/* ========================================
   Crimson Swords - STEM Racing Team
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;600;700;800;900&family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --crimson: #B22222;
    --crimson-dark: #8B0000;
    --crimson-light: #C41E3A;
    --black: #000000;
    --black-soft: #111111;
    --white: #FFFFFF;
    --off-white: #FAFAFA;
    --gray-light: #F5F5F5;
    --gray: #888888;
    --gray-dark: #333333;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 10px 40px rgba(196, 30, 58, 0.2);
    --shadow-red: 0 10px 40px rgba(196, 30, 58, 0.3);
    --ticker-height: 36px;
    --navbar-height: 70px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.7;
    color: var(--black);
    background-color: var(--black);
    font-weight: 400;
    letter-spacing: -0.01em;
    padding-top: calc(var(--ticker-height) + var(--navbar-height));
}

body:has(.hero) {
    padding-top: 0;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-block;
    padding: 16px 36px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-family: inherit;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--crimson-dark);
    border-color: var(--crimson-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-red);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    transform: translateY(-2px);
}

/* ========================================
   Ticker Bar
   ======================================== */
.ticker-bar {
    background: var(--crimson);
    overflow: hidden;
    padding: 0;
    white-space: nowrap;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1002;
    height: var(--ticker-height);
    display: flex;
    align-items: center;
}

.ticker-track {
    display: inline-flex;
    gap: 60px;
    animation: ticker 25s linear infinite;
}

.ticker-track span {
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

@keyframes ticker {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: var(--ticker-height);
    left: 0;
    right: 0;
    background: transparent;
    padding: 18px 0;
    z-index: 1000;
    transition: var(--transition);
    height: var(--navbar-height);
    display: flex;
    align-items: center;
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.4);
}

.page-header ~ .navbar,
body:not(:has(.hero)) .navbar {
    background: rgba(0, 0, 0, 0.95);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-icon {
    display: block;
    font-size: 1.4rem;
}

.logo-text {
    display: block;
    color: var(--white);
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}
.logo-img {
    width: 38px;
    height: 38px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.4));
}

.logo-text span {
    display: inline;
    color: var(--crimson);
}

.nav-links {
    display: flex;
    gap: 40px;
    margin: 0;
}

.nav-links a {
    color: var(--white);
    font-weight: 600;
    font-size: 0.8rem;
    position: relative;
    padding: 5px 0;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

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

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

.nav-links a:hover,
.nav-links a.active {
    color: var(--white);
    opacity: 1;
}

/* Mobile Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 10px;
    z-index: 1100;
    position: relative;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 0;
    transition: var(--transition);
    display: block;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ========================================
   Page Header (About, Sponsors, Contact)
   ======================================== */
.page-header {
    background: var(--crimson);
    padding: 100px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    background: var(--crimson-dark);
    clip-path: polygon(30% 0, 100% 0, 100% 100%, 0% 100%);
    z-index: 0;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 80px;
    background: var(--black);
    clip-path: polygon(0 60%, 100% 0, 100% 100%, 0% 100%);
    z-index: 1;
}

.page-header .container {
    position: relative;
    z-index: 2;
}

.page-header h1 {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 5rem;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 20px;
    letter-spacing: -0.01em;
    text-transform: uppercase;
    line-height: 1;
}

.page-header h1 span {
    color: rgba(255, 255, 255, 0.65);
}

.page-header p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    background: var(--black);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 0;
}

.hero-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: url('DSCF1233.JPG');
    background-size: cover;
    background-position: center;
    z-index: 0;
    animation: heroZoom 12s ease infinite alternate;
}

@keyframes heroZoom {
    from { transform: scale(1.0); }
    to { transform: scale(1.06); }
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(0,0,0,0.6) 0%,
        rgba(60,0,0,0.5) 50%,
        rgba(0,0,0,0.9) 100%
    );
}

.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(178,34,34,0.12) 0%,
        transparent 50%
    );
    z-index: 1;
    pointer-events: none;
}

.hero-wrapper {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 140px 40px 100px;
    max-width: 900px;
    margin: 0 auto;
}

.hero-image {
    display: none;
}

.hero-content {
    width: 100%;
    text-align: center;
    color: var(--white);
}

.hero-badge {
    display: inline-block;
    background: rgba(178,34,34,0.75);
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--white);
    padding: 8px 20px;
    font-size: 0.7rem;
    font-weight: 700;
    margin-bottom: 28px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    animation: fadeInDown 0.8s ease 0.1s both;
}

.hero h1 {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 8rem;
    font-weight: 900;
    line-height: 0.9;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    color: var(--white);
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease 0.2s both;
    text-shadow: 0 4px 40px rgba(0,0,0,0.6);
}

.hero h1 span {
    color: var(--crimson);
    display: block;
}

.hero-tagline {
    font-size: 1rem;
    color: rgba(255,255,255,0.6);
    margin-bottom: 12px;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-description {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.85);
    max-width: 520px;
    margin: 0 auto 48px;
    line-height: 1.9;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.5s both;
}

/* ========================================
   Sections
   ======================================== */
.section {
    padding: 120px 0;
}

.section-dark {
    background: var(--off-white);
}

.section-title {
    text-align: center;
    margin-bottom: 80px;
}

.section-title h2 {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--crimson);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
    text-transform: uppercase;
}

.section-title h2 span {
    color: var(--crimson);
}

.section-title p {
    color: var(--gray);
    font-size: 1.05rem;
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.8;
}

.cta-section .section-title h2,
.footer .section-title h2 {
    color: var(--white);
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    background: var(--black);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, var(--crimson-dark) 0%, transparent 60%);
    opacity: 0.4;
}

.cta-section .section-title h2 {
    color: var(--white);
}

.cta-section .section-title p {
    color: rgba(255, 255, 255, 0.7);
}

/* ========================================
   What is STEM section grid
   ======================================== */
.what-is-stem-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

/* ========================================
   Features Grid
   ======================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 60px;
}

.feature-card {
    background: var(--white);
    padding: 50px 35px;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--crimson);
    transition: var(--transition);
}

.feature-card:hover::before {
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--crimson);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    font-size: 1.75rem;
}

.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--black);
    font-weight: 700;
    letter-spacing: -0.01em;
}

.feature-card p {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ========================================
   Team Members Grid
   ======================================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 40px;
    text-align: center;
}

.team-card {
    background: transparent;
    border: none;
    box-shadow: none;
    text-align: center;
    transition: var(--transition);
}

.team-card:hover {
    transform: translateY(-6px);
}

.team-card::after {
    display: none;
}

.team-photo {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: var(--crimson);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--white);
    object-fit: cover;
    object-position: center top;
    margin: 0 auto 16px;
    border: 3px solid transparent;
    transition: border-color 0.3s ease;
}

.team-card:hover .team-photo,
.team-card:hover img.team-photo {
    border-color: var(--crimson);
}

img.team-photo {
    object-fit: cover;
    object-position: center top;
    border-radius: 50%;
    width: 140px;
    height: 140px;
    display: block;
}

.team-photo-placeholder {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: var(--crimson);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--white);
    margin: 0 auto 16px;
    border: 3px solid transparent;
    transition: border-color 0.3s ease;
}

.team-card:hover .team-photo-placeholder {
    border-color: var(--crimson-dark);
}

.team-info {
    padding: 0;
    border-top: none;
    text-align: center;
}

.team-info h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--black);
}

.section-dark .team-info h3 {
    color: var(--black);
}

.team-role {
    color: var(--crimson);
    font-weight: 600;
    font-size: 0.8rem;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.team-info p {
    color: var(--gray);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ========================================
   Photo Gallery Grid
   ======================================== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
    border: 1px solid rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    background: var(--gray-light);
}

.gallery-item.gallery-large {
    grid-column: span 2;
    grid-row: span 2;
    aspect-ratio: auto;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--crimson);
}

.gallery-item:hover img {
    transform: scale(1.06);
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.85), transparent);
    color: var(--white);
    padding: 40px 16px 16px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    opacity: 0;
    transition: var(--transition);
}

.gallery-item:hover .gallery-caption {
    opacity: 1;
}

/* ========================================
   Sponsors Grid
   ======================================== */
.sponsors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    margin-bottom: 80px;
}

.sponsor-card {
    background: var(--white);
    padding: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: var(--transition);
    min-height: 160px;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.sponsor-card::after {
    content: 'VISIT SITE →';
    position: absolute;
    bottom: -40px;
    left: 0;
    right: 0;
    background: var(--crimson);
    color: var(--white);
    text-align: center;
    padding: 10px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    transition: var(--transition);
}

.sponsor-card:hover::after {
    bottom: 0;
}

.sponsor-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--crimson);
}

.sponsor-card img {
    transition: transform 0.4s ease;
}

.sponsor-card:hover img {
    transform: scale(1.08);
}

.sponsor-tiers {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 60px;
}

.tier-card {
    background: var(--white);
    padding: 50px 36px;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: var(--transition);
    position: relative;
    clip-path: polygon(0 0, 100% 0, 100% 92%, 92% 100%, 0 100%);
    display: flex;
    flex-direction: column;
}

.tier-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.tier-card.gold::before    { background: #B8860B; }
.tier-card.silver::before  { background: #808080; }
.tier-card.bronze::before  { background: #8B4513; }
.tier-card.diamond::before { background: linear-gradient(90deg, #a8d8f0, #6ab4e8, #a8d8f0); }

.tier-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--crimson);
}

.tier-name {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: 8px;
    color: var(--black);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.tier-price {
    font-size: 1.4rem !important;
    font-weight: 700;
    color: var(--crimson);
    margin-bottom: 28px;
    line-height: 1.3;
}

.tier-benefits {
    text-align: left;
    margin-bottom: 35px;
    flex: 1;
}

.tier-benefits li {
    padding: 10px 0;
    border-bottom: 1px solid var(--gray-light);
    color: var(--gray-dark);
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.9rem;
    line-height: 1.5;
}

.tier-benefits li::before {
    content: '✓';
    color: var(--crimson);
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 1px;
}

/* ========================================
   Contact Form
   ======================================== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-form {
    background: var(--white);
    padding: 50px;
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-top: 4px solid var(--crimson);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
    color: var(--black);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid rgba(0, 0, 0, 0.12);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--white);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--crimson);
    box-shadow: 0 0 0 3px rgba(178, 34, 34, 0.08);
}

.form-group textarea {
    min-height: 160px;
    resize: vertical;
}

.contact-info {
    padding: 10px 0;
}

.contact-info h3 {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--black);
    margin-bottom: 16px;
    text-transform: uppercase;
}

.contact-info > p {
    color: var(--gray);
    margin-bottom: 36px;
    line-height: 1.8;
}

.contact-details {
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 24px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--crimson);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-item span,
.contact-item strong {
    color: var(--black);
}

.social-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.social-link {
    width: 48px;
    height: 48px;
    background: var(--crimson);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition);
}

.social-link:hover {
    background: var(--crimson-dark);
    transform: translateY(-3px);
}

.social-link svg {
    color: var(--white);
    fill: var(--white);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--black);
    color: var(--white);
    padding: 80px 0 40px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--crimson);
}

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

.footer-section h4 {
    font-size: 0.8rem;
    margin-bottom: 20px;
    color: var(--crimson);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.footer-section p {
    color: var(--gray);
    margin-bottom: 12px;
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: var(--gray);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--crimson);
    padding-left: 4px;
}

.footer-social {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.footer-social a {
    width: 38px;
    height: 38px;
    border: 1px solid var(--crimson);
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--crimson);
    transition: var(--transition);
}

.footer-social a svg {
    fill: var(--crimson);
}

.footer-social a:hover {
    background: var(--crimson);
    color: var(--white);
}

.footer-social a:hover svg {
    fill: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--gray);
    font-size: 0.85rem;
}

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

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1200px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }

    .sponsor-tiers {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .gallery-item.gallery-large {
        grid-column: span 2;
        grid-row: span 1;
        aspect-ratio: 16/9;
    }
}

@media (max-width: 992px) {
    .hero h1 {
        font-size: 5rem;
    }

    .what-is-stem-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .section {
        padding: 80px 0;
    }
}

@media (max-width: 768px) {
    :root {
        --navbar-height: 60px;
    }

    .container {
        padding: 0 20px;
    }

    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--black);
        border-left: 4px solid var(--crimson);
        flex-direction: column;
        padding: 120px 40px 60px;
        gap: 24px;
        transform: translateX(-100%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1050;
        justify-content: flex-start;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .nav-links a {
        font-size: 1.6rem;
        color: var(--white);
        font-family: 'Barlow Condensed', sans-serif;
        font-weight: 800;
        letter-spacing: 0.05em;
        text-transform: uppercase;
    }

    .hamburger {
        display: flex;
        z-index: 1100;
    }

    .hero {
        min-height: 100svh;
    }

    .hero h1 {
        font-size: 3.5rem;
    }

    .hero-wrapper {
        padding: 120px 20px 80px;
    }

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

    .section {
        padding: 60px 0;
    }

    .section-title {
        margin-bottom: 40px;
    }

    .section-title h2 {
        font-size: 2.5rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .gallery-item.gallery-large {
        grid-column: span 2;
        aspect-ratio: 16/9;
    }

    .page-header {
        padding: 70px 0 90px;
    }

    .page-header h1 {
        font-size: 3.2rem;
    }

    .page-header::after {
        height: 50px;
    }

    .team-grid {
        grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
        gap: 28px;
    }

    .team-photo,
    img.team-photo,
    .team-photo-placeholder {
        width: 110px;
        height: 110px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }

    .contact-form {
        padding: 30px 24px;
    }

    .sponsor-tiers {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.8rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .section-title h2 {
        font-size: 2rem;
    }

    .page-header h1 {
        font-size: 2.4rem;
    }

    .tier-card {
        padding: 36px 24px;
    }

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

    .features-grid[style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
    }
}

/* ========================================
   Light Mode
   ======================================== */
:root.light-mode {
    --black: #FFFFFF;
    --black-soft: #F5F5F5;
    --white: #111111;
    --off-white: #F0F0F0;
    --gray-light: #E8E8E8;
    --gray: #666666;
    --gray-dark: #222222;
    --shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

:root.light-mode body {
    background-color: #FFFFFF;
    color: #111111;
}

:root.light-mode .navbar.scrolled {
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 2px 20px rgba(0,0,0,0.12);
}

:root.light-mode .nav-links a {
    color: #111111;
}

:root.light-mode .logo-text {
    color: #111111;
}

:root.light-mode .hamburger span {
    background: #111111;
}

:root.light-mode .hero-bg::after {
    background: linear-gradient(
        to bottom,
        rgba(255,255,255,0.3) 0%,
        rgba(200,50,50,0.25) 50%,
        rgba(255,255,255,0.7) 100%
    );
}

:root.light-mode .section-dark {
    background: #F0F0F0;
}

:root.light-mode .cta-section {
    background: #EFEFEF;
}

:root.light-mode .cta-section::before {
    opacity: 0.15;
}

:root.light-mode .cta-section .section-title h2 {
    color: #111111;
}

:root.light-mode .cta-section .section-title p {
    color: #555555;
}

:root.light-mode .feature-card {
    background: #FFFFFF;
    border-color: rgba(0,0,0,0.1);
}

:root.light-mode .feature-card h3 {
    color: #111111;
}

:root.light-mode .team-info h3 {
    color: #111111;
}

:root.light-mode .tier-card {
    background: #FFFFFF;
    border-color: rgba(0,0,0,0.08);
}

:root.light-mode .tier-name {
    color: #111111;
}

:root.light-mode .tier-benefits li {
    color: #333333;
    border-bottom-color: #E8E8E8;
}

:root.light-mode .contact-form {
    background: #FFFFFF;
    border-color: rgba(0,0,0,0.08);
}

:root.light-mode .contact-info h3 {
    color: #111111;
}

:root.light-mode .form-group label {
    color: #111111;
}

:root.light-mode .form-group input,
:root.light-mode .form-group textarea {
    background: #FFFFFF;
    border-color: rgba(0,0,0,0.15);
    color: #111111;
}

:root.light-mode .footer {
    background: #1a1a1a;
}

:root.light-mode .gallery-item {
    background: #E8E8E8;
}

:root.light-mode .section-title h2 {
    color: var(--crimson);
}

/* Dark Mode toggle button */
.dark-mode-toggle {
    display: inline-block;
    margin-top: 16px;
    padding: 10px 22px;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.25);
    color: var(--gray);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.dark-mode-toggle:hover {
    border-color: var(--crimson);
    color: var(--crimson);
}

:root.light-mode .dark-mode-toggle {
    border-color: rgba(0,0,0,0.2);
    color: #666666;
}

:root.light-mode .dark-mode-toggle:hover {
    border-color: var(--crimson);
    color: var(--crimson);
}