/*=============================================
   THEME.CSS - Futuristic Education Platform
   Color Scheme: Navy Blue, Luxury Red, Milk
=============================================*/

:root {
    /* Primary Colors */
    --navy-primary: #0a1929;
    --navy-secondary: #0d2137;
    --navy-dark: #061220;
    --navy-light: #1a3650;
    
    /* Luxury Red */
    --luxury-red: #c41e3a;
    --luxury-red-dark: #a01830;
    --luxury-red-light: #e82345;
    --luxury-red-glow: rgba(196, 30, 58, 0.3);
    
    /* Milk */
    --milk: #faf8f5;
    --milk-dark: #f0ebe3;
    --milk-darker: #e5ddd2;
    
    /* Accent Colors */
    --gold-accent: #d4a843;
    --gold-light: #f0d78c;
    
    /* Text Colors */
    --text-primary: #faf8f5;
    --text-secondary: #b8c5d0;
    --text-muted: #7a8b9a;
    --text-dark: #1a1a2e;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--navy-primary) 0%, var(--navy-secondary) 100%);
    --gradient-luxury: linear-gradient(135deg, var(--luxury-red) 0%, var(--luxury-red-dark) 100%);
    --gradient-milk: linear-gradient(135deg, var(--milk) 0%, var(--milk-dark) 100%);
    --gradient-hero: linear-gradient(135deg, var(--navy-primary) 0%, var(--luxury-red-dark) 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(10, 25, 41, 0.15);
    --shadow-md: 0 8px 24px rgba(10, 25, 41, 0.2);
    --shadow-lg: 0 16px 48px rgba(10, 25, 41, 0.3);
    --shadow-red: 0 8px 32px rgba(196, 30, 58, 0.25);
    --glow-red: 0 0 20px rgba(196, 30, 58, 0.4);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 50%;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Font Families */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Space Grotesk', 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
}

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

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

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

/* Animated Background Effect */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 50%, var(--luxury-red-glow) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(26, 54, 80, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, var(--luxury-red-glow) 0%, transparent 50%);
    z-index: -1;
    animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

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

a {
    color: var(--luxury-red-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--gold-accent);
}

/* Selection Style */
::selection {
    background: var(--luxury-red);
    color: var(--milk);
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--luxury-red);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--luxury-red-light);
}

/* Utility Classes */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

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

/* Responsive Container */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
}