/* TechEdge Technical College - Ultra Modern Design System */

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

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

:root {
    /* Color System */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    --accent-400: #34d399;
    --accent-500: #10b981;
    --accent-600: #059669;

    --neutral-0: #ffffff;
    --neutral-100: #f5f5f5;
    --neutral-200: #e5e5e5;
    --neutral-300: #d4d4d4;
    --neutral-400: #a3a3a3;
    --neutral-500: #737373;
    --neutral-600: #525252;
    --neutral-700: #404040;
    --neutral-800: #262626;
    --neutral-900: #171717;

    /* Dark Theme Colors */
    --dark-bg-primary: #0a0a0f;
    --dark-bg-secondary: #0f0f1a;
    --dark-bg-tertiary: #141421;
    --dark-surface: #1a1a2e;
    --dark-surface-light: #2a2a3e;
    --dark-glass: rgba(255, 255, 255, 0.05);
    --dark-glass-hover: rgba(255, 255, 255, 0.08);
    --dark-border: rgba(255, 255, 255, 0.1);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-hero: radial-gradient(ellipse 120% 120% at 50% -20%, rgba(59, 130, 246, 0.15), transparent);
    --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(10, 10, 15, 0) 0%, rgba(10, 10, 15, 0.8) 100%);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.3);
    --shadow-glow-accent: 0 0 30px rgba(16, 185, 129, 0.3);
    --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.37);

    /* Typography */
    --font-primary: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* 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;
    --space-32: 8rem;

    /* Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base HTML & Body */
html {
    scroll-behavior: smooth;
    font-size: 16px;
    height: 100%;
}

body {
    font-family: var(--font-secondary);
    font-size: var(--text-base);
    font-weight: 400;
    line-height: 1.7;
    color: var(--neutral-300);
    background: var(--dark-bg-primary);
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    background-attachment: fixed;
    overflow-x: hidden;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Selection */
::selection {
    background: var(--primary-500);
    color: var(--neutral-0);
}

::-moz-selection {
    background: var(--primary-500);
    color: var(--neutral-0);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-600);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-500);
}

/* Focus States */
*:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

*:focus:not(:focus-visible) {
    outline: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 600;
    line-height: 1.2;
    color: var(--neutral-0);
    margin-bottom: var(--space-4);
}

h1 { font-size: var(--text-5xl); font-weight: 700; }
h2 { font-size: var(--text-4xl); font-weight: 600; }
h3 { font-size: var(--text-3xl); font-weight: 600; }
h4 { font-size: var(--text-2xl); font-weight: 500; }
h5 { font-size: var(--text-xl); font-weight: 500; }
h6 { font-size: var(--text-lg); font-weight: 500; }

.display-text {
    font-size: var(--text-6xl);
    font-weight: 800;
    line-height: 0.9;
    letter-spacing: -0.025em;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.lead-text {
    font-size: var(--text-xl);
    font-weight: 400;
    color: var(--neutral-400);
    line-height: 1.6;
}

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

p {
    margin-bottom: var(--space-4);
    color: var(--neutral-300);
    line-height: 1.7;
}

a {
    color: var(--primary-400);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--primary-300);
}

/* Layout Components */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section {
    padding: var(--space-24) 0;
    position: relative;
}

.section-hero {
    padding: var(--space-32) 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.section-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-hero);
    z-index: -1;
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-8);
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* Flex System */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Text Alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--dark-border);
    transition: var(--transition-normal);
}

header.scrolled {
    background: rgba(10, 10, 15, 0.95);
    box-shadow: var(--shadow-lg);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
}

.logo {
    font-family: var(--font-primary);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--neutral-0);
    text-decoration: none;
    transition: var(--transition-fast);
}

.logo:hover {
    color: var(--primary-400);
    transform: scale(1.05);
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-6);
}

.nav-link {
    color: var(--neutral-300);
    font-weight: 500;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-lg);
    transition: var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--neutral-0);
    background: var(--dark-glass);
}

.nav-link.active {
    color: var(--neutral-0);
    background: var(--dark-glass-hover);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--gradient-accent);
    border-radius: var(--radius-full);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--neutral-0);
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-secondary);
    font-size: var(--text-base);
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: var(--transition-normal);
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: var(--neutral-0);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: var(--dark-glass);
    color: var(--neutral-0);
    border: 1px solid var(--dark-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--dark-glass-hover);
    border-color: var(--primary-500);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-400);
    border: 2px solid var(--primary-500);
}

.btn-outline:hover {
    background: var(--primary-500);
    color: var(--neutral-0);
    transform: translateY(-2px);
}

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

/* Cards */
.card {
    background: var(--gradient-card);
    border: 1px solid var(--dark-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

.card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-500);
    box-shadow: var(--shadow-glow);
}

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

.card-header {
    margin-bottom: var(--space-6);
}

.card-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--neutral-0);
    margin-bottom: var(--space-2);
}

.card-description {
    color: var(--neutral-400);
    line-height: 1.6;
}

.card-feature {
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    text-align: center;
    transition: var(--transition-normal);
}

.card-feature:hover {
    transform: translateY(-4px);
    border-color: var(--accent-500);
    box-shadow: var(--shadow-glow-accent);
}

.card-feature .icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-accent);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-4);
    font-size: var(--text-2xl);
    color: var(--neutral-0);
}

/* Hero Section */
.hero {
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: var(--text-6xl);
    font-weight: 800;
    line-height: 0.9;
    margin-bottom: var(--space-6);
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--text-xl);
    color: var(--neutral-400);
    margin-bottom: var(--space-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* Stats Section */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-6);
    margin: var(--space-16) 0;
}

.stat {
    text-align: center;
    padding: var(--space-6);
    background: var(--dark-glass);
    border: 1px solid var(--dark-border);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
}

.stat-number {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--primary-400);
    display: block;
    margin-bottom: var(--space-2);
}

.stat-label {
    color: var(--neutral-400);
    font-weight: 500;
}

/* Features Grid */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
    margin: var(--space-16) 0;
}

/* Contact Form */
.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    color: var(--neutral-200);
    font-weight: 500;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--space-4);
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: var(--radius-lg);
    color: var(--neutral-0);
    font-family: var(--font-secondary);
    font-size: var(--text-base);
    transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
footer {
    background: var(--dark-bg-secondary);
    border-top: 1px solid var(--dark-border);
    padding: var(--space-16) 0 var(--space-8);
    margin-top: var(--space-24);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-section h4 {
    color: var(--neutral-0);
    margin-bottom: var(--space-4);
}

.footer-section p,
.footer-section li {
    color: var(--neutral-400);
    margin-bottom: var(--space-2);
}

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

.footer-section a {
    color: var(--neutral-400);
    transition: var(--transition-fast);
}

.footer-section a:hover {
    color: var(--primary-400);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--dark-border);
    color: var(--neutral-500);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

/* Utility Classes */
.text-primary { color: var(--primary-500); }
.text-accent { color: var(--accent-500); }
.text-white { color: var(--neutral-0); }
.text-gray { color: var(--neutral-400); }

.bg-glass {
    background: var(--dark-glass);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.border-glass {
    border: 1px solid var(--dark-border);
}

.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }

.shadow-glow { box-shadow: var(--shadow-glow); }

/* Page-specific styles */
.page-content {
    padding-top: 100px; /* Account for fixed header */
    min-height: calc(100vh - 100px);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-title {
        font-size: var(--text-5xl);
    }
    
    .display-text {
        font-size: var(--text-5xl);
    }
    
    .grid-cols-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    
    .grid-cols-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-4);
    }
    
    .section {
        padding: var(--space-16) 0;
    }
    
    .section-hero {
        padding: var(--space-20) 0;
        min-height: auto;
    }
    
    .hero-title {
        font-size: var(--text-4xl);
    }
    
    .display-text {
        font-size: var(--text-4xl);
    }
    
    .nav {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .card {
        padding: var(--space-6);
    }
    
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--text-3xl);
    }
    
    .display-text {
        font-size: var(--text-3xl);
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
    
    h1 { font-size: var(--text-3xl); }
    h2 { font-size: var(--text-2xl); }
    h3 { font-size: var(--text-xl); }
}