/* SG Bus — mobile-first stylesheet
   System fonts, hairline borders, one accent. Dark mode follows the OS
   unless overridden via [data-theme]. */

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

:root {
  --bg:        #f2f3f5;
  --surface:   #ffffff;
  --surface-2: #f6f7f8;
  --line:      #e3e4e8;
  --ink:       #1a1c20;
  --ink-2:     #5b616b;
  --ink-3:     #9aa0aa;
  --accent:    #c8102e;
  --accent-soft: rgba(200,16,46,.08);
  --good:      #1a7f37;
  --warn:      #b45309;
  --bad:       #c8102e;
  --good-soft: rgba(26,127,55,.12);
  --warn-soft: rgba(180,83,9,.12);
  --bad-soft:  rgba(200,16,46,.10);
  --radius:    12px;
  --nav-h:     56px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:        #0d0e10;
    --surface:   #16171a;
    --surface-2: #1d1f23;
    --line:      #26282d;
    --ink:       #ecedef;
    --ink-2:     #9ca1aa;
    --ink-3:     #5e646e;
    --accent:    #ef4458;
    --accent-soft: rgba(239,68,88,.12);
    --good:      #3fb950;
    --warn:      #d29922;
    --bad:       #ef4458;
    --good-soft: rgba(63,185,80,.14);
    --warn-soft: rgba(210,153,34,.14);
    --bad-soft:  rgba(239,68,88,.12);
  }
}
:root[data-theme="dark"] {
  --bg:        #0d0e10;
  --surface:   #16171a;
  --surface-2: #1d1f23;
  --line:      #26282d;
  --ink:       #ecedef;
  --ink-2:     #9ca1aa;
  --ink-3:     #5e646e;
  --accent:    #ef4458;
  --accent-soft: rgba(239,68,88,.12);
  --good:      #3fb950;
  --warn:      #d29922;
  --bad:       #ef4458;
  --good-soft: rgba(63,185,80,.14);
  --warn-soft: rgba(210,153,34,.14);
  --bad-soft:  rgba(239,68,88,.12);
}

html { font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  min-height: 100dvh;
}
.hidden { display: none !important; }
button { font-family: inherit; cursor: pointer; }

/* ── Top bar ─────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 60;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  padding-top: env(safe-area-inset-top);
}
.topbar-inner {
  max-width: 640px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: .65rem 1rem;
}
.wordmark { font-size: 1.05rem; font-weight: 700; letter-spacing: -.01em; }
.wordmark-sub { font-weight: 400; color: var(--ink-3); font-size: .9rem; }
.topbar-actions { display: flex; gap: .4rem; }

.iconbtn {
  width: 36px; height: 36px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--surface);
  color: var(--ink-2);
  display: inline-flex; align-items: center; justify-content: center;
  position: relative;
  transition: background .15s, color .15s;
}
.iconbtn:active { background: var(--surface-2); }
.account-dot {
  position: absolute; top: 6px; right: 6px;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--good); border: 1.5px solid var(--surface);
}
:root[data-theme="dark"] .icon-sun,
.icon-moon { display: block; }
:root[data-theme="dark"] .icon-moon { display: none; }
:root:not([data-theme="dark"]) .icon-sun { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .icon-sun, :root[data-theme="dark"] .icon-sun { display: block; }
  :root:not([data-theme]) .icon-moon { display: none; }
}

/* ── Layout ──────────────────────────────────────────── */
.main {
  max-width: 640px; margin: 0 auto;
  padding: .9rem 1rem calc(var(--nav-h) + env(safe-area-inset-bottom) + 1.5rem);
}
.view { display: none; }
.view.active { display: block; animation: viewIn .18s ease; }
@keyframes viewIn { from { opacity: 0; transform: translateY(4px); } }
.view-title { font-size: 1.25rem; font-weight: 700; letter-spacing: -.01em; }
.view-sub { font-size: .82rem; color: var(--ink-3); margin: .15rem 0 1rem; }

/* ── Search ──────────────────────────────────────────── */
.search-wrap { position: relative; margin-bottom: .75rem; }
.search-box {
  display: flex; align-items: center; gap: .55rem;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 0 .8rem;
  color: var(--ink-3);
  transition: border-color .15s;
}
.search-box:focus-within { border-color: var(--ink-2); }
.search-box input {
  flex: 1; border: none; outline: none; background: none;
  font: inherit; font-size: 16px; /* prevents iOS zoom */
  color: var(--ink); padding: .72rem 0;
}
.search-box input::placeholder { color: var(--ink-3); }
.search-clear {
  border: none; background: var(--surface-2); color: var(--ink-2);
  width: 24px; height: 24px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
}

.autocomplete {
  position: absolute; top: calc(100% + 4px); left: 0; right: 0; z-index: 50;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(0,0,0,.14);
  overflow: hidden; max-height: 290px; overflow-y: auto;
}
.ac-item {
  display: flex; align-items: center; gap: .7rem;
  padding: .65rem .85rem; cursor: pointer;
  border-bottom: 1px solid var(--line);
}
.ac-item:last-child { border-bottom: none; }
.ac-item:active { background: var(--surface-2); }
.ac-code {
  font-variant-numeric: tabular-nums;
  font-size: .72rem; font-weight: 600; color: var(--ink-2);
  background: var(--surface-2); border: 1px solid var(--line);
  padding: .15rem .4rem; border-radius: 6px; flex-shrink: 0;
}
.ac-name { font-size: .88rem; font-weight: 500; }
.ac-road { font-size: .74rem; color: var(--ink-3); }
.ac-empty { padding: .8rem .85rem; font-size: .82rem; color: var(--ink-3); }

/* ── Chips ───────────────────────────────────────────── */
.chips-area { margin-bottom: 1rem; }
.chips-label {
  font-size: .68rem; font-weight: 600; letter-spacing: .08em;
  text-transform: uppercase; color: var(--ink-3);
  margin: 0 0 .4rem .1rem;
}
.chips-row { display: flex; gap: .45rem; overflow-x: auto; padding-bottom: .2rem; scrollbar-width: none; }
.chips-row::-webkit-scrollbar { display: none; }
.chip {
  flex-shrink: 0; display: inline-flex; align-items: center; gap: .4rem;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 999px; padding: .4rem .8rem;
  font-size: .8rem; color: var(--ink);
  transition: border-color .15s;
}
.chip:active { border-color: var(--ink-2); }
.chip .chip-code { font-variant-numeric: tabular-nums; font-weight: 600; }
.chip .chip-name { color: var(--ink-2); max-width: 130px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ── Stop card ───────────────────────────────────────── */
.stop-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: .85rem .95rem .7rem;
  margin-bottom: .75rem;
}
.stop-card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: .75rem; }
.stop-name { font-size: 1.02rem; font-weight: 700; letter-spacing: -.01em; }
.stop-meta { font-size: .78rem; color: var(--ink-3); margin-top: .1rem; }
.stop-code {
  font-variant-numeric: tabular-nums; font-weight: 600;
  color: var(--ink-2); background: var(--surface-2);
  border: 1px solid var(--line); border-radius: 5px;
  padding: 0 .3rem; margin-left: .25rem; font-size: .72rem;
}
.stop-actions { display: flex; gap: .45rem; flex-shrink: 0; }
.pillbtn {
  display: inline-flex; align-items: center; gap: .35rem;
  border: 1px solid var(--line); background: var(--surface);
  color: var(--ink-2); border-radius: 10px;
  padding: 0 .7rem; height: 36px;
  font-size: .8rem; font-weight: 600;
  transition: all .15s;
}
.pillbtn.saved { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.pillbtn.saved svg { fill: currentColor; }
.stop-card-foot {
  display: flex; align-items: center; gap: .35rem; flex-wrap: wrap;
  font-size: .72rem; color: var(--ink-3);
  margin-top: .6rem; padding-top: .55rem;
  border-top: 1px solid var(--line);
}
.foot-sep { opacity: .6; }
.ai-note::before {
  content: ""; display: inline-block; width: 6px; height: 6px;
  border-radius: 50%; background: var(--accent); margin-right: .3rem;
  vertical-align: 1px;
}

/* ── Arrival rows ────────────────────────────────────── */
.rows { display: flex; flex-direction: column; gap: .5rem; }
.rows.refreshing { opacity: .55; transition: opacity .15s; }

.svc {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
}
.svc-head {
  width: 100%; border: none; background: none; color: inherit;
  display: flex; align-items: center; gap: .8rem;
  padding: .7rem .85rem; text-align: left;
}
.svc-head:active { background: var(--surface-2); }
.route-badge {
  min-width: 52px; height: 38px; border-radius: 9px;
  background: var(--ink); color: var(--bg);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.05rem; font-weight: 800; letter-spacing: -.02em;
  padding: 0 .4rem; flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}
.svc-mid { flex: 1; min-width: 0; }
.svc-op { font-size: .74rem; color: var(--ink-3); }
.svc-tags { display: flex; gap: .3rem; margin-top: .15rem; align-items: center; }
.tag {
  font-size: .64rem; font-weight: 600; color: var(--ink-2);
  border: 1px solid var(--line); border-radius: 4px; padding: 0 .3rem;
}
.load-dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; }
.load-dot.SEA { background: var(--good); }
.load-dot.SDA { background: var(--warn); }
.load-dot.LSD { background: var(--bad); }

.svc-eta { text-align: right; flex-shrink: 0; }
.eta-now {
  font-size: 1.45rem; font-weight: 800; line-height: 1;
  font-variant-numeric: tabular-nums; letter-spacing: -.02em;
}
.eta-now .eta-unit { font-size: .68rem; font-weight: 600; color: var(--ink-3); margin-left: .15rem; letter-spacing: 0; }
.eta-now.due { color: var(--good); }
.eta-next { font-size: .74rem; color: var(--ink-3); margin-top: .15rem; font-variant-numeric: tabular-nums; }

.svc .chev { color: var(--ink-3); transition: transform .2s; flex-shrink: 0; }
.svc.open .chev { transform: rotate(180deg); }

.svc-detail {
  display: grid; grid-template-rows: 0fr;
  transition: grid-template-rows .25s ease;
}
.svc.open .svc-detail { grid-template-rows: 1fr; }
.svc-detail-inner { min-height: 0; overflow: hidden; }
.bus-line {
  display: flex; align-items: center; gap: .6rem;
  padding: .55rem .85rem;
  border-top: 1px solid var(--line);
  font-size: .8rem;
}
.bus-line .slot { color: var(--ink-3); font-size: .7rem; width: 34px; flex-shrink: 0; }
.bus-line .bus-times { flex: 1; display: flex; align-items: baseline; gap: .5rem; flex-wrap: wrap; }
.bus-time-ai { font-weight: 700; font-variant-numeric: tabular-nums; }
.bus-time-lta { color: var(--ink-3); font-variant-numeric: tabular-nums; font-size: .74rem; }
.bus-time-lta s, .lta-label { text-decoration: none; }
.adj { font-size: .68rem; font-weight: 600; border-radius: 5px; padding: .05rem .35rem; }
.adj.late  { color: var(--bad);  background: var(--bad-soft); }
.adj.early { color: var(--good); background: var(--good-soft); }
.adj.ontime{ color: var(--ink-3); background: var(--surface-2); }
.load-pill { font-size: .66rem; font-weight: 600; border-radius: 5px; padding: .08rem .4rem; flex-shrink: 0; }
.load-pill.SEA { color: var(--good); background: var(--good-soft); }
.load-pill.SDA { color: var(--warn); background: var(--warn-soft); }
.load-pill.LSD { color: var(--bad);  background: var(--bad-soft); }

/* Skeletons */
.skel {
  height: 64px; border-radius: var(--radius);
  background: linear-gradient(100deg, var(--surface) 40%, var(--surface-2) 50%, var(--surface) 60%);
  background-size: 200% 100%;
  border: 1px solid var(--line);
  animation: skel 1.1s linear infinite;
}
@keyframes skel { to { background-position: -200% 0; } }

/* ── Panels (details/summary) ────────────────────────── */
.panel {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); margin-top: .75rem; overflow: hidden;
}
.panel summary {
  display: flex; align-items: center; gap: .5rem;
  padding: .75rem .9rem; list-style: none;
  font-size: .88rem; font-weight: 600; user-select: none; cursor: pointer;
}
.panel summary::-webkit-details-marker { display: none; }
.panel summary .chev { margin-left: auto; color: var(--ink-3); transition: transform .2s; }
.panel[open] summary .chev { transform: rotate(180deg); }
.panel-badge {
  font-size: .66rem; font-weight: 600; color: var(--ink-3);
  border: 1px solid var(--line); border-radius: 999px; padding: .1rem .5rem;
}
.panel-body { padding: .25rem .9rem .9rem; border-top: 1px solid var(--line); }
.about-body p { font-size: .82rem; color: var(--ink-2); margin-top: .65rem; }
.model-info {
  margin-top: .75rem; padding: .6rem .75rem;
  background: var(--surface-2); border-radius: 9px;
  font-size: .75rem; color: var(--ink-2); line-height: 1.7;
}

.chart-block { margin-top: .9rem; }
.chart-title { font-size: .78rem; font-weight: 600; color: var(--ink-2); margin-bottom: .4rem; }
.chart-hint { font-weight: 400; color: var(--ink-3); }
.chart-box { position: relative; height: 190px; }

/* ── Saved view ──────────────────────────────────────── */
.saved-list { display: flex; flex-direction: column; gap: .5rem; }
.saved-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: .75rem .9rem;
  cursor: pointer;
}
.saved-card:active { background: var(--surface-2); }
.saved-card-top { display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.saved-name { font-size: .92rem; font-weight: 600; }
.saved-road { font-size: .74rem; color: var(--ink-3); }
.saved-remove {
  border: none; background: none; color: var(--ink-3);
  padding: .3rem; border-radius: 7px; flex-shrink: 0;
}
.saved-remove:active { color: var(--bad); background: var(--bad-soft); }
.saved-previews { display: flex; gap: .4rem; margin-top: .55rem; flex-wrap: wrap; min-height: 26px; }
.preview-pill {
  display: inline-flex; align-items: baseline; gap: .3rem;
  font-size: .74rem; border: 1px solid var(--line); border-radius: 7px;
  padding: .15rem .45rem; background: var(--surface-2);
}
.preview-pill b { font-variant-numeric: tabular-nums; }
.preview-pill .pv-min { color: var(--ink-2); font-variant-numeric: tabular-nums; }
.preview-pill .pv-min.due { color: var(--good); font-weight: 700; }
.preview-loading { font-size: .72rem; color: var(--ink-3); }

/* ── Data view ───────────────────────────────────────── */
.stat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .5rem; }
.stat-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: .7rem .8rem;
}
.stat-label { font-size: .66rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); }
.stat-value { font-size: 1.3rem; font-weight: 800; font-variant-numeric: tabular-nums; letter-spacing: -.02em; margin-top: .1rem; }
.stat-sub { font-size: .7rem; color: var(--ink-3); }

.block { margin-top: 1.1rem; }
.block-head { font-size: .85rem; font-weight: 600; margin-bottom: .5rem; display: flex; align-items: center; gap: .45rem; }
.mon-chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.mon-chip {
  font-size: .74rem; font-variant-numeric: tabular-nums;
  border: 1px solid var(--line); background: var(--surface);
  border-radius: 7px; padding: .2rem .5rem; color: var(--ink-2);
}
.tablewrap {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); overflow-x: auto;
}
table { width: 100%; border-collapse: collapse; font-size: .76rem; }
th {
  text-align: left; font-size: .64rem; font-weight: 600;
  letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3);
  padding: .5rem .7rem; border-bottom: 1px solid var(--line);
  background: var(--surface-2); white-space: nowrap;
}
td {
  padding: .45rem .7rem; border-bottom: 1px solid var(--line);
  color: var(--ink-2); font-variant-numeric: tabular-nums; white-space: nowrap;
}
tr:last-child td { border-bottom: none; }
th.num, td.num { text-align: right; }
.delay-pos { color: var(--bad); font-weight: 600; }
.delay-neg { color: var(--good); font-weight: 600; }

/* ── Bottom nav ──────────────────────────────────────── */
.bottomnav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 70;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  display: flex; justify-content: center; gap: .25rem;
  padding: .3rem .5rem calc(.3rem + env(safe-area-inset-bottom));
}
.nav-item {
  flex: 1; max-width: 120px;
  display: flex; flex-direction: column; align-items: center; gap: .1rem;
  border: none; background: none; color: var(--ink-3);
  font-size: .64rem; font-weight: 600;
  padding: .35rem 0 .25rem; border-radius: 10px;
  position: relative; transition: color .15s;
}
.nav-item.active { color: var(--accent); }
.nav-item:active { background: var(--surface-2); }
.nav-badge {
  position: absolute; top: 1px; right: calc(50% - 20px);
  background: var(--accent); color: #fff;
  font-size: .58rem; font-weight: 700;
  min-width: 15px; height: 15px; border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0 .25rem;
}

/* ── Sheet (account) ─────────────────────────────────── */
.sheet-backdrop {
  position: fixed; inset: 0; z-index: 80;
  background: rgba(0,0,0,.45);
  animation: fade .18s ease;
}
@keyframes fade { from { opacity: 0; } }
.sheet {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
  max-width: 480px; margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--line); border-bottom: none;
  border-radius: 18px 18px 0 0;
  padding: .5rem 1.25rem calc(1.25rem + env(safe-area-inset-bottom));
  animation: sheetUp .25s cubic-bezier(.2,.8,.3,1);
}
@keyframes sheetUp { from { transform: translateY(100%); } }
.sheet-handle {
  width: 36px; height: 4px; border-radius: 2px;
  background: var(--line); margin: .35rem auto .9rem;
}
.seg {
  display: flex; background: var(--surface-2);
  border-radius: 10px; padding: 3px; margin-bottom: 1rem;
}
.seg-btn {
  flex: 1; border: none; background: none; color: var(--ink-2);
  font-size: .82rem; font-weight: 600; padding: .5rem 0; border-radius: 8px;
}
.seg-btn.active { background: var(--surface); color: var(--ink); box-shadow: 0 1px 3px rgba(0,0,0,.12); }
.field { display: block; margin-bottom: .8rem; }
.field span { display: block; font-size: .72rem; font-weight: 600; color: var(--ink-2); margin-bottom: .3rem; }
.field input {
  width: 100%; font: inherit; font-size: 16px;
  background: var(--surface-2); color: var(--ink);
  border: 1px solid var(--line); border-radius: 10px;
  padding: .65rem .75rem; outline: none;
}
.field input:focus { border-color: var(--ink-2); }
.bigbtn {
  width: 100%; display: inline-flex; align-items: center; justify-content: center; gap: .45rem;
  border: none; border-radius: 11px;
  background: var(--accent); color: #fff;
  font-size: .92rem; font-weight: 700; padding: .8rem 0;
  margin-top: .25rem;
}
.bigbtn:active { opacity: .85; }
.bigbtn.outline { background: none; border: 1px solid var(--line); color: var(--ink-2); }
.sheet-hint { font-size: .74rem; color: var(--ink-3); margin-top: .75rem; text-align: center; }
.profile-row { display: flex; align-items: center; gap: .8rem; padding: .25rem 0 .5rem; }
.profile-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.1rem; text-transform: uppercase;
}
.profile-name { font-weight: 700; }
.profile-meta { font-size: .74rem; color: var(--ink-3); }

/* ── Misc ────────────────────────────────────────────── */
.error-note {
  background: var(--bad-soft); color: var(--bad);
  border-radius: 9px; padding: .6rem .75rem;
  font-size: .8rem; margin-bottom: .75rem;
}
.empty { text-align: center; color: var(--ink-3); font-size: .84rem; padding: 2rem .5rem; }
.toast {
  position: fixed; bottom: calc(var(--nav-h) + env(safe-area-inset-bottom) + 14px);
  left: 50%; transform: translateX(-50%); z-index: 100;
  background: var(--ink); color: var(--bg);
  font-size: .8rem; font-weight: 500;
  border-radius: 999px; padding: .5rem 1rem;
  white-space: nowrap;
  animation: toastIn .2s ease;
}
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, 6px); } }

@media (min-width: 640px) {
  .stat-grid { grid-template-columns: repeat(3, 1fr); }
  .chart-box { height: 220px; }
}