/* ============================================
   RESET & ROOT VARIABLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary Colors */
    --color-primary: #7c3aed;
    --color-primary-dark: #6d28d9;
    --color-primary-light: #a78bfa;
    --color-accent: #ec4899;
    
    /* Neutral Colors */
    --color-dark: #1f2937;
    --color-dark-light: #374151;
    --color-gray: #6b7280;
    --color-gray-light: #f3f4f6;
    --color-light: #ffffff;
    
    /* Semantic Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Typography */
    --font-family: 'Segoe UI', 'Roboto', sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-gray-light);
    color: var(--color-dark);
    line-height: 1.6;
    font-size: var(--font-size-base);
}

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

nav {
    background-color: var(--color-dark);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: background-color var(--transition-normal);
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto;
    gap: 0;
}

nav li {
    flex: 0 1 auto;
}

nav a {
    display: block;
    color: var(--color-light);
    text-decoration: none;
    padding: var(--spacing-md) var(--spacing-lg);
    transition: all var(--transition-normal);
    font-weight: 500;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background-color: var(--color-primary);
    transition: width var(--transition-normal);
}

nav a:hover {
    background-color: rgba(124, 58, 237, 0.1);
    color: var(--color-primary-light);
}

nav a:hover::after {
    width: 100%;
}

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

header {
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-light) 100%);
    color: var(--color-light);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

header > * {
    position: relative;
    z-index: 1;
}

header h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    letter-spacing: -1px;
}

header h1 strong {
    color: var(--color-primary-light);
    display: block;
    margin-top: var(--spacing-sm);
}

header h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    font-weight: 300;
    opacity: 0.9;
}

header h3 {
    font-size: var(--font-size-lg);
    font-weight: 500;
    opacity: 0.8;
}
/* ============================================
   FOOTER
   ============================================ */

footer {
    background-color: var(--color-dark);
    color: var(--color-light);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    margin-top: var(--spacing-xl);
    border-top: 3px solid var(--color-primary);
}

footer p {
    margin-bottom: var(--spacing-sm);
    opacity: 0.9;
    font-size: var(--font-size-sm);
}

footer a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: color var(--transition-normal);
    font-weight: 500;
}

footer a:hover {
    color: var(--color-light);
    text-decoration: underline;
}

.social-links {
    margin-top: var(--spacing-lg);
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    border-radius: 50%;
    transition: all var(--transition-normal);
    padding: 0;
}

.social-links a:hover {
    background-color: var(--color-accent);
    transform: translateY(-4px) scale(1.1);
    box-shadow: 0 8px 20px rgba(124, 58, 237, 0.4);
}

.social-links a img {
    width: 24px;
    height: 24px;
    display: block;
    filter: brightness(1);
    transition: filter var(--transition-normal);
}

.social-links a:hover img {
    filter: brightness(1.2);
}

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

.clear {
    clear: both;
}

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

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

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

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top