/* Reset, typography, page layouts. */

*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Author display rules (.btn, .field, …) outrank the UA sheet's
   [hidden] rule - force it back so `hidden` always wins. */
[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font: var(--type-body-large);
  color: var(--color-on-surface);
  background: var(--color-surface);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p {
  margin: 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button {
  font: inherit;
}

/* ---------- Auth screens (plain layout) ---------- */

.auth-screen {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  background:
    radial-gradient(circle at 20% 10%, var(--color-primary-container) 0, transparent 45%),
    radial-gradient(circle at 85% 90%, var(--color-secondary-container) 0, transparent 40%),
    var(--color-surface);
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--color-surface-container-low);
  border-radius: var(--shape-l);
  box-shadow: var(--elevation-2);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.auth-brand {
  font: var(--type-headline-small);
  color: var(--color-primary);
  text-align: center;
}

.auth-subtitle {
  font: var(--type-body-medium);
  color: var(--color-on-surface-variant);
  text-align: center;
  margin-top: -8px;
}

.auth-footer {
  font: var(--type-body-medium);
  color: var(--color-on-surface-variant);
  text-align: center;
}

.auth-theme-toggle {
  position: fixed;
  top: 12px;
  right: 12px;
}

/* ---------- App shell ---------- */

.shell {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.top-app-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 12px;
  height: 64px;
  padding: 0 16px;
  background: var(--color-surface-container);
  box-shadow: var(--elevation-1);
}

.top-app-bar .app-title {
  font: var(--type-title-large, var(--type-title-medium));
  font-size: 1.25rem;
  font-weight: 500;
  flex: 1;
  color: var(--color-on-surface);
}

.shell-body {
  flex: 1;
  display: flex;
  min-height: 0;
}

/* Nav: rail on wide screens, bottom bar on narrow */

.nav-rail {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 96px;
  padding: 12px 8px;
  background: var(--color-surface-container-low);
  border-right: 1px solid var(--color-outline-variant);
}

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  height: 72px;
  background: var(--color-surface-container);
  box-shadow: 0 -1px 3px rgba(0, 0, 0, 0.12);
}

.bottom-nav .nav-item {
  flex: 1;
  min-width: 0;
}

.nav-item {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--color-on-surface-variant);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font: var(--type-label-medium);
  padding: 0;
  text-decoration: none;
  position: relative;
}

.nav-item:hover {
  text-decoration: none;
}

.nav-rail .nav-item {
  border-radius: var(--shape-full);
  padding: 12px 4px;
}

.nav-item .nav-icon {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
}

.nav-item .nav-label {
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-item .nav-pill {
  position: absolute;
  top: 6px;
  width: 56px;
  height: 32px;
  border-radius: var(--shape-full);
  background: transparent;
  z-index: -1;
  transition: background var(--duration-short) var(--motion-standard);
}

.nav-item.active {
  color: var(--color-on-surface);
}

.nav-item.active .nav-pill {
  background: var(--color-secondary-container);
}

.nav-item.active .nav-icon {
  color: var(--color-on-secondary-container);
}

.main-content {
  flex: 1;
  min-width: 0;
  padding: 24px 16px 96px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
  width: 100%;
}

@media (min-width: 900px) {
  .nav-rail {
    display: flex;
  }

  .bottom-nav {
    display: none;
  }

  .main-content {
    padding: 32px 32px 48px;
  }
}

/* ---------- Misc layout helpers ---------- */

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.page-title {
  font: var(--type-headline-small);
  color: var(--color-on-surface);
}

.page-subtitle {
  font: var(--type-body-medium);
  color: var(--color-on-surface-variant);
}

.form-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.form-row > * {
  flex: 1;
  min-width: 200px;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.row.end {
  justify-content: flex-end;
}

.row.between {
  justify-content: space-between;
}

.muted {
  color: var(--color-on-surface-variant);
  font: var(--type-body-medium);
}

.dl-profile {
  display: grid;
  grid-template-columns: minmax(120px, max-content) 1fr;
  gap: 8px 16px;
  margin: 0;
}

.dl-profile dt {
  font: var(--type-label-large);
  color: var(--color-on-surface-variant);
}

.dl-profile dd {
  margin: 0;
  font: var(--type-body-large);
}

/* Offline banner */

.offline-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--color-error-container);
  color: var(--color-on-error-container);
  font: var(--type-label-large);
  text-align: center;
  padding: 8px 16px;
}