/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Screen Reader Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles for accessibility */
*:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: #667eea;
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1001;
}

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

/* Header Styles - Clean and Modern */
.header {
    background: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid #e5e7eb;
}

.nav {
    padding: 1rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo a {
    text-decoration: none;
    color: #1f2937;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: color 0.3s ease;
}

.nav-logo a:hover {
    color: #667eea;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: white;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.025em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu li a {
    text-decoration: none;
    color: #6b7280;
    font-weight: 500;
    font-size: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu li a:hover {
    color: #667eea;
    background-color: #f3f4f6;
}

.nav-menu li a.active {
    color: #667eea;
    background-color: #eff6ff;
}

/* Mobile Navigation */
.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: #6b7280;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* Hero Section - Clean and Modern */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0 3rem 0;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/><circle cx="10" cy="60" r="0.5" fill="white" opacity="0.1"/><circle cx="90" cy="40" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.2;
}

.hero-container {
    position: relative;
    z-index: 1;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    font-weight: 400;
    line-height: 1.4;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Search and Filter - Modern Card Design */
.search-filter {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    margin-top: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.search-filter-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 1.5rem;
    align-items: end;
}

.search-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group label, .search-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: #374151;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-group select, .search-group input {
    padding: 0.875rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    background: white;
    color: #374151;
    transition: all 0.3s ease;
    font-weight: 500;
}

.filter-group select:hover, .search-group input:hover {
    border-color: #d1d5db;
}

.filter-group select:focus, .search-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.search-group input::placeholder {
    color: #9ca3af;
    font-weight: 400;
}

/* Section Styles */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: #1f2937;
    letter-spacing: -0.025em;
}

.experience-count {
    text-align: center;
    color: #6b7280;
    font-size: 1.1rem;
    margin-bottom: 2rem;
    font-weight: 500;
}

/* Experiences Grid */
.experiences {
    padding: 4rem 0;
    background-color: #f9fafb;
}

.experiences-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.experience-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: block;
    border: 1px solid #e5e7eb;
}

.experience-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.1);
    border-color: #d1d5db;
}

.experience-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.experience-card:hover .experience-image {
    transform: scale(1.02);
}

.experience-content {
    padding: 1.5rem;
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.experience-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
    margin: 0;
    line-height: 1.3;
}

.experience-cost {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.experience-headline {
    color: #6b7280;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.experience-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
}

.experience-type {
    background-color: #f3f4f6;
    color: #374151;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 500;
}

.experience-duration {
    color: #6b7280;
    font-weight: 500;
}

/* About Section */
.about {
    padding: 4rem 0;
    background: white;
}

.about-text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.125rem;
    line-height: 1.7;
    color: #4b5563;
}

/* Footer */
.footer {
    background-color: #1f2937;
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    margin: 0;
    opacity: 0.8;
}

/* No Results */
.no-results {
    text-align: center;
    padding: 3rem;
    color: #6b7280;
}

.no-results h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #374151;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .search-filter {
        margin: 1.5rem 1rem 0 1rem;
        padding: 1.5rem;
    }
    
    .search-filter-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .experiences-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
    }
    
    .nav-logo a {
        font-size: 1.25rem;
    }
    
    .logo-icon {
        width: 28px;
        height: 28px;
        font-size: 14px;
    }
    
    .search-filter {
        padding: 1rem;
        margin: 1rem;
    }
    
    .filter-group select, .search-group input {
        padding: 0.75rem 0.875rem;
        font-size: 0.95rem;
    }
}

/* Loading States */
.loaded {
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}