/* app.css — base styles: chrome, drawer, tile grid, cards, inputs.
 * Per Feature Inventory §Design constraints. */

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-stack);
  font-size: var(--font-size-body);
  color: var(--color-app-bar-text);
  background: var(--color-page-bg);
  -webkit-tap-highlight-color: transparent;
}

/* App bar — white background, dark navy text/icons */
.app-bar {
  position: sticky;
  top: 0;
  z-index: var(--z-app-bar);
  height: var(--app-bar-height);
  background: var(--color-app-bar-bg);
  color: var(--color-app-bar-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-3);
  box-shadow: 0 1px 0 var(--color-divider);
}

.app-bar__title {
  font-size: var(--font-size-title);
  font-weight: var(--font-weight-semi);
  text-align: center;
  flex: 1;
}

.app-bar__icon {
  /* Reset default <button> chrome — the user-agent border + grey background
   * was making header icons look like boxed/framed buttons rather than
   * clean glyphs (TC21 visual flag 2026-05-19). */
  appearance: none;
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
  width: 24px;
  height: 24px;
  cursor: pointer;
  color: var(--color-app-bar-text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.app-bar__icon:focus-visible {
  /* Keep keyboard accessibility — visible focus ring only on keyboard nav */
  outline: 2px solid var(--color-action);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Tile grid — 4 cols, square tiles, dark teal gradient bg.
 * minmax(0, 1fr) is required (not plain 1fr): default track min-width is
 * auto/content-based, so a long unbreakable label like "Variant Inspection"
 * forces tracks wider than viewport/4 and pushes the right column off-screen
 * on narrow devices (TC21 ~360px portrait). */
.tile-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--tile-grid-gap);
  padding: var(--space-3);
}

.tile {
  aspect-ratio: 1;
  background: linear-gradient(135deg, var(--color-tile-bg-from), var(--color-tile-bg-to));
  border-radius: var(--card-radius);
  color: var(--color-tile-icon);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  text-decoration: none;
  position: relative;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.tile::after {
  /* OW signature diagonal shadow stripe at bottom-right */
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 30%;
  height: 30%;
  background: linear-gradient(135deg, transparent, rgba(0, 0, 0, 0.15));
  border-radius: 0 0 var(--card-radius) 0;
  pointer-events: none;
}

.tile__icon {
  width: var(--tile-icon-size);
  height: var(--tile-icon-size);
  margin-bottom: var(--space-2);
}

.tile__label {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-semi);
  color: var(--color-tile-icon);
  padding: 0 var(--space-1);
}

.tile--greyed {
  background: var(--color-greyed-tile);
}

.tile--greyed .tile__label {
  color: var(--color-greyed-label);
}

/* Cards (used inside flows) */
.card {
  background: #ffffff;
  border: 1px solid var(--color-divider);
  border-radius: var(--card-radius);
  padding: var(--space-4);
  margin-bottom: var(--space-3);
}

.card--active {
  border: 2px solid var(--color-active-step);
}

/* Inputs */
.input {
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--color-input-blurred);
  padding: var(--space-2) 0;
  font-family: inherit;
  font-size: var(--font-size-body);
  background: transparent;
  outline: none;
}

.input:focus {
  border-bottom-color: var(--color-action);
  border-bottom-width: 2px;
}

/* Buttons */
.btn {
  border: none;
  border-radius: var(--card-radius);
  padding: var(--space-3) var(--space-5);
  font-family: inherit;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semi);
  cursor: pointer;
}

.btn--primary {
  background: var(--color-action);
  color: #ffffff;
}

.btn--brand {
  /* S&G pink — used only on sign-in CTA per palette spec */
  background: var(--color-sg-pink);
  color: #ffffff;
}

.btn--brand:hover { background: var(--color-sg-pink-hover); }

/* Drawer */
.drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--drawer-width);
  background: linear-gradient(135deg, var(--color-drawer-bg-from), var(--color-drawer-bg-to));
  color: var(--color-drawer-text);
  z-index: var(--z-drawer);
  transform: translateX(-100%);
  transition: transform 0.25s ease;
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
}

.drawer--open { transform: translateX(0); }

.drawer__header-strip {
  /* S&G pink top strip — the brand differentiator */
  background: var(--color-sg-pink-tint);
  margin: calc(var(--space-4) * -1) calc(var(--space-4) * -1) var(--space-4);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
}

.drawer__user {
  color: var(--color-sg-pink);  /* operator name in S&G pink — brand identity cue */
  font-weight: var(--font-weight-semi);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.drawer__online-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-online-dot);
}

.drawer__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  cursor: pointer;
  color: var(--color-drawer-text);
}

.drawer__local-badge {
  margin-left: auto;
  background: var(--color-drawer-text);
  color: var(--color-drawer-bg-from);
  border-radius: 999px;
  padding: 2px 8px;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-semi);
}

.drawer__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: calc(var(--z-drawer) - 1);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.drawer__overlay--visible {
  opacity: 1;
  pointer-events: auto;
}

/* Sign-in screen — uses S&G pink CTA */
.sign-in {
  min-height: calc(100vh - var(--app-bar-height));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  gap: var(--space-4);
}

.sign-in__logo {
  color: var(--color-sg-pink);
  font-size: 32px;
  font-weight: var(--font-weight-semi);
  margin-bottom: var(--space-6);
}

.sign-in__form {
  width: 100%;
  max-width: 320px;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Page-indicator dots */
.page-dots {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3);
}

.page-dots__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-greyed-tile);
}

.page-dots__dot--active {
  background: var(--color-action);
}

/* Status badges (list rows etc) */
.status-partial {
  background: var(--color-state-warn);
  color: #ffffff;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: var(--font-size-small);
}