/* ── Reset & Base ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green-dark:   #1B4332;
  --green-mid:    #2D6A4F;
  --green-light:  #52796F;
  --cream:        #F8F6F1;
  --amber:        #B97A2A;
  --amber-hover:  #9A6522;
  --text:         #1A1A1A;
  --text-muted:   #4A4A4A;
  --border:       #D8D0C5;
}

html { scroll-behavior: smooth; }

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--cream);
  line-height: 1.65;
  font-size: 1rem;
}

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

/* ── Notice Bar ─────────────────────────────────────────────────── */
.notice-bar {
  background: var(--amber);
  color: white;
  text-align: center;
  padding: 0.65rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
}

/* ── Navigation ─────────────────────────────────────────────────── */
nav {
  background: var(--green-dark);
  padding: 0.85rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.nav-title {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.1rem;
  color: white;
  text-decoration: none;
  letter-spacing: 0.02em;
}

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

.nav-links a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 0.875rem;
  letter-spacing: 0.03em;
  transition: color 0.15s;
}

.nav-links a:hover,
.nav-links a.active { color: white; }

.nav-links a.active { font-weight: 600; }

/* ── Hamburger toggle ───────────────────────────────────────────── */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: white;
  border-radius: 2px;
  transform-origin: center;
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 640px) {
  .nav-toggle { display: flex; }

  .nav-links {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--green-dark);
    padding: 0.5rem 0 1rem;
    box-shadow: 0 6px 16px rgba(0,0,0,0.35);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .nav-links.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-links a {
    padding: 0.75rem 2rem;
    font-size: 1rem;
    letter-spacing: 0.02em;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .nav-links li:last-child a { border-bottom: none; }
}

/* ── Buttons ────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 0.8rem 1.75rem;
  border-radius: 4px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  line-height: 1;
  text-align: center;
}

.btn-amber {
  background: var(--amber);
  color: white;
  border-color: var(--amber);
}
.btn-amber:hover { background: var(--amber-hover); border-color: var(--amber-hover); }

.btn-outline-white {
  background: transparent;
  color: white;
  border-color: rgba(255,255,255,0.75);
}
.btn-outline-white:hover { background: rgba(255,255,255,0.12); border-color: white; }

.btn-green {
  background: var(--green-mid);
  color: white;
  border-color: var(--green-mid);
}
.btn-green:hover { background: var(--green-dark); border-color: var(--green-dark); }

/* ── Layout Helpers ─────────────────────────────────────────────── */
.container      { max-width: 820px;  margin: 0 auto; }
.container-wide { max-width: 1100px; margin: 0 auto; }

.section-label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green-light);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: var(--green-dark);
  line-height: 1.2;
  margin-bottom: 1.25rem;
}

/* ── Timeline ───────────────────────────────────────────────────── */
.timeline {
  margin: 3.5rem 0 1rem;
  padding-left: 1rem;
  border-left: 3px solid #D0E8DA;
}

.timeline-item {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -1.65rem;
  top: 5px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--green-mid);
  border: 3px solid white;
  box-shadow: 0 0 0 2px var(--green-mid);
}

.timeline-year {
  font-family: Georgia, serif;
  font-weight: bold;
  font-size: 1.05rem;
  color: var(--green-dark);
  padding-top: 0.1rem;
}

.timeline-body strong {
  display: block;
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 0.35rem;
}

.timeline-body p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── Key Facts ──────────────────────────────────────────────────── */
.facts-section {
  background: var(--green-dark);
  padding: 5.5rem 2rem;
}

.facts-section .section-label { color: rgba(255,255,255,0.5); }
.facts-section h2 { color: white; }

.facts-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
}

@media (max-width: 860px) { .facts-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .facts-grid { grid-template-columns: 1fr; } }

.fact-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  padding: 1.75rem 1.5rem;
}

.fact-stat {
  font-family: Georgia, serif;
  font-size: 2.6rem;
  font-weight: bold;
  color: var(--amber);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.fact-label {
  font-weight: 700;
  font-size: 0.95rem;
  color: white;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.fact-detail {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.6;
}

/* ── Document List ──────────────────────────────────────────────── */
.doc-list {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.doc-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s, background 0.2s;
}

.doc-item:hover {
  border-color: var(--green-mid);
  background: #F0F7F3;
}

.doc-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.doc-info strong {
  display: block;
  font-size: 0.975rem;
  color: var(--green-dark);
  margin-bottom: 0.25rem;
}

.doc-info span { font-size: 0.875rem; color: var(--text-muted); }

/* ── Footer ─────────────────────────────────────────────────────── */
footer {
  background: #111;
  color: rgba(255,255,255,0.65);
  padding: 3.5rem 2rem;
  text-align: center;
}

footer h3 {
  font-family: Georgia, serif;
  font-size: 1.2rem;
  color: white;
  margin-bottom: 0.5rem;
}

footer p {
  font-size: 0.875rem;
  line-height: 1.7;
  max-width: 520px;
  margin: 0 auto;
}

footer .footer-meta {
  margin-top: 2rem;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
}

/* ── Utilities ──────────────────────────────────────────────────── */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }