/* 2013-Style Modern CSS Framework */

/* Mobile-first responsive design */
@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .section {
        padding: 30px 0;
    }
}

/* Touch-friendly interactions */
@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .nav-link {
        padding: 12px 18px;
    }
}

/* Performance Optimizations */
* {
    box-sizing: border-box;
}

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

/* Optimize font loading */
@font-face {
    font-display: swap;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Focus management for accessibility */
:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-blue);
    color: var(--white);
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 9999;
}

.skip-link:focus {
    top: 6px;
}

* {
    margin: 0;
    padding: 0;
}

:root {
    /* 2013-inspired color palette based on hero image */
    --primary-blue: #2980b9;
    --primary-blue-dark: #1e5f8a;
    --primary-blue-light: #3498db;
    --secondary-blue: #34495e;
    --accent-orange: #e67e22;
    --accent-green: #27ae60;
    --neutral-dark: #2c3e50;
    --neutral-medium: #7f8c8d;
    --neutral-light: #bdc3c7;
    --white: #ffffff;
    --light-gray: #ecf0f1;
    --success: #2ecc71;
    --warning: #f39c12;
    --error: #e74c3c;
    
    /* Typography */
    --font-primary: 'Roboto', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;
    
    /* 2013 Design Elements */
    --border-radius: 8px;
    --border-radius-large: 15px;
    --shadow-subtle: 0 2px 5px rgba(0,0,0,0.1);
    --shadow-medium: 0 4px 15px rgba(0,0,0,0.15);
    --shadow-strong: 0 6px 25px rgba(0,0,0,0.25);
    --gradient-blue: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    --gradient-dark: linear-gradient(135deg, var(--neutral-dark) 0%, var(--secondary-blue) 100%);
    --gradient-light: linear-gradient(135deg, var(--light-gray) 0%, var(--white) 100%);
}

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

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

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--primary-blue-dark);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    color: var(--secondary-blue);
    margin-bottom: 1rem;
}

h3 {
    font-size: clamp(1.2rem, 3vw, 1.6rem);
    color: var(--neutral-dark);
    margin-bottom: 0.8rem;
}

p {
    margin-bottom: 1rem;
    font-size: 1rem;
    line-height: 1.7;
}

/* Container and Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 60px 0;
}

.section-alt {
    background: var(--white);
}

/* Buttons - 2013 Style */
.btn {
    display: inline-block;
    padding: 14px 28px;
    background: var(--gradient-blue);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-medium);
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-strong);
    background: linear-gradient(135deg, var(--primary-blue-dark) 0%, var(--primary-blue) 100%);
}

.btn:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--gradient-dark);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent-orange) 0%, #d35400 100%);
}

/* Cards - 2013 Style */
.card {
    background: var(--white);
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-medium);
    padding: 30px;
    transition: all 0.3s ease;
    border: 1px solid rgba(52, 73, 94, 0.1);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-strong);
}

/* Grid System */
.grid {
    display: grid;
    gap: 30px;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Responsive Design */
@media (max-width: 768px) {
    .section {
        padding: 40px 0;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    .card {
        padding: 20px;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

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

/* Loading States */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    to {
        left: 100%;
    }
}