/* public/css/styles.css
 *
 * Leible brand pass — Phase 5 (Lei-Bible SOP App).
 * Tablet-first, structural layout is unchanged from the functional build;
 * this pass re-skins via the CSS variables below (palette, radii, shadow,
 * font) plus a glass-card treatment on cards/rows/overlays, per
 * leible_style_reference.md (cream #F5F4EE / deep green #233022 / sage
 * #a5b89d, Outfit font, glass-card components).
 *
 * "Tablet-first" here means: the base rules below target a shared wall
 * tablet (~768-1024px landscape). A max-width query narrows things down
 * for a phone fallback; nothing is designed desktop-first-then-shrunk.
 *
 * Touch targets: every interactive element is >=48px; numpad keys are
 * 64px; checklist rows are >=56px tall. These minimums are UNCHANGED by
 * the brand pass — only paint (colour/radius/shadow/font) moved.
 *
 * Every class name below is a JS DOM hook (app.js creates elements with
 * these exact class strings) — selectors are preserved as-is; only their
 * declarations changed.
 */

:root {
  /* ---- Leible brand palette ---- */
  --color-bg: #f5f4ee;              /* cream */
  --color-surface: #ffffff;          /* glass-card white */
  --color-surface-alt: #eef1ea;      /* light sage-tinted panel: sticky headers, pressed/alt rows */
  --color-border: #e3e7de;           /* soft sage-tinted border */
  --color-text: #233022;             /* deep green ink */
  --color-text-muted: #5b6555;       /* darkened sage-grey — AA-safe (6.1:1) on cream/white for body text */
  --color-accent: #a5b89d;           /* sage — decorative accents, dividers, icons (non-text) */
  --color-accent-soft: rgba(165, 184, 157, 0.18);
  --color-primary: #233022;          /* deep green — primary CTA / active state fill */
  --color-primary-contrast: #f5f4ee; /* cream text on deep-green fill (13.3:1) */
  --color-accent-contrast: #233022;  /* deep-green text on sage fill (7.1:1) */
  --color-danger: #b3261e;           /* AA-safe (6.0:1) on cream/white — used sparingly (PIN error) */
  --color-focus: #233022;            /* deep-green focus ring, high-visibility on cream */

  /* ---- spacing scale ---- */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;

  /* ---- sizing (do not shrink — kiosk touch-target floor) ---- */
  --touch-min: 48px;
  --numpad-key: 64px;
  --checklist-row-min: 56px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  /* ---- elevation / glass ---- */
  --shadow-card: 0 4px 15px rgba(35, 48, 34, 0.08);
  --shadow-dock: 0 10px 30px rgba(35, 48, 34, 0.12);
  --blur-glass: saturate(180%) blur(14px);

  /* ---- motion ---- */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;

  /* ---- type ---- */
  --font-base: 'Outfit', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-size-base: 18px;
  --font-size-lg: 22px;
  --font-size-xl: 28px;
  --font-size-sm: 15px;

  --header-height: 64px;
  --z-sticky: 10;
  --z-overlay: 100;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-tap-highlight-color: transparent;
}

button {
  font-family: inherit;
}

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

button,
input {
  font-size: inherit;
}

/* ---- accessible focus ring (keyboard users) ---- */

a:focus-visible,
button:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius);
}

/* ---- respect reduced-motion preference ---- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---- app shell ---- */

#app {
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

.screen {
  flex: 1;
  display: none;
  flex-direction: column;
  min-height: 100%;
}

.screen.is-active {
  display: flex;
}

.hidden {
  display: none !important;
}

/* ---- generic sticky header bar (glass, clean group divider) ---- */

.app-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: var(--header-height);
  padding: var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.88);
  -webkit-backdrop-filter: var(--blur-glass);
  backdrop-filter: var(--blur-glass);
  border-bottom: 1px solid var(--color-border);
}

.app-header__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  flex: 1;
  color: var(--color-text);
}

.icon-btn {
  min-width: var(--touch-min);
  min-height: var(--touch-min);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.icon-btn:hover {
  background: var(--color-surface-alt);
}

.icon-btn:active {
  transform: scale(0.96);
  background: var(--color-accent-soft);
}

.back-btn {
  font-size: var(--font-size-lg);
  font-variant-emoji: text;
}

/* ================= PIN screen ================= */

#screen-pin {
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  padding: var(--space-5);
}

.pin-panel {
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-6) var(--space-5);
}

.pin-title {
  font-size: var(--font-size-xl);
  font-weight: 800;
  text-align: center;
  color: var(--color-text);
}

.pin-dots {
  display: flex;
  gap: var(--space-3);
  min-height: 20px;
}

.pin-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--color-accent);
  background: transparent;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.pin-dot.is-filled {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.pin-error {
  color: var(--color-danger);
  min-height: 1.5em;
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-align: center;
}

.numpad {
  display: grid;
  grid-template-columns: repeat(3, var(--numpad-key));
  gap: var(--space-3);
}

.numpad-key {
  width: var(--numpad-key);
  height: var(--numpad-key);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.numpad-key:active {
  background: var(--color-accent-soft);
  transform: scale(0.96);
}

.numpad-key--action {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-muted);
}

.pin-submit-btn {
  width: 100%;
  min-height: var(--touch-min);
  border-radius: var(--radius-pill);
  border: none;
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  font-size: var(--font-size-lg);
  font-weight: 800;
  cursor: pointer;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.pin-submit-btn:active {
  opacity: 0.9;
  transform: scale(0.98);
}

/* ================= Home screen ================= */

.site-chips,
.filter-chips {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  overflow-x: auto;
}

.chip {
  min-height: var(--touch-min);
  padding: 0 var(--space-4);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  cursor: pointer;
  font-size: var(--font-size-base);
  font-weight: 600;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.chip.is-active {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  border-color: var(--color-accent);
}

.search-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 var(--space-4) var(--space-4);
  padding: var(--space-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.search-bar__input {
  flex: 1;
  min-height: var(--touch-min);
  border: none;
  background: transparent;
  padding: 0 var(--space-2);
  outline: none;
  color: var(--color-text);
  font-family: var(--font-base);
}

.search-bar__input::placeholder {
  color: var(--color-text-muted);
}

.mic-btn {
  min-width: var(--touch-min);
  min-height: var(--touch-min);
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  font-variant-emoji: text;
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.mic-btn.is-listening {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  transform: scale(1.05);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-4);
  padding: 0 var(--space-4) var(--space-6);
}

.category-card {
  min-height: 96px;
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  display: flex;
  align-items: center;
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  text-align: left;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.category-card:hover {
  box-shadow: var(--shadow-dock);
}

.category-card:active {
  background: var(--color-accent-soft);
  transform: scale(0.98);
}

.empty-state {
  padding: var(--space-6) var(--space-4);
  text-align: center;
  color: var(--color-text-muted);
}

/* ================= Category / list screens ================= */

.sop-list {
  list-style: none;
  margin: 0;
  padding: var(--space-3) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.sop-list-item {
  min-height: var(--touch-min);
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.sop-list-item:active {
  background: var(--color-accent-soft);
  transform: scale(0.99);
}

.sop-list-item__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
}

.sop-list-item__meta {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.meta-chip {
  font-size: var(--font-size-sm);
  font-weight: 600;
  padding: 3px var(--space-3);
  border-radius: var(--radius-pill);
  background: var(--color-surface-alt);
  color: var(--color-text-muted);
}

/* ================= SOP detail / checklist ================= */

.checklist {
  list-style: none;
  margin: 0;
  padding: 0 0 var(--space-6);
}

.checklist-section {
  position: sticky;
  top: var(--header-height);
  z-index: var(--z-sticky);
  padding: var(--space-3) var(--space-4) var(--space-2);
  background: rgba(238, 241, 234, 0.92);
  -webkit-backdrop-filter: var(--blur-glass);
  backdrop-filter: var(--blur-glass);
  border-bottom: 2px solid var(--color-accent);
  font-weight: 800;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-contrast);
}

.checklist-row {
  min-height: var(--checklist-row-min);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

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

.checklist-row__box {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  margin-top: 2px;
  border-radius: 8px;
  border: 2px solid var(--color-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: transparent;
  background: var(--color-surface);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.checklist-row.is-checked .checklist-row__box {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-contrast);
}

.checklist-row.is-checked .checklist-row__text {
  text-decoration: line-through;
  color: var(--color-text-muted);
}

.checklist-row__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.checklist-row__text {
  color: var(--color-text);
  font-weight: 600;
}

.checklist-row__detail {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ================= Search overlay ================= */

/* Overlay paint is gated on the active state — the `.search-overlay` class
 * is present on the <section> unconditionally (a JS hook), so an ungated
 * rule here would out-cascade `.screen { display:none }` (equal specificity,
 * declared later) and pin the overlay over every screen on load. Scoping to
 * `.is-active` keeps it hidden until the search route is active. */
.search-overlay.is-active {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
}

.search-results {
  list-style: none;
  margin: 0;
  padding: var(--space-3) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  overflow-y: auto;
}

.search-result {
  min-height: var(--touch-min);
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.search-result:active {
  background: var(--color-accent-soft);
  transform: scale(0.99);
}

.search-result__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
}

.search-result__context {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.voice-transcript {
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-muted);
  font-style: italic;
  min-height: 1.5em;
}

/* ================= phone fallback ================= */

@media (max-width: 599px) {
  :root {
    --font-size-base: 16px;
    --font-size-lg: 19px;
    --font-size-xl: 24px;
  }

  .category-grid {
    grid-template-columns: 1fr;
  }

  .numpad {
    grid-template-columns: repeat(3, var(--numpad-key));
  }
}