/* ============================================
   成都永亿信科技有限公司 - 现代化网站样式
   Modern Website Styles for CDYYX Technology
   ============================================ */

/* CSS Variables - Design Tokens */
:root {
    /* Colors - Enhanced Modern Palette */
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --color-secondary: #8b5cf6;
    --color-accent: #06b6d4;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);
    
    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-tertiary: #f5f5f5;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --bg-gradient-start: #1e293b;
    --bg-gradient-end: #0f172a;
    
    /* Text Colors */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-light: #94a3b8;
    --text-invert: #f8fafc;
    --text-invert-secondary: #cbd5e1;
    
    /* Borders */
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    --border-dark: #94a3b8;
    
    /* Shadows - Enhanced */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06), 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    --shadow-glow-lg: 0 0 60px rgba(99, 102, 241, 0.4);
    --shadow-colored: 0 10px 40px -10px rgba(99, 102, 241, 0.5);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    
    /* Border Radius */
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 80px;
    --space-5xl: 96px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-display: 'Space Grotesk', var(--font-sans);
    
    /* Container */
    --container-max: 1200px;
    --container-lg: 1400px;
    
    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: clamp(1.125rem, 2.5vw, 1.5rem); }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-base);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

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

.container-lg {
    max-width: var(--container-lg);
}

.container-sm {
    max-width: 800px;
}

/* ============================================
   HEADER / NAVIGATION
   ============================================ */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition-base);
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    border-bottom-color: rgba(99, 102, 241, 0.1);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    gap: var(--space-lg);
}

/* Logo */
.logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    transition: var(--transition-base);
    text-decoration: none;
}

.logo img {
    height: 65px;
    border-radius: 6px;
    width: auto;
    max-width: 200px;
    display: block;
    object-fit: contain;
}

.logo:hover {
    filter: brightness(1.1);
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    box-shadow: var(--shadow-colored);
    position: relative;
    overflow: hidden;
}

.logo-icon::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.3) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.logo:hover .logo-icon::before {
    transform: translateX(100%);
}

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

.site-nav a {
    position: relative;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    overflow: hidden;
}

.site-nav a::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-base);
    border-radius: var(--radius-md);
    z-index: -1;
}

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

.site-nav a:hover {
    color: var(--color-primary);
    transform: translateY(-1px);
}

.site-nav a:not(.active):hover::before {
    opacity: 0.08;
}

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

.site-nav a.active {
    color: var(--color-primary);
    background: rgba(99, 102, 241, 0.08);
}

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

/* ============================================
   THEME TOGGLE
   ============================================ */

.theme-toggle-wrapper {
    display: flex;
    align-items: center;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
    position: relative;
    color: var(--text-primary);
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
    border-color: var(--color-primary);
}

.theme-toggle i {
    font-size: 1.125rem;
}

.theme-icon-dark {
    display: none;
}

.theme-icon-auto {
    display: block;
}

/* Theme Dropdown */
.theme-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    min-width: 140px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-base);
    z-index: var(--z-dropdown);
    overflow: hidden;
}

.theme-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.theme-option {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
    color: #1e293b;
    font-size: 0.9375rem;
    font-weight: 500;
    text-align: left;
}

.theme-option:hover {
    background: #f8fafa;
}

.theme-option.active {
    background: rgba(99, 102, 241, 0.1);
    color: #6366f1;
    font-weight: 600;
}

.theme-option i {
    width: 18px;
    text-align: center;
    color: #1e293b;
    font-size: 1rem;
}

/* ============================================
   DARK MODE STYLES
   ============================================ */

/* Dark theme applied via data-theme attribute */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-dark: #020617;
    --bg-darker: #000000;

    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-light: #64748b;

    --border-light: rgba(255, 255, 255, 0.1);
    --border-medium: rgba(255, 255, 255, 0.15);
    --border-dark: rgba(255, 255, 255, 0.2);

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .site-header {
    background: rgba(15, 23, 42, 0.9);
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .site-header.scrolled {
    background: rgba(15, 23, 42, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    border-bottom-color: rgba(99, 102, 241, 0.2);
}

[data-theme="dark"] .logo {
    background: linear-gradient(135deg, #818cf8 0%, #a78bfa 50%, #22d3ee 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="dark"] .logo-icon {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

[data-theme="dark"] .site-nav a {
    color: var(--text-secondary);
}

[data-theme="dark"] .site-nav a:hover {
    color: var(--color-primary-light);
}

[data-theme="dark"] .site-nav a.active {
    color: var(--color-primary-light);
    background: rgba(99, 102, 241, 0.2);
}

[data-theme="dark"] .theme-toggle {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
    color: var(--text-primary);
}

[data-theme="dark"] .theme-toggle:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--color-primary);
}

[data-theme="dark"] .theme-dropdown {
    background: #1e293b;
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .theme-option {
    color: #f1f5f9;
}

[data-theme="dark"] .theme-option:hover {
    background: #334155;
}

[data-theme="dark"] .theme-option.active {
    background: rgba(99, 102, 241, 0.2);
    color: #818cf8;
}

[data-theme="dark"] .theme-option i {
    color: #f1f5f9;
}

[data-theme="dark"] .mobile-menu-toggle {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
}

[data-theme="dark"] .mobile-menu-toggle span {
    background: var(--text-primary);
}

[data-theme="dark"] .mobile-nav {
    background: var(--bg-primary);
}

[data-theme="dark"] .mobile-nav a {
    color: var(--text-primary);
    border-bottom-color: var(--border-light);
}

[data-theme="dark"] .mobile-nav a.active {
    color: var(--color-primary-light);
}

/* Card styles in dark mode */
[data-theme="dark"] .card,
[data-theme="dark"] .feature-card {
    background: var(--bg-secondary);
    border-color: var(--border-light);
}

[data-theme="dark"] .card:hover,
[data-theme="dark"] .feature-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .card-title,
[data-theme="dark"] .feature-card h3 {
    color: var(--text-primary);
}

[data-theme="dark"] .card:hover .card-title {
    color: var(--color-primary-light);
}

/* Form styles in dark mode */
[data-theme="dark"] .form-input,
[data-theme="dark"] .form-textarea {
    background: rgba(30, 41, 59, 0.8);
    border-color: var(--border-light);
    color: var(--text-primary);
}

[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .form-textarea:focus {
    border-color: var(--color-primary);
    background: var(--bg-tertiary);
}

[data-theme="dark"] .form-input::placeholder,
[data-theme="dark"] .form-textarea::placeholder {
    color: var(--text-light);
}

[data-theme="dark"] .form-label {
    color: var(--text-primary);
}

/* Section light variant in dark mode */
[data-theme="dark"] .section-light {
    background: #0f172a;
}

[data-theme="dark"] .section-gray {
    background: #1e293b;
}

/* Stats section text */
[data-theme="dark"] .stats-section {
    background: linear-gradient(135deg, #020617 0%, #000000 100%);
}

[data-theme="dark"] .stat-label {
    color: rgba(255, 255, 255, 0.6);
}

/* Footer styles in dark mode */
[data-theme="dark"] .site-footer {
    background: #000000;
}

[data-theme="dark"] .site-footer h3 {
    color: var(--text-primary);
}

[data-theme="dark"] .footer-links a:hover {
    color: var(--color-primary-light);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    gap: 5px;
    transition: var(--transition-base);
}

.mobile-menu-toggle:hover {
    background: var(--bg-tertiary);
}

.mobile-menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    padding: var(--space-lg);
    overflow-y: auto;
    z-index: var(--z-fixed);
    transform: translateY(-100%);
    transition: transform var(--transition-slow);
}

.mobile-nav.active {
    transform: translateY(0);
}

.mobile-nav a {
    display: block;
    padding: var(--space-md);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-light);
}

.mobile-nav a.active {
    color: var(--color-primary);
}

/* ============================================
   HERO SECTION - Tech Company Style
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 50%, #dee2e6 100%);
    color: var(--text-primary);
    overflow: hidden;
    padding: 120px 0 80px;
}

[data-theme="dark"] .hero {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    color: var(--text-invert);
}

/* Hero Background Effects - Tech Style */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
    animation: pulseGlow 8s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    animation: slideLine 3s ease-in-out infinite;
}

[data-theme="dark"] .hero::before {
    background:
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
}

@keyframes pulseGlow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

@keyframes slideLine {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* Hero Grid Pattern - Tech Grid */
.hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

[data-theme="dark"] .hero-bg-grid {
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.05) 1px, transparent 1px);
}

/* Floating Particles */
.hero-bg-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-bg-particles::before,
.hero-bg-particles::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: floatParticle 20s infinite;
    box-shadow: 0 0 20px var(--color-primary);
}

.hero-bg-particles::before {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.hero-bg-particles::after {
    top: 60%;
    right: 20%;
    animation-delay: 5s;
}

@keyframes floatParticle {
    0%, 100% { transform: translate(0, 0); }
    25% { transform: translate(50px, -30px); }
    50% { transform: translate(100px, 0); }
    75% { transform: translate(50px, 30px); }
}

/* Hero Content */
.hero .container {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--color-primary);
    backdrop-filter: blur(10px);
    margin-bottom: var(--space-lg);
    animation: fadeUp 0.6s ease both;
    box-shadow: 0 2px 10px rgba(99, 102, 241, 0.15);
    font-weight: 500;
    letter-spacing: 0.05em;
}

[data-theme="dark"] .hero-badge {
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--color-primary-light);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.hero-badge i {
    color: var(--color-accent);
    animation: pulse 2s ease-in-out infinite;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.03em;
    animation: fadeUp 0.6s ease both 0.1s;
    animation-fill-mode: both;
}

.hero h1 span {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    display: inline-block;
    font-weight: 800;
}

.hero h1 span::after {
    content: attr(data-text);
    position: absolute;
    left: 0;
    top: 0;
    background: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0;
    animation: shimmer 4s ease-in-out infinite;
}

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

.hero p {
    font-size: clamp(1.125rem, 2.5vw, 1.375rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: var(--space-2xl);
    animation: fadeUp 0.6s ease both 0.2s;
    animation-fill-mode: both;
    line-height: 1.8;
    font-weight: 400;
}

[data-theme="dark"] .hero p {
    color: rgba(255, 255, 255, 0.75);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    animation: fadeUp 0.6s ease both 0.3s;
    animation-fill-mode: both;
}

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

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    line-height: 1;
    text-align: center;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-base);
    user-select: none;
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.98);
}

/* Primary Button */
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
    position: relative;
    overflow: hidden;
    font-weight: 600;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

/* Secondary Button */
.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    font-weight: 500;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* Secondary button in light mode */
html:not([data-theme="dark"]) .hero .btn-secondary {
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

html:not([data-theme="dark"]) .hero .btn-secondary:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
}

/* Outline Button */
.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-outline::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-base);
    z-index: -1;
}

.btn-outline:hover {
    color: white;
    border-color: transparent;
}

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

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--text-primary);
}

.btn-ghost:hover {
    background: var(--bg-secondary);
}

/* Button Sizes */
.btn-sm {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
}

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1.125rem;
}

/* ============================================
   SECTIONS
   ============================================ */

.section {
    padding: var(--space-5xl) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-4xl);
}

.section-header h2 {
    margin-bottom: var(--space-md);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-tertiary);
}

.section-header .section-subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

/* Section Variants */
.section-light {
    background: #fafafa;
}

.section-gray {
    background: #f8f9fa;
}

.section-dark {
    background: var(--bg-dark);
    color: var(--text-invert);
}

.section-dark h2,
.section-dark h3,
.section-dark p {
    color: var(--text-invert);
}

.section-dark p {
    color: var(--text-invert-secondary);
}

/* ============================================
   GRID SYSTEM
   ============================================ */

.grid {
    display: grid;
    gap: var(--space-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-auto-sm {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ============================================
   CARDS - Modern Minimal Style
   ============================================ */

.card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: var(--transition-base);
    position: relative;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
    border-color: rgba(99, 102, 241, 0.2);
}

.card-image {
    position: relative;
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: var(--bg-secondary);
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: fill;
    transition: transform var(--transition-slow);
}

.card:hover .card-image img {
    transform: scale(1.03);
}

.card-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f5f5f5 0%, #fafafa 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
}

.card-image-placeholder i {
    font-size: 2.5rem;
    opacity: 0.4;
}

.card-content {
    padding: var(--space-lg);
    position: relative;
}

.card-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    transition: var(--transition-base);
}

.card:hover .card-icon {
    transform: scale(1.05);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    transition: var(--transition-base);
    line-height: 1.4;
}

.card:hover .card-title {
    color: var(--color-primary);
}

.card-text {
    font-size: 0.9375rem;
    color: var(--text-tertiary);
    line-height: 1.7;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-light);
    font-size: 0.875rem;
    color: var(--text-light);
}

.card-meta i {
    color: var(--color-primary);
}

/* Card Variants */
.card-elevated {
    box-shadow: var(--shadow-sm);
}

.card-elevated:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.card-featured {
    border: 2px solid var(--color-primary);
}

/* ============================================
   FEATURE CARDS - Tech Style
   ============================================ */

.feature-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border-light);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

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

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
}

.feature-card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    position: relative;
    z-index: 1;
    transition: var(--transition-base);
}

.feature-card:hover .feature-card-icon {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    position: relative;
    z-index: 1;
    font-weight: 600;
    color: var(--text-primary);
}

.feature-card p {
    position: relative;
    z-index: 1;
    color: var(--text-tertiary);
    line-height: 1.7;
}

/* ============================================
   STATS SECTION - Tech Style
   ============================================ */

.stats-section {
    background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);
    color: var(--text-primary);
    padding: var(--space-4xl) 0;
    position: relative;
    overflow: hidden;
    border-top: 1px solid rgba(99, 102, 241, 0.1);
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
}

[data-theme="dark"] .stats-section {
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    color: white;
    border-top: 1px solid rgba(99, 102, 241, 0.2);
    border-bottom: 1px solid rgba(99, 102, 241, 0.2);
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.03) 0%, transparent 50%);
}

[data-theme="dark"] .stats-section::before {
    background:
        radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    text-align: center;
    position: relative;
    z-index: 1;
}

.stat-item {
    padding: var(--space-lg);
    position: relative;
    transition: var(--transition-base);
}

.stat-item::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 60%;
    background: linear-gradient(180deg, transparent, rgba(99, 102, 241, 0.2), transparent);
}

[data-theme="dark"] .stat-item::after {
    background: linear-gradient(180deg, transparent, rgba(99, 102, 241, 0.3), transparent);
}

.stat-item:last-child::after {
    display: none;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: var(--space-sm);
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: var(--transition-base);
}

.stat-item:hover .stat-number {
    transform: scale(1.1);
    display: inline-block;
}

.stat-label {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

[data-theme="dark"] .stat-label {
    color: rgba(255, 255, 255, 0.7);
}

/* ============================================
   FORMS - Enhanced
   ============================================ */

.form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    font-size: 0.9375rem;
}

.form-label span {
    color: var(--color-danger);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--space-md);
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-light);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-actions {
    margin-top: var(--space-xl);
}

/* Alert Messages */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    text-align: center;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
    background: var(--bg-darker);
    color: var(--text-invert-secondary);
    padding: var(--space-5xl) 0 var(--space-lg);
}

.site-footer h3 {
    color: var(--text-invert);
    font-size: 1.25rem;
    margin-bottom: var(--space-lg);
}

.site-footer p {
    color: var(--text-invert-secondary);
    font-size: 0.9375rem;
    line-height: 1.8;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-4xl);
}

.footer-brand .logo {
    color: var(--text-invert);
    margin-bottom: var(--space-md);
    display: inline-block;
}

.footer-brand .logo img {
    height: 50px;
    width: auto;
}

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

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

.footer-links a {
    color: var(--text-invert-secondary);
    font-size: 0.9375rem;
    transition: var(--transition-base);
}

.footer-links a:hover {
    color: var(--color-primary);
    padding-left: var(--space-sm);
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.footer-contact i {
    color: var(--color-primary);
    width: 20px;
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-light);
}

/* ============================================
   ABOUT PAGE STYLES
   ============================================ */

.about-hero {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    color: var(--text-invert);
    padding: 140px 0 var(--space-5xl);
    text-align: center;
}

.about-hero h1 {
    color: var(--text-invert);
    margin-bottom: var(--space-lg);
}

.about-hero p {
    color: var(--text-invert-secondary);
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-4xl) 0;
}

.about-content p {
    font-size: 1.125rem;
    line-height: 1.9;
    margin-bottom: var(--space-lg);
}

.about-features {
    margin-top: var(--space-3xl);
}

.about-features h3 {
    margin-bottom: var(--space-lg);
}

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

.about-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.about-features li i {
    color: var(--color-success);
    font-size: 1.25rem;
    margin-top: 2px;
}

/* ============================================
   CONTACT PAGE STYLES
   ============================================ */

.contact-hero {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    color: var(--text-invert);
    padding: 140px 0 var(--space-5xl);
    text-align: center;
}

.contact-hero h1 {
    color: var(--text-invert);
    margin-bottom: var(--space-md);
}

.contact-hero p {
    color: var(--text-invert-secondary);
    font-size: 1.125rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-4xl);
    margin-top: var(--space-4xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
}

.contact-item-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-item-content h4 {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
}

.contact-item-content p {
    font-size: 0.9375rem;
    color: var(--text-tertiary);
}

.contact-form-wrapper {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-light);
}

/* ============================================
   NEWS PAGE STYLES
   ============================================ */

.news-hero {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    color: var(--text-invert);
    padding: 140px 0 var(--space-5xl);
    text-align: center;
}

.news-hero h1 {
    color: var(--text-invert);
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-4xl);
}

.pagination a,
.pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 var(--space-md);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.pagination a {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.pagination a:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.pagination span.current {
    background: var(--color-primary);
    color: white;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --container-max: 960px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2xl);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-3xl);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --container-max: 100%;
    }
    
    .site-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-nav {
        display: block;
    }
    
    .hero {
        text-align: center;
        padding: 100px 0 60px;
        min-height: auto;
    }
    
    .hero .container {
        padding: 0 var(--space-md);
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .grid-auto,
    .grid-auto-sm {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: var(--space-3xl) 0;
    }
    
    .section-header {
        margin-bottom: var(--space-3xl);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .about-features ul {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrapper {
        padding: var(--space-lg);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .site-header .container {
        height: 70px;
    }
    
    .logo {
        font-size: 1.25rem;
    }
    
    .logo-icon {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .btn {
        width: 100%;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .card-content {
        padding: var(--space-md);
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-tertiary); }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mt-4 { margin-top: var(--space-xl); }
.mt-5 { margin-top: var(--space-2xl); }

.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mb-4 { margin-bottom: var(--space-xl); }
.mb-5 { margin-bottom: var(--space-2xl); }

.p-1 { padding: var(--space-sm); }
.p-2 { padding: var(--space-md); }
.p-3 { padding: var(--space-lg); }
.p-4 { padding: var(--space-xl); }
.p-5 { padding: var(--space-2xl); }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-xl); }
.shadow-none { box-shadow: none; }

.bg-white { background: var(--bg-primary); }
.bg-gray { background: var(--bg-secondary); }

.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-sm); }
.gap-2 { gap: var(--space-md); }
.gap-3 { gap: var(--space-lg); }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

/* Animations */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* ============================================
   SCROLL ANIMATIONS - Enhanced
   ============================================ */

/* Fade In Up Animation */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Fade In Left Animation */
.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Fade In Right Animation */
.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Scale In Animation */
.scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* Staggered Animation Delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* ============================================
   ADDITIONAL ENHANCEMENTS
   ============================================ */

/* Smooth Scroll Behavior for Anchor Links */
html {
    scroll-behavior: smooth;
}

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

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

/* Focus Visible for Accessibility */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: var(--radius-full);
}

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

/* Image Hover Zoom Effect */
.img-hover-zoom {
    overflow: hidden;
}

.img-hover-zoom img {
    transition: transform var(--transition-slow);
}

.img-hover-zoom:hover img {
    transform: scale(1.1);
}

/* Glassmorphism Effect */
.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Gradient Text */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Floating Animation */
@keyframes floating {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.floating {
    animation: floating 3s ease-in-out infinite;
}

/* Glow Effect */
.glow {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
    transition: var(--transition-base);
}

.glow:hover {
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.8);
}

/* Ribbon Badge */
.ribbon {
    position: absolute;
    top: 20px;
    right: -35px;
    transform: rotate(45deg);
    background: var(--gradient-primary);
    color: white;
    padding: 8px 40px;
    font-size: 0.75rem;
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

/* Tooltip */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-dark);
    color: white;
    font-size: 0.75rem;
    white-space: nowrap;
    border-radius: var(--radius-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    pointer-events: none;
}

[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-4px);
}

/* ============================================
   RESPONSIVE ENHANCEMENTS
   ============================================ */

@media (max-width: 768px) {
    .stat-item::after {
        display: none;
    }

    .hero h1 {
        font-size: 2.5rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}