/* ===== Tokens ===== */
:root {
  --navy-900: #0d1b2e;
  --navy-800: #132a46;
  --navy-700: #1c3a5e;
  --navy-600: #274d78;
  --ink: #16202c;
  --ink-soft: #4a5568;
  --paper: #fbf9f5;
  --paper-alt: #f1ece1;
  --line: #e4ddcd;
  --gold-300: #f0c470;
  --gold-500: #e9a93b;
  --gold-600: #c98a1f;
  --white: #ffffff;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(13, 27, 46, 0.08);
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--navy-900);
  margin: 0 0 0.5em;
  font-weight: 600;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em; color: var(--ink-soft); }

a { color: inherit; }

section { padding: 88px 0; }
section.alt { background: var(--paper-alt); }
section.tight { padding: 56px 0; }

.section-head { max-width: 680px; margin-bottom: 44px; }
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); }
.section-head p:last-child { margin-bottom: 0; }

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold-600);
  margin-bottom: 10px;
}

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 249, 245, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--navy-900);
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.brand-accent { color: var(--gold-600); font-weight: 600; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--navy-900);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color 0.15s;
}

.nav-links a:hover { color: var(--navy-900); }

.nav-cta {
  background: var(--navy-900);
  color: var(--white) !important;
  padding: 8px 16px;
  border-radius: 100px;
  font-weight: 600 !important;
}

.nav-cta:hover { background: var(--navy-700); }

/* ===== Hero ===== */
.hero {
  padding: 64px 0 72px;
  background:
    radial-gradient(1100px 500px at 85% -10%, rgba(233, 169, 59, 0.14), transparent 60%),
    linear-gradient(180deg, var(--paper) 0%, var(--paper) 100%);
}

.hero-top {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 100px;
  background: var(--navy-900);
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 600;
}

.badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold-500);
}

.badge-outline {
  background: transparent;
  color: var(--navy-900);
  border: 1px solid var(--navy-900);
}

.badge-link {
  text-decoration: none;
  transition: opacity 0.15s;
}

.badge-link:hover { opacity: 0.7; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: start;
}

.hero h1 {
  font-size: clamp(2.1rem, 4vw, 3rem);
  line-height: 1.12;
  margin-bottom: 0.45em;
}

.hero h1 em { font-style: italic; color: var(--gold-600); }

.hero-sub {
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 54ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 26px 0 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
  border: 1.5px solid transparent;
}

.btn-gold {
  background: linear-gradient(180deg, var(--gold-300), var(--gold-500));
  color: var(--navy-900);
  box-shadow: 0 6px 16px rgba(233, 169, 59, 0.35);
}

.btn-gold:hover { transform: translateY(-1px); box-shadow: 0 10px 22px rgba(233, 169, 59, 0.42); }

.btn-outline {
  background: transparent;
  border-color: var(--navy-900);
  color: var(--navy-900);
}

.btn-outline:hover { background: var(--navy-900); color: var(--white); }

.btn-disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-disabled:hover { transform: none; box-shadow: none; }

.hero-panel {
  background: var(--navy-900);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.panel-label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gold-300);
  margin-bottom: 16px;
}

.pair-chip-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pair-chip {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  padding: 10px 14px;
  color: var(--white);
  font-size: 0.92rem;
  font-weight: 500;
}

.panel-caption {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.55);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 14px;
}

/* ===== Overview ===== */
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.ov-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}

.ov-card h3 { font-size: 1.1rem; margin-bottom: 0.5em; }
.ov-card p { margin-bottom: 0; font-size: 0.95rem; }

/* ===== Directions table ===== */
.table-scroll { overflow-x: auto; margin-bottom: 48px; }

.pairs-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  min-width: 560px;
}

.pairs-table th, .pairs-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}

.pairs-table th {
  background: var(--navy-900);
  color: var(--white);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pairs-table td:first-child { color: var(--gold-600); font-weight: 700; }
.pairs-table tbody tr:last-child td { border-bottom: none; }
.pairs-table tbody tr:hover { background: var(--paper-alt); }

.objectives h3 { font-size: 1.2rem; margin-bottom: 0.8em; }

.obj-list {
  margin: 0;
  padding-left: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.obj-list li {
  position: relative;
  padding-left: 28px;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

.obj-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--gold-600);
  font-weight: 700;
}

/* ===== Dataset ===== */
.stats-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  background: var(--navy-900);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 24px;
}

.panel-h {
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
  font-weight: 700;
}

.split-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.92rem;
}

.split-row b { color: var(--gold-300); font-family: var(--font-display); font-size: 1.05rem; }
.split-row.total { border-bottom: none; font-weight: 700; color: #fff; }
.split-row.total span { color: #fff; }

.note-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold-500);
  border-radius: 10px;
  padding: 18px 22px;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.note-card strong { color: var(--navy-900); }

.hf-link {
  display: inline-block;
  font-weight: 600;
  color: var(--gold-600);
  text-decoration: none;
  margin: 0 2px;
}

.hf-link:hover { text-decoration: underline; }

/* ===== Submission tasks ===== */
.tasks-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 20px;
}

.task-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.task-kicker {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 100px;
  margin-bottom: 12px;
}

.task-card.a .task-kicker { background: rgba(233, 169, 59, 0.15); color: var(--gold-600); }
.task-card.b .task-kicker { background: rgba(28, 58, 94, 0.1); color: var(--navy-700); }

.task-card h3 { font-size: 1.25rem; }
.track-limit { font-size: 0.9rem; color: var(--ink-soft); margin-bottom: 0; }
.track-limit strong { color: var(--navy-900); }

.fine-print { font-size: 0.85rem; color: var(--ink-soft); margin: 0; }

/* ===== Timeline ===== */
.timeline {
  position: relative;
  padding-left: 0;
}

.tl-line {
  position: absolute;
  left: 128px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--line);
}

.tl-progress {
  position: absolute;
  left: 128px;
  top: 6px;
  width: 2px;
  height: 0;
  background: linear-gradient(180deg, var(--gold-500), var(--gold-300));
  transition: height 0.6s ease;
}

.tl-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 16px 0;
}

.tl-date {
  width: 108px;
  flex-shrink: 0;
  text-align: right;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-soft);
  padding-top: 2px;
}

.tl-dot-col {
  width: 40px;
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  padding-top: 4px;
}

.tl-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--line);
  z-index: 2;
}

.tl-item.done .tl-dot { background: var(--gold-500); border-color: var(--gold-500); }
.tl-item.next .tl-dot { background: var(--navy-900); border-color: var(--gold-500); box-shadow: 0 0 0 4px rgba(233, 169, 59, 0.25); }

.tl-body h4 {
  font-family: var(--font-body);
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--navy-900);
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.tl-note { font-weight: 400; color: var(--ink-soft); font-size: 0.88rem; }

.tl-pill {
  background: var(--gold-500);
  color: var(--navy-900);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  border-radius: 100px;
}

.tl-now-dot {
  position: absolute;
  left: 122px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--navy-900);
  border: 3px solid var(--gold-500);
  z-index: 3;
  transform: translateY(-7px);
}

.tl-now-label {
  position: absolute;
  left: 148px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--gold-600);
  background: var(--paper);
  padding: 2px 8px;
  border-radius: 100px;
  border: 1px solid var(--gold-300);
  transform: translateY(-11px);
  white-space: nowrap;
}

/* ===== Register / Join ===== */
.join {
  background: var(--navy-900);
  border-radius: 20px;
  padding: 48px;
}

.join h2 { color: #fff; }
.join p { color: rgba(255, 255, 255, 0.75); }

.join-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.join-actions { margin-top: 22px; }

.join-steps {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.join-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.join-step .num {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(233, 169, 59, 0.15);
  color: var(--gold-300);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

.join-step p { color: #fff; margin: 0 0 2px; font-weight: 600; font-size: 0.95rem; }
.join-step span { color: rgba(255, 255, 255, 0.6); font-size: 0.85rem; }

/* ===== Organizers ===== */
.org-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 36px;
}

.org-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px 20px 20px;
  text-align: center;
}

.org-photo-wrap {
  position: relative;
  width: 88px;
  height: 88px;
  margin: 0 auto 14px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--paper-alt);
  border: 3px solid var(--paper-alt);
  display: flex;
  align-items: center;
  justify-content: center;
}

.org-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.org-photo-wrap.img-fallback::after {
  content: attr(data-initials);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--navy-700);
}

.org-card h4 { font-size: 1.02rem; margin-bottom: 4px; }

.org-card h4 a {
  text-decoration: none;
  color: var(--navy-900);
  transition: color 0.15s;
}

.org-card h4 a:hover { color: var(--gold-600); text-decoration: underline; }

.aff { font-size: 0.8rem; color: var(--gold-600); font-weight: 600; margin-bottom: 8px; }
.org-note { font-size: 0.85rem; color: var(--ink-soft); margin: 0; text-align: left; }

.contact-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--paper-alt);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px 26px;
}

.contact-question { font-weight: 600; color: var(--navy-900); }

.contact-links { display: flex; align-items: center; gap: 10px; }

.contact-tag {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gold-600);
}

.contact-pending {
  color: var(--ink-soft);
  font-style: italic;
  font-size: 0.92rem;
}

/* ===== Footer ===== */
footer {
  background: var(--navy-900);
  color: rgba(255, 255, 255, 0.7);
  padding: 56px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 10px;
}

.footer-logo { width: 30px; height: 30px; }

.fine { font-size: 0.85rem; color: rgba(255, 255, 255, 0.55); margin: 0; }

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-content: flex-start;
}

.footer-links a {
  text-decoration: none;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.75);
}

.footer-links a:hover { color: var(--gold-300); }

.footer-note {
  padding-top: 22px;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== Responsive ===== */
@media (max-width: 860px) {
  .hero-grid, .overview-grid, .stats-panel, .tasks-grid, .join-grid {
    grid-template-columns: 1fr;
  }
  .org-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  section { padding: 56px 0; }
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 16px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-cta { align-self: flex-start; }
  .org-grid { grid-template-columns: 1fr; }
  .tl-date { width: 82px; font-size: 0.74rem; }
  .tl-line, .tl-progress { left: 102px; }
  .tl-now-dot { left: 96px; }
  .tl-now-label { left: 122px; }
  .join { padding: 28px; }
}