:root {
  --bg: #f4f6f5;
  --surface: #ffffff;
  --text: #17201e;
  --muted: #5b6764;
  --border: #dde3e1;
  --primary: #0f766e;
  --primary-ink: #ffffff;
  --day: #b45309;
  --day-bg: #fef3c7;
  --night: #4338ca;
  --night-bg: #e0e7ff;
  --warn-bg: #fff7e6;
  --warn: #9a5b00;
  --danger: #b42318;
  --danger-bg: #fdecea;
  --ok-bg: #e7f6ef;
  --ok: #146c43;
  --radius: 14px;
  --shadow: 0 1px 2px rgb(0 0 0 / 6%), 0 4px 16px rgb(0 0 0 / 4%);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1413; --surface: #182120; --text: #e7eeec; --muted: #9aa8a4; --border: #2a3533;
    --primary: #2dd4bf; --primary-ink: #04201c;
    --day: #fbbf24; --day-bg: #3a2a07; --night: #a5b4fc; --night-bg: #1e1b4b;
    --warn-bg: #3a2a07; --warn: #fcd34d; --danger: #f87171; --danger-bg: #3b1212; --ok-bg: #0f2e22; --ok: #6ee7b7;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", "Rubik", "Heebo", Arial, sans-serif;
  padding-bottom: env(safe-area-inset-bottom);
}
a { color: var(--primary); }
h1 { font-size: 1.35rem; margin: 0 0 .4rem; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.topbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: calc(10px + env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) 10px max(16px, env(safe-area-inset-left));
  background: var(--surface); border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--text); text-decoration: none; }
.topnav { display: flex; align-items: center; gap: 14px; }
.topnav form { margin: 0; }
.linklike { background: none; border: 0; color: var(--primary); font: inherit; cursor: pointer; padding: 0; text-decoration: underline; }
.container { max-width: 640px; margin: 0 auto; padding: 16px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin-bottom: 16px; }
.hero { text-align: center; padding: 32px 20px; }
.steps { text-align: start; margin: 24px auto 0; max-width: 320px; color: var(--muted); }
.alert { border-radius: 10px; padding: 10px 14px; margin-bottom: 14px; }
.alert-error { background: var(--danger-bg); color: var(--danger); }
.alert-warn { background: var(--warn-bg); color: var(--warn); }
.alert-ok { background: var(--ok-bg); color: var(--ok); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 22px; border-radius: 12px; border: 1px solid transparent;
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
}
.btn:disabled { opacity: .6; cursor: progress; }
.btn-block { width: 100%; }
.btn-primary { background: var(--primary); color: var(--primary-ink); }
.btn-google { background: var(--surface); color: var(--text); border-color: var(--border); margin-top: 12px; }

.form { display: grid; gap: 18px; }
.field { display: grid; gap: 6px; }
.field > span, legend { font-weight: 600; }
input, select {
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 10px; min-height: 46px; padding: 8px 12px; width: 100%;
}
input:focus-visible, select:focus-visible, .btn:focus-visible, .dropzone:focus-within { outline: 3px solid color-mix(in srgb, var(--primary) 45%, transparent); outline-offset: 2px; }
.times { border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; display: grid; gap: 10px; margin: 0; min-width: 0; }
.form > *, .time-row > * { min-width: 0; }
.time-row { display: grid; grid-template-columns: 3.2rem 1fr auto 1fr; align-items: center; gap: 8px; }
input[type="time"] { direction: ltr; text-align: center; }

.dropzone {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  min-height: 190px; margin-top: 12px; border: 2px dashed var(--border); border-radius: var(--radius);
  color: var(--primary); cursor: pointer; text-align: center; padding: 20px; transition: background .15s, border-color .15s;
}
.dropzone.over { background: color-mix(in srgb, var(--primary) 10%, transparent); border-color: var(--primary); }
.dz-title { font-weight: 700; font-size: 1.1rem; color: var(--text); }
.only-touch { display: none; }
@media (hover: none) and (pointer: coarse) {
  .only-desktop { display: none; }
  .only-touch { display: inline; }
  .dropzone { min-height: 140px; }
}
.status { margin-top: 14px; display: flex; align-items: center; gap: 10px; }
.spinner { width: 20px; height: 20px; border-radius: 50%; border: 3px solid var(--border); border-top-color: var(--primary); animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.tips { font-size: .9rem; padding: 0 4px; }

.section-title { font-size: 1rem; margin: 20px 4px 8px; }
.shift-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.shift-card {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px;
  border-inline-start: 5px solid var(--day);
}
.shift-card.night { border-inline-start-color: var(--night); }
.shift-card.stale { border-inline-start-color: var(--danger); }
.shift-card.flagged { background: var(--warn-bg); }
.shift-card.off { opacity: .45; }
.include { display: flex; align-items: center; justify-content: center; min-width: 44px; min-height: 44px; margin: -6px; cursor: pointer; }
.include input { width: 22px; height: 22px; min-height: 0; accent-color: var(--primary); }
.shift-main { flex: 1; display: grid; gap: 6px; min-width: 0; }
.shift-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; }
.shift-date { font-weight: 700; }
.badge { font-size: .78rem; font-weight: 600; padding: 2px 8px; border-radius: 999px; }
.badge-day { background: var(--day-bg); color: var(--day); }
.badge-night { background: var(--night-bg); color: var(--night); }
.badge-muted { background: var(--bg); color: var(--muted); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.shift-times { display: flex; align-items: center; gap: 8px; }
.shift-times input { flex: 1 1 0; min-width: 0; max-width: 10rem; min-height: 42px; padding: 4px 6px; }
.flag { color: var(--warn); font-size: .875rem; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips form { margin: 0; }
.chip { font: inherit; min-height: 40px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--border); background: var(--bg); color: var(--text); cursor: pointer; }

.actionbar {
  position: sticky; bottom: 0; margin: 16px -16px 0; padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: linear-gradient(to top, var(--bg) 70%, transparent);
}
.result { margin-top: 16px; text-align: center; }
.result .big { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }

.btn-danger { background: var(--danger-bg); color: var(--danger); border-color: color-mix(in srgb, var(--danger) 35%, transparent); }
.footer { text-align: center; padding: 8px 16px calc(24px + env(safe-area-inset-bottom)); }
.footer a { color: inherit; }
.prose h2 { font-size: 1.05rem; margin: 1.4em 0 .4em; }
.prose ul { padding-inline-start: 1.2em; }
.prose li { margin-bottom: .4em; }