/* ========================================
   DevTools - Modern Professional Style
   ======================================== */

/* CSS Variables */
:root {
    /* Colors */
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-tertiary: #18181b;
    --bg-card: #141416;
    --bg-card-hover: #1c1c1f;
    --bg-elevated: #1f1f23;
    
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-muted: #52525b;
    
    --accent: #10b981;
    --accent-hover: #059669;
    --accent-light: #34d399;
    --accent-glow: rgba(16, 185, 129, 0.4);
    
    --blue: #3b82f6;
    --purple: #8b5cf6;
    --pink: #ec4899;
    --orange: #f97316;
    --red: #ef4444;
    --yellow: #eab308;
    
    --border: #27272a;
    --border-light: #3f3f46;
    
    --gradient-1: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    --gradient-2: linear-gradient(135deg, var(--accent) 0%, #059669 100%);
    --gradient-text: linear-gradient(135deg, var(--accent-light) 0%, var(--accent) 50%, #047857 100%);
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* 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);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -2px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--accent-glow);
}

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

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

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Text Link */
.text-link {
    color: var(--accent);
    font-weight: 600;
    transition: opacity var(--transition-fast);
}

.text-link:hover {
    opacity: 0.8;
}

/* ========================================
   Header - Island Style Navbar
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-5) var(--space-6);
    transition: padding var(--transition-base);
    pointer-events: none;
}

.header.scrolled {
    padding: var(--space-3) var(--space-6);
}

.header-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 var(--space-6) 0 var(--space-8);
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(10, 10, 11, 0.88);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-radius: var(--radius-full);
    box-shadow: 
        0 0 0 1px rgba(16, 185, 129, 0.1),
        0 8px 32px rgba(0, 0, 0, 0.4),
        0 0 60px rgba(16, 185, 129, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: auto;
}

.header.scrolled .header-container {
    height: 64px;
    background: rgba(10, 10, 11, 0.95);
    border-color: rgba(16, 185, 129, 0.15);
    box-shadow: 
        0 0 0 1px rgba(16, 185, 129, 0.08),
        0 4px 20px rgba(0, 0, 0, 0.5),
        0 0 40px rgba(16, 185, 129, 0.05);
}

/* Logo */
.logo, .footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border-radius: var(--radius-lg);
    font-size: 1.125rem;
    color: white;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.logo:hover .logo-icon {
    transform: rotate(-10deg) scale(1.1);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.logo-text {
    font-size: 1.375rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

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

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover {
    color: var(--accent);
    background: rgba(16, 185, 129, 0.1);
}

.nav-link i {
    font-size: 0.875rem;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover i {
    transform: scale(1.2);
}

/* Dropdown */
.nav-dropdown {
    position: relative;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-btn:hover {
    color: var(--accent);
    background: rgba(16, 185, 129, 0.1);
}

.nav-btn i:first-child {
    font-size: 0.875rem;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-btn:hover i:first-child {
    transform: scale(1.2);
}

.nav-btn .arrow {
    font-size: 0.5rem;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-left: 2px;
    opacity: 0.6;
}

.nav-dropdown:hover .arrow {
    transform: rotate(180deg);
    opacity: 1;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 280px;
    background: rgba(17, 17, 19, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(16, 185, 129, 0.15);
    border-radius: var(--radius-xl);
    padding: var(--space-2);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.4),
        0 0 40px rgba(16, 185, 129, 0.05);
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    border-radius: var(--radius-lg);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.dropdown-item:hover {
    background: rgba(16, 185, 129, 0.1);
    transform: translateX(4px);
}

.dropdown-item .item-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    color: var(--accent);
    font-size: 0.9375rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dropdown-item:hover .item-icon {
    background: var(--accent);
    color: white;
    transform: scale(1.1) rotate(-5deg);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.dropdown-item .item-icon.gradient-icon {
    background: var(--gradient-2);
    color: white;
}

.dropdown-item:hover .item-icon.gradient-icon {
    transform: scale(1.1) rotate(-5deg);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.item-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.item-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: color 0.2s ease;
}

.dropdown-item:hover .item-title {
    color: var(--accent);
}

.item-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    transition: color 0.2s ease;
}

.dropdown-item:hover .item-desc {
    color: var(--text-secondary);
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-2);
    margin-right: var(--space-2);
}

.mobile-menu-btn span {
    width: 18px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.grid-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 50% at 50% 0%, black 70%, transparent 100%);
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--accent);
    top: -200px;
    right: -100px;
    opacity: 0.15;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--accent-light);
    bottom: -100px;
    left: -100px;
    opacity: 0.08;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: var(--accent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.06;
}

.hero-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-16) var(--space-6);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.hero-content {
    max-width: 560px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: var(--space-6);
}

.hero-badge i {
    font-size: 0.75rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1.5px;
    margin-bottom: var(--space-6);
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-8);
}

.hero-buttons {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.btn i {
    font-size: 0.875rem;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: 1rem;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.hero-stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

/* Hero Visual */
.hero-visual {
    position: relative;
}

.code-preview {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.preview-header {
    display: flex;
    align-items: center;
    padding: var(--space-4);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

.preview-dots {
    display: flex;
    gap: var(--space-2);
}

.preview-dots .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-light);
}

.preview-dots .dot:first-child { background: #ff5f57; }
.preview-dots .dot:nth-child(2) { background: #febc2e; }
.preview-dots .dot:last-child { background: #28c840; }

.preview-title {
    margin-left: auto;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.preview-content {
    padding: var(--space-6);
}

.code-line {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-1) 0;
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.code-line.highlight-line {
    background: rgba(16, 185, 129, 0.1);
    margin: 0 calc(var(--space-6) * -1);
    padding: var(--space-1) var(--space-6);
    border-left: 2px solid var(--accent);
}

.line-number {
    color: var(--text-muted);
    min-width: 20px;
    user-select: none;
}

.code .keyword { color: var(--purple); }
.code .variable { color: var(--text-primary); }
.code .property { color: var(--blue); }
.code .string { color: var(--accent); }
.code .function { color: var(--yellow); }

/* Floating Elements */
.floating-elements {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.float-card {
    position: absolute;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    font-size: 1.25rem;
    color: var(--accent);
    box-shadow: var(--shadow-lg);
    animation: float 6s ease-in-out infinite;
}

.float-1 {
    top: -20px;
    right: 60px;
    animation-delay: 0s;
}

.float-2 {
    bottom: 40px;
    right: -20px;
    animation-delay: -2s;
    color: var(--purple);
}

.float-3 {
    bottom: -20px;
    left: 40px;
    animation-delay: -4s;
    color: var(--orange);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* ========================================
   Features Section
   ======================================== */
.features-section {
    padding: var(--space-24) 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.features-header,
.tools-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-12);
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-4);
}

.section-label i {
    font-size: 0.75rem;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: var(--space-4);
}

.section-desc {
    font-size: 1rem;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

.feature-card {
    padding: var(--space-8);
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-5);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius-lg);
    font-size: 1.25rem;
    color: var(--accent);
    transition: all var(--transition-fast);
}

.feature-card:hover .feature-icon {
    background: var(--accent);
    color: white;
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--space-3);
}

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

/* ========================================
   Tools Section
   ======================================== */
.tools-section {
    padding: var(--space-24) 0;
}

.tools-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-10);
    position: relative;
    background: var(--bg-secondary);
    padding: var(--space-1);
    border-radius: var(--radius-full);
    border: 1px solid var(--border);
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.tab-btn {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-8);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    transition: color var(--transition-base);
    z-index: 1;
}

.tab-btn i {
    font-size: 0.875rem;
    transition: transform var(--transition-base);
}

.tab-btn:hover {
    color: var(--text-primary);
}

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

.tab-btn.active {
    color: white;
}

.tab-btn.active i {
    transform: scale(1.1);
}

/* Tab Slider Background */
.tabs-slider {
    position: absolute;
    top: var(--space-1);
    bottom: var(--space-1);
    left: var(--space-1);
    background: var(--accent);
    border-radius: var(--radius-full);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 0;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
    position: relative;
}

.tools-grid.hidden {
    display: none;
}

/* Tools Grid Animation */
.tools-grid.animate-in .tool-card {
    animation: cardSlideIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
}

.tools-grid.animate-in .tool-card:nth-child(1) { animation-delay: 0ms; }
.tools-grid.animate-in .tool-card:nth-child(2) { animation-delay: 80ms; }
.tools-grid.animate-in .tool-card:nth-child(3) { animation-delay: 160ms; }
.tools-grid.animate-in .tool-card:nth-child(4) { animation-delay: 240ms; }

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

.tools-grid.animate-out .tool-card {
    animation: cardSlideOut 0.3s cubic-bezier(0.4, 0, 1, 1) forwards;
}

@keyframes cardSlideOut {
    from {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    to {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
}

.tool-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.tool-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.tool-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: var(--space-6) var(--space-6) 0;
}

.tool-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    font-size: 1.25rem;
    color: var(--accent);
    transition: all var(--transition-fast);
}

.tool-icon.gradient-bg {
    background: var(--gradient-2);
    color: white;
}

.tool-card:hover .tool-icon:not(.gradient-bg) {
    background: var(--accent);
    color: white;
}

.tool-badge {
    padding: var(--space-1) var(--space-3);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tool-card-body {
    padding: var(--space-5) var(--space-6);
    flex: 1;
}

.tool-card-body h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--space-2);
}

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

.tool-card-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--border);
    background: var(--bg-tertiary);
}

.tool-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent);
    transition: gap var(--transition-fast);
}

.tool-card:hover .tool-link {
    gap: var(--space-3);
}

.tool-link i {
    font-size: 0.75rem;
    transition: transform var(--transition-fast);
}

.tool-card:hover .tool-link i {
    transform: translateX(4px);
}

/* ========================================
   About Section
   ======================================== */
.about-section {
    padding: var(--space-24) 0;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.about-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.3;
}

.about-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-12);
    align-items: center;
}

/* Profile Card */
.about-profile {
    position: relative;
}

.profile-card {
    position: relative;
    padding: var(--space-8);
    background: linear-gradient(145deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    text-align: center;
    overflow: hidden;
}

.profile-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: var(--gradient-1);
    opacity: 0.1;
}

.profile-glow {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    opacity: 0.4;
    pointer-events: none;
}

.profile-avatar {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto var(--space-5);
    border-radius: 50%;
    background: var(--gradient-1);
    padding: 4px;
    box-shadow: 0 0 40px var(--accent-glow);
}

.profile-avatar-inner {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--accent);
}

.profile-status {
    position: absolute;
    bottom: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    background: #28c840;
    border: 3px solid var(--bg-secondary);
    border-radius: 50%;
    animation: pulse-status 2s ease-in-out infinite;
}

@keyframes pulse-status {
    0%, 100% { box-shadow: 0 0 0 0 rgba(40, 200, 64, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(40, 200, 64, 0); }
}

.profile-name {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: var(--space-1);
    position: relative;
}

.profile-role {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: var(--space-6);
}

.profile-role i {
    font-size: 0.75rem;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    padding-top: var(--space-6);
    border-top: 1px solid var(--border);
    position: relative;
}

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

.profile-stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: var(--space-1);
}

.profile-stat-value span {
    color: var(--accent);
}

.profile-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.profile-social {
    display: flex;
    justify-content: center;
    gap: var(--space-3);
    margin-top: var(--space-6);
}

.profile-social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-size: 1.125rem;
    transition: all var(--transition-fast);
}

.profile-social-link:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
}

/* About Content */
.about-content {
    position: relative;
}

.about-content .section-label {
    margin-bottom: var(--space-4);
}

.about-content .section-title {
    text-align: left;
    margin-bottom: var(--space-6);
    font-size: clamp(1.75rem, 4vw, 2.25rem);
}

.about-intro {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-8);
    padding-left: var(--space-5);
    border-left: 3px solid var(--accent);
}

.about-intro strong {
    color: var(--text-primary);
}

.about-skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-8);
}

.skill-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.skill-tag:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.skill-tag i {
    font-size: 0.875rem;
    color: var(--accent);
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.highlight-card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.highlight-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 
        var(--shadow-lg),
        0 0 30px rgba(16, 185, 129, 0.15);
}

.highlight-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius-lg);
    color: var(--accent);
    font-size: 1.25rem;
    flex-shrink: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: visible;
}

.highlight-icon i {
    position: relative;
    z-index: 2;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.highlight-card:hover .highlight-icon {
    background: var(--accent);
    color: white;
}

.highlight-content h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--space-1);
}

.highlight-content p {
    font-size: 0.8125rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* About Visual (Terminal) - Hidden */
.about-visual {
    display: none;
}

/* Terminal Window */
.terminal-window {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.terminal-header {
    display: flex;
    align-items: center;
    padding: var(--space-4);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

.terminal-dots {
    display: flex;
    gap: var(--space-2);
}

.terminal-dots .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dots .dot.red { background: #ff5f57; }
.terminal-dots .dot.yellow { background: #febc2e; }
.terminal-dots .dot.green { background: #28c840; }

.terminal-title {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.terminal-title i {
    font-size: 0.625rem;
}

.terminal-body {
    padding: var(--space-6);
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.terminal-line {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.prompt {
    color: var(--accent);
    font-weight: 600;
}

.command {
    color: var(--text-primary);
}

.terminal-output {
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
    padding-left: var(--space-4);
}

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

.cursor {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    padding: var(--space-16) 0;
    border-top: 1px solid var(--border);
}

.cta-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-10) var(--space-12);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
}

.cta-content h2 {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: var(--space-2);
}

.cta-content p {
    color: var(--text-secondary);
}

/* ========================================
   Footer - Unique Modern Style
   ======================================== */
.footer {
    position: relative;
    background: var(--bg-primary);
    overflow: hidden;
}

.footer-glow {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
    opacity: 0.3;
    pointer-events: none;
}

.footer-main {
    position: relative;
    padding: var(--space-16) 0 var(--space-12);
    border-top: 1px solid var(--border);
}

/* Footer CTA */
.footer-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6) var(--space-8);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, rgba(52, 211, 153, 0.05) 100%);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-2xl);
    margin-bottom: var(--space-12);
}

.footer-cta-content {
    display: flex;
    align-items: center;
    gap: var(--space-5);
}

.footer-cta-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    border-radius: var(--radius-lg);
    font-size: 1.25rem;
    color: white;
}

.footer-cta-text h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.footer-cta-text p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Footer Grid */
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--space-10);
}

.footer-brand {
    max-width: 280px;
}

.footer-logo {
    display: inline-flex;
    margin-bottom: var(--space-4);
}

.footer-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.footer-desc strong {
    color: var(--accent);
}

.footer-social {
    display: flex;
    gap: var(--space-2);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
    transform: translateY(-2px);
}

/* Footer Links */
.footer-links h4 {
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: var(--space-5);
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links a {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.footer-links a i {
    font-size: 0.75rem;
    color: var(--text-muted);
    width: 16px;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--text-primary);
    transform: translateX(4px);
}

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

/* Footer Bottom */
.footer-bottom {
    position: relative;
    padding: var(--space-6) 0;
    border-top: 1px solid var(--border);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.copyright-text {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.copyright-text i {
    font-size: 0.75rem;
}

.copyright-divider {
    width: 4px;
    height: 4px;
    background: var(--border-light);
    border-radius: 50%;
}

.copyright-author {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.copyright-author a {
    color: var(--accent);
    font-weight: 600;
    transition: opacity var(--transition-fast);
}

.copyright-author a:hover {
    opacity: 0.8;
}

.footer-made {
    display: flex;
    align-items: center;
}

.made-text {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.made-text i.fa-heart {
    color: var(--red);
    animation: heartbeat 1.5s ease-in-out infinite;
}

.made-text i.fa-mug-hot {
    color: var(--orange);
}

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

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-wrapper {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }
    
    .about-profile {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .about-content {
        text-align: center;
    }
    
    .about-content .section-title {
        text-align: center;
    }
    
    .about-intro {
        border-left: none;
        border-top: 3px solid var(--accent);
        padding-left: 0;
        padding-top: var(--space-5);
    }
    
    .about-skills {
        justify-content: center;
    }
    
    .about-highlights {
        grid-template-columns: 1fr;
    }
    
    .highlight-card {
        text-align: left;
    }
    
    .footer-cta {
        flex-direction: column;
        text-align: center;
        gap: var(--space-6);
    }
    
    .footer-cta-content {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-brand {
        grid-column: span 2;
        max-width: 100%;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-links {
        text-align: center;
    }
    
    .footer-links a {
        justify-content: center;
    }
    
    .footer-links a:hover {
        transform: none;
    }
}

@media (max-width: 768px) {
    .header-container {
        max-width: calc(100% - var(--space-8));
        padding: 0 var(--space-3);
    }
    
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        min-height: auto;
        padding-top: calc(80px + var(--space-8));
        padding-bottom: var(--space-12);
    }
    
    .hero-container {
        padding: var(--space-8) var(--space-6);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-wrapper {
        flex-direction: column;
        text-align: center;
        gap: var(--space-6);
        padding: var(--space-8);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand {
        grid-column: span 1;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .footer-copyright {
        flex-direction: column;
        gap: var(--space-2);
    }
    
    .copyright-divider {
        display: none;
    }
}

@media (max-width: 480px) {
    .header-container {
        height: 48px;
        padding: 0 var(--space-3);
    }
    
    .logo-text {
        font-size: 1rem;
    }
    
    .logo-icon {
        width: 28px;
        height: 28px;
        font-size: 0.75rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: var(--space-4);
    }
    
    .stat-divider {
        display: none;
    }
    
    .tools-tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        width: 100%;
        justify-content: center;
    }
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav.mobile-open {
        display: flex !important;
        flex-direction: column;
        position: fixed;
        top: 72px;
        left: var(--space-4);
        right: var(--space-4);
        background: var(--bg-secondary);
        border: 1px solid var(--border);
        border-radius: var(--radius-xl);
        padding: var(--space-4);
        gap: var(--space-2);
        box-shadow: var(--shadow-xl);
    }
    
    .nav.mobile-open .nav-dropdown {
        width: 100%;
    }
    
    .nav.mobile-open .nav-btn,
    .nav.mobile-open .nav-link {
        width: 100%;
        justify-content: flex-start;
        padding: var(--space-3) var(--space-4);
        border-radius: var(--radius-lg);
    }
    
    .nav.mobile-open .dropdown-menu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        border: none;
        background: transparent;
        padding: 0;
        margin-top: var(--space-2);
        min-width: 100%;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
}

/* ========================================
   Tool Page Shared Styles
   ======================================== */
.tool-page {
    padding-top: 80px;
    min-height: 100vh;
}

.tool-header {
    padding: var(--space-10) 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.tool-header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.tool-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--space-4);
}

.tool-breadcrumb a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.tool-breadcrumb a:hover {
    color: var(--accent);
}

.tool-breadcrumb i {
    font-size: 0.625rem;
}

.tool-page-title {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-2);
}

.tool-page-title .tool-icon {
    width: 48px;
    height: 48px;
}

.tool-page-title h1 {
    font-size: 1.75rem;
    font-weight: 800;
}

.tool-page-desc {
    color: var(--text-secondary);
}

.tool-content {
    padding: var(--space-10) 0;
}

.tool-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Tool Workspace */
.tool-workspace {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
}

.tool-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-5);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

.panel-title {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    font-weight: 600;
}

.panel-title i {
    color: var(--accent);
    font-size: 0.875rem;
}

.panel-actions {
    display: flex;
    gap: var(--space-2);
}

.panel-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.panel-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-light);
}

.panel-btn.primary {
    color: white;
    background: var(--accent);
    border-color: var(--accent);
}

.panel-btn.primary:hover {
    background: var(--accent-hover);
}

.panel-body {
    padding: var(--space-5);
}

.tool-textarea {
    width: 100%;
    min-height: 350px;
    padding: var(--space-4);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    resize: vertical;
    transition: border-color var(--transition-fast);
}

.tool-textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.tool-output {
    min-height: 350px;
    padding: var(--space-4);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: auto;
}

@media (max-width: 768px) {
    .tool-workspace {
        grid-template-columns: 1fr;
    }
}