.layout {
  min-height: 100vh;
  background: var(--surface-0);
}

.header {
  background: color-mix(in srgb, var(--surface-0) 82%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  height: 54px;
}

.logo {
  font-size: 0.92rem;
  font-weight: 680;
  color: var(--text-primary);
  text-decoration: none;
  white-space: nowrap;
}

.nav {
  display: flex;
  gap: 0.15rem;
  flex: 1;
}

.nav-link {
  padding: 0.38rem 0.7rem;
  border-radius: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.86rem;
  white-space: nowrap;
  transition: background 0.15s var(--ease), color 0.15s var(--ease);
}

.nav-link:hover {
  background: var(--surface-1);
  color: var(--text-primary);
}

.nav-link.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
}

/* Icon shortcuts only appear once the text nav collapses. */
.header-secondary {
  display: none;
  gap: 0.1rem;
}

.icon-link {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 1rem;
  transition: background 0.15s var(--ease), color 0.15s var(--ease);
}

.icon-link:hover,
.icon-link.active {
  background: var(--accent-soft);
  color: var(--accent);
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 8px;
  padding: 0.3rem 0.6rem;
  font-size: 0.74rem;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
  transition: border-color 0.15s var(--ease), color 0.15s var(--ease);
}

.theme-toggle:hover {
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.content {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 4rem;
}

/* Bottom tab bar ----------------------------------------------------------- */
.tabbar {
  display: none;
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  /* Clears the iOS home indicator rather than sitting under it. */
  bottom: calc(0.6rem + env(safe-area-inset-bottom, 0px));
  z-index: 30;
  gap: 0.15rem;
  padding: 0.3rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface-2) 88%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid var(--border);
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.28);
}

.tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1rem;
  /* Comfortably past the 44px touch-target minimum. */
  min-width: 60px;
  padding: 0.42rem 0.5rem;
  border-radius: 999px;
  text-decoration: none;
  color: var(--text-muted);
  transition: color 0.18s var(--ease), background 0.18s var(--ease);
}

.tab-icon {
  font-size: 1.05rem;
  line-height: 1;
}

.tab-label {
  font-size: 0.66rem;
  font-weight: 550;
}

.tab.active {
  background: var(--accent-soft);
  color: var(--accent);
}

.tab:active {
  transform: scale(0.94);
}

@media (max-width: 860px) {
  .nav { display: none; }
  .header-secondary { display: flex; }
  .tabbar { display: flex; }
  .header-inner { padding: 0 0.9rem; gap: 0.5rem; }
  .logo { font-size: 0.85rem; }
  /* Room for the floating bar so the last card is never trapped under it. */
  .content { padding: 1.1rem 0.9rem calc(5.5rem + env(safe-area-inset-bottom, 0px)); }
}

@media (prefers-reduced-motion: reduce) {
  .nav-link, .icon-link, .tab, .theme-toggle { transition: none; }
  .tab:active { transform: none; }
}