/* Reset + shared components. Screens add their own css file; nothing screen-
   specific belongs here. */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: var(--fs-md);
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
  overscroll-behavior: none;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  position: fixed; inset: 0; overflow: hidden;  /* app-like, no rubber-band */
}
input, textarea { user-select: text; font: inherit; color: inherit; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
::-webkit-scrollbar { display: none; }

#app { position: absolute; inset: 0; display: flex; flex-direction: column; }
.screen {
  flex: 1; position: relative; overflow: hidden;
  display: flex; flex-direction: column;
  animation: screen-in var(--t-med) var(--ease-out);
}
@keyframes screen-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.screen-scroll { flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch; padding-bottom: calc(var(--tabbar-h) + var(--safe-bottom) + var(--s-4)); }

/* ---- header ---- */
.app-header {
  padding: calc(var(--safe-top) + var(--s-3)) var(--s-4) var(--s-3);
  display: flex; align-items: center; gap: var(--s-3);
}
.app-header h1 { font-size: var(--fs-xl); font-weight: var(--fw-bold); letter-spacing: -0.02em; }
.app-header .spacer { flex: 1; }

/* ---- buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
  min-height: 50px; padding: 0 var(--s-5);
  border-radius: var(--r-md);
  font-size: var(--fs-lg); font-weight: var(--fw-semi);
  transition: transform var(--t-fast) var(--ease), opacity var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.btn:active { transform: scale(0.97); }
.btn[disabled] { opacity: 0.4; pointer-events: none; }
.btn-primary { background: var(--accent); color: var(--on-accent); box-shadow: var(--shadow-1); }
.btn-primary:active { background: var(--accent-strong); }
.btn-dark { background: var(--bg-elev-2); color: var(--text); border: 1px solid var(--line); }
.btn-good { background: var(--good); color: #fff; }
.btn-danger { background: var(--bad-dim); color: var(--bad); }
.btn-ghost { color: var(--text-2); min-height: 44px; }
.btn-block { width: 100%; }
.btn-sm { min-height: 38px; padding: 0 var(--s-4); font-size: var(--fs-sm); border-radius: var(--r-sm); }
.btn-icon { min-height: 44px; min-width: 44px; padding: 0; border-radius: var(--r-full); }

/* ---- cards & lists ---- */
.card {
  background: var(--bg-elev-1);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: var(--s-4);
}
.card + .card { margin-top: var(--s-3); }
.row { display: flex; align-items: center; gap: var(--s-3); }
.row .grow { flex: 1; min-width: 0; }
.list-item {
  display: flex; align-items: center; gap: var(--s-3);
  padding: var(--s-3) var(--s-4); min-height: 56px;
  transition: background var(--t-fast) var(--ease);
}
.list-item:active { background: var(--bg-elev-2); }

/* ---- avatar ---- */
.avatar {
  width: 44px; height: 44px; border-radius: var(--r-full);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; flex-shrink: 0;
  background: var(--bg-elev-2); border: 1px solid var(--line-strong);
}
.avatar-lg { width: 64px; height: 64px; font-size: 32px; }
.avatar-sm { width: 32px; height: 32px; font-size: 16px; }

/* ---- pills / status ---- */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: var(--r-full);
  font-size: var(--fs-xs); font-weight: var(--fw-semi);
  letter-spacing: 0.04em; text-transform: uppercase;
}
.pill-requested { background: var(--accent-dim); color: var(--accent-strong); }
.pill-accepted, .pill-arriving { background: var(--good-dim); color: var(--good); }
.pill-in_progress { background: color-mix(in srgb, var(--info) 14%, transparent); color: var(--info); }
.pill-completed { background: var(--bg-elev-2); color: var(--text-2); }
.pill-declined, .pill-cancelled { background: var(--bad-dim); color: var(--bad); }
.pulse-dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; animation: pulse 1.6s var(--ease) infinite; }
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1);} 50% { opacity: .45; transform: scale(.8);} }

/* ---- inputs ---- */
.field {
  display: flex; align-items: center; gap: var(--s-3);
  background: var(--bg-elev-2); border: 1px solid var(--line);
  border-radius: var(--r-md); padding: 0 var(--s-4); min-height: 52px;
  transition: border-color var(--t-fast) var(--ease);
}
.field:focus-within { border-color: var(--accent); }
.field input { flex: 1; background: none; border: 0; outline: 0; min-width: 0; font-size: var(--fs-lg); }
.field input::placeholder { color: var(--text-3); }

/* ---- bottom sheet ---- */
.sheet {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 500;
  background: var(--bg-elev-1);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  box-shadow: var(--shadow-sheet);
  border-top: 1px solid var(--line-strong);
  padding: var(--s-2) var(--s-4) calc(var(--safe-bottom) + var(--s-4));
  transform: translateY(0);
  transition: transform var(--t-slow) var(--ease-spring);
}
.sheet.hidden { transform: translateY(110%); }
.sheet-grab { width: 36px; height: 4px; border-radius: 2px; background: var(--line-strong); margin: var(--s-1) auto var(--s-3); }

/* ---- modal scrim ---- */
.scrim {
  position: absolute; inset: 0; z-index: 400;
  background: rgba(0,0,0,.55); opacity: 1;
  transition: opacity var(--t-med) var(--ease);
  backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px);
}
.scrim.hidden { opacity: 0; pointer-events: none; }

/* ---- tab bar ---- */
.tabbar {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 300;
  height: calc(var(--tabbar-h) + var(--safe-bottom));
  padding-bottom: var(--safe-bottom);
  display: flex;
  background: var(--bg-elev-1); /* opaque fallback: content must never read through */
  border-top: 1px solid var(--line);
}
@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {
  .tabbar {
    background: color-mix(in srgb, var(--bg-elev-1) 88%, transparent);
    backdrop-filter: blur(20px) saturate(1.4); -webkit-backdrop-filter: blur(20px) saturate(1.4);
  }
}
.tab {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; color: var(--text-2); font-size: var(--fs-xs); font-weight: var(--fw-med);
  transition: color var(--t-fast) var(--ease);
}
.tab svg { width: 24px; height: 24px; }
/* Text-graded amber: raw accent is 2.1:1 on the light glass bar. Dark tokens
   already pass, restored below. */
.tab.active { color: color-mix(in srgb, var(--accent-strong) 62%, var(--text)); }
@media (prefers-color-scheme: dark) {
  .tab { color: var(--text-3); }
  .tab.active { color: var(--accent); }
}
.tab .tab-badge {
  position: absolute; transform: translate(10px, -14px);
  min-width: 16px; height: 16px; border-radius: 8px; padding: 0 4px;
  background: var(--bad); color: #fff; font-size: 10px; font-weight: var(--fw-bold);
  display: flex; align-items: center; justify-content: center;
}

/* ---- toast ---- */
/* Below the header band (44px controls/titles + gap) so a toast never covers
   an interactive element or the screen title. */
#toast-host { position: absolute; top: calc(var(--safe-top) + var(--s-3) + 52px); left: 0; right: 0; z-index: 900; display: flex; flex-direction: column; align-items: center; gap: var(--s-2); pointer-events: none; }
.toast {
  background: var(--bg-elev-3); border: 1px solid var(--line-strong);
  color: var(--text); font-size: var(--fs-sm); font-weight: var(--fw-med);
  padding: var(--s-3) var(--s-5); border-radius: var(--r-full);
  box-shadow: var(--shadow-2);
  animation: toast-in var(--t-med) var(--ease-out);
  max-width: 86%; text-align: center;
}
.toast.err { border-color: color-mix(in srgb, var(--bad) 40%, transparent); color: var(--bad); }
.toast.out { animation: toast-out var(--t-med) var(--ease) forwards; }
@keyframes toast-in { from { opacity: 0; transform: translateY(-12px) scale(.95); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateY(-8px) scale(.97); } }

/* ---- skeleton ---- */
.skel { position: relative; overflow: hidden; background: var(--bg-elev-2); border-radius: var(--r-sm); color: transparent !important; }
.skel::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--text) 7%, transparent), transparent);
  animation: shimmer 1.4s infinite;
}
@keyframes shimmer { from { transform: translateX(-100%);} to { transform: translateX(100%);} }

/* ---- section label ---- */
.section-label {
  font-size: var(--fs-xs); font-weight: var(--fw-semi); letter-spacing: .08em;
  text-transform: uppercase; color: var(--text-3);
  padding: var(--s-4) var(--s-4) var(--s-2);
}

/* ---- empty state ---- */
.empty { text-align: center; padding: var(--s-10) var(--s-6); color: var(--text-3); }
.empty svg { width: 44px; height: 44px; margin-bottom: var(--s-3); opacity: .5; }
.empty .empty-title { color: var(--text-2); font-weight: var(--fw-semi); font-size: var(--fs-md); margin-bottom: var(--s-1); }