/* Page-level layout: containers, grids, site header/footer, app shell, visitor shell. */

.container {
  width: 100%;
  max-width: calc(var(--container-max) + 2 * var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container-narrow {
  max-width: calc(var(--container-narrow) + 2 * var(--gutter));
}

.section {
  padding-block: var(--section-y);
}

.section-alt {
  background: var(--color-bg-subtle);
  border-block: 1px solid var(--color-border);
}

.section-head {
  max-width: 40rem;
  margin-bottom: var(--space-12);
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.section-head > * + * {
  margin-top: var(--space-3);
}

.grid {
  display: grid;
  gap: var(--grid-gap, var(--space-6));
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--grid-min, 16rem)), 1fr));
}

.grid-2 { --grid-min: 22rem; }
.grid-3 { --grid-min: 18rem; }
.grid-4 { --grid-min: 12rem; }

.split {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 60rem) {
  .split { grid-template-columns: 1.05fr 1fr; }
  .split.reverse > :first-child { order: 2; }
}

/* ============ Site header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  height: var(--header-h);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-base) var(--ease-out);
}

/* The frosted background sits on a pseudo-element: a backdrop-filter on the
   header itself would make it the containing block of the fixed-position
   mobile menu, squeezing the menu into the header's 64px (transparent and
   untappable on phones). */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
}

.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: var(--weight-bold);
  font-size: var(--text-lg);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
  text-decoration: none;
}

.brand:hover { color: var(--color-text); }

.brand-mark {
  width: 2rem;
  height: 2rem;
  flex: none;
}

.site-nav {
  display: none;
  margin-inline-start: auto;
  gap: var(--space-1);
}

.site-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-text);
  background: var(--color-surface-sunken);
}

.site-actions {
  display: none;
  gap: var(--space-2);
  align-items: center;
}

.nav-toggle {
  margin-inline-start: auto;
}

.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  background: var(--color-bg);
  padding: var(--space-6) var(--gutter);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  z-index: var(--z-header);
  border-top: 1px solid var(--color-border);
  overflow-y: auto; /* short screens: everything stays reachable */
  overscroll-behavior: contain;
}

.mobile-nav a:not(.btn) {
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav .btn { margin-top: var(--space-4); }
.mobile-nav .mobile-theme .btn { margin-top: 0; }

@media (min-width: 52rem) {
  .site-nav,
  .site-actions { display: flex; }
  .site-nav { margin-inline-start: var(--space-6); margin-inline-end: auto; }
  .nav-toggle,
  .mobile-nav { display: none !important; }
}

/* ============ Site footer ============ */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-subtle);
  padding-block: var(--space-16) var(--space-10);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.footer-grid {
  display: grid;
  gap: var(--space-10);
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
}

.footer-grid h4 {
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.footer-grid ul {
  list-style: none;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.footer-grid a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer-grid a:hover { color: var(--color-text); }

.footer-bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
}

/* ============ Owner app shell ============
   Mobile: top bar + content + bottom tab bar.
   Desktop (≥ 64rem): fixed sidebar + content. */
.app {
  min-height: 100dvh;
  display: grid;
  grid-template-rows: var(--header-h) 1fr;
  /* minmax(0, …): the main column must not grow to fit wide content (a table
     scrolls inside its .table-wrap instead of widening the page). */
  grid-template-columns: minmax(0, 1fr);
}

.app-sidebar {
  display: none;
}

.app-topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-inline: var(--gutter);
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.app-topbar .topbar-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
}

.app-topbar .topbar-actions {
  margin-inline-start: auto;
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

.app-main {
  padding: var(--space-6) var(--gutter) calc(var(--tabbar-h) + var(--space-10) + env(safe-area-inset-bottom));
  max-width: 64rem;
  width: 100%;
  margin-inline: auto;
}

.app-tabbar {
  position: fixed;
  inset: auto 0 0 0;
  z-index: var(--z-tabbar);
  height: calc(var(--tabbar-h) + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, 1fr); /* equal tabs, whatever the label length */
  background: color-mix(in srgb, var(--color-surface) 92%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-border);
}

.app-tabbar a {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 0.6875rem;
  font-weight: var(--weight-medium);
  color: var(--color-text-subtle);
  text-decoration: none;
}

.app-tabbar a .icon { width: 1.5rem; height: 1.5rem; }
/* Long labels (Polish, German…) wrap onto at most two short lines. */
.app-tabbar a > span:not(.count) {
  max-width: 100%;
  padding-inline: 2px;
  text-align: center;
  line-height: 1.15;
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  overflow: hidden;
}

.app-tabbar a[aria-current="page"] {
  color: var(--color-accent);
}

.app-tabbar .badge-dot {
  position: absolute;
  top: 0.6rem;
  inset-inline-start: calc(50% + 0.45rem);
}

.sidebar-nav {
  display: grid;
  gap: var(--space-0-5);
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  text-decoration: none;
}

.sidebar-nav a:hover {
  background: var(--color-surface-sunken);
  color: var(--color-text);
}

.sidebar-nav a[aria-current="page"] {
  background: var(--color-accent-soft);
  color: var(--color-accent-soft-text);
}

.sidebar-nav .count {
  margin-inline-start: auto;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  min-width: 0;
}

.sidebar-user-text { display: grid; min-width: 0; }
.sidebar-email { font-size: var(--text-sm); font-weight: var(--weight-medium); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.app-sidebar .sidebar-foot { padding-top: var(--space-4); border-top: 1px solid var(--color-border); }
.app-sidebar .sidebar-foot .cluster { justify-content: space-between; padding-inline: var(--space-1); }

.sidebar-label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-subtle);
  padding: var(--space-5) var(--space-3) var(--space-2);
}

@media (min-width: 64rem) {
  .app {
    grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
    grid-template-rows: var(--header-h) 1fr;
  }
  .app-sidebar {
    grid-row: 1 / -1;
    position: sticky;
    top: 0;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-3);
    border-inline-end: 1px solid var(--color-border);
    background: var(--color-bg-subtle);
  }
  .app-sidebar .brand { padding: var(--space-2) var(--space-3) var(--space-4); }
  .app-sidebar .sidebar-foot { margin-top: auto; }
  .app-topbar .topbar-brand { display: none; }
  .app-topbar .topbar-title { visibility: hidden; } /* the page heading shows it on desktop */
  .app-tabbar { display: none; }
  .app-main { padding: var(--space-8) var(--space-10) var(--space-16); }
}

.page-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.page-head .page-title { font-size: var(--text-2xl); }
.page-head .page-sub { color: var(--color-text-muted); margin-top: var(--space-1); }
.page-head .page-actions { margin-inline-start: auto; display: flex; gap: var(--space-2); }

/* A heading between groups on an app page (e.g. "Shared with you"). */
.app-section-title { font-size: var(--text-lg); margin-block: var(--space-10) var(--space-4); }

/* ============ Visitor shell (/t/, /c/) ============ */
.visitor {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--gradient-hero), var(--color-bg);
}

.visitor-top {
  display: flex;
  justify-content: flex-end;
  width: 100%;
  max-width: 28rem;
  margin-inline: auto;
  padding: var(--space-3) var(--space-4) 0;
}

.visitor-main {
  flex: 1;
  width: 100%;
  max-width: 28rem;
  margin-inline: auto;
  padding: var(--space-4) var(--space-4) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.visitor-foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-2) var(--space-4);
  text-align: center;
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
  padding: var(--space-6) var(--space-4) calc(var(--space-6) + env(safe-area-inset-bottom));
}

.visitor-foot a { color: inherit; }