/* ============================================
   DevTools Hub - Adaptive Theme Design
   Supports both light and dark modes via system preference
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* CSS Variables - Shared Constants */
:root {
    /* Accent Colors - Consistent across themes */
    --accent-primary: #d97706;
    --accent-primary-light: #f59e0b;
    --accent-secondary: #0891b2;
    --accent-secondary-light: #06b6d4;
    --accent-tertiary: #7c3aed;
    --accent-tertiary-light: #8b5cf6;

    /* Status Colors */
    --success: #16a34a;
    --success-light: #22c55e;
    --error: #dc2626;
    --error-light: #ef4444;
    --warning: #d97706;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --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(0.34, 1.56, 0.64, 1);
}

/* ============================================
   Light Theme (Default)
   Clean, professional with warm amber accents
   ============================================ */
:root {
    /* Background Colors - Warm off-whites */
    --bg-primary: #fafaf9;
    --bg-secondary: #f5f5f4;
    --bg-tertiary: #e7e5e4;
    --bg-card: rgba(255, 255, 255, 0.8);
    --bg-card-hover: rgba(255, 255, 255, 0.95);

    /* Text Colors */
    --text-primary: #1c1917;
    --text-secondary: #57534e;
    --text-tertiary: #78716c;
    --text-accent: var(--accent-primary);

    /* Borders & Lines */
    --border-subtle: rgba(0, 0, 0, 0.06);
    --border-medium: rgba(0, 0, 0, 0.1);
    --border-accent: rgba(217, 119, 6, 0.3);

    /* Glows - Subtle in light mode */
    --accent-primary-glow: rgba(217, 119, 6, 0.15);
    --accent-secondary-glow: rgba(8, 145, 178, 0.12);
    --success-glow: rgba(22, 163, 74, 0.12);
    --error-glow: rgba(220, 38, 38, 0.12);

    /* Code Colors */
    --code-bg: #f5f5f4;
    --code-border: rgba(0, 0, 0, 0.08);

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1), 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 40px var(--accent-primary-glow);

    /* Header specific */
    --header-bg: rgba(250, 250, 249, 0.85);

    /* Hero gradient colors */
    --hero-gradient-1: rgba(217, 119, 6, 0.08);
    --hero-gradient-2: rgba(8, 145, 178, 0.06);
    --hero-gradient-3: rgba(124, 58, 237, 0.05);

    /* Floating symbols */
    --symbol-opacity: 0.08;

    /* Noise texture opacity */
    --noise-opacity: 0.02;

    /* JSON Syntax Colors */
    --json-key: #0369a1;
    --json-string: #15803d;
    --json-number: #b91c1c;
    --json-boolean: #7c3aed;
    --json-null: #78716c;
}

/* ============================================
   Dark Theme
   Rich, premium dark with warm amber accents
   ============================================ */
@media (prefers-color-scheme: dark) {
    :root {
        /* Background Colors - Deep, rich darks */
        --bg-primary: #0a0a0f;
        --bg-secondary: #12121a;
        --bg-tertiary: #1a1a24;
        --bg-card: rgba(26, 26, 36, 0.6);
        --bg-card-hover: rgba(38, 38, 52, 0.8);

        /* Text Colors */
        --text-primary: #f4f4f5;
        --text-secondary: #a1a1aa;
        --text-tertiary: #71717a;
        --text-accent: var(--accent-primary-light);

        /* Override accent for better visibility in dark mode */
        --accent-primary: #f59e0b;
        --accent-secondary: #06b6d4;
        --accent-tertiary: #8b5cf6;

        /* Borders & Lines */
        --border-subtle: rgba(255, 255, 255, 0.06);
        --border-medium: rgba(255, 255, 255, 0.1);
        --border-accent: rgba(245, 158, 11, 0.3);

        /* Glows - More prominent in dark mode */
        --accent-primary-glow: rgba(245, 158, 11, 0.4);
        --accent-secondary-glow: rgba(6, 182, 212, 0.3);
        --success-glow: rgba(34, 197, 94, 0.2);
        --error-glow: rgba(239, 68, 68, 0.2);

        /* Status Colors - Brighter for dark mode */
        --success: #22c55e;
        --error: #ef4444;

        /* Code Colors */
        --code-bg: #0d0d12;
        --code-border: rgba(255, 255, 255, 0.08);

        /* Shadows */
        --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
        --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
        --shadow-glow: 0 0 60px var(--accent-primary-glow);

        /* Header specific */
        --header-bg: rgba(10, 10, 15, 0.8);

        /* Hero gradient colors */
        --hero-gradient-1: rgba(245, 158, 11, 0.15);
        --hero-gradient-2: rgba(6, 182, 212, 0.12);
        --hero-gradient-3: rgba(139, 92, 246, 0.1);

        /* Floating symbols */
        --symbol-opacity: 0.15;

        /* Noise texture opacity */
        --noise-opacity: 0.015;

        /* JSON Syntax Colors */
        --json-key: #7dd3fc;
        --json-string: #86efac;
        --json-number: #fca5a5;
        --json-boolean: #c4b5fd;
        --json-null: #71717a;
    }
}

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
}

/* Subtle noise texture overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: var(--noise-opacity);
    z-index: 1000;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--text-primary);
}

::selection {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

/* ============================================
   Container
   ============================================ */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ============================================
   Header - Glassmorphic Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--header-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--text-primary);
    transition: var(--transition-base);
}

.logo:hover {
    color: var(--accent-primary);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-primary) 0%, #d97706 100%);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--bg-primary);
    box-shadow: 0 4px 16px var(--accent-primary-glow);
    transition: var(--transition-base);
}

.logo:hover .logo-icon {
    transform: rotate(-5deg) scale(1.05);
    box-shadow: 0 6px 24px var(--accent-primary-glow);
}

.nav {
    display: flex;
    gap: var(--space-xs);
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 101;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.nav a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
    position: relative;
}

.nav a:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background: var(--accent-primary);
    border-radius: var(--radius-full);
    transition: transform var(--transition-fast);
}

.nav a:hover::after {
    transform: translateX(-50%) scaleX(1);
}

/* ============================================
   Hero Section - Animated Gradient Mesh
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4xl) 0;
    overflow: hidden;
    margin-top: -72px;
    padding-top: calc(72px + var(--space-4xl));
}

/* Animated gradient background */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 80% 50% at 20% 40%, var(--hero-gradient-1) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 60%, var(--hero-gradient-2) 0%, transparent 50%),
        radial-gradient(ellipse 50% 30% at 50% 80%, var(--hero-gradient-3) 0%, transparent 50%);
    animation: gradientShift 15s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% {
        background-position: 0% 50%;
        filter: hue-rotate(0deg);
    }
    50% {
        background-position: 100% 50%;
        filter: hue-rotate(10deg);
    }
}

/* Grid pattern overlay */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(var(--border-subtle) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero .container {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.6s ease-out;
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.1); }
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.6s ease-out 0.1s backwards;
}

.hero h1 .text-gradient {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 50%, var(--accent-tertiary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 540px;
    margin: 0 auto var(--space-2xl);
    font-weight: 400;
    animation: fadeInUp 0.6s ease-out 0.2s backwards;
}

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

/* Search Box - Refined */
.search-box {
    max-width: 560px;
    margin: 0 auto;
    position: relative;
    animation: fadeInUp 0.6s ease-out 0.3s backwards;
}

.search-box::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary), var(--accent-tertiary));
    border-radius: var(--radius-lg);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.search-box:focus-within::before {
    opacity: 0.5;
    animation: borderGlow 2s ease-in-out infinite;
}

@keyframes borderGlow {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

.search-box input {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    padding-left: 52px;
    font-family: 'Outfit', sans-serif;
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-lg);
    outline: none;
    transition: var(--transition-base);
}

.search-box input::placeholder {
    color: var(--text-tertiary);
}

.search-box input:focus {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px var(--accent-primary-glow);
}

.search-icon {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    pointer-events: none;
}

/* Floating code symbols */
.floating-symbols {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 1;
}

.floating-symbol {
    position: absolute;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.5rem;
    color: var(--text-tertiary);
    opacity: var(--symbol-opacity);
    animation: float 20s linear infinite;
}

@keyframes float {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: var(--symbol-opacity);
    }
    90% {
        opacity: var(--symbol-opacity);
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

/* ============================================
   Tool Sections
   ============================================ */
.tools-section {
    padding: var(--space-4xl) 0;
    position: relative;
}

.tools-section.alt-bg {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.section-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.25rem;
    color: var(--accent-primary);
}

.tools-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.section-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border-medium) 0%, transparent 100%);
}

/* Tool Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
}

/* Tool Cards - Glass Effect */
.tool-card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    transition: var(--transition-base);
    overflow: hidden;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-medium), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.tool-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, var(--accent-primary-glow) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-slow);
    pointer-events: none;
}

.tool-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-accent);
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-md), 0 0 40px var(--accent-primary-glow);
}

.tool-card:hover::before {
    opacity: 1;
}

.tool-card:hover::after {
    opacity: 0.1;
}

.tool-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: var(--space-md);
    transition: var(--transition-base);
}

.tool-card:hover .tool-icon {
    background: linear-gradient(135deg, var(--accent-primary) 0%, #d97706 100%);
    color: var(--bg-primary);
    border-color: transparent;
    box-shadow: 0 4px 20px var(--accent-primary-glow);
    transform: scale(1.05);
}

.tool-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    transition: color var(--transition-fast);
}

.tool-card:hover h3 {
    color: var(--accent-primary);
}

.tool-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
}

.tool-card-arrow {
    position: absolute;
    bottom: var(--space-lg);
    right: var(--space-lg);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    opacity: 0;
    transform: translateX(-8px);
    transition: var(--transition-base);
}

.tool-card:hover .tool-card-arrow {
    opacity: 1;
    transform: translateX(0);
    background: var(--accent-primary);
    color: var(--bg-primary);
}

/* ============================================
   Ad Containers - Hidden for v1 launch
   TODO: Remove display:none when ads are enabled
   ============================================ */
.ad-container,
.ad-sidebar {
    display: none;
}

/*
 * Ad styles below are preserved for when ads are enabled.
 * To enable ads: remove the display:none rule above
 */
/*
.ad-container {
    padding: var(--space-xl) 0;
}

.ad-banner {
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.ad-inline {
    max-width: 728px;
    margin: 0 auto;
}

.ad-placeholder {
    background: var(--bg-secondary);
    border: 1px dashed var(--border-medium);
    border-radius: var(--radius-md);
    padding: var(--space-2xl);
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.ad-sidebar {
    background: var(--bg-secondary);
    border: 1px dashed var(--border-medium);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}
*/

/* ============================================
   Features Section
   ============================================ */
.features-section {
    padding: var(--space-4xl) 0;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.features-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-primary-glow) 0%, transparent 60%);
    opacity: 0.3;
    pointer-events: none;
}

.features-section h2 {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-3xl);
    position: relative;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-xl);
    position: relative;
}

.feature {
    text-align: center;
    padding: var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
}

.feature:hover {
    border-color: var(--border-medium);
    transform: translateY(-4px);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    font-size: 1.75rem;
    transition: var(--transition-base);
}

.feature:hover .feature-icon {
    background: linear-gradient(135deg, var(--accent-primary) 0%, #d97706 100%);
    border-color: transparent;
    box-shadow: 0 4px 24px var(--accent-primary-glow);
}

.feature h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.feature p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--space-3xl) 0 var(--space-xl);
    background: var(--bg-primary);
    border-top: 1px solid var(--border-subtle);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr repeat(2, 1fr);
    gap: var(--space-3xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: var(--space-md);
}

.footer-brand p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-section h4 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: var(--space-md);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--space-sm);
}

.footer-section ul a {
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.footer-section ul a:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-subtle);
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

.footer-links a:hover {
    color: var(--accent-primary);
}

/* ============================================
   Tool Page Styles
   ============================================ */
.tool-page {
    padding: calc(72px + var(--space-2xl)) 0 var(--space-3xl);
    min-height: 100vh;
}

.tool-page-header {
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--border-subtle);
}

.tool-page-header h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.tool-page-header p {
    font-size: 1rem;
    color: var(--text-secondary);
}

.tool-container {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--space-xl);
}

.tool-main {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

.tool-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

/* Input/Output Areas */
.input-group {
    margin-bottom: var(--space-lg);
}

.input-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.input-group textarea,
.input-group input[type="text"],
.input-group input[type="number"] {
    width: 100%;
    padding: var(--space-md);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    resize: vertical;
    transition: var(--transition-fast);
}

.input-group textarea:focus,
.input-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

.input-group textarea {
    min-height: 180px;
}

.input-group textarea::placeholder,
.input-group input::placeholder {
    color: var(--text-tertiary);
}

.output-area {
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    color: var(--text-primary);
    min-height: 180px;
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-all;
    line-height: 1.7;
}

.output-wrapper {
    position: relative;
}

/* Buttons */
.btn-group {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--space-lg);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    font-family: 'Outfit', sans-serif;
    font-size: 0.875rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, #d97706 100%);
    color: var(--bg-primary);
    box-shadow: 0 2px 8px var(--accent-primary-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px var(--accent-primary-glow);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--border-accent);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-danger {
    background: var(--error);
    color: white;
}

/* Copy Button */
.copy-btn {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.75rem;
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    border: 1px solid var(--border-medium);
}

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

/* Options Panel */
.options-panel {
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-bottom: var(--space-lg);
}

.options-panel h4 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    margin-bottom: var(--space-md);
}

.option-row {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.option-row:last-child {
    margin-bottom: 0;
}

.option-row label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.option-row input[type="checkbox"],
.option-row input[type="radio"] {
    accent-color: var(--accent-primary);
    cursor: pointer;
}

.option-row input[type="number"],
.option-row select {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.875rem;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-sm);
}

.option-row select {
    cursor: pointer;
}

/* Status Messages */
.status-bar {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-lg);
    font-size: 0.875rem;
    font-weight: 500;
}

.status-success {
    background: var(--success-glow);
    color: var(--success);
    border: 1px solid var(--success);
}

.status-error {
    background: var(--error-glow);
    color: var(--error);
    border: 1px solid var(--error);
}

.status-info {
    background: var(--accent-primary-glow);
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

/* Related Tools */
.related-tools {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.related-tools h4 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    margin-bottom: var(--space-md);
}

.related-tools ul {
    list-style: none;
}

.related-tools ul li {
    margin-bottom: var(--space-sm);
}

.related-tools ul li:last-child {
    margin-bottom: 0;
}

.related-tools ul a {
    display: block;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.related-tools ul a:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
}

/* Info Section */
.info-section {
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-subtle);
}

.info-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.info-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: var(--space-xl) 0 var(--space-sm);
    color: var(--text-primary);
}

.info-section p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.info-section ul,
.info-section ol {
    margin-left: var(--space-lg);
    margin-bottom: var(--space-md);
}

.info-section li {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-sm);
}

.info-section code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    padding: 2px 6px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
}

/* ============================================
   Syntax Highlighting - Uses theme variables
   ============================================ */
.json-key { color: var(--json-key); }
.json-string { color: var(--json-string); }
.json-number { color: var(--json-number); }
.json-boolean { color: var(--json-boolean); }
.json-null { color: var(--json-null); }

.diff-added {
    background: var(--success-glow);
    color: var(--success);
}

.diff-removed {
    background: var(--error-glow);
    color: var(--error);
}

.regex-match {
    background: rgba(245, 158, 11, 0.3);
    padding: 1px 2px;
    border-radius: 2px;
}

/* Color Preview */
.color-preview {
    width: 100%;
    height: 100px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-medium);
    margin-bottom: var(--space-md);
}

/* Stats Grid (Word Counter) */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: center;
    transition: var(--transition-fast);
}

.stat-card:hover {
    border-color: var(--border-accent);
}

.stat-card .stat-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--accent-primary);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.stat-card .stat-label {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .header .container {
        height: 64px;
    }

    /* Mobile Navigation */
    .nav-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--header-bg);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--space-lg);
        gap: var(--space-sm);
        border-bottom: 1px solid var(--border-subtle);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-base);
    }

    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav a {
        padding: var(--space-md);
        border-radius: var(--radius-md);
        text-align: center;
    }

    .nav a:hover {
        background: var(--bg-tertiary);
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }

    .tool-container {
        grid-template-columns: 1fr;
    }

    .tool-sidebar {
        order: -1;
    }

    .btn-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .footer-brand {
        grid-column: span 1;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

/* ============================================
   Utilities
   ============================================ */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-gradient {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mt-4 { margin-top: var(--space-md); }
.mb-4 { margin-bottom: var(--space-md); }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: var(--space-sm); }
.gap-4 { gap: var(--space-md); }

/* Scroll animations */
@media (prefers-reduced-motion: no-preference) {
    .tool-card,
    .feature {
        opacity: 0;
        transform: translateY(20px);
        animation: revealUp 0.5s ease forwards;
    }

    .tools-grid .tool-card:nth-child(1) { animation-delay: 0.1s; }
    .tools-grid .tool-card:nth-child(2) { animation-delay: 0.15s; }
    .tools-grid .tool-card:nth-child(3) { animation-delay: 0.2s; }
    .tools-grid .tool-card:nth-child(4) { animation-delay: 0.25s; }

    .features-grid .feature:nth-child(1) { animation-delay: 0.1s; }
    .features-grid .feature:nth-child(2) { animation-delay: 0.15s; }
    .features-grid .feature:nth-child(3) { animation-delay: 0.2s; }
    .features-grid .feature:nth-child(4) { animation-delay: 0.25s; }
}

@keyframes revealUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Color Scheme Transition
   Smooth transition when system theme changes
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
    body,
    .header,
    .tool-card,
    .feature,
    .btn,
    .input-group textarea,
    .input-group input,
    .output-area,
    .options-panel,
    .related-tools,
    .footer {
        transition:
            background-color 0.3s ease,
            border-color 0.3s ease,
            color 0.3s ease,
            box-shadow 0.3s ease;
    }
}