/* Extends styles.css's shared tokens (--navy/--gold/--border/--shadow/etc.) for the
   public marketing/catalog landing page (Design/requirements.md §1c, §0's
   "no login wall" resolution). Kept on the same visual language as login.css
   rather than introducing a second identity. */

body { margin: 0; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; }
.tabular { font-variant-numeric: tabular-nums; }

/* ---------- header / mega-nav ---------- */
.app-header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 60;
}
.header-row {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.brand { display: flex; align-items: center; flex: none; }
.brand img { height: 40px; width: auto; display: block; }

.mega-nav { display: flex; align-items: center; gap: 26px; flex: 1; }
.mega-item { position: relative; }
.mega-item > a {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 0;
}
.mega-item > a .caret { font-size: 0.6rem; color: var(--text-muted); }
.mega-panel {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  padding: 16px;
  display: none;
  gap: 22px;
  width: max-content;
  max-width: 520px;
  z-index: 70;
}
.mega-item:hover .mega-panel,
.mega-item:focus-within .mega-panel { display: flex; }
.mega-col h5 {
  margin: 0 0 8px;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--gold);
}
.mega-col a { display: block; font-size: 0.8rem; color: var(--text); padding: 4px 0; }
.mega-col a:hover { color: var(--navy); }
@media (prefers-color-scheme: dark) { .mega-col a:hover { color: var(--gold-light); } }
.mega-col a.locked-link { color: var(--chip-off-text); cursor: default; }
.mega-col a.locked-link:hover { color: var(--chip-off-text); }
.mega-col a.locked-link em { font-style: normal; font-size: 0.68rem; margin-left: 4px; }

.header-right { display: flex; align-items: center; gap: 10px; flex: none; }
.btn {
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 9px 16px;
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-ghost { background: transparent; border-color: var(--navy); color: var(--navy); }
@media (prefers-color-scheme: dark) { .btn-ghost { border-color: var(--gold-light); color: var(--gold-light); } }
.btn-solid { background: linear-gradient(135deg, var(--navy-light), var(--navy)); color: #fff; }
.btn-gold { background: var(--gold); color: #241a00; }

/* secondary strip */
.sub-strip { background: var(--navy-pale); border-bottom: 1px solid var(--border); }
.sub-strip-row {
  max-width: 1200px;
  margin: 0 auto;
  padding: 9px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  overflow-x: auto;
}
.stream-chip {
  flex: none;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 13px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  background: rgba(10, 27, 77, 0.06);
  color: var(--text-muted);
}
@media (prefers-color-scheme: dark) { .stream-chip { background: rgba(255, 255, 255, 0.06); } }
.stream-chip.active { background: var(--navy); color: #fff; }
.stream-chip.off { background: transparent; color: var(--chip-off-text); border: 1px dashed var(--border); }
.stream-chip .tag { font-size: 0.62rem; text-transform: uppercase; opacity: 0.8; }

/* ---------- hero ---------- */
.hero-wrap { background: linear-gradient(180deg, var(--navy-pale), var(--bg)); }
.hero-inner { max-width: 1200px; margin: 0 auto; padding: 34px 20px 30px; }
.hero-inner h1 { margin: 0 0 8px; font-size: 1.5rem; color: var(--navy); max-width: 640px; }
@media (prefers-color-scheme: dark) { .hero-inner h1 { color: var(--gold-light); } }
.hero-inner p.lede { margin: 0 0 22px; color: var(--text-muted); max-width: 560px; font-size: 0.92rem; }

.tier-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tier-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.tier-card .t-icon { font-size: 1.4rem; }
.tier-card .t-slug { font-size: 0.64rem; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 800; color: var(--gold); }
.tier-card h3 { margin: 0; font-size: 1rem; line-height: 1.3; }
.tier-card p { margin: 0; font-size: 0.8rem; color: var(--text-muted); line-height: 1.45; }
.tier-card hr { border: none; border-top: 1px solid var(--border-soft); margin: 6px 0; }
.tier-card .price-row { display: flex; align-items: baseline; justify-content: space-between; }
.tier-card .price { font-size: 0.85rem; font-weight: 800; color: var(--navy); }
@media (prefers-color-scheme: dark) { .tier-card .price { color: var(--gold-light); } }
.tier-card .price span { font-weight: 500; color: var(--text-muted); font-size: 0.72rem; }
.tier-cta {
  margin-top: 4px;
  text-align: left;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--gold);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}
.tier-card.soon { opacity: 0.72; }
.tier-card.soon .tier-cta { color: var(--chip-off-text); cursor: default; }
.tier-card .tier-status {
  align-self: flex-start;
  font-size: 0.64rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 2px 8px;
  border-radius: 999px;
  margin-bottom: -2px;
}
.tier-card .tier-status.soon { background: var(--chip-off-bg); color: var(--chip-off-text); opacity: 1; }
.tier-card .tier-status.live { background: rgba(26, 127, 55, 0.12); color: var(--success); }
.tier-card .tier-status.selected { background: rgba(200, 150, 46, 0.16); color: var(--gold); }
.tier-card.selected { border-color: var(--gold); box-shadow: 0 0 0 2px rgba(200, 150, 46, 0.25), var(--shadow); }
.tier-card .tier-enrolled-courses { font-size: 0.78rem; color: var(--text-muted); margin: 0; }
.tier-card .tier-enrolled-courses strong { color: var(--navy); }
@media (prefers-color-scheme: dark) { .tier-card .tier-enrolled-courses strong { color: var(--gold-light); } }

/* ---------- subject / course sections ---------- */
.page-wrap { max-width: 1200px; margin: 0 auto; padding: 8px 20px 10px; }
.subject-section { padding: 34px 0; border-top: 1px solid var(--border-soft); }
.subject-head { display: flex; align-items: center; gap: 12px; margin-bottom: 4px; }
.subject-head .s-icon {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--navy-pale);
  font-size: 1.05rem;
}
.subject-head h2 { margin: 0; font-size: 1.15rem; color: var(--navy); }
@media (prefers-color-scheme: dark) { .subject-head h2 { color: var(--gold-light); } }
.subject-head .s-status {
  font-size: 0.66rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  border-radius: 999px;
}
.s-status.live { background: rgba(26, 127, 55, 0.12); color: var(--success); }
.s-status.soon { background: var(--chip-off-bg); color: var(--chip-off-text); }
.subject-sub { margin: 2px 0 18px 50px; font-size: 0.82rem; color: var(--text-muted); }

.course-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.course-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.course-thumb {
  height: 86px;
  background: linear-gradient(135deg, var(--navy-light), var(--navy));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.6rem;
}
.course-body { padding: 14px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.course-body h4 { margin: 0; font-size: 0.88rem; line-height: 1.3; }
.course-body .c-meta { font-size: 0.74rem; color: var(--text-muted); }
.course-body .c-foot { margin-top: auto; display: flex; align-items: center; justify-content: flex-end; padding-top: 8px; }
.course-body .c-link { font-size: 0.76rem; font-weight: 700; color: var(--gold); }

.class-grid-title { font-size: 0.78rem; font-weight: 700; color: var(--text-muted); margin: 22px 0 10px 50px; text-transform: uppercase; letter-spacing: 0.03em; }
.class-links { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px 16px; margin-left: 50px; }
.class-links a { font-size: 0.8rem; color: var(--text); padding: 7px 0; border-bottom: 1px solid var(--border-soft); display: flex; justify-content: space-between; }
.class-links a:hover { color: var(--navy); }
@media (prefers-color-scheme: dark) { .class-links a:hover { color: var(--gold-light); } }

.soon-panel {
  margin-left: 50px;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-muted);
}
.soon-panel .sp-icon { font-size: 1.6rem; }
.soon-panel strong { color: var(--text); display: block; margin-bottom: 2px; font-size: 0.9rem; }
.soon-panel p { margin: 0; font-size: 0.8rem; }

.vertical-grid { margin-left: 50px; display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.vertical-card {
  background: var(--card-bg);
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  padding: 16px 10px;
  text-align: center;
  opacity: 0.85;
}
.vertical-card .v-icon { font-size: 1.5rem; margin-bottom: 8px; }
.vertical-card h4 { margin: 0 0 8px; font-size: 0.82rem; }

/* ---------- courses we offer ---------- */
.offer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  background: var(--navy-pale);
  border-radius: var(--radius);
  padding: 24px;
}
.offer-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 18px;
  text-align: center;
}
.offer-card.soon { opacity: 0.8; }
.offer-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: var(--navy-pale);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}
.offer-card h3 { margin: 0 0 6px; font-size: 0.98rem; color: var(--navy); }
@media (prefers-color-scheme: dark) { .offer-card h3 { color: var(--gold-light); } }
.offer-card p { margin: 0 0 16px; font-size: 0.82rem; color: var(--text-muted); line-height: 1.4; }
.offer-cta {
  display: inline-block;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--navy-light), var(--navy));
  color: #fff;
}
.offer-cta.disabled {
  background: var(--chip-off-bg);
  color: var(--chip-off-text);
}

/* ---------- contact bar ---------- */
.contact-bar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.contact-bar span { font-size: 0.92rem; color: var(--text); }
.contact-bar a[href^="mailto"] { color: var(--navy); font-weight: 700; }
@media (prefers-color-scheme: dark) { .contact-bar a[href^="mailto"] { color: var(--gold-light); } }

/* ---------- footer ---------- */
.app-footer { background: var(--navy); color: #c7cdf0; margin-top: 40px; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 40px 20px 20px; }
.footer-cols { display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: 24px; padding-bottom: 26px; border-bottom: 1px solid rgba(255, 255, 255, 0.12); }
.footer-cols h5 { margin: 0 0 12px; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--gold-light); }
.footer-cols a { display: block; font-size: 0.8rem; color: #c7cdf0; padding: 4px 0; }
.footer-cols a:hover { color: #fff; }
.footer-about p { font-size: 0.8rem; line-height: 1.55; color: #aab0d6; margin: 0 0 14px; }
.footer-contact { font-size: 0.8rem; color: #dfe3f7; display: flex; flex-direction: column; gap: 6px; }
.footer-bottom { padding-top: 16px; display: flex; justify-content: space-between; align-items: center; font-size: 0.76rem; color: #9aa1cc; flex-wrap: wrap; gap: 8px; }
.footer-bottom a { color: #9aa1cc; margin-left: 14px; }

@media (max-width: 960px) {
  .mega-nav { display: none; }
  .tier-row { grid-template-columns: 1fr; }
  .course-grid { grid-template-columns: repeat(2, 1fr); }
  .class-links { grid-template-columns: repeat(3, 1fr); margin-left: 0; }
  .subject-sub, .soon-panel, .class-grid-title, .vertical-grid { margin-left: 0; }
  .vertical-grid { grid-template-columns: repeat(3, 1fr); }
  .offer-grid { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .course-grid { grid-template-columns: 1fr; }
  .class-links { grid-template-columns: 1fr 1fr; }
  .vertical-grid { grid-template-columns: 1fr 1fr; }
  .contact-bar { flex-direction: column; align-items: flex-start; }
  .footer-cols { grid-template-columns: 1fr; }
}