:root {
  --green: #1B5E20;
  --green-light: #2E7D32;
  --black: #121212;
  --bg: #F7F8F6;
  --card: #FFFFFF;
  --danger: #B3261E;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: #1A1A1A;
}
.no-select { user-select: none; -webkit-user-select: none; }
.container { max-width: 900px; margin: 0 auto; padding: 24px 20px 80px; }

.topnav {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--black); padding: 14px 24px;
}
.topnav .brand { color: #fff; font-weight: 700; text-decoration: none; font-size: 18px; }
.topnav .nav-links a { color: #ccc; text-decoration: none; margin-left: 20px; font-size: 14px; }
.topnav .nav-links a:hover { color: #fff; }

.hero {
  background: linear-gradient(135deg, var(--black), var(--green));
  color: #fff; text-align: center; padding: 80px 20px 60px;
}
.hero h1 { font-size: 42px; margin-bottom: 8px; }
.tagline { opacity: .9; max-width: 560px; margin: 0 auto 28px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; }

.btn {
  display: inline-block; background: var(--green-light); color: #fff;
  padding: 12px 22px; border-radius: 8px; text-decoration: none; border: none;
  font-size: 15px; cursor: pointer;
}
.btn:hover { background: var(--green); }
.btn.outline { background: transparent; border: 1px solid #fff; }
.btn.small { padding: 6px 12px; font-size: 13px; }
.btn.danger { background: var(--danger); }

.tier-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 16px; margin: 20px 0 40px; }
.tier-box { background: var(--card); border-radius: 10px; padding: 20px; box-shadow: 0 1px 4px rgba(0,0,0,.08); }
.tier-box h3 { color: var(--green); margin-top: 0; }

.auth-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.auth-card { background: var(--card); padding: 40px; border-radius: 12px; width: 360px; box-shadow: 0 2px 12px rgba(0,0,0,.1); text-align: center; }
.auth-card h1 { color: var(--green); margin-bottom: 0; font-size: 24px; }
.auth-card form { text-align: left; margin-top: 20px; }
.auth-card label { display: block; margin-bottom: 14px; font-size: 14px; }
.auth-card input { width: 100%; padding: 10px; margin-top: 4px; border: 1px solid #ccc; border-radius: 6px; }
.error { color: var(--danger); font-size: 14px; }
.success { color: var(--green); font-size: 14px; }
.muted { color: #777; font-size: 13px; }

.tier-heading { color: var(--green); border-bottom: 2px solid var(--green-light); padding-bottom: 6px; margin-top: 36px; }
.module-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 14px; }
.module-card {
  background: var(--card); border-radius: 10px; padding: 18px; text-decoration: none; color: #1a1a1a;
  box-shadow: 0 1px 4px rgba(0,0,0,.08); display: flex; flex-direction: column; gap: 6px;
  border-left: 4px solid var(--green-light);
}
.module-card.done { border-left-color: #999; opacity: .85; }
.module-num { font-size: 12px; color: #888; text-transform: uppercase; }
.module-title { font-weight: 600; }
.module-status { font-size: 13px; color: var(--green); }

.lesson-page { position: relative; }
.watermark-tag {
  font-size: 11px; color: #aaa; text-align: right; margin-bottom: 10px;
}
.lesson-content h3 { color: var(--green); margin-top: 28px; }
.lesson-content blockquote {
  border-left: 3px solid var(--green-light); margin: 12px 0; padding: 8px 16px;
  background: #fff; font-style: italic; color: #333;
}
.video-script-box {
  background: #eef4ee; border-radius: 10px; padding: 20px; margin-top: 40px;
}
.complete-form { margin-top: 30px; }
.lesson-nav { display: flex; justify-content: space-between; margin-top: 20px; }
.lesson-nav a { color: var(--green); text-decoration: none; font-weight: 600; }
.breadcrumb a { color: #888; text-decoration: none; font-size: 14px; }

.admin-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 8px; overflow: hidden; }
.admin-table th, .admin-table td { padding: 10px 12px; border-bottom: 1px solid #eee; font-size: 14px; text-align: left; }
.status-pill { padding: 2px 10px; border-radius: 20px; font-size: 12px; }
.status-pending { background: #fff3cd; color: #856404; }
.status-approved { background: #d4edda; color: #155724; }
.status-revoked { background: #f8d7da; color: #721c24; }
.actions form { margin-right: 4px; }