/* ================= VARIABLES & RESET ================= */
:root {
    --electric-cyan: #00F0FF;
    --race-red: #FF2E2E;
    --deep-void: #020508;
    --glass-bg: rgba(2, 5, 8, 0.9);
    --glass-border: rgba(255, 255, 255, 0.1);
    --font-header: 'Orbitron', sans-serif;
    --font-body: 'Roboto', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    background-color: var(--deep-void);
    color: white;
    font-family: var(--font-body);
    overflow-x: hidden;
}

/* ================= NAVBAR ================= */
.navbar {
    display: flex; justify-content: space-between; align-items: center;
    position: fixed; top: 0; width: 100%; padding: 10px 40px;
    background: var(--glass-bg); border-bottom: 1px solid var(--glass-border); z-index: 1000;
}
.logos-wrapper { display: flex; align-items: center; }
.logo-container { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.partner-logo { height: 45px; width: auto; }
.sae-logo { height: 45px; width: auto; }
.team-logo { height: 45px; width: auto; }
.logo-text { font-family: var(--font-header); font-weight: 800; font-size: 1.2rem; color: white; white-space: nowrap; }
.prefix-red { color: var(--race-red); }
.suffix-cyan { color: var(--electric-cyan); }

.nav-links { display: flex; gap: 30px; list-style: none; align-items: center; }
.nav-links a { color: white; text-decoration: none; font-weight: 500; transition: 0.3s; }
.nav-links a:hover { color: var(--electric-cyan); }

.btn-join-nav {
    background: var(--race-red); padding: 8px 20px; border-radius: 4px;
    font-weight: bold; text-transform: uppercase; border: 1px solid var(--race-red);
}
.btn-join-nav:hover { background: transparent !important; color: var(--race-red) !important; }

/* Dropdown */
.dropdown { position: relative; }
.dropdown-menu {
    display: none; position: absolute; top: 100%; left: 0;
    background: var(--glass-bg); border: 1px solid var(--glass-border);
    border-radius: 6px; list-style: none; min-width: 160px;
    padding: 6px 0; z-index: 999;
    padding-top: 16px; margin-top: -6px;
}
.dropdown-menu::before {
    content: ''; position: absolute; top: 0; left: 0;
    width: 100%; height: 16px; background: transparent;
}
.dropdown:hover .dropdown-menu { display: block; }
.dropdown-menu li a {
    display: block; padding: 10px 18px; color: #ccc;
    font-size: 0.9rem; border-bottom: none;
}
.dropdown-menu li a:hover { color: var(--electric-cyan); background: rgba(0,240,255,0.05); }
.dropdown-toggle { cursor: pointer; }

@media (max-width: 768px) {
    .dropdown-menu {
        position: static; border: none; background: #0a0f18;
        padding: 0; display: block; box-shadow: none;
        margin-top: 0; padding-top: 0;
    }
    .dropdown-menu::before { display: none; }
    .dropdown-menu li a {
        padding: 12px 40px; border-bottom: 1px solid #111;
        font-size: 0.85rem; color: #aaa;
        text-align: left; display: block; width: 100%;
    }
    .dropdown-toggle { pointer-events: none; }
}

/* Hamburger */
.hamburger {
    display: none; flex-direction: column; justify-content: center; gap: 5px;
    cursor: pointer; padding: 4px; background: none; border: none;
}
.hamburger span {
    display: block; width: 24px; height: 2px; background: white;
    border-radius: 2px; transition: 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ================= HERO SECTION ================= */
.hero {
    height: 100vh; display: flex; align-items: center; justify-content: center;
    text-align: center; padding-top: 60px; position: relative; overflow: hidden;
}
.hero::before {
    content: ''; position: absolute; width: 200%; height: 200%; top: -50%; left: -50%;
    background-image: linear-gradient(rgba(0, 240, 255, 0.1) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(0, 240, 255, 0.1) 1px, transparent 1px);
    background-size: 60px 60px; transform: perspective(500px) rotateX(60deg);
    animation: gridMove 20s linear infinite; z-index: 1;
}
.hero::after {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(circle, transparent 20%, var(--deep-void) 90%); z-index: 2;
}
.hero-content { position: relative; z-index: 3; max-width: 900px; padding: 20px; }

.hero h1 { font-family: var(--font-header); font-size: 3.5rem; line-height: 1.2; margin-bottom: 20px; }
.highlight { color: var(--electric-cyan); text-shadow: 0 0 20px rgba(0,240,255,0.5); }
.highlight-red { color: var(--race-red); text-shadow: 0 0 20px rgba(255,46,46,0.5); }

.stats-row { display: flex; justify-content: center; gap: 40px; margin: 40px 0; }
.stat h3 { font-family: var(--font-header); font-size: 2.2rem; color: var(--electric-cyan); }
.stat span { font-size: 0.8rem; color: #888; letter-spacing: 2px; }

.cta-button {
    padding: 15px 40px; border: 2px solid var(--electric-cyan);
    color: var(--electric-cyan); text-decoration: none; font-family: var(--font-header);
    font-weight: bold; text-transform: uppercase; transition: 0.3s;
    background: rgba(0, 240, 255, 0.05);
}
.cta-button:hover { background: var(--electric-cyan); color: black; box-shadow: 0 0 30px var(--electric-cyan); }

@keyframes gridMove {
    0% { transform: perspective(500px) rotateX(60deg) translateY(0); }
    100% { transform: perspective(500px) rotateX(60deg) translateY(60px); }
}

/* ================= TECH SPOTLIGHT ================= */
.section-dark {
    padding: 80px 20px; background: #050a10; text-align: center;
    border-top: 1px solid #222; position: relative; z-index: 10;
}
.section-dark h2 { font-family: var(--font-header); font-size: 2.5rem; margin-bottom: 60px; color: white; }

.tech-showcase {
    display: flex; align-items: center; justify-content: space-between;
    max-width: 1100px; margin: 0 auto 80px auto; gap: 50px; text-align: left;
}
.tech-showcase.reverse { flex-direction: row-reverse; }

.tech-text { flex: 1; }
.tech-text h3 { font-family: var(--font-header); font-size: 2rem; margin-bottom: 20px; color: white; }
.tech-text p { color: #aaa; line-height: 1.6; margin-bottom: 20px; font-size: 1.1rem; }

.tech-specs { list-style: none; padding: 0; }
.tech-specs li {
    padding: 10px 0; border-bottom: 1px solid #333; color: var(--electric-cyan);
    font-family: var(--font-header); letter-spacing: 1px;
}

.tech-image { flex: 1; overflow: hidden; border-radius: 8px; border: 1px solid #333; box-shadow: 0 0 20px rgba(0, 240, 255, 0.1); transition: 0.3s; }
.tech-image img { width: 100%; border-radius: 8px; transition: 0.3s; }
.tech-image img:hover { transform: scale(1.02); box-shadow: 0 0 30px rgba(0, 240, 255, 0.3); }
.tech-video {
    width: 100%; display: block;
    object-fit: cover; object-position: center;
    aspect-ratio: 16/9; transition: 0.3s;
}
.tech-image:hover .tech-video { transform: scale(1.02); }
.accumulator-video { object-position: 70% center; }

/* ================= TEAM ================= */
.team-grid { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; }

.team-card {
    background: #0b1622; width: 300px; border-radius: 10px; overflow: hidden;
    border: 1px solid #1f2a36; transition: 0.3s;
}
.team-card:hover {
    transform: translateY(-10px); border-color: var(--race-red);
    box-shadow: 0 10px 30px rgba(255, 46, 46, 0.2);
}
.member-img-box { width: 100%; height: 300px; overflow: hidden; }
.member-img-box img {
    width: 100%; height: 100%; object-fit: cover;
    filter: grayscale(100%); transition: 0.5s;
}
.team-card:hover .member-img-box img { filter: grayscale(0%); transform: scale(1.1); }
.member-info { padding: 20px; text-align: center; }
.member-info h3 { font-family: var(--font-header); color: white; margin-bottom: 5px; font-size: 1.4rem; }
.member-info .role { color: var(--electric-cyan); font-weight: 500; font-size: 0.9rem; letter-spacing: 1px; }

/* ================= SPONSORS ================= */
.section-light { padding: 80px 20px; background: white; text-align: center; color: black; }
.section-light h2 { font-family: var(--font-header); font-size: 2.5rem; margin-bottom: 50px; color: black; }
.sponsor-grid { display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; }
.sponsor-box {
    width: 250px; height: 120px; background: white;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid #eee; border-radius: 8px; padding: 15px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05); transition: transform 0.3s ease;
}
.sponsor-box:hover { transform: translateY(-5px); box-shadow: 0 8px 15px rgba(0,0,0,0.1); border-color: var(--race-red); }
.sponsor-img { max-width: 100%; max-height: 100%; object-fit: contain; filter: grayscale(100%); transition: 0.3s; }
.sponsor-box:hover .sponsor-img { filter: grayscale(0%); }

/* ================= CONTACT PAGE ================= */
.contact-section {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    padding: 100px 40px 60px; background: var(--deep-void);
}
.contact-wrapper { display: flex; gap: 60px; max-width: 1100px; width: 100%; align-items: flex-start; }

.contact-info { flex: 1; padding-top: 10px; }
.contact-info h2 { font-family: var(--font-header); font-size: 2.4rem; margin-bottom: 16px; }
.contact-info > p { color: #aaa; line-height: 1.7; font-size: 1rem; margin-bottom: 40px; }
.contact-details { display: flex; flex-direction: column; gap: 24px; }
.contact-item { display: flex; flex-direction: column; gap: 4px; border-left: 2px solid var(--race-red); padding-left: 16px; }
.contact-label { font-family: var(--font-header); font-size: 0.7rem; color: var(--race-red); letter-spacing: 2px; }
.contact-value { color: #ccc; font-size: 0.95rem; }

.contact-form-panel {
    flex: 1.4; background: #060d16; border: 1px solid #1a2535;
    border-radius: 10px; padding: 40px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}
.input-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.input-group label { font-size: 0.75rem; font-family: var(--font-header); color: #888; letter-spacing: 1px; text-transform: uppercase; }
.optional { color: #555; font-size: 0.65rem; text-transform: none; font-family: var(--font-body); }

.recruit-form input,
.recruit-form select,
.recruit-form textarea {
    width: 100%; background: #020810; border: 1px solid #1e2d40;
    color: white; padding: 12px 14px; border-radius: 5px;
    font-family: var(--font-body); font-size: 0.95rem; transition: border-color 0.2s, box-shadow 0.2s;
}
.recruit-form select option { background: #020810; }
.recruit-form input:focus,
.recruit-form select:focus,
.recruit-form textarea:focus {
    outline: none; border-color: var(--electric-cyan);
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.15);
}
.recruit-form textarea { resize: vertical; }

.row { display: flex; gap: 16px; }

.btn-submit {
    width: 100%; background: var(--race-red); padding: 14px; border: none;
    color: white; font-weight: bold; cursor: pointer; border-radius: 5px;
    font-size: 0.9rem; transition: 0.25s; font-family: var(--font-header);
    letter-spacing: 2px; margin-top: 4px;
}
.btn-submit:hover { background: transparent; color: var(--race-red); border: 1px solid var(--race-red); }

.form-success { text-align: center; padding: 40px 20px; }
.success-icon {
    width: 60px; height: 60px; border-radius: 50%;
    border: 2px solid var(--electric-cyan); color: var(--electric-cyan);
    font-size: 1.8rem; display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px;
}
.form-success h3 { font-family: var(--font-header); font-size: 1.4rem; margin-bottom: 10px; }
.form-success p { color: #aaa; }

.form-failed { text-align: center; padding: 40px 20px; }
.failed-icon {
    width: 60px; height: 60px; border-radius: 50%;
    border: 2px solid var(--race-red); color: var(--race-red);
    font-size: 1.8rem; display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px;
}
.form-failed h3 { font-family: var(--font-header); font-size: 1.4rem; margin-bottom: 10px; color: var(--race-red); }
.form-failed p { color: #aaa; line-height: 1.6; }
.form-failed strong { color: white; }

.form-error {
    background: rgba(255,46,46,0.1); border: 1px solid var(--race-red);
    color: #ff8080; padding: 12px 16px; border-radius: 5px; margin-bottom: 20px; font-size: 0.9rem;
}

/* ================= PAGE HERO (shared) ================= */
.page-hero {
    min-height: 35vh; display: flex; flex-direction: column;
    align-items: center; justify-content: center; text-align: center;
    padding: 120px 20px 60px; background: var(--deep-void);
    border-bottom: 1px solid #1a2535; position: relative;
}
.page-hero::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at center, rgba(0,240,255,0.05) 0%, transparent 70%);
    pointer-events: none;
}
.page-hero h1 {
    font-family: var(--font-header); font-size: 3rem;
    letter-spacing: 4px; margin-bottom: 12px;
}
.page-hero p { color: #888; font-size: 1rem; max-width: 500px; }

/* ================= GALLERY ================= */
.gallery-section { padding: 60px 40px; max-width: 1200px; margin: 0 auto; }

.gallery-filters { display: flex; gap: 12px; margin-bottom: 40px; flex-wrap: wrap; }
.filter-btn {
    padding: 8px 22px; border: 1px solid #333; background: transparent;
    color: #888; font-family: var(--font-header); font-size: 0.7rem;
    letter-spacing: 2px; cursor: pointer; border-radius: 4px; transition: 0.2s;
}
.filter-btn:hover, .filter-btn.active {
    border-color: var(--electric-cyan); color: var(--electric-cyan);
}

.gallery-empty {
    text-align: center; padding: 80px 20px; border: 1px dashed #1a2535; border-radius: 10px;
}
.empty-icon { font-size: 3rem; color: #1a2535; margin-bottom: 20px; }
.gallery-empty h3 { font-family: var(--font-header); font-size: 1.2rem; color: #444; margin-bottom: 10px; }
.gallery-empty p { color: #333; font-size: 0.9rem; }

.gallery-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px;
}
.gallery-item { position: relative; overflow: hidden; border-radius: 8px; aspect-ratio: 4/3; cursor: pointer; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.gallery-item:hover img { transform: scale(1.06); }
.gallery-overlay {
    position: absolute; inset: 0; background: rgba(0,0,0,0.5);
    display: flex; align-items: flex-end; padding: 16px;
    opacity: 0; transition: 0.3s;
}
.gallery-item:hover .gallery-overlay { opacity: 1; }
.gallery-overlay span { color: white; font-family: var(--font-header); font-size: 0.8rem; letter-spacing: 1px; }

/* ================= BROCHURE ================= */
.brochure-section { padding: 80px 40px; max-width: 900px; margin: 0 auto; }
.brochure-cards { display: flex; gap: 30px; flex-wrap: wrap; justify-content: center; }

.brochure-card {
    flex: 1; min-width: 260px; max-width: 380px;
    background: #060d16; border: 1px solid #1a2535; border-radius: 10px;
    padding: 40px 32px; text-align: center; transition: 0.3s;
}
.brochure-card:hover { border-color: var(--electric-cyan); box-shadow: 0 0 30px rgba(0,240,255,0.08); }
.brochure-icon { font-size: 2.5rem; margin-bottom: 20px; }
.brochure-card h3 { font-family: var(--font-header); font-size: 1rem; margin-bottom: 14px; line-height: 1.4; }
.brochure-card p { color: #888; font-size: 0.9rem; line-height: 1.6; margin-bottom: 28px; }
.brochure-btn {
    display: inline-block; padding: 10px 28px; border: 1px solid var(--race-red);
    color: var(--race-red); text-decoration: none; font-family: var(--font-header);
    font-size: 0.75rem; letter-spacing: 2px; border-radius: 4px; transition: 0.2s;
}
.brochure-btn:hover { background: var(--race-red); color: white; }

/* ================= RESEARCH ================= */
.research-section { padding: 60px 40px; max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 24px; }

.research-card {
    background: #060d16; border: 1px solid #1a2535; border-radius: 10px;
    padding: 32px; transition: 0.3s;
}
.research-card:hover { border-color: var(--electric-cyan); box-shadow: 0 0 20px rgba(0,240,255,0.06); }
.research-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.research-tag {
    background: rgba(0,240,255,0.08); border: 1px solid rgba(0,240,255,0.2);
    color: var(--electric-cyan); font-family: var(--font-header);
    font-size: 0.65rem; letter-spacing: 2px; padding: 4px 10px; border-radius: 3px;
}
.research-year { color: #555; font-size: 0.85rem; }
.research-card h3 { font-family: var(--font-header); font-size: 1rem; line-height: 1.5; margin-bottom: 12px; color: white; }
.research-card p { color: #888; font-size: 0.9rem; line-height: 1.7; margin-bottom: 16px; }
.research-authors { color: #555; font-size: 0.8rem; margin-bottom: 20px; }
.research-link {
    color: var(--electric-cyan); text-decoration: none; font-family: var(--font-header);
    font-size: 0.75rem; letter-spacing: 1px; transition: 0.2s;
}
.research-link:hover { color: white; }

/* ================= FOOTER ================= */
footer { text-align: center; padding: 20px; background: black; color: #555; font-size: 0.8rem; }

/* ================= RESPONSIVE ================= */

/* Tablet — 1024px */
@media (max-width: 1024px) {
    .navbar { padding: 10px 24px; }
    .logo-text { font-size: 1rem; }
    .nav-links { gap: 20px; }
    .hero h1 { font-size: 2.8rem; }
    .tech-showcase { gap: 30px; }
    .tech-text h3 { font-size: 1.6rem; }
}

/* Tablet — 768px */
@media (max-width: 768px) {
    /* Navbar — hamburger */
    .navbar { padding: 10px 20px; }
    .hamburger { display: flex; }
    .nav-links {
        display: none; flex-direction: column; gap: 0;
        position: absolute; top: 100%; left: 0; width: 100%;
        background: var(--glass-bg); border-bottom: 1px solid var(--glass-border);
        padding: 10px 0;
    }
    .nav-links.open { display: flex; }
    .nav-links li { width: 100%; }
    .nav-links a { display: block; padding: 14px 24px; border-bottom: 1px solid #111; }
    .nav-links > li:last-child > a { margin: 10px 20px; border-radius: 4px; text-align: center; border-bottom: none; }
    .logo-text { display: none; }
    .partner-logo, .sae-logo, .team-logo { height: 36px; }

    /* Hero */
    .hero h1 { font-size: 2rem; }
    .hero-content p { font-size: 0.9rem; }
    .stats-row { gap: 24px; }
    .stat h3 { font-size: 1.6rem; }
    .cta-button { padding: 12px 28px; font-size: 0.85rem; }

    /* Tech showcase */
    .section-dark h2 { font-size: 1.8rem; margin-bottom: 40px; }
    .tech-showcase,
    .tech-showcase.reverse { flex-direction: column; text-align: center; gap: 30px; margin-bottom: 50px; }
    .tech-text h3 { font-size: 1.4rem; }
    .tech-text p { font-size: 1rem; }

    /* Team */
    .team-grid { gap: 24px; }
    .team-card { width: 260px; }

    /* Sponsors */
    .section-light h2 { font-size: 1.8rem; }
    .sponsor-box { width: 200px; height: 100px; }

    /* Contact */
    .contact-wrapper { flex-direction: column; gap: 40px; }
    .contact-section { padding: 90px 20px 50px; }
    .contact-info h2 { font-size: 1.8rem; }
    .contact-form-panel { padding: 28px 20px; }
    .row { flex-direction: column; gap: 0; }
}

/* Mobile — 480px */
@media (max-width: 480px) {
    .partner-logo, .sae-logo, .team-logo { height: 28px; }
    .logo-container { gap: 8px; }

    .hero h1 { font-size: 1.5rem; }
    .stats-row { flex-direction: column; gap: 16px; align-items: center; }
    .stat h3 { font-size: 1.8rem; }

    .section-dark { padding: 50px 16px; }
    .section-dark h2 { font-size: 1.4rem; }
    .tech-text h3 { font-size: 1.2rem; }

    .team-card { width: 100%; max-width: 320px; }
    .member-img-box { height: 240px; }

    .sponsor-grid { gap: 16px; }
    .sponsor-box { width: 140px; height: 80px; padding: 10px; }

    .section-light h2 { font-size: 1.4rem; }

    .contact-info h2 { font-size: 1.5rem; }
    .contact-form-panel { padding: 20px 16px; }
}