-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 700;
    transition: all var(--transition-base);
    position: relative;
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
}

.footer-link:hover {
    color: var(--primary-hover);
    transform: translateY(-2px);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
}

.footer-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0.5rem;
    right: 0.5rem;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-base);
    border-radius: var(--radius-full);
}

.footer-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

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

/* Tablet and below */
@media (max-width: 1024px) {
    .results-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
}

/* Tablet */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .title {
        font-size: clamp(2rem, 10vw, 3.5rem);
    }
    
    .tagline {
        font-size: clamp(0.9375rem, 4vw, 1.25rem);
    }
    
    .header {
        padding: var(--spacing-xl) 0;
    }
    
    .input-section {
        padding: var(--spacing-lg);
    }
    
    .input-wrapper {
        flex-direction: column;
    }
    
    .snatch-btn {
        width: 100%;
        justify-content: center;
        padding: 1.25rem 2rem;
    }
    
    .results-section {
        padding: var(--spacing-lg);
    }
    
    .results-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .color-palette {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: var(--spacing-sm);
    }
    
    .action-buttons {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-sm);
    }
    
    .copy-css-btn,
    .export-btn {
        width: 100%;
        justify-content: center;
    }
    
    .font-sample {
        font-size: 1.375rem;
    }
    
    .gradient-preview {
        height: 120px;
    }
}

/* Mobile */
@media (max-width: 480px) {
    body {
        padding: var(--spacing-sm);
    }
    
    body::after {
        width: 400px;
        height: 400px;
    }
    
    .header {
        padding: var(--spacing-lg) 0;
    }
    
    .title {
        font-size: clamp(1.75rem, 12vw, 2.5rem);
    }
    
    .title::after {
        width: 80px;
        height: 3px;
    }
    
    .tagline {
        font-size: clamp(0.875rem, 4.5vw, 1.125rem);
    }
    
    .theme-toggle {
        width: 44px;
        height: 44px;
    }
    
    .input-section {
        padding: var(--spacing-md);
        border-radius: var(--radius-2xl);
    }
    
    .url-input {
        padding: 1rem 1.25rem;
        font-size: 1rem;
    }
    
    .snatch-btn {
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
    
    .results-section {
        padding: var(--spacing-md);
        border-radius: var(--radius-2xl);
    }
    
    .column-title {
        font-size: 1.25rem;
    }
    
    .color-palette {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
        gap: var(--spacing-xs);
    }
    
    .color-swatch {
        border-radius: var(--radius-xl);
    }
    
    .color-code {
        font-size: 0.75rem;
        padding: var(--spacing-xs);
    }
    
    .font-item {
        padding: var(--spacing-md);
    }
    
    .font-name {
        font-size: 0.875rem;
    }
    
    .font-sample {
        font-size: 1.125rem;
    }
    
    .gradient-preview {
        height: 100px;
    }
    
    .gradient-code {
        font-size: 0.8125rem;
        padding: var(--spacing-sm);
    }
    
    .copy-css-btn,
    .export-btn {
        font-size: 0.9375rem;
        padding: 1.125rem 1.75rem;
    }
    
    .action-bar {
        padding-top: var(--spacing-lg);
    }
}

/* Small mobile */
@media (max-width: 360px) {
    .color-palette {
        grid-template-columns: repeat(auto-fill, minmax(75px, 1fr));
    }
    
    .font-sample {
        font-size: 1rem;
    }
}

/* ===================================
   Accessibility & Performance
   =================================== */

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    body::before,
    body::after {
        animation: none !important;
    }
}

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 3px;
    border-radius: var(--radius-xs);
}

button:focus-visible,
input:focus-visible {
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000;
    }
    
    [data-theme="dark"] {
        --border-color: #fff;
    }
    
    .color-swatch {
        border: 2px solid currentColor;
    }
}

/* Print styles */
@media print {
    body {
        background: white;
    }
    
    body::before,
    body::after {
        display: none;
    }
    
    .header-top,
    .input-section,
    .action-bar,
    .theme-toggle {
        display: none;
    }
    
    .results-section {
        box-shadow: none;
        border: 1px solid #000;
    }
    
    .color-swatch,
    .gradient-item,
    .font-item {
        break-inside: avoid;
    }
}

/* Dark mode image adjustments */
[data-theme="dark"] img {
    opacity: 0.9;
}

/* Selection styling */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}

/* Custom scrollbar for webkit browsers */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: var(--radius-full);
    border: 3px solid var(--bg-secondary);
}

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

/* Loading state animation */
@keyframes shimmer {
    0% {
        background-position: -468px 0;
    }
    100% {
        background-position: 468px 0;
    }
}

/* Smooth appearance animation for elements */
@keyframes appear {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Performance optimizations */
.color-swatch,
.font-item,
.gradient-item,
.snatch-btn,
.copy-css-btn,
.export-btn {
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}