/* Mr B Computing: shared styles for every page */
:root {
  --bg: #f4f6fb;
  --panel: #ffffff;
  --ink: #1d2433;
  --muted: #5b6478;
  --line: #dde2ec;
  --brand: #2b59c3;
  --brand-dark: #1d3f8f;
  --cover: #d9822b;
  --ks3: #2e9e6a;
  --gcse: #2b59c3;
  --alevel: #8a3fbf;
  --radius: 14px;
  --shadow: 0 2px 10px rgba(20, 30, 60, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.5;
}

a { color: var(--brand); }

.wrap { max-width: 1100px; margin: 0 auto; padding: 0 16px; }

/* Header */
.site-header {
  background: var(--brand-dark);
  color: #fff;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.logo {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.5px;
}
.logo span { color: #9ec0ff; }
.nav { display: flex; flex-wrap: wrap; gap: 6px; }
.nav a {
  color: #fff;
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.95rem;
}
.nav a:hover, .nav a.active { background: rgba(255, 255, 255, 0.18); }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--brand-dark), var(--brand));
  color: #fff;
  padding: 48px 0 56px;
}
.hero h1 { margin: 0 0 8px; font-size: 2.2rem; }
.hero p { margin: 0; font-size: 1.15rem; opacity: 0.92; max-width: 640px; }

.page-title { padding: 32px 0 8px; }
.page-title h1 { margin: 0 0 4px; font-size: 1.9rem; }
.page-title p { margin: 0; color: var(--muted); }

/* Homepage section cards */
.big-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
  margin: -32px 0 40px;
}
.big-card {
  display: block;
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px 22px;
  text-decoration: none;
  color: var(--ink);
  border-top: 6px solid var(--brand);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.big-card:hover { transform: translateY(-3px); box-shadow: 0 6px 18px rgba(20, 30, 60, 0.14); }
.big-card h2 { margin: 0 0 6px; font-size: 1.35rem; }
.big-card p { margin: 0; color: var(--muted); font-size: 0.97rem; }
.big-card .count { margin-top: 12px; font-size: 0.85rem; font-weight: 600; color: var(--muted); }
.big-card.cover { border-top-color: var(--cover); }
.big-card.ks3 { border-top-color: var(--ks3); }
.big-card.gcse { border-top-color: var(--gcse); }
.big-card.alevel { border-top-color: var(--alevel); }

/* Search and jump links */
.tools {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin: 18px 0 8px;
}
.search {
  flex: 1 1 260px;
  padding: 10px 14px;
  font-size: 1rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
}
.jump { display: flex; flex-wrap: wrap; gap: 6px; }
.jump a {
  font-size: 0.85rem;
  text-decoration: none;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--ink);
}
.jump a:hover { border-color: var(--brand); color: var(--brand); }

/* Groups and resource cards */
.group { margin: 28px 0; }
.group h2 {
  font-size: 1.3rem;
  margin: 0 0 12px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--line);
}
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 14px;
}
.card {
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 16px 14px;
  text-decoration: none;
  color: var(--ink);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.card:hover { border-color: var(--brand); box-shadow: var(--shadow); }
.card h3 { margin: 6px 0 4px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.92rem; flex: 1; }
.card .topic { margin-top: 10px; font-size: 0.8rem; color: var(--muted); }
.badge {
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 3px 8px;
  border-radius: 6px;
  background: #e8eefc;
  color: var(--brand-dark);
}
.empty {
  color: var(--muted);
  font-style: italic;
  background: var(--panel);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.no-results { display: none; }

/* Footer */
.site-footer {
  margin-top: 56px;
  padding: 24px 0;
  color: var(--muted);
  font-size: 0.88rem;
  border-top: 1px solid var(--line);
}

@media (max-width: 600px) {
  .hero h1 { font-size: 1.7rem; }
  .big-cards { margin-top: -24px; }
}