/* Variables CSS */
:root {
    --primary-color: #1a4d6d;
    --secondary-color: #2dd4bf;
    --dark-color: #0f172a;
    --light-bg: #f8fafc;
    --text-color: #334155;
    --border-radius: 12px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background-color: var(--dark-color);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    padding: 1rem 0;
}

.navbar.scrolled {
    background-color: rgba(15, 23, 42, 0.95);
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.navbar-brand img {
    transition: transform 0.3s ease;
}

.navbar-brand:hover img {
    transform: scale(1.05);
}

.nav-link {
    color: #cbd5e1 !important;
    font-weight: 500;
    margin: 0 0.5rem;
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--secondary-color) !important;
}

/* Language button styling */
.lang-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem !important;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--secondary-color);
}

.lang-btn span {
    font-weight: 600;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--primary-color) 100%);
    color: white;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-section h1 {
    font-weight: 800;
    background: linear-gradient(45deg, #fff, var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-buttons .btn {
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--secondary-color);
    border: none;
}

.btn-primary:hover {
    background-color: #22b8a3;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(45, 212, 191, 0.4);
}

.btn-outline-primary {
    color: white;
    border-color: white;
}

.btn-outline-primary:hover {
    background-color: white;
    color: var(--primary-color);
}

.hero-image {
    position: relative;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* Section Styles */
.section-title {
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 1rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--secondary-color);
    border-radius: 2px;
}

/* Info Cards */
.info-card {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.info-card i {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-right: 1rem;
}

/* Team Cards */
.team-card {
    background-color: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    height: 100%;
    transition: all 0.3s ease;
}

.team-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.team-member {
    background-color: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

/* Objectives */
.objective-card {
    background-color: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: relative;
    height: 100%;
    transition: all 0.3s ease;
}

.objective-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.objective-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--secondary-color);
    opacity: 0.2;
    position: absolute;
    top: 1rem;
    right: 1rem;
}

/* Timeline */
.methodology-timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-marker {
    background-color: var(--secondary-color);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-right: 2rem;
    flex-shrink: 0;
}

.timeline-content {
    background-color: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    flex-grow: 1;
}

/* Output Cards */
.output-card {
    background-color: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    height: 100%;
    transition: all 0.3s ease;
}

.output-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.output-card i {
    color: var(--secondary-color);
}

/* Contact Section */
.contact-info p {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--secondary-color);
    color: white;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.social-link:hover {
    transform: translateY(-3px);
    background-color: #22b8a3;
    color: white;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .timeline-item {
        flex-direction: column;
        text-align: center;
    }
    
    .timeline-marker {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
}

/* Animations */
[data-aos] {
    transition-duration: 800ms;
}