/* ─── Fonts ──────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* ─── Design tokens ──────────────────────────────────────────────── */
:root {
  --blue:        #2B57C7;
  --blue-dark:   #1A3A8F;
  --blue-tint:   #EEF2FD;
  --blue-mid:    #7BA9FF;
  --navy:        #0D1526;
  --grey-dark:   #3D4663;
  --grey:        #6E7A99;
  --grey-light:  #A8B0C8;
  --border:      #E4E8F2;
  --bg:          #F5F7FB;
  --white:       #FFFFFF;
  --green:       #16A566;
  --green-tint:  #E8F8F1;
  --red:         #E53935;

  --r-sm:  8px;
  --r-md:  14px;
  --r-lg:  20px;
  --r-xl:  28px;

  --shadow-sm: 0 1px 4px rgba(13,21,38,0.06);
  --shadow-md: 0 4px 16px rgba(13,21,38,0.10);
  --shadow-lg: 0 12px 40px rgba(13,21,38,0.16);

  --font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* ─── Reset ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  height: 100%;
  /* Prevent font size inflation on orientation change */
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--navy);
  min-height: 100%;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: none;
  padding-bottom: env(safe-area-inset-bottom);
}

a    { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

/* ─── Top bar ────────────────────────────────────────────────────── */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 0 20px;
  padding-top: max(16px, env(safe-area-inset-top));
  padding-bottom: 14px;
  background: rgba(245,247,251,0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.top-bar-logo {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--blue);
}

.top-bar-floor {
  font-size: 12px;
  font-weight: 600;
  color: var(--grey);
  background: var(--border);
  padding: 4px 10px;
  border-radius: 999px;
}

/* ─── Hero ───────────────────────────────────────────────────────── */
.hero {
  padding: 24px 20px 6px;
}

.hero-heading {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.1;
  color: var(--navy);
}

.hero-sub {
  margin-top: 6px;
  font-size: 14px;
  color: var(--grey);
  line-height: 1.5;
}

/* ─── Search ─────────────────────────────────────────────────────── */
.search-wrap {
  padding: 16px 20px 12px;
  position: relative;
}

.search-icon {
  position: absolute;
  left: 34px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--grey);
  pointer-events: none;
}

.search-input {
  width: 100%;
  height: 46px;
  padding: 0 16px 0 42px;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 500;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  color: var(--navy);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  -webkit-appearance: none;
  appearance: none;
}

.search-input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(43,87,199,0.12);
}

.search-input::placeholder { color: var(--grey-light); }

/* ─── Category pills — 3×2 grid, all visible at once ────────────── */
.categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 7px;
  padding: 0 20px 16px;
}

.category-pill {
  height: 34px;
  padding: 0 6px;
  font-family: var(--font);
  font-size: clamp(11.5px, 3.2vw, 13px);
  font-weight: 600;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--white);
  color: var(--grey-dark);
  transition: all 0.15s;
  -webkit-tap-highlight-color: transparent;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.category-pill.active {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--white);
}

/* ─── Section label ──────────────────────────────────────────────── */
.list-label {
  padding: 0 20px 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--grey);
}

/* ─── Destination list ───────────────────────────────────────────── */
.dest-list {
  margin: 0 16px;
  background: var(--white);
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.dest-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  cursor: pointer;
  transition: background 0.12s;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  min-height: 64px;
}

.dest-item:not(:last-child)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 60px;
  right: 0;
  height: 1px;
  background: var(--border);
}

.dest-item:active { background: var(--bg); }

.dest-item-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  flex-shrink: 0;
}

.dest-item-icon.amenity   { background: #E8EDFC; }
.dest-item-icon.classroom { background: #FFF3E0; }
.dest-item-icon.washroom  { background: #E8F5E9; }
.dest-item-icon.exit      { background: #FDECEA; }
.dest-item-icon.access    { background: #EDE7F6; }

.dest-item-info {
  flex: 1;
  min-width: 0;
}

.dest-item-name {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--navy);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dest-item-sub {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  font-weight: 500;
  color: var(--grey);
}

.dest-item-chevron {
  color: var(--grey-light);
  font-size: 18px;
  font-weight: 300;
  flex-shrink: 0;
  margin-left: 4px;
}

/* Empty state */
.empty-state {
  padding: 40px 20px;
  text-align: center;
  font-size: 14px;
  color: var(--grey);
}

/* Bottom padding so last card isn't hidden behind nav bars */
.bottom-spacer { height: 32px; }


/* ═══════════════════════════════════════════════════════════════════
   AR SCREEN
══════════════════════════════════════════════════════════════════════ */

html.ar-html, body.ar-page {
  height: 100%;
  overflow: hidden;
  background: #000;
}

.ar-root {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
}

#ar-container {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#ar-container canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
}

/* ─── AR top bar ─────────────────────────────────────────────────── */
.ar-top-bar {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: max(52px, env(safe-area-inset-top)) 20px 20px;
  background: linear-gradient(to bottom, rgba(0,0,0,0.6) 0%, transparent 100%);
}

.ar-back-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.ar-dest-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 999px;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}

.ar-dest-chip-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--blue-mid);
  flex-shrink: 0;
}

/* ─── Scan prompt ────────────────────────────────────────────────── */
.scan-prompt {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  z-index: 10;
  padding: 32px 24px max(40px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, transparent 100%);
  transition: opacity 0.3s, transform 0.3s;
}

.scan-prompt.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
}

.scan-reticle {
  width: 64px; height: 64px;
  border: 2.5px solid rgba(255,255,255,0.5);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
  animation: reticle-pulse 2s ease-in-out infinite;
}

@keyframes reticle-pulse {
  0%, 100% { opacity: 1; border-color: rgba(255,255,255,0.5); }
  50%       { opacity: 0.55; border-color: rgba(255,255,255,0.25); }
}

.scan-prompt-text {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}

.scan-prompt-sub {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  max-width: 240px;
  line-height: 1.45;
}

/* ─── Nav HUD ────────────────────────────────────────────────────── */
.nav-hud {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  z-index: 10;
  padding: 0 16px max(28px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 10px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.35s, transform 0.35s;
}

.nav-hud.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.nav-card {
  background: rgba(13,21,38,0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r-lg);
  padding: 16px 18px;
}

.nav-card-heading {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: 4px;
}

.nav-card-step {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

.nav-card-dist {
  margin-top: 4px;
  font-size: 13px;
  font-weight: 500;
  color: var(--blue-mid);
}

.nav-arrived-btn {
  width: 100%;
  height: 54px;
  background: var(--green);
  border-radius: var(--r-md);
  color: #fff;
  font-family: var(--font);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  box-shadow: 0 4px 16px rgba(22,165,102,0.35);
  transition: opacity 0.15s, transform 0.1s;
}

.nav-arrived-btn:active { opacity: 0.85; transform: scale(0.98); }


/* ═══════════════════════════════════════════════════════════════════
   ARRIVAL SCREEN
══════════════════════════════════════════════════════════════════════ */

.arrival-page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 28px max(48px, env(safe-area-inset-bottom));
  text-align: center;
  gap: 0;
  background: var(--bg);
}

.arrival-icon-wrap {
  width: 88px; height: 88px;
  border-radius: 50%;
  background: var(--green-tint);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
}

.arrival-check {
  width: 44px; height: 44px;
  color: var(--green);
}

.arrival-heading {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--navy);
  margin-bottom: 8px;
}

.arrival-sub {
  font-size: 15px;
  color: var(--grey);
  margin-bottom: 36px;
  line-height: 1.5;
}

.arrival-btn {
  width: 100%;
  max-width: 320px;
  height: 54px;
  background: var(--blue);
  color: #fff;
  border-radius: var(--r-md);
  font-family: var(--font);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: opacity 0.15s;
}

.arrival-btn:active { opacity: 0.85; }