/* ==========================================================================
   Layout: marketing chrome + portal shell
   ========================================================================== */

/* --- Site header --------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  background: color-mix(in srgb, var(--bg-raised) 88%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  height: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  flex: none;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-md);
  letter-spacing: var(--tracking-tight);
}
.brand:hover { color: var(--text); }
.brand__mark {
  display: grid;
  place-items: center;
  width: 32px; height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
  color: #fff;
  box-shadow: 0 2px 8px rgba(29, 71, 217, 0.32);
}
.brand__mark svg { width: 18px; height: 18px; }
.brand__sub {
  display: block;
  font-family: var(--font-sans);
  font-size: var(--text-2xs);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  line-height: 1;
  margin-top: 2px;
}

.site-nav { display: flex; align-items: center; gap: var(--space-1); }
.site-nav__link {
  position: relative;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 550;
  transition: color var(--duration-fast) var(--ease-out), background var(--duration-fast) var(--ease-out);
}
.site-nav__link:hover { color: var(--text); background: var(--bg-sunken); }
.site-nav__link.is-active { color: var(--text-brand); }

/* Dropdown mega menu */
.site-nav__group { position: relative; }
.site-nav__trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  border: none;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
}
.site-nav__trigger svg { width: 14px; height: 14px; transition: transform var(--duration-fast) var(--ease-out); }
.site-nav__group.is-open .site-nav__trigger svg { transform: rotate(180deg); }
.site-nav__panel {
  position: absolute;
  left: 50%;
  top: calc(100% + 10px);
  transform: translateX(-50%);
  width: min(620px, calc(100vw - 3rem));
  padding: var(--space-4);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  display: none;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
}
.site-nav__group.is-open .site-nav__panel { display: grid; animation: fade-in var(--duration-fast) var(--ease-out); }
.nav-card {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  color: var(--text);
  transition: background var(--duration-fast) var(--ease-out);
}
.nav-card:hover { background: var(--bg-sunken); color: var(--text); }
.nav-card__icon {
  display: grid; place-items: center;
  width: 34px; height: 34px;
  flex: none;
  border-radius: var(--radius-sm);
  background: var(--bg-brand-soft);
  color: var(--text-brand);
}
.nav-card__icon svg { width: 17px; height: 17px; }
.nav-card strong { display: block; font-size: var(--text-sm); font-weight: 650; }
.nav-card span { display: block; font-size: var(--text-xs); color: var(--text-muted); line-height: var(--leading-snug); margin-top: 2px; }

.header-actions { display: flex; align-items: center; gap: var(--space-2); margin-left: auto; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-raised);
  color: var(--text-secondary);
  cursor: pointer;
}

.theme-toggle {
  display: grid;
  place-items: center;
  width: 36px; height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
}
.theme-toggle:hover { color: var(--text); border-color: var(--border-strong); }
.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
}

@media (max-width: 1024px) {
  .site-nav {
    position: fixed;
    inset: var(--header-height) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4);
    background: var(--bg-raised);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
    display: none;
  }
  .site-nav.is-open { display: flex; }
  .site-nav__link { padding: var(--space-3); font-size: var(--text-base); }
  .site-nav__panel {
    position: static;
    transform: none;
    width: 100%;
    box-shadow: none;
    border: none;
    padding: 0 0 var(--space-2) var(--space-3);
    grid-template-columns: 1fr;
  }
  .nav-toggle { display: grid; }
  .header-actions .btn--desktop { display: none; }
}

/* --- Footer -------------------------------------------------------------- */

.site-footer {
  margin-top: auto;
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
  background: var(--bg-raised);
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(4, 1fr);
  gap: var(--space-8);
}
.footer-col h4 {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}
.footer-col ul { list-style: none; padding: 0; display: grid; gap: var(--space-2); }
.footer-col a { color: var(--text-secondary); font-size: var(--text-sm); }
.footer-col a:hover { color: var(--text-brand); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
  font-size: var(--text-xs);
  color: var(--text-muted);
}
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-col:first-child { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* --- Page shell ---------------------------------------------------------- */

.page { display: flex; flex-direction: column; min-height: 100vh; }
.page__main { flex: 1 1 auto; }

/* --- Portal shell -------------------------------------------------------- */

.portal { display: flex; min-height: 100vh; background: var(--bg); }

.portal-sidebar {
  position: sticky;
  top: 0;
  z-index: var(--z-sidebar);
  width: var(--sidebar-width);
  flex: none;
  height: 100vh;
  display: flex;
  flex-direction: column;
  padding: var(--space-5) var(--space-4);
  background: var(--bg-raised);
  border-right: 1px solid var(--border);
  transition: transform var(--duration) var(--ease-out);
}
.portal-sidebar__brand {
  flex: none;
  margin-bottom: var(--space-6);
  padding-inline: var(--space-2);
}

/* The nav scrolls; the brand and footer stay pinned. `min-height: 0` is what
   actually allows a flex child to shrink below its content and scroll - without
   it the operator nav overflows the viewport and the footer becomes unreachable. */
.portal-nav {
  display: grid;
  gap: var(--space-1);
  align-content: start;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  margin-inline: calc(-1 * var(--space-1));
  padding-inline: var(--space-1);
}
.portal-nav::-webkit-scrollbar { width: 6px; }
.portal-nav::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-pill);
}
.portal-nav::-webkit-scrollbar-track { background: transparent; }
.portal-nav__group + .portal-nav__group { margin-top: var(--space-5); }
.portal-nav__label {
  padding: 0 var(--space-3) var(--space-2);
  font-size: var(--text-2xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.portal-nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 550;
  transition: background var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out);
}
.portal-nav__link svg { width: 17px; height: 17px; flex: none; opacity: 0.75; }
.portal-nav__link:hover { background: var(--bg-sunken); color: var(--text); }
.portal-nav__link.is-active {
  background: var(--bg-brand-soft);
  color: var(--text-brand);
  font-weight: 650;
}
.portal-nav__link.is-active svg { opacity: 1; }
.portal-nav__count {
  margin-left: auto;
  font-size: var(--text-2xs);
  font-weight: 700;
  padding: 1px 7px;
  border-radius: var(--radius-pill);
  background: var(--bg-sunken);
  color: var(--text-muted);
}
.portal-sidebar__foot {
  flex: none;
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

.portal-main { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; }

.portal-topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  height: var(--header-height);
  padding-inline: clamp(var(--space-4), 3vw, var(--space-8));
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.portal-topbar h1 { font-size: var(--text-lg); margin: 0; }
.portal-topbar__sub { font-size: var(--text-xs); color: var(--text-muted); margin-top: 1px; }

.portal-content {
  flex: 1 1 auto;
  padding: clamp(var(--space-5), 3vw, var(--space-8));
  padding-bottom: var(--space-16);
}

.sidebar-toggle { display: none; }
.portal-scrim { display: none; }

@media (max-width: 1024px) {
  .portal-sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    transform: translateX(-100%);
    box-shadow: var(--shadow-xl);
  }
  .portal.is-nav-open .portal-sidebar { transform: translateX(0); }
  .portal.is-nav-open .portal-scrim {
    display: block;
    position: fixed;
    inset: 0;
    z-index: var(--z-scrim);
    background: rgba(11, 17, 29, 0.5);
  }
  .sidebar-toggle {
    display: grid;
    place-items: center;
    width: 38px; height: 38px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-raised);
    color: var(--text-secondary);
    cursor: pointer;
  }
}

/* --- Page header inside portal ------------------------------------------- */

.page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-5);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}
.page-head h2 { font-size: var(--text-2xl); }
.page-head p { color: var(--text-secondary); font-size: var(--text-sm); margin-top: var(--space-2); max-width: 62ch; }
.page-head__actions { display: flex; gap: var(--space-2); flex-wrap: wrap; }

/* --- Filter bar ---------------------------------------------------------- */

.filter-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding: var(--space-4);
  margin-bottom: var(--space-5);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.filter-bar .input, .filter-bar .select { min-height: 38px; font-size: var(--text-sm); }
.filter-bar__search { flex: 1 1 240px; min-width: 200px; position: relative; }
.filter-bar__search .input { padding-left: 2.35rem; }
.filter-bar__search svg {
  position: absolute;
  left: 0.75rem; top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  color: var(--text-muted);
  pointer-events: none;
}

/* --- Breadcrumbs --------------------------------------------------------- */

.crumbs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.crumbs a { color: var(--text-muted); }
.crumbs a:hover { color: var(--text-brand); }
.crumbs__sep { opacity: 0.5; }