/* ============================================================
   National Assessment Day — Stylesheet
   ============================================================ */

:root {
  --navy:       #1D3461;
  --navy-dark:  #142448;
  --navy-light: #2A4A85;
  --red:        #B22234;
  --red-light:  #D43F52;
  --white:      #FFFFFF;
  --gray-50:    #F8F9FA;
  --gray-100:   #E9ECEF;
  --gray-200:   #DEE2E6;
  --gray-400:   #ADB5BD;
  --gray-600:   #6C757D;
  --gray-800:   #343A40;
  --text:       #1A202C;
  --accent:     #E8EFF9;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  font-size: 16px;
}

a { color: var(--navy); }
a:hover { color: var(--red); }

/* ── Header ────────────────────────────────────────────────── */
header {
  background: var(--navy);
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 2px 10px rgba(0,0,0,0.4);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  position: relative;
}

.logo {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  gap: 0.1rem;
}

.logo .site-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.03em;
  line-height: 1.2;
}

.logo .tagline {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ── Navigation ─────────────────────────────────────────────── */
nav ul {
  list-style: none;
  display: flex;
  gap: 0.15rem;
}

nav ul li a {
  display: block;
  color: rgba(255,255,255,0.82);
  text-decoration: none;
  padding: 0.45rem 0.9rem;
  border-radius: 5px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}

nav ul li a:hover {
  color: var(--white);
  background: rgba(255,255,255,0.12);
}

nav ul li a.active {
  color: var(--white);
  background: var(--red);
}

.menu-toggle {
  display: none;
  background: none;
  border: 2px solid rgba(255,255,255,0.4);
  color: var(--white);
  cursor: pointer;
  padding: 0.35rem 0.6rem;
  border-radius: 5px;
  font-size: 1.2rem;
  line-height: 1;
}

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(150deg, var(--navy) 0%, var(--navy-light) 60%, #3A5FA0 100%);
  color: var(--white);
  padding: 5rem 1.5rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 60px,
    rgba(255,255,255,0.02) 60px,
    rgba(255,255,255,0.02) 120px
  );
}

.hero > * { position: relative; }

.hero .flag-stripe {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.hero .flag-stripe span {
  display: inline-block;
  width: 40px;
  height: 6px;
  border-radius: 3px;
}

.hero .flag-stripe .s-red   { background: var(--red); }
.hero .flag-stripe .s-white { background: rgba(255,255,255,0.7); }
.hero .flag-stripe .s-blue  { background: var(--navy-light); }

.hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: var(--white);
  line-height: 1.15;
}

.hero p {
  font-size: 1.125rem;
  color: rgba(255,255,255,0.85);
  max-width: 640px;
  margin: 0 auto 2rem;
}

.hero .date-badge {
  display: inline-block;
  background: var(--red);
  color: var(--white);
  padding: 0.55rem 1.75rem;
  border-radius: 100px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  box-shadow: 0 2px 8px rgba(178,34,52,0.5);
}

/* ── Main content ───────────────────────────────────────────── */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

/* ── Page header (non-home pages) ───────────────────────────── */
.page-header {
  background: var(--accent);
  border-left: 5px solid var(--red);
  padding: 1.5rem 2rem;
  margin-bottom: 2.5rem;
  border-radius: 0 8px 8px 0;
}

.page-header h1 {
  font-size: 1.9rem;
  color: var(--navy);
  margin-bottom: 0.25rem;
}

.page-header .page-desc {
  color: var(--gray-600);
  font-size: 0.95rem;
}

/* ── Typography ─────────────────────────────────────────────── */
h1, h2, h3, h4 { color: var(--navy); line-height: 1.3; }

h2 {
  font-size: 1.6rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--red);
  display: inline-block;
}

h3 { font-size: 1.2rem; margin-bottom: 0.6rem; }

p { margin-bottom: 1rem; max-width: 78ch; }

ul, ol { padding-left: 1.5rem; margin-bottom: 1rem; }
li { margin-bottom: 0.4rem; }

.section { margin-bottom: 3rem; }

/* ── Card grid (home) ───────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-top: 4px solid var(--navy);
  border-radius: 8px;
  padding: 1.25rem;
  transition: box-shadow 0.2s;
}

.card:hover { box-shadow: 0 4px 16px rgba(29,52,97,0.12); }

.card .card-icon { font-size: 2rem; margin-bottom: 0.5rem; display: block; }
.card h3 { font-size: 1rem; margin-bottom: 0.35rem; }
.card p  { font-size: 0.875rem; color: var(--gray-600); margin: 0; max-width: none; }

/* ── Feature boxes ──────────────────────────────────────────── */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.feature-box {
  background: var(--gray-50);
  border-radius: 10px;
  padding: 1.75rem;
  border: 1px solid var(--gray-200);
}

.feature-box .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  background: var(--red);
  color: var(--white);
  border-radius: 50%;
  font-weight: 700;
  margin-bottom: 0.75rem;
  font-size: 1rem;
}

.feature-box h3 { margin-bottom: 0.5rem; }
.feature-box p  { font-size: 0.9rem; color: var(--gray-800); margin: 0; max-width: none; }

/* ── CTA button ─────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--red);
  color: var(--white);
  box-shadow: 0 2px 6px rgba(178,34,52,0.35);
}

.btn-primary:hover { background: var(--red-light); color: var(--white); }

.btn-secondary {
  background: var(--navy);
  color: var(--white);
}

.btn-secondary:hover { background: var(--navy-dark); color: var(--white); }

/* ── Rank filter bar ────────────────────────────────────────── */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  align-items: center;
}

.filter-label {
  font-weight: 600;
  color: var(--navy);
  font-size: 0.875rem;
  margin-right: 0.25rem;
}

.filter-btn {
  padding: 0.35rem 0.85rem;
  border: 2px solid var(--navy);
  border-radius: 100px;
  background: var(--white);
  color: var(--navy);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all 0.15s;
  line-height: 1.4;
}

.filter-btn:hover,
.filter-btn.active { background: var(--navy); color: var(--white); }

.search-wrap {
  margin-left: auto;
  position: relative;
}

.search-wrap::before {
  content: '🔍';
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.75rem;
  pointer-events: none;
}

#searchBox {
  padding: 0.4rem 0.75rem 0.4rem 2rem;
  border: 2px solid var(--gray-200);
  border-radius: 100px;
  font-size: 0.85rem;
  outline: none;
  width: 220px;
  transition: border-color 0.15s;
}

#searchBox:focus { border-color: var(--navy); }

/* ── Ranks table ────────────────────────────────────────────── */
.table-wrapper {
  overflow-x: auto;
  border-radius: 8px;
  box-shadow: 0 1px 6px rgba(0,0,0,0.1);
}

#ranksTable {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

#ranksTable thead th {
  background: var(--navy);
  color: var(--white);
  padding: 0.75rem 0.875rem;
  text-align: left;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

#ranksTable thead th:hover { background: var(--navy-dark); }

#ranksTable thead th.sort-asc::after  { content: ' ↑'; }
#ranksTable thead th.sort-desc::after { content: ' ↓'; }
#ranksTable thead th:not([data-sort])::after { content: ''; }
#ranksTable thead th[data-sort]:not(.sort-asc):not(.sort-desc)::after { content: ' ↕'; opacity: 0.4; }

#ranksTable tbody tr { border-bottom: 1px solid var(--gray-200); }
#ranksTable tbody tr:last-child { border-bottom: none; }
#ranksTable tbody tr:nth-child(even) { background: var(--gray-50); }
#ranksTable tbody tr:hover { background: var(--accent); }

#ranksTable tbody td {
  padding: 0.6rem 0.875rem;
  vertical-align: middle;
}

#ranksTable tbody td:first-child { font-weight: 600; }

.rank-cell {
  font-size: 1rem;
  font-weight: 700;
  white-space: nowrap;
}

/* ── Status badges ──────────────────────────────────────────── */
.status {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 100px;
  font-size: 0.73rem;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: 0.03em;
}

.status-good    { background: #D4EDDA; color: #155724; }
.status-ok      { background: #FFF3CD; color: #856404; }
.status-poor    { background: #F8D7DA; color: #721C24; }
.status-neutral { background: var(--gray-100); color: var(--gray-800); }

/* ── Category badges ────────────────────────────────────────── */
.cat {
  display: inline-block;
  padding: 0.18rem 0.6rem;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  white-space: nowrap;
}

.cat-Business    { background: #CCE5FF; color: #004085; }
.cat-Education   { background: #C3E6CB; color: #155724; }
.cat-Health      { background: #F8D7DA; color: #721C24; }
.cat-Society     { background: #FFF3CD; color: #856404; }
.cat-Military    { background: #D6D8D9; color: #383D41; }
.cat-Technology  { background: #D1ECF1; color: #0C5460; }
.cat-Environment { background: #D4EDDA; color: #155724; }

/* ── Trend indicator ────────────────────────────────────────── */
.trend-up   { color: #28A745; font-size: 1.1rem; }
.trend-down { color: var(--red); font-size: 1.1rem; }
.trend-flat { color: var(--gray-600); font-size: 1.1rem; }

/* ── Legend ─────────────────────────────────────────────────── */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
  align-items: center;
  font-size: 0.8rem;
}

.legend span { display: flex; align-items: center; gap: 0.35rem; }

/* ── Sources list ───────────────────────────────────────────── */
.source-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin: 1rem 0;
}

.source-item {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 1rem 1.25rem;
}

.source-item a {
  font-weight: 600;
  font-size: 0.95rem;
  display: block;
  margin-bottom: 0.25rem;
}

.source-item p { font-size: 0.82rem; color: var(--gray-600); margin: 0; max-width: none; }

/* ── Synopsis sections ──────────────────────────────────────── */
.synopsis-section {
  border-left: 4px solid var(--navy);
  padding-left: 1.5rem;
  margin-bottom: 2.5rem;
}

.synopsis-section h2 {
  border: none;
  padding: 0;
}

/* ── Archive links ──────────────────────────────────────────── */
.archive-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 1rem 0;
}

.archive-link {
  display: inline-block;
  padding: 0.5rem 1rem;
  border: 2px solid var(--navy);
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--navy);
  transition: all 0.15s;
}

.archive-link:hover { background: var(--navy); color: var(--white); }

/* ── Info box ───────────────────────────────────────────────── */
.info-box {
  background: var(--accent);
  border: 1px solid #BDD0EF;
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

.info-box strong { color: var(--navy); }

/* ── Footer ─────────────────────────────────────────────────── */
footer {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.7);
  padding: 3rem 1.5rem 0;
  margin-top: 2rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
}

footer h4 {
  color: var(--white);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 1rem;
}

footer p { font-size: 0.875rem; max-width: none; margin-bottom: 0.5rem; color: rgba(255,255,255,0.65); }

footer ul { list-style: none; padding: 0; }
footer ul li { margin-bottom: 0.4rem; }
footer ul li a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.15s;
}
footer ul li a:hover { color: var(--white); }

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.25rem 0;
  border-top: 1px solid rgba(255,255,255,0.12);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.4);
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 860px) {
  .menu-toggle { display: block; }

  nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--navy-dark);
    padding: 0.75rem 1rem 1rem;
    border-top: 1px solid rgba(255,255,255,0.1);
  }

  nav.open { display: block; }

  nav ul {
    flex-direction: column;
    gap: 0.25rem;
  }

  nav ul li a { padding: 0.65rem 1rem; font-size: 0.95rem; }

  .hero h1 { font-size: 2rem; }
  .hero p  { font-size: 1rem; }
  .hero   { padding: 3.5rem 1.25rem 3rem; }

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

  .footer-inner { grid-template-columns: 1fr 1fr; }

  .search-wrap { margin-left: 0; }
  #searchBox { width: 100%; }

  .page-header h1 { font-size: 1.5rem; }
}

@media (max-width: 520px) {
  main { padding: 1.5rem 1rem 3rem; }
  .footer-inner { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.6rem; }
  .card-grid { grid-template-columns: 1fr 1fr; }
}