/* ===== CUSTOM PROPERTIES ===== */
:root {
  --bg: #FAFAF7;
  --bg-alt: #F3F3EE;
  --accent: #E9FADC;
  --accent-hover: #D6F2C2;
  --accent-strong: #B8E09B;
  --accent-text: #2B5A14;
  --green-dark: #1E3F0E;
  --text: #1A1A1A;
  --text-secondary: #555;
  --text-muted: #888;
  --border: #E2E2DB;
  --white: #FFFFFF;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 20px rgba(0,0,0,0.04);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.08);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-display: 'Outfit', sans-serif;
  --font-body: 'Karla', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* ===== RESET ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ===== GRAIN OVERLAY ===== */
.grain {
  position: fixed; inset: 0; z-index: 9999; pointer-events: none; opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat; background-size: 200px;
}

/* ===== LAYOUT ===== */
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }

/* ===== TYPOGRAPHY ===== */
.section-eyebrow {
  display: inline-block; font-family: var(--font-mono); font-size: 0.8rem;
  color: var(--accent-text); letter-spacing: 0.08em; text-transform: uppercase;
  margin-bottom: 12px; font-weight: 500;
}
.section-heading {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.15;
  margin-bottom: 48px; color: var(--text);
}

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 16px 0; transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(250,250,247,0.85); backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.nav-container {
  max-width: 1140px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display); font-weight: 800; font-size: 1.15rem;
  color: var(--text); letter-spacing: -0.02em;
}
.nav-menu { display: flex; align-items: center; gap: 32px; }
.nav-menu a {
  font-size: 0.9rem; font-weight: 500; color: var(--text-secondary);
  transition: var(--transition); position: relative;
}
.nav-menu a:not(.nav-cta):hover { color: var(--text); }
.nav-menu a:not(.nav-cta)::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
  background: var(--accent-text); transition: var(--transition);
}
.nav-menu a:not(.nav-cta):hover::after { width: 100%; }
.nav-cta {
  background: var(--accent); color: var(--accent-text) !important;
  padding: 8px 20px; border-radius: 100px; font-weight: 600;
  transition: var(--transition);
}
.nav-cta:hover { background: var(--accent-hover); transform: translateY(-1px); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 4px; z-index: 1001; position: relative; }
.nav-toggle span {
  display: block; width: 24px; height: 2px; background: var(--text);
  transition: var(--transition); border-radius: 2px;
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  text-align: center; position: relative; overflow: hidden; padding: 120px 24px 80px;
  background-image: radial-gradient(circle, rgba(0,0,0,0.03) 1px, transparent 1px);
  background-size: 28px 28px;
}
.hero-decor { position: absolute; inset: 0; pointer-events: none; }
.hero-circle {
  position: absolute; border-radius: 50%; background: var(--accent);
}
.hero-circle--1 { width: 500px; height: 500px; top: -120px; right: -100px; opacity: 0.5; }
.hero-circle--2 { width: 300px; height: 300px; bottom: -60px; left: -80px; opacity: 0.4; }
.hero-circle--3 { width: 160px; height: 160px; top: 30%; left: 8%; opacity: 0.3; }
.hero-content { position: relative; z-index: 2; }
.hero-badge {
  display: inline-block; font-family: var(--font-mono); font-size: 0.85rem;
  font-weight: 500; color: var(--accent-text); background: var(--accent);
  padding: 8px 24px; border-radius: 100px; margin-bottom: 28px;
  letter-spacing: 0.04em;
}
.hero-title {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(2.2rem, 8vw, 7rem); line-height: 1.05;
  letter-spacing: -0.03em; margin-bottom: 20px; color: var(--text);
  word-break: break-word; overflow-wrap: break-word;
}

/* Countdown */
.countdown { display: flex; justify-content: center; gap: 16px; margin-bottom: 48px; }
.countdown-item {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px; min-width: 90px;
  box-shadow: var(--shadow);
}
.countdown-number {
  display: block; font-family: var(--font-mono); font-weight: 700;
  font-size: 2.2rem; color: var(--accent-text); line-height: 1;
}
.countdown-label {
  display: block; font-size: 0.75rem; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.1em; margin-top: 6px;
}

/* CTA Button */
.btn-primary {
  display: inline-block; background: var(--green-dark); color: var(--white);
  padding: 16px 40px; border-radius: 100px; font-family: var(--font-display);
  font-weight: 700; font-size: 1rem; letter-spacing: 0.01em;
  transition: var(--transition); box-shadow: 0 4px 20px rgba(30,63,14,0.2);
}
.btn-primary:hover {
  transform: translateY(-2px); box-shadow: 0 8px 30px rgba(30,63,14,0.3);
}

/* ===== ABOUT ===== */
.about { background: var(--bg); }
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center;
}
.about-body {
  font-size: 1.1rem; line-height: 1.8; color: var(--text-secondary); max-width: 500px;
}
.about-visual {
  position: relative; height: 340px;
}
.about-shape {
  position: absolute; border-radius: var(--radius);
}
.about-shape--1 {
  width: 220px; height: 220px; background: var(--accent); top: 10%; right: 10%;
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  animation: morphBlob 8s ease-in-out infinite;
}
.about-shape--2 {
  width: 160px; height: 160px; border: 2px solid var(--accent-strong);
  top: 40%; right: 40%; border-radius: 50%;
  animation: morphBlob 8s ease-in-out infinite 2s;
}
.about-shape--3 {
  width: 100px; height: 100px; background: var(--accent-hover);
  bottom: 10%; right: 25%; border-radius: 20px;
  animation: float 6s ease-in-out infinite;
}
@keyframes morphBlob {
  0%, 100% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
  50% { border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%; }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}

/* ===== TECHSHARE ABOUT SECTION ===== */
.techshare { background: var(--bg); }
.techshare-stack {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 48px;
  text-align: left;
}
.techshare-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 0;
  max-width: 320px;
  width: 100%;
  justify-self: center; 
}
.techshare-img {
  width: min(100%, 280px);
  height: auto;
  object-fit: contain;
}
.techshare-copy .section-heading { margin-bottom: 16px; text-align: left; }
.techshare-copy p {
  max-width: 100%;
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
}
.techshare-cta { min-width: 180px; text-align: center; align-self: flex-start; }

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .techshare-stack { 
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: center;
  }
  .techshare-card { 
    padding: 28px;
    align-items: center;
  }
  .techshare-copy .section-heading { text-align: center; }
  .techshare-cta { align-self: center; }
}

/* ===== MOBILE / RESPONSIVE ADJUSTMENTS ===== */
@media (max-width: 900px) {
  .container { padding: 0 16px; }
  .nav-toggle { display: flex; }
  .nav-menu { display: none; }
  .nav-menu.open {
    display: flex; flex-direction: column; align-items: center; justify-content: flex-start;
    position: fixed; inset: 0; top: 64px; padding-top: 24px; gap: 18px;
    background: rgba(250,250,247,0.98); backdrop-filter: blur(8px); z-index: 1200; overflow:auto;
  }
  .nav-menu a { font-size: 1.02rem; padding: 12px 8px; }

  .hero { padding: 100px 16px 64px; }
  .hero-title { font-size: clamp(2.6rem, 10vw, 4.2rem); }
  .countdown { gap: 12px; flex-wrap: wrap; }

  .about-grid, .details-grid, .sponsors-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .details-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-card { padding: 20px; }

  .section-heading { font-size: clamp(1.6rem, 3.6vw, 2.2rem); margin-bottom: 28px; }
}

@media (max-width: 600px) {
  .container { padding: 0 12px; }
  .hero { padding: 80px 12px 56px; }
  .hero-title { font-size: clamp(2.2rem, 12vw, 3.6rem); }
  .countdown { flex-direction: column; align-items: center; }

  .about-grid, .details-grid, .sponsors-grid, .techshare-grid { grid-template-columns: 1fr; gap: 24px; }
  .detail-card { padding: 16px; }

  .timeline { max-width: 100%; margin-left: 0; padding-left: 0; }
  .timeline::before { display: none; }

  .nav-menu.open { padding-top: 88px; }

  .techshare-cta {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  .back-to-top { right: 16px; bottom: 16px; width: 44px; height: 44px; }
}

/* Improve touch targets */
a, button { touch-action: manipulation; }


/* ===== DETAILS ===== */
.details { background: var(--bg-alt); }
.details-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.detail-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px 28px; text-align: center;
  transition: var(--transition); box-shadow: var(--shadow);
}
.detail-card:hover {
  transform: translateY(-6px); box-shadow: var(--shadow-hover);
  border-color: var(--accent-strong);
}
.detail-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 64px; height: 64px; border-radius: 16px; background: var(--accent);
  color: var(--accent-text); margin-bottom: 20px;
}
.detail-card h3 {
  font-family: var(--font-display); font-weight: 700; font-size: 1.15rem;
  margin-bottom: 8px;
}
.detail-card p { font-size: 0.92rem; color: var(--text-secondary); }

/* ===== SCHEDULE ===== */
.schedule { background: var(--bg); }
.timeline { max-width: 700px; margin: 0 auto; position: relative; }
.timeline::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  width: 2px; background: var(--border);
}
.timeline-day { margin-bottom: 48px; padding-left: 36px; position: relative; }
.timeline-day::before {
  content: ''; position: absolute; left: -5px; top: 8px;
  width: 12px; height: 12px; border-radius: 50%; background: var(--accent);
  border: 2px solid var(--accent-text);
}
.timeline-day-header { margin-bottom: 20px; display: flex; align-items: center; gap: 16px; }
.timeline-badge {
  font-family: var(--font-mono); font-size: 0.75rem; font-weight: 700;
  background: var(--accent); color: var(--accent-text); padding: 4px 14px;
  border-radius: 100px; text-transform: uppercase; letter-spacing: 0.06em;
}
.timeline-day-header h3 {
  font-family: var(--font-display); font-weight: 700; font-size: 1.15rem;
}
.timeline-events { display: flex; flex-direction: column; gap: 12px; }
.timeline-event {
  display: flex; gap: 20px; align-items: flex-start;
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 20px 24px;
  transition: var(--transition);
}
.timeline-event:hover { border-color: var(--accent-strong); box-shadow: var(--shadow); }
.timeline-time {
  font-family: var(--font-mono); font-size: 0.8rem; font-weight: 500;
  color: var(--accent-text); white-space: nowrap; padding-top: 2px; min-width: 80px;
}
.timeline-event-info h4 {
  font-family: var(--font-display); font-weight: 700; font-size: 1rem; margin-bottom: 4px;
}
.timeline-event-info p { font-size: 0.88rem; color: var(--text-secondary); }

/* ===== FAQ ===== */
.faq { background: var(--bg-alt); }
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border); overflow: hidden;
}
.faq-question {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 24px 0; font-family: var(--font-display); font-weight: 600;
  font-size: 1.05rem; text-align: left; color: var(--text);
  transition: var(--transition); gap: 16px;
}
.faq-question:hover { color: var(--accent-text); }
.faq-chevron {
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0; color: var(--text-muted);
}
.faq-item.active .faq-chevron { transform: rotate(180deg); color: var(--accent-text); }
.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.45s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.35s ease;
  opacity: 0;
}
.faq-item.active .faq-answer {
  grid-template-rows: 1fr;
  opacity: 1;
}
.faq-answer-inner {
  overflow: hidden;
}
.faq-answer p {
  padding-bottom: 24px; font-size: 0.95rem; color: var(--text-secondary); line-height: 1.7;
}
.faq-contact {
  text-align: center; margin-top: 48px; font-size: 1rem; color: var(--text-secondary);
}
.faq-contact a {
  color: var(--accent-text); font-weight: 600; border-bottom: 1px solid var(--accent-strong);
  transition: var(--transition);
}
.faq-contact a:hover { border-color: var(--accent-text); }

/* ===== SPONSORS ===== */
.sponsors { background: var(--bg); }
.sponsors-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.sponsor-box {
  background: var(--white); border: 1px dashed var(--border);
  border-radius: var(--radius); padding: 48px 24px; text-align: center;
  font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-muted);
  transition: var(--transition);
}
.sponsor-box:hover {
  border-color: var(--accent-strong); border-style: solid;
  background: var(--accent); color: var(--accent-text);
}
.sponsors-contact {
  text-align: center; margin-top: 48px; font-size: 1rem; color: var(--text-secondary);
}
.sponsors-contact a {
  color: var(--accent-text); font-weight: 600; border-bottom: 1px solid var(--accent-strong);
  transition: var(--transition);
}
.sponsors-contact a:hover { border-color: var(--accent-text); }

/* ===== FOOTER ===== */
.footer {
  background: #dce8d4; color: var(--text-secondary); padding: 48px 0 0;
  border-top: 1px solid #c5d4bb;
}
.footer-top {
  display: flex; justify-content: space-between; align-items: flex-start;
  padding-bottom: 32px; border-bottom: 1px solid var(--accent-strong);
}
.footer-brand h3 {
  font-family: var(--font-display); font-weight: 800; font-size: 1.2rem;
  color: var(--text); margin-bottom: 4px;
}
.footer-brand p { font-size: 0.9rem; }
.footer-brand a {
  color: var(--accent-text); font-weight: 600; border-bottom: 1px solid var(--accent-strong);
  transition: var(--transition);
}
.footer-brand a:hover { border-color: var(--accent-text); }
.footer-links { display: flex; gap: 24px; }
.footer-links a {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.88rem; font-weight: 500; color: var(--text-secondary);
  transition: var(--transition);
}
.footer-links a:hover { color: var(--accent-text); }
.footer-bottom { padding: 20px 0; text-align: center; }
.footer-bottom p { font-size: 0.8rem; color: var(--text-muted); }

/* ===== BACK TO TOP ===== */
.back-to-top {
  position: fixed; bottom: 32px; right: 32px; width: 48px; height: 48px;
  background: var(--white); border: 1px solid var(--border); border-radius: 50%;
  color: var(--text); display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow); opacity: 0; visibility: hidden;
  transition: var(--transition); z-index: 900;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover {
  background: var(--accent); border-color: var(--accent-strong);
  color: var(--accent-text); transform: translateY(-3px);
}

/* ===== RESOURCES PAGE ===== */
.resources-hero {
  padding: 160px 0 100px;
  background-image: radial-gradient(circle, rgba(0,0,0,0.03) 1px, transparent 1px);
  background-size: 28px 28px;
}
.resources-title {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(2.4rem, 6vw, 5rem); line-height: 1.1;
  letter-spacing: -0.03em; margin-bottom: 20px;
}
.resources-subtitle {
  font-size: 1.1rem; color: var(--text-secondary); max-width: 580px; line-height: 1.75;
  margin-bottom: 56px;
}

/* Category Jump Buttons */
.category-jumps {
  display: flex; gap: 16px; flex-wrap: wrap;
}
.category-jump {
  display: flex; align-items: center; gap: 14px;
  padding: 20px 28px; border-radius: var(--radius);
  border: 1.5px solid transparent; transition: var(--transition);
  text-decoration: none; min-width: 220px;
  box-shadow: var(--shadow);
}
.category-jump-badge {
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 4px 12px; border-radius: 100px;
}
.category-jump-label {
  font-family: var(--font-display); font-weight: 700; font-size: 1rem;
  flex: 1;
}
.category-jump-arrow { flex-shrink: 0; transition: transform var(--transition); }
.category-jump:hover .category-jump-arrow { transform: translateX(4px); }

.category-jump--beginner {
  background: #E9FADC; border-color: #B8E09B; color: #2B5A14;
}
.category-jump--beginner:hover { background: #D6F2C2; border-color: #2B5A14; transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.category-jump--beginner .category-jump-badge { background: #fff; color: #2B5A14; }

.category-jump--intermediate {
  background: #FEF9EC; border-color: #FDE68A; color: #92400E;
}
.category-jump--intermediate:hover { background: #FEF3C7; border-color: #92400E; transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.category-jump--intermediate .category-jump-badge { background: #fff; color: #92400E; }

.category-jump--advanced {
  background: #FDF2F8; border-color: #F9A8D4; color: #9D174D;
}
.category-jump--advanced:hover { background: #FCE7F3; border-color: #9D174D; transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.category-jump--advanced .category-jump-badge { background: #fff; color: #9D174D; }

/* Section layout */
.resources-section--alt { background: var(--bg-alt); }
.resources-section-header { margin-bottom: 36px; }
.resources-section-title {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(1.6rem, 3vw, 2.4rem); margin: 12px 0 12px;
}
.resources-section-desc {
  font-size: 1rem; color: var(--text-secondary); max-width: 560px; line-height: 1.7;
}

/* Level badges */
.level-badge {
  display: inline-block; font-family: var(--font-mono); font-size: 0.75rem;
  font-weight: 700; padding: 5px 16px; border-radius: 100px;
  text-transform: uppercase; letter-spacing: 0.08em;
}
.level-badge--beginner     { background: #E9FADC; color: #2B5A14; }
.level-badge--intermediate { background: #FEF3C7; color: #92400E; }
.level-badge--advanced     { background: #FCE7F3; color: #9D174D; }

/* PDF Card */
.pdf-card {
  display: flex; align-items: center; gap: 24px;
  background: var(--white); border: 1.5px solid #B8E09B;
  border-radius: var(--radius); padding: 28px 32px;
  margin-bottom: 48px; box-shadow: var(--shadow);
  transition: var(--transition);
}
.pdf-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.pdf-card--intermediate { border-color: #FDE68A; }
.pdf-card--advanced     { border-color: #F9A8D4; }
.pdf-card-icon {
  flex-shrink: 0; width: 56px; height: 56px; border-radius: 14px;
  background: #E9FADC; color: #2B5A14;
  display: flex; align-items: center; justify-content: center;
}
.pdf-card--intermediate .pdf-card-icon { background: #FEF3C7; color: #92400E; }
.pdf-card--advanced     .pdf-card-icon { background: #FCE7F3; color: #9D174D; }
.pdf-card-info { flex: 1; }
.pdf-card-info h3 {
  font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; margin-bottom: 4px;
}
.pdf-card-info p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }
.pdf-card-btn {
  display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0;
  background: #2B5A14; color: var(--white);
  padding: 12px 24px; border-radius: 100px;
  font-family: var(--font-display); font-weight: 700; font-size: 0.9rem;
  transition: var(--transition); white-space: nowrap;
  box-shadow: 0 4px 14px rgba(43,90,20,0.2);
}
.pdf-card-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(43,90,20,0.3); }
.pdf-card-btn--intermediate {
  background: #92400E; box-shadow: 0 4px 14px rgba(146,64,14,0.2);
}
.pdf-card-btn--intermediate:hover { box-shadow: 0 8px 20px rgba(146,64,14,0.3); }
.pdf-card-btn--advanced {
  background: #9D174D; box-shadow: 0 4px 14px rgba(157,23,77,0.2);
}
.pdf-card-btn--advanced:hover { box-shadow: 0 8px 20px rgba(157,23,77,0.3); }

/* Video grid */
.video-section-label {
  font-family: var(--font-mono); font-size: 0.78rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted);
  margin-bottom: 20px;
}
.video-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.video-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transition: var(--transition);
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--accent-strong); }
.video-embed {
  position: relative; width: 100%; padding-top: 56.25%; background: var(--bg-alt);
}
.video-embed iframe {
  position: absolute; inset: 0; width: 100%; height: 100%; border: none;
}
.video-info { padding: 20px 24px; }
.video-info h3 {
  font-family: var(--font-display); font-weight: 700; font-size: 1rem; margin-bottom: 6px;
}
.video-info p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.6; }

@media (max-width: 1024px) {
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .category-jumps { gap: 12px; }
}
@media (max-width: 700px) {
  .pdf-card { flex-direction: column; align-items: flex-start; gap: 16px; }
  .category-jump { min-width: unset; width: 100%; }
}
@media (max-width: 600px) {
  .video-grid { grid-template-columns: 1fr; }
}

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0; transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .details-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
    background: var(--bg); flex-direction: column; align-items: flex-start;
    padding: 100px 32px 40px; gap: 24px; transition: right 0.35s ease;
    box-shadow: -10px 0 40px rgba(0,0,0,0.08);
  }
  .nav-menu.open { right: 0; }
  .nav-menu a { font-size: 1.1rem; }
  .hero { min-height: 100svh; padding: 100px 20px 60px; }
  .hero-title { font-size: clamp(2.4rem, 10vw, 4rem); }
  .countdown { gap: 10px; flex-wrap: wrap; justify-content: center; }
  .countdown-item { min-width: 75px; padding: 14px 16px; }
  .countdown-number { font-size: 1.6rem; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-visual { height: 220px; }
  .details-grid { grid-template-columns: 1fr 1fr; }
  .sponsors-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { flex-direction: column; gap: 24px; }
}
@media (max-width: 480px) {
  .details-grid { grid-template-columns: 1fr; }
  .sponsors-grid { grid-template-columns: 1fr 1fr; }
  .timeline-event { flex-direction: column; gap: 8px; }
  .countdown-item { min-width: 65px; padding: 12px 10px; }
}