/* Design Fixes for AI Sport Website */
/* Addressing navigation, layout, and visual design issues */

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #1a1a1a;
    background: #ffffff;
    overflow-x: hidden;
}

/* Navigation Fixes */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.brand-logo {
    width: 40px;
    height: 40px;
    margin-right: 12px;
}

.brand-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
    text-decoration: none;
}

/* Fix Navigation Menu - Remove Colored Boxes */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    color: #374151;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    /* Remove any background colors or borders */
    background: none !important;
    border: none !important;
    box-shadow: none !important;
}

.nav-link:hover {
    color: #2563eb;
    background: rgba(37, 99, 235, 0.1);
    transform: translateY(-1px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: #2563eb;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* Language Switcher */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.language-switcher {
    display: flex;
    align-items: center;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 8px;
    padding: 4px;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.language-btn {
    padding: 6px 12px;
    border: none;
    background: none;
    color: #6b7280;
    font-weight: 500;
    font-size: 0.875rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.language-btn.active {
    background: #2563eb;
    color: white;
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3);
}

.language-btn:hover:not(.active) {
    background: rgba(37, 99, 235, 0.1);
    color: #2563eb;
}

.theme-toggle {
    padding: 8px;
    border: none;
    background: rgba(107, 114, 128, 0.1);
    color: #6b7280;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background: rgba(107, 114, 128, 0.2);
    color: #374151;
    transform: rotate(180deg);
}

/* Hero Section Improvements */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-section::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="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ffffff 0%, #e0e7ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

/* Button Improvements */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    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, 0.2), transparent);
    transition: left 0.5s ease;
}

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

.btn-primary {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.5);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

/* Target Groups Section */
.target-groups {
    padding: 6rem 0;
    background: #f8fafc;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #1e293b 0%, #475569 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.125rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

.target-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.target-card {
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.target-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
}

.target-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.target-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
    font-size: 1.5rem;
}

.target-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
}

.target-description {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.target-features {
    list-style: none;
    margin-bottom: 2rem;
}

.target-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: #374151;
}

.target-features li::before {
    content: '✓';
    width: 20px;
    height: 20px;
    background: #10b981;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: bold;
    flex-shrink: 0;
}

.target-cta {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.target-cta:hover {
    transform: translateX(4px);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

/* Stats Section */
.stats-section {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    color: white;
    padding: 4rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.8;
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 1rem;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .nav-link {
        padding: 0.5rem;
        font-size: 0.875rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .target-grid {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 2rem;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    body {
        background: #0f172a;
        color: #e2e8f0;
    }
    
    .navbar {
        background: rgba(15, 23, 42, 0.95);
        border-bottom-color: rgba(255, 255, 255, 0.1);
    }
    
    .nav-link {
        color: #cbd5e1;
    }
    
    .nav-link:hover {
        color: #60a5fa;
        background: rgba(96, 165, 250, 0.1);
    }
    
    .target-groups {
        background: #1e293b;
    }
    
    .target-card {
        background: #334155;
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    .target-title {
        color: #f1f5f9;
    }
    
    .target-description {
        color: #cbd5e1;
    }
    
    .target-features li {
        color: #e2e8f0;
    }
}

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

.target-card {
    animation: fadeInUp 0.6s ease forwards;
}

.target-card:nth-child(2) {
    animation-delay: 0.1s;
}

.target-card:nth-child(3) {
    animation-delay: 0.2s;
}

.target-card:nth-child(4) {
    animation-delay: 0.3s;
}

/* Accessibility Improvements */
.btn:focus,
.nav-link:focus,
.language-btn:focus,
.theme-toggle:focus {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn-primary {
        background: #000;
        border: 2px solid #fff;
    }
    
    .nav-link {
        border: 1px solid transparent;
    }
    
    .nav-link:hover {
        border-color: #2563eb;
    }
}