:root {
    --bg: #0b1220;
    --card: #111827;
    --glass: rgba(59, 130, 246, 0.08);
    --accent: #3b82f6;
    --accent-2: #1d4ed8;
    --muted: #98a0b3;
    --white: #f8fafc;
    --radius: 14px;

    --gradient-primary: linear-gradient(45deg, #3b82f6, #1d4ed8);
    --gradient-glass: linear-gradient(145deg, rgba(0, 0, 0, 0.6), rgba(29, 78, 216, 0.4));

    --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.3);
    --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);

    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(80px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(11, 18, 32, 0.85);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: bold;
    font-size: 1.25rem;
}

.logo {
    height: 32px;
    width: auto;
}

.brand-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-menu a {
    transition: var(--transition-smooth);
}

.nav-menu a:hover {
    color: var(--accent);
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.25rem;
    cursor: pointer;
}

.btn-hero {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-card);
}

.btn-hero:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.btn-hero i {
    transition: transform 0.3s ease;
}

.btn-hero:hover i {
    transform: translateX(4px);
}

.btn-portal,
.btn-portal-hero {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    background: var(--glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    backdrop-filter: blur(20px);
    transition: var(--transition-smooth);
}

.btn-portal-hero {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-portal:hover,
.btn-portal-hero:hover {
    background: rgba(59, 130, 246, 0.2);
    border-color: rgba(59, 130, 246, 0.5);
}

.btn-event {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--white);
    background: var(--glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-event:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    transform: translateY(-2px);
}

.btn-view {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--white);
    background: rgba(0, 0, 0, 0.8);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-view:hover {
    background: var(--gradient-primary);
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(
            to bottom,
            transparent 70%,           
            rgba(0, 0, 0, 0.6) 100%    
        ),
        url("https://images8.alphacoders.com/587/587540.jpg");
    background-size: cover;
    background-position: center;
    z-index: -1;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 4rem 0;
}

.hero-text h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--white);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.section {
    padding: 6rem 0;
}

.section-alt {
    background: rgba(59, 130, 246, 0.04);
}

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

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--muted);
    max-width: 700px;
    margin: 0 auto;
}

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

.event-card {
    position: relative;
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 2rem;
    transition: var(--transition-smooth);
    overflow: hidden;
}

.event-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-glass);
    opacity: 0;
    transition: var(--transition-smooth);
    z-index: 0;
}

.event-card:hover::before {
    opacity: 1;
}

.event-card > * {
    position: relative;
    z-index: 1;
}

.event-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
}

.event-card.featured {
    border-color: var(--accent);
    background: linear-gradient(145deg, rgba(59, 130, 246, 0.12), rgba(17, 24, 39, 0.9));
}

.event-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--gradient-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.event-icon {
    width: 60px;
    height: 60px;
    background: var(--glass);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
}

.event-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.event-description {
    color: var(--muted);
    margin-bottom: 1.5rem;
}

.event-meta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    color: var(--muted);
}

.event-date,
.event-time {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.past-event-card {
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition-smooth);
}

.past-event-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-card);
}

.past-event-image {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.past-event-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.past-event-card:hover .past-event-image img {
    transform: scale(1.1);
}

.past-event-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-smooth);
}

.past-event-card:hover .past-event-overlay {
    opacity: 1;
}

.past-event-content {
    padding: 1.5rem;
}

.past-event-content h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.past-event-content p {
    color: var(--muted);
    margin-bottom: 1rem;
}

.past-event-date {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--muted);
}

.cta-section {
    background: var(--gradient-glass);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.125rem;
    color: var(--muted);
    margin-bottom: 2rem;
}

.cta-actions {
    display: flex;
    justify-content: center;
}

.footer {
    background: rgba(0, 0, 0, 0.3);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand p {
    color: var(--muted);
    margin-top: 1rem;
}

.footer-links {
    display: flex;
    gap: 3rem;
}

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

.footer-column a {
    display: block;
    color: var(--muted);
    margin-bottom: 0.75rem;
    transition: var(--transition-smooth);
}

.footer-column a:hover {
    color: var(--accent);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--muted);
    font-size: 0.875rem;
}

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

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: rgba(11, 18, 32, 0.98);
        width: 100%;
        padding: 2rem;
        transition: var(--transition-smooth);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: block;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .footer-links {
        flex-direction: column;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .btn-hero,
    .btn-portal-hero {
        width: 100%;
        justify-content: center;
    }
}