/* ==================== CSS Variables ==================== */
:root {
    /* Xavvi Color Scheme */
    --primary-blue: #1e2347;
    --primary-gold: #FFD700;
    --accent-blue: #2a3768;
    --accent-gold: #FFC300;
    --light-blue: #3d4f7a;
    --dark-blue: #151935;
    
    /* Neutral Colors */
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --medium-gray: #e9ecef;
    --text-gray: #6c757d;
    --dark-gray: #343a40;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-padding: 0 20px;
    
    /* Effects */
    --transition: all 0.3s ease;
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* ==================== Navigation ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--primary-blue);
    box-shadow: var(--box-shadow);
    z-index: 1000;
    padding: 15px 0;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.logo img {
    height: 45px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 30px;
    flex: 1;
    justify-content: center;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gold);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-links a:hover {
    color: var(--primary-gold);
}

/* Language Selector */
.language-selector {
    position: relative;
}

.lang-btn {
    background: var(--accent-blue);
    color: var(--white);
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    transition: var(--transition);
}

.lang-btn:hover {
    background: var(--light-blue);
    transform: translateY(-2px);
}

.lang-dropdown {
    position: absolute;
    top: 120%;
    right: 0;
    background: var(--white);
    border-radius: 10px;
    box-shadow: var(--box-shadow);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    min-width: 150px;
}

.lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-dropdown button {
    width: 100%;
    padding: 12px 20px;
    border: none;
    background: var(--white);
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    color: var(--dark-gray);
}

.lang-dropdown button:hover {
    background: var(--light-gray);
    color: var(--primary-blue);
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--white);
    font-size: 24px;
    cursor: pointer;
}

/* ==================== Hero Section ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 20px 80px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 215, 0, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 215, 0, 0.1) 0%, transparent 50%);
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 20px;
    line-height: 1.2;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-gold);
    margin-bottom: 15px;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-description {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin: 50px 0;
    animation: fadeInUp 1s ease 0.6s both;
}

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

.stat-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary-gold);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    color: var(--white);
    font-weight: 500;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.8s both;
}

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

/* ==================== Buttons ==================== */
.btn {
    padding: 15px 40px;
    border: none;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: var(--primary-gold);
    color: var(--primary-blue);
}

.btn-primary:hover {
    background: var(--accent-gold);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255, 215, 0, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-blue);
    transform: translateY(-3px);
}

/* ==================== Section Styles ==================== */
.section-title {
    font-size: 42px;
    font-weight: 800;
    text-align: center;
    color: var(--primary-blue);
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 18px;
    text-align: center;
    color: var(--text-gray);
    margin-bottom: 50px;
}

/* ==================== Mission Section ==================== */
.mission {
    padding: var(--section-padding);
    background: var(--light-gray);
}

.mission-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.mission-item {
    background: var(--white);
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.mission-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-hover);
}

.mission-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-gold), var(--accent-gold));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 36px;
    color: var(--primary-blue);
}

.mission-item h3 {
    font-size: 24px;
    color: var(--primary-blue);
    margin-bottom: 15px;
}

.mission-item p {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.8;
}

/* ==================== Network Section ==================== */
.network {
    padding: var(--section-padding);
    background: var(--white);
}

.network-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.network-card {
    background: var(--light-gray);
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}

.network-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-gold);
    box-shadow: var(--box-shadow-hover);
}

.network-card.highlight {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    color: var(--white);
}

.network-card.highlight h3,
.network-card.highlight .network-number {
    color: var(--primary-gold);
}

.network-card.highlight p {
    color: rgba(255, 255, 255, 0.9);
}

.network-icon {
    font-size: 48px;
    color: var(--primary-gold);
    margin-bottom: 20px;
}

.network-number {
    font-size: 64px;
    font-weight: 800;
    color: var(--primary-blue);
    margin: 20px 0;
}

.network-card h3 {
    font-size: 24px;
    color: var(--primary-blue);
    margin-bottom: 15px;
}

.network-card p {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.8;
}

/* ==================== Capabilities Section ==================== */
.capabilities {
    padding: var(--section-padding);
    background: var(--primary-blue);
    color: var(--white);
}

.capabilities .section-title {
    color: var(--white);
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.capability-card {
    background: var(--accent-blue);
    padding: 40px;
    border-radius: 15px;
    transition: var(--transition);
    border: 2px solid transparent;
}

.capability-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-gold);
    box-shadow: 0 15px 40px rgba(255, 215, 0, 0.2);
}

.capability-icon {
    font-size: 48px;
    color: var(--primary-gold);
    margin-bottom: 25px;
}

.capability-card h3 {
    font-size: 24px;
    color: var(--primary-gold);
    margin-bottom: 15px;
}

.capability-card p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
    line-height: 1.8;
}

.capability-card ul {
    list-style: none;
}

.capability-card ul li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
}

.capability-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-gold);
    font-weight: bold;
    font-size: 18px;
}

/* ==================== Technology Section ==================== */
.technology {
    padding: var(--section-padding);
    background: var(--light-gray);
}

.technology-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.tech-card {
    background: var(--white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.tech-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-hover);
}

.tech-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.tech-header i {
    font-size: 42px;
    color: var(--primary-gold);
}

.tech-header h3 {
    font-size: 22px;
    color: var(--primary-blue);
}

.tech-card p {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 20px;
}

.tech-benefit {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-gold), var(--accent-gold));
    color: var(--primary-blue);
    padding: 10px 25px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 14px;
}

/* ==================== Goals/Timeline Section ==================== */
.goals {
    padding: var(--section-padding);
    background: var(--white);
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 50px auto 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary-gold);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 60px;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
}

.timeline-year {
    flex: 0 0 120px;
    font-size: 36px;
    font-weight: 800;
    color: var(--primary-gold);
    text-align: center;
    background: var(--primary-blue);
    padding: 20px;
    border-radius: 50%;
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
}

.timeline-content {
    flex: 1;
    background: var(--light-gray);
    padding: 30px;
    border-radius: 15px;
    margin: 0 40px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.timeline-item:hover .timeline-content {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-hover);
}

.timeline-item.highlight .timeline-content {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    color: var(--white);
}

.timeline-item.highlight h3 {
    color: var(--primary-gold);
}

.timeline-item.highlight ul li {
    color: rgba(255, 255, 255, 0.9);
}

.timeline-content h3 {
    font-size: 24px;
    color: var(--primary-blue);
    margin-bottom: 15px;
}

.timeline-content ul {
    list-style: none;
}

.timeline-content ul li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    font-size: 16px;
    color: var(--text-gray);
}

.timeline-content ul li::before {
    content: '►';
    position: absolute;
    left: 0;
    color: var(--primary-gold);
    font-size: 14px;
}

/* ==================== Impact Section ==================== */
.impact {
    padding: var(--section-padding);
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    color: var(--white);
}

.impact .section-title {
    color: var(--white);
}

.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.impact-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    border: 2px solid rgba(255, 215, 0, 0.3);
    transition: var(--transition);
}

.impact-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-gold);
    background: rgba(255, 255, 255, 0.15);
}

.impact-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 36px;
    color: var(--primary-blue);
}

.impact-card h3 {
    font-size: 24px;
    color: var(--primary-gold);
    margin-bottom: 15px;
}

.impact-card p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
}

/* ==================== Contact Section ==================== */
.contact {
    padding: var(--section-padding);
    background: var(--light-gray);
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 60px;
    margin-top: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.contact-item i {
    font-size: 28px;
    color: var(--primary-gold);
    background: var(--primary-blue);
    padding: 15px;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item h4 {
    font-size: 18px;
    color: var(--primary-blue);
    margin-bottom: 5px;
}

.contact-item p {
    font-size: 16px;
    color: var(--text-gray);
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--box-shadow);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 16px;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-gold);
}

.contact-form button {
    width: 100%;
}

/* ==================== Footer ==================== */
.footer {
    background: var(--primary-blue);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-logo img {
    height: 50px;
    margin-bottom: 20px;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 16px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    color: var(--primary-gold);
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
    font-size: 15px;
}

.footer-column ul li a:hover {
    color: var(--primary-gold);
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

/* ==================== Responsive Design ==================== */
@media (max-width: 992px) {
    .timeline::before {
        left: 60px;
    }
    
    .timeline-item {
        flex-direction: row !important;
    }
    
    .timeline-year {
        flex: 0 0 100px;
        width: 100px;
        height: 100px;
        font-size: 28px;
    }
    
    .timeline-content {
        margin: 0 0 0 40px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .network-grid,
    .capabilities-grid,
    .technology-grid,
    .impact-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-description {
        font-size: 15px;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .timeline-year {
        flex: 0 0 80px;
        width: 80px;
        height: 80px;
        font-size: 22px;
    }
}