@font-face {
  font-family: Geist;
  src: url('/fonts/Geist-Regular.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: Geist;
  src: url('/fonts/Geist-Medium.woff2') format('woff2');
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: Geist;
  src: url('/fonts/Geist-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: 'Geist Mono';
  src: url('/fonts/GeistMono-Medium.woff2') format('woff2');
  font-weight: 500;
  font-display: swap;
}

:root {
  --bg: #ffffff;
  --fg: #171717;
  --muted: #5c5c66;
  --line: rgb(23 23 23 / 0.10);
  --fill: rgb(23 23 23 / 0.045);
  --warn: #b45309;
  --good: #15803d;
  --info: #1d4ed8;
  --danger: #b91c1c;
  --sans: Geist, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --radius: 14px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0a;
    --fg: #ededed;
    --muted: #a1a1aa;
    --line: rgb(237 237 237 / 0.12);
    --fill: rgb(237 237 237 / 0.06);
    --warn: #fbbf24;
    --good: #4ade80;
    --info: #93b4ff;
    --danger: #f87171;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 15px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

#app { max-width: 620px; margin: 0 auto; padding: 0 20px calc(48px + env(safe-area-inset-bottom)); }

h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -0.02em; line-height: 1.2; }
h1 { font-size: 1.3rem; }
h2 {
  font-size: 1.0625rem; font-weight: 600; letter-spacing: -0.015em;
  color: var(--fg); margin: 34px 2px 12px;
}
.card h2 { font-size: 0.9375rem; margin: 0 0 12px; }
p { margin: 0 0 12px; }
p:last-child { margin-bottom: 0; }

a { color: inherit; text-underline-offset: 4px; }
.muted { color: var(--muted); }
.small { font-size: 0.8125rem; line-height: 1.5; }
.warn { color: var(--warn); }
.grow { flex: 1; min-width: 0; }
.empty { color: var(--muted); font-size: 0.875rem; text-align: center; padding: 40px 8px; }

/* header */
.top {
  display: flex; align-items: center; gap: 10px;
  padding: calc(16px + env(safe-area-inset-top)) 0 14px;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
}
.top .back { display: block; font-size: 1.1rem; text-decoration: none; color: var(--muted); padding: 2px 2px 2px 0; }
.top .back:hover { color: var(--fg); }
.top .titles { min-width: 0; }
.top .sub { color: var(--muted); font-size: 0.8125rem; margin-top: 1px; }

/* surfaces */
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  margin: 12px 0;
}
.card.flush { padding: 0; overflow: hidden; }
.row { display: flex; align-items: center; gap: 12px; padding: 14px 18px; border-top: 1px solid var(--line); }
.row:first-child { border-top: 0; }
.row.link { text-decoration: none; justify-content: space-between; }
.row.link:hover { background: var(--fill); }
.chev { color: var(--muted); }

details > summary {
  cursor: pointer; font-weight: 500; font-size: 0.9375rem; list-style: none;
  display: flex; align-items: center; gap: 8px;
}
details > summary::-webkit-details-marker { display: none; }
details > summary::after { content: "+"; color: var(--muted); margin-left: auto; font-family: var(--mono); }
details[open] > summary::after { content: "–"; }
details[open] > summary { margin-bottom: 16px; }

/* forms */
form { display: grid; gap: 14px; }
label { display: grid; gap: 6px; font-size: 0.8125rem; font-weight: 500; color: var(--muted); }
input, select {
  font: 400 15px/1.4 var(--sans);
  width: 100%; min-height: 44px; padding: 10px 12px;
  color: var(--fg); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px;
  appearance: none;
}
input::placeholder { color: color-mix(in srgb, var(--muted) 65%, transparent); }
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible {
  outline: 2px solid var(--fg); outline-offset: 2px;
}
.code-input { font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.08em; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

fieldset.days { border: 0; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px; }
fieldset.days legend { font-size: 0.8125rem; font-weight: 500; color: var(--muted); margin-bottom: 8px; }
.day-pick {
  display: flex; align-items: center; gap: 6px; font-size: 0.875rem; color: var(--fg);
  padding: 7px 12px; border: 1px solid var(--line); border-radius: 999px; cursor: pointer;
}
.day-pick:has(input:checked) { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.day-pick input { position: absolute; opacity: 0; width: 0; height: 0; min-height: 0; margin: 0; }
.day-pick:has(input:focus-visible) { outline: 2px solid var(--fg); outline-offset: 2px; }
.checkline { display: flex; align-items: flex-start; gap: 10px; font-size: 0.875rem; font-weight: 400; color: var(--fg); }
.checkline input { width: auto; min-height: 0; margin-top: 3px; accent-color: var(--fg); }

/* buttons */
button {
  font: 500 0.9375rem/1.2 var(--sans);
  min-height: 40px; padding: 10px 16px;
  color: var(--fg); background: transparent;
  border: 1px solid var(--line); border-radius: 10px;
  cursor: pointer; transition: background 0.12s ease, opacity 0.12s ease;
}
button:hover { background: var(--fill); }
button:disabled { opacity: 0.45; cursor: default; }
button.primary { background: var(--fg); color: var(--bg); border-color: var(--fg); }
button.primary:hover { opacity: 0.88; background: var(--fg); }
button.small { min-height: 32px; padding: 6px 12px; font-size: 0.8125rem; }
button.link {
  border: 0; background: none; padding: 6px 0; min-height: 0;
  color: var(--muted); font-size: 0.875rem; text-decoration: underline; text-underline-offset: 4px;
}
button.link:hover { background: none; color: var(--fg); }
button.danger { color: var(--muted); }
button.danger:hover { color: var(--danger); }
button.link.danger { color: var(--muted); }
button.link.danger:hover { color: var(--danger); }
button.icon { border: 0; background: none; color: var(--muted); font-size: 1.1rem; padding: 4px 8px; min-height: 0; }
button.icon:hover { color: var(--fg); background: none; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }

/* welcome / access */
.welcome { padding-top: 10vh; max-width: 440px; margin: 0 auto; }
.welcome .hero { text-align: center; margin-bottom: 32px; }
.welcome .mark { width: 64px; height: 64px; border-radius: 18px; display: inline-block; }
.welcome h1 { font-size: 2rem; margin: 20px 0 10px; letter-spacing: -0.035em; }
.welcome .lede { color: var(--muted); font-size: 1rem; margin: 0 auto; max-width: 34ch; }
.welcome .card { text-align: left; }
.welcome .card h2 { font-size: 1.0625rem; }
.welcome .sent { text-align: center; display: grid; gap: 14px; justify-items: center; }

.access-box {
  display: grid; gap: 6px; width: 100%; text-align: left;
  padding: 20px; border-radius: var(--radius);
  background: var(--fg); color: var(--bg); border-color: var(--fg);
}
.access-box:hover { background: var(--fg); opacity: 0.9; }
.access-title { font-size: 1.0625rem; font-weight: 600; letter-spacing: -0.01em; }
.access-title::after { content: " →"; }
.access-sub { font-size: 0.8125rem; font-weight: 400; opacity: 0.75; line-height: 1.45; }
.invited-note { text-align: center; }

/* banner & tabs */
.banner {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 12px 14px; font-size: 0.875rem; color: var(--muted); margin-bottom: 8px;
}
.banner b { color: var(--fg); font-weight: 500; }
.tabs {
  display: flex; gap: 22px; border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
}
.tabs button {
  border: 0; background: none; border-radius: 0; padding: 12px 0; min-height: 0;
  color: var(--muted); font-size: 0.9375rem;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tabs button:hover { background: none; color: var(--fg); }
.tabs button.active { color: var(--fg); border-bottom-color: var(--fg); }
.tabs .count { font-family: var(--mono); font-size: 0.75rem; color: var(--muted); }

/* rides */
h2.day { font-size: 0.875rem; letter-spacing: 0; color: var(--fg); font-weight: 600; margin: 26px 2px 8px; }
h2.day span { color: var(--muted); font-weight: 400; margin-left: 8px; }
.ride { border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; margin: 8px 0; }
.ride.mine { border-color: color-mix(in srgb, var(--fg) 35%, var(--line)); }
.ride.unclaimed { border-color: color-mix(in srgb, var(--warn) 45%, var(--line)); }
.ride.done { opacity: 0.5; }
.ride-top { display: flex; align-items: baseline; gap: 10px; }
.ride .time { font-family: var(--mono); font-size: 0.9375rem; letter-spacing: -0.02em; }
.ride .label { color: var(--muted); font-size: 0.875rem; }
.ride .driver { margin-top: 8px; font-size: 1rem; }
.ride .driver .who { font-weight: 500; }
.ride .driver .needs { color: var(--warn); font-weight: 500; }
.ride .actions { margin-top: 14px; }
.ride .more { margin-top: 10px; }
.ride .more summary { font-size: 0.75rem; color: var(--muted); font-weight: 400; }
.ride .more summary::after { font-size: 0.75rem; }
.ride[data-open] .more { margin-top: 14px; }
.ride .more label { margin-bottom: 10px; }
.pill {
  margin-left: auto; font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.04em;
  text-transform: uppercase; padding: 3px 8px; border-radius: 6px; background: var(--fill); color: var(--muted);
}
.pill.blue { color: var(--info); }
.pill.green { color: var(--good); }

/* weekly */
.intro { margin: 14px 2px 18px; }
.slot select { width: auto; max-width: 44%; min-height: 36px; padding: 6px 10px; font-size: 0.875rem; }

/* karma */
.karma-me { text-align: center; padding: 26px 18px; }
.karma-points { font-family: var(--mono); font-size: 2.75rem; line-height: 1; letter-spacing: -0.04em; }
.karma-points span { font-family: var(--sans); font-size: 0.8125rem; color: var(--muted); letter-spacing: 0; margin-left: 6px; }
.karma-rank { font-weight: 500; margin: 12px 0 14px; }
.progress { height: 3px; background: var(--line); border-radius: 999px; overflow: hidden; margin: 0 auto 10px; max-width: 260px; }
.progress div { height: 100%; background: var(--fg); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin: 34px 2px 12px; }
.section-head h2 { margin: 0; }
.seg { display: flex; gap: 2px; border: 1px solid var(--line); border-radius: 8px; padding: 2px; }
.seg button { min-height: 26px; padding: 3px 10px; font-size: 0.75rem; border: 0; border-radius: 6px; color: var(--muted); }
.seg button.active { background: var(--fill); color: var(--fg); }
.leader .place { width: 22px; font-family: var(--mono); font-size: 0.8125rem; color: var(--muted); }
.leader.me .place, .leader.me strong { color: var(--fg); }
.leader .score { font-family: var(--mono); font-size: 1rem; }
.badges { display: grid; grid-template-columns: repeat(auto-fill, minmax(148px, 1fr)); gap: 10px; }
.badge { border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 14px; }
.badge .badge-emoji { font-size: 1.25rem; line-height: 1; }
.badge strong { display: block; font-size: 0.875rem; font-weight: 500; margin: 10px 0 4px; }
.badge.locked { color: var(--muted); }
.badge.locked .badge-emoji { filter: grayscale(1); opacity: 0.4; }
.badge.locked strong { font-weight: 400; }

/* carpool tab */
.invite-code {
  font-family: var(--mono); font-size: 1.5rem; letter-spacing: 0.06em;
  background: var(--fill); border-radius: 10px; padding: 14px 16px; text-align: center; margin: 4px 0 12px;
}
.feed { list-style: none; padding: 0; margin: 0; }
.feed li { display: flex; justify-content: space-between; gap: 16px; padding: 12px 18px; border-top: 1px solid var(--line); font-size: 0.875rem; }
.feed li:first-child { border-top: 0; }
.feed time { color: var(--muted); font-family: var(--mono); font-size: 0.6875rem; white-space: nowrap; padding-top: 2px; }
.card hr { border: 0; border-top: 1px solid var(--line); margin: 16px -18px; }
.footer-links { display: flex; flex-direction: column; align-items: center; gap: 2px; margin-top: 36px; }
.footer-links a { color: var(--muted); font-size: 0.8125rem; }
.footer-links a:hover { color: var(--fg); }

/* privacy page */
.prose ul { padding-left: 18px; margin: 0 0 12px; }
.prose li { margin-bottom: 6px; font-size: 0.9375rem; }

#toast {
  position: fixed; left: 50%; bottom: calc(28px + env(safe-area-inset-bottom)); transform: translateX(-50%);
  max-width: calc(100% - 40px);
  background: var(--fg); color: var(--bg);
  padding: 11px 16px; border-radius: 10px; font-size: 0.875rem; font-weight: 500;
  box-shadow: 0 8px 30px rgb(0 0 0 / 0.16);
}

/* calendar */
.cal-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 4px 0 10px; }
.cal-nav { display: flex; align-items: center; gap: 2px; }
.cal-nav .icon { font-size: 1.25rem; padding: 4px 10px; }
.cal-period { font-size: 1.0625rem; letter-spacing: -0.015em; color: var(--fg); font-weight: 600; margin: 0 2px 14px; }
.legend { display: flex; flex-wrap: wrap; gap: 16px; margin: 20px 2px 0; font-size: 0.75rem; color: var(--muted); }
.legend span { display: flex; align-items: center; gap: 6px; }
.dot { width: 8px; height: 8px; border-radius: 999px; display: inline-block; flex: none; }
.dot.mine { background: var(--fg); }
.dot.open { background: transparent; border: 1.5px solid var(--warn); }
.dot.other { background: color-mix(in srgb, var(--muted) 55%, transparent); }

.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.cal-grid.head { margin-bottom: 6px; gap: 4px; }
.cal-grid.head span { text-align: center; font-size: 0.6875rem; color: var(--muted); font-family: var(--mono); }
.cal-cell {
  aspect-ratio: 1; min-height: 0; padding: 6px 4px 4px; border: 1px solid transparent; border-radius: 10px;
  display: flex; flex-direction: column; align-items: center; justify-content: flex-start; gap: 5px;
  background: var(--fill); color: var(--fg);
}
.cal-cell:hover { background: color-mix(in srgb, var(--fg) 9%, transparent); }
.cal-cell.faded { background: transparent; color: color-mix(in srgb, var(--muted) 60%, transparent); }
.cal-cell.today { border-color: var(--fg); }
.cal-cell .num { font-family: var(--mono); font-size: 0.8125rem; line-height: 1; }
.cal-cell .dots { display: flex; gap: 3px; min-height: 8px; }

.week-row { display: flex; gap: 14px; padding: 12px 16px; border-top: 1px solid var(--line); align-items: flex-start; }
.week-row:first-child { border-top: 0; }
.week-row.today { background: var(--fill); }
.week-day {
  border: 0; background: none; padding: 0; min-height: 0; width: 42px; flex: none;
  display: flex; flex-direction: column; align-items: center; gap: 2px; color: var(--muted);
}
.week-day:hover { background: none; color: var(--fg); }
.week-day .dow { font-size: 0.6875rem; text-transform: uppercase; letter-spacing: 0.06em; }
.week-day .dnum { font-family: var(--mono); font-size: 1.0625rem; color: var(--fg); }
.week-ride { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; padding: 3px 0 3px 12px; border-left: 2px solid var(--line); font-size: 0.875rem; }
.week-ride + .week-ride { margin-top: 6px; }
.week-ride .time { font-family: var(--mono); font-size: 0.8125rem; }
.week-ride .who { font-weight: 500; }
.week-ride .label { color: var(--muted); font-size: 0.8125rem; }
.week-ride.mine { border-left-color: var(--fg); }
.week-ride.open { border-left-color: var(--warn); }
.week-ride.open .who { color: var(--warn); }
.week-ride.other { border-left-color: color-mix(in srgb, var(--muted) 55%, transparent); }
.week-ride.off .who, .week-ride.off .label { text-decoration: line-through; color: var(--muted); }
.week-ride.empty-row { color: var(--muted); font-size: 0.8125rem; border-left-color: transparent; padding-left: 14px; }

.chip {
  font-size: 0.6875rem; color: var(--muted); background: var(--fill);
  padding: 2px 7px; border-radius: 999px; white-space: nowrap;
}
.ride.mine .time, .ride.open .time { font-weight: 500; }
.ride.other { border-color: var(--line); }
.open-carpool { display: inline-block; margin-top: 12px; font-size: 0.8125rem; color: var(--muted); text-decoration: none; }
.open-carpool:hover { color: var(--fg); text-decoration: underline; }
.cal-link { font-size: 0.8125rem; color: var(--muted); text-decoration: none; }
.cal-link:hover { color: var(--fg); }

/* spare seats */
.seats { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--line); font-size: 0.875rem; }
.seats-pick { display: flex; align-items: center; gap: 8px; font-size: 0.8125rem; }
.seats-pick select { width: auto; min-height: 32px; padding: 4px 8px; font-size: 0.8125rem; }
.seats-open { font-weight: 500; }
.riders { color: var(--muted); font-size: 0.8125rem; }
.seats-chip { color: var(--fg); }

/* imported calendar suggestions */
.suggestion { display: grid; gap: 12px; }
.sug-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.sug-head strong { font-weight: 500; }
.actions.center { justify-content: center; align-items: center; }

/* home: the list of carpools is the page; adding one is a footnote */
.home-row { padding: 16px 18px; align-items: center; }
.home-row strong { font-size: 1.0625rem; letter-spacing: -0.01em; }
.home-row .next { margin-top: 3px; }
.home-row .next .when { font-family: var(--mono); font-size: 0.8125rem; }
.home-row .next .needs { color: var(--warn); }
.home-row .chev { font-size: 1.25rem; }
.add-block { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); }
.add-block h2 { margin: 0 2px 14px; }
.add-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.add-actions button { flex: 1; min-width: 150px; }
.add-form { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.home-item { border-top: 1px solid var(--line); }
.home-item:first-child { border-top: 0; }
.home-item .row { border-top: 0; }
.home-open { text-decoration: none; display: block; }
.home-open:hover strong { text-decoration: underline; text-underline-offset: 3px; }
.home-menu { justify-content: flex-end; gap: 8px; padding-top: 0; padding-bottom: 14px; }
.home-item .icon { font-size: 1.05rem; padding: 8px 4px 8px 12px; line-height: 1; }
.home-item .home-row { gap: 8px; }
.invited-note { margin-top: 16px; }
.invited-note button.link { font-size: inherit; }
.requests .card { border-color: color-mix(in srgb, var(--fg) 30%, var(--line)); }