/* Serving With AI course site — FlareForward course brand palette. */
:root {
  --navy: #1e2a44;
  --amber: #e8a33d;
  --teal: #3a9d8f;
  --paper: #f7f5f0;
  --line: #e4e0d6;
}

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

body {
  font-family: -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--paper);
  color: var(--navy);
  line-height: 1.65;
}

main { max-width: 1000px; margin: 0 auto; padding: 0 24px 60px; }

/* Top bar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 16px 24px;
  background: var(--navy);
}
.topbar .logo { color: #fff; font-weight: 700; text-decoration: none; font-size: 1.1rem; }
.topbar nav a { color: #fff; opacity: 0.85; text-decoration: none; margin-left: 18px; font-size: 0.9rem; }
.topbar nav a:hover { opacity: 1; color: var(--amber); }

/* Hero */
.hero { text-align: center; padding: 64px 0 40px; }
.hero.small { padding: 44px 0 8px; }
.hero h1 { font-size: 2.1rem; margin-bottom: 12px; }
.hero p { max-width: 640px; margin: 0 auto; font-size: 1.05rem; }

/* Sections + cards */
.section { padding: 28px 0; }
.section h2 { font-size: 1.4rem; margin-bottom: 4px; }
.section h2 a { color: var(--navy); text-decoration: none; }
.section h2 a:hover { color: var(--teal); }
.sub { color: #5a6478; margin-bottom: 18px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.card {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  text-decoration: none;
  color: var(--navy);
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 4px 14px rgba(30, 42, 68, 0.1); }
.card h3 { margin-bottom: 6px; font-size: 1.05rem; }
.card p { font-size: 0.9rem; color: #5a6478; }
.card .num { color: var(--amber); font-weight: 700; font-size: 0.85rem; }
.card .dl { display: inline-block; margin-top: 10px; color: var(--teal); font-weight: 600; font-size: 0.85rem; }

/* Lesson page */
.lesson-page { padding-top: 36px; }
.crumb { font-size: 0.85rem; margin-bottom: 8px; }
.crumb a { color: var(--teal); text-decoration: none; }
.lesson-page h1 { font-size: 1.8rem; margin-bottom: 6px; }
.lesson-page video {
  width: 100%;
  border-radius: 10px;
  margin: 20px 0 8px;
  background: #000;
  box-shadow: 0 6px 20px rgba(30, 42, 68, 0.18);
}
.coming-soon {
  margin: 24px 0;
  padding: 28px;
  background: #fff;
  border: 1px dashed var(--amber);
  border-radius: 10px;
  text-align: center;
  color: #5a6478;
}
.downloads a { color: var(--teal); font-weight: 600; text-decoration: none; font-size: 0.9rem; }
.pager { display: flex; justify-content: space-between; margin-top: 28px; font-size: 0.9rem; }
.pager a { color: var(--navy); text-decoration: none; font-weight: 600; }
.pager a:hover { color: var(--teal); }

/* Login */
.login-form { max-width: 320px; margin: 24px auto 0; display: flex; flex-direction: column; gap: 12px; }
.login-form input {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 1rem;
}
.button {
  display: inline-block;
  background: var(--amber);
  color: var(--navy);
  font-weight: 700;
  border: none;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
}
.button:hover { filter: brightness(1.05); }
.error { color: #b3402a; font-size: 0.9rem; }

footer { text-align: center; padding: 28px; color: #5a6478; font-size: 0.85rem; }

@media (max-width: 600px) {
  .hero h1 { font-size: 1.5rem; }
}