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

:root {
    --primary-color: #1DA1F2;
    --secondary-color: #14171A;
    --accent-color: #00D9FF;
    --text-color: #E1E8ED;
    --bg-color: #0F1419;
    --card-bg: #192734;
    --border-color: #38444D;
    --success-color: #17BF63;
    --warning-color: #FFAD1F;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

/* Header & Navigation */
header {
    background-color: var(--secondary-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero {
    padding: 6rem 0;
    text-align: center;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--bg-color) 100%);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-color);
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 0.875rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
}

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

.btn-primary:hover {
    background-color: #1a8cd8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(29, 161, 242, 0.4);
}

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

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Stats Section */
.stats-section {
    padding: 4rem 0;
    background-color: var(--secondary-color);
}

.stats-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: transform 0.3s, box-shadow 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.stat-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-color);
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stats-updated {
    text-align: center;
    color: var(--text-color);
    opacity: 0.6;
    font-size: 0.875rem;
}

/* About Section */
.about-section {
    padding: 4rem 0;
}

.about-section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

.about-text p {
    margin-bottom: 1rem;
    font-size: 1.125rem;
    line-height: 1.8;
}

.about-features h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.about-features ul {
    list-style: none;
}

.about-features li {
    padding: 0.75rem 0;
    font-size: 1.125rem;
    border-bottom: 1px solid var(--border-color);
}

.about-features li:last-child {
    border-bottom: none;
}

/* Capabilities Section */
.capabilities-section {
    padding: 4rem 0;
    background-color: var(--secondary-color);
}

.capabilities-section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

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

.capability-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s;
}

.capability-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.capability-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.capability-card p {
    color: var(--text-color);
    opacity: 0.9;
    line-height: 1.6;
}

/* Tech Stack Section */
.tech-section {
    padding: 4rem 0;
}

.tech-section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.tech-category {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.tech-category h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.tech-category ul {
    list-style: none;
}

.tech-category li {
    padding: 0.5rem 0;
    color: var(--text-color);
    opacity: 0.9;
}

/* Sponsors Section */
.sponsors-section {
    padding: 4rem 0;
    background-color: var(--secondary-color);
}

.sponsors-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.sponsors-intro {
    text-align: center;
    font-size: 1.125rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

.sponsors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.sponsor-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s, border-color 0.3s;
}

.sponsor-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.sponsor-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.sponsor-card h3 a {
    color: var(--primary-color);
    text-decoration: none;
}

.sponsor-card h3 a:hover {
    text-decoration: underline;
}

.sponsor-card p {
    color: var(--text-color);
    opacity: 0.9;
    line-height: 1.6;
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.footer-info p {
    margin-bottom: 0.5rem;
    opacity: 0.8;
}

.footer-info a {
    color: var(--primary-color);
    text-decoration: none;
}

.footer-links h4 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-color);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.footer-support {
    flex: 1;
}

.footer-support h4 {
    margin-bottom: 1rem;
}

.footer-support p {
    margin: 0.5rem 0;
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-support strong {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    opacity: 0.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.875rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .stats-grid,
    .capabilities-grid,
    .tech-grid,
    .sponsors-grid {
        grid-template-columns: 1fr;
    }
}

/* Loading Animation */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.stat-value.loading {
    animation: pulse 1.5s ease-in-out infinite;
}