/*
 * Layout shells shared across pages: sticky site header/nav, hero section,
 * and the logged-in "app shell" (sidebar + main) used for dashboard-style
 * pages. Ported from Landing.html's header/nav and APP SHELL sections.
 * The MasterStudy Student Dashboard has its own markup (styled via
 * masterstudy.css) — this app-shell is for any CUSTOM dashboard-style
 * template this theme adds later (see docs/AI-AGENT-GUIDE.md, growth paths).
 */

.ent-container {
  max-width: var(--ent-container);
  margin: 0 auto;
  padding: 0 28px;
}
.ent-container-narrow {
  max-width: var(--ent-container-narrow);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---- site header / nav ---- */
.ent-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--ent-bg) 82%, transparent);
  border-bottom: 1px solid var(--ent-line);
}
.ent-header-inner {
  max-width: var(--ent-container);
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.ent-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.ent-brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: var(--ent-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ent-accent-ink);
  font-family: var(--ent-font-head);
  font-weight: 600;
  font-size: 18px;
  flex-shrink: 0;
}
.ent-brand-name {
  font-family: var(--ent-font-head);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--ent-ink);
}
.ent-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.ent-nav a {
  font-size: 15px;
  color: var(--ent-ink-2);
  text-decoration: none;
}
.ent-nav a:hover {
  color: var(--ent-ink);
}

/* ---- hero ---- */
.ent-hero {
  max-width: var(--ent-container);
  margin: 0 auto;
  padding: 72px 28px 40px;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}
.ent-hero h1 {
  font-size: 56px;
  line-height: 1.04;
  letter-spacing: -.02em;
  margin-bottom: 20px;
}
.ent-hero p.ent-hero-lead {
  font-size: 19px;
  line-height: 1.6;
  color: var(--ent-ink-2);
  max-width: 480px;
  margin-bottom: 30px;
}
.ent-hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 26px;
  flex-wrap: wrap;
}
.ent-hero-fineprint {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
  color: var(--ent-ink-2);
  flex-wrap: wrap;
}
.ent-hero-fineprint .ent-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--ent-line);
}

@media (max-width: 900px) {
  .ent-hero {
    grid-template-columns: 1fr;
    padding-top: 40px;
  }
  .ent-hero h1 { font-size: 38px; }
}

/* ---- app shell (custom dashboard-style pages, if this theme grows one) ---- */
.ent-app-shell {
  display: grid;
  grid-template-columns: 248px 1fr;
  min-height: 100vh;
}
.ent-app-sidebar {
  border-right: 1px solid var(--ent-line);
  background: var(--ent-surface);
  display: flex;
  flex-direction: column;
  padding: 22px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.ent-app-sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 8px;
  margin-bottom: 26px;
  text-decoration: none;
}
.ent-app-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.ent-app-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border-radius: 11px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ent-ink-2);
  text-decoration: none;
}
.ent-app-nav-item:hover {
  background: var(--ent-surface-2);
  color: var(--ent-ink);
}
.ent-app-nav-item.is-active {
  background: var(--ent-accent-soft);
  color: var(--ent-accent);
}
.ent-app-main {
  min-width: 0;
  max-width: 1080px;
  margin: 0 auto;
  padding: 36px 40px 60px;
  width: 100%;
}

@media (max-width: 960px) {
  .ent-app-shell { grid-template-columns: 1fr; }
  .ent-app-sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--ent-line);
  }
  .ent-app-main { padding: 24px 20px 40px; }
}