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

:root {
    --bg-dark: #0a0e27;
    --bg-card: rgba(26, 58, 108, 0.25);
    --blue-mid: #1a3a6c;
    --blue-bright: #2979ff;
    --blue-glow: rgba(41, 121, 255, 0.3);
    --text-primary: #f0f0f0;
    --text-secondary: #b0bec5;
    --border-card: rgba(41, 121, 255, 0.2);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--blue-bright);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #64b5f6;
}

/* Stars background */
.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.star {
    position: absolute;
    width: 2px;
    height: 2px;
    background: white;
    border-radius: 50%;
    animation: twinkle var(--duration) ease-in-out infinite;
    opacity: 0;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.1; }
    50% { opacity: var(--max-opacity, 0.8); }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0.75rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(10, 14, 39, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-card);
    transition: background 0.3s;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.1rem;
}

.nav-brand img {
    height: 40px;
    width: auto;
}

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

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--blue-bright);
    transition: width 0.3s;
}

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}

/* Hero */
.hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 2rem 4rem;
}

.hero-logo {
    width: min(300px, 60vw);
    height: auto;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 0 30px var(--blue-glow));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, #ffffff 0%, var(--blue-bright) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 2rem;
}

.hero-cta {
    display: inline-block;
    padding: 0.85rem 2.5rem;
    background: var(--blue-bright);
    color: white;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.05rem;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 20px var(--blue-glow);
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--blue-glow);
    color: white;
}

.scroll-hint {
    position: absolute;
    bottom: 2rem;
    animation: bounce 2s ease-in-out infinite;
}

.scroll-hint svg {
    width: 28px;
    height: 28px;
    stroke: var(--text-secondary);
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* Sections */
section {
    position: relative;
    z-index: 1;
    padding: 5rem 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-size: 1.05rem;
}

/* Activity cards */
.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.activity-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 16px;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.activity-card:hover {
    transform: translateY(-4px);
    border-color: var(--blue-bright);
    box-shadow: 0 8px 32px rgba(41, 121, 255, 0.15);
}

.activity-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(41, 121, 255, 0.15);
    border-radius: 14px;
}

.activity-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--blue-bright);
    fill: none;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.activity-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}

.activity-card p {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

/* Events */
.events-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.event-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 16px;
    padding: 1.5rem;
    transition: transform 0.3s, border-color 0.3s;
}

.event-card:hover {
    transform: translateX(6px);
    border-color: var(--blue-bright);
}

.event-date {
    flex-shrink: 0;
    width: 72px;
    text-align: center;
    padding: 0.75rem;
    background: linear-gradient(135deg, var(--blue-mid), var(--blue-bright));
    border-radius: 12px;
}

.event-date .day {
    display: block;
    font-size: 1.6rem;
    font-weight: 800;
    line-height: 1.2;
}

.event-date .month {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.event-info h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.event-info p {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.event-location {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.event-location svg {
    width: 14px;
    height: 14px;
    stroke: var(--blue-bright);
    fill: none;
    stroke-width: 2;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: start;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-card);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.3s;
    outline: none;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-secondary);
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--blue-bright);
}

.contact-form textarea {
    min-height: 120px;
    resize: vertical;
}

.btn-submit {
    padding: 0.85rem 2rem;
    background: var(--blue-bright);
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    align-self: flex-start;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--blue-glow);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-item-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(41, 121, 255, 0.15);
    border-radius: 12px;
}

.contact-item-icon svg {
    width: 22px;
    height: 22px;
    stroke: var(--blue-bright);
    fill: none;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.contact-item-text {
    font-size: 0.95rem;
}

.contact-item-text .label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.82rem;
    margin-bottom: 0.15rem;
}

.social-links {
    display: flex;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 50px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: border-color 0.3s, background 0.3s;
}

.social-link:hover {
    border-color: var(--blue-bright);
    background: rgba(41, 121, 255, 0.1);
    color: var(--text-primary);
}

.social-link svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* Footer */
.footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 2.5rem 2rem;
    border-top: 1px solid var(--border-card);
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

/* Mobile */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(10, 14, 39, 0.95);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border-card);
        padding: 1rem 0;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        display: block;
        padding: 0.75rem 2rem;
    }

    .nav-links a::after {
        display: none;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .event-card {
        flex-direction: column;
        text-align: center;
    }

    .social-links {
        flex-direction: column;
    }

    .hero {
        min-height: 90vh;
    }
}