:root {
  --ground: #f7f6f3;
  --card: #ffffff;
  --ink: #23272b;
  --muted: #6b7280;
  --faint: #9aa1ab;
  --line: #e2dfd8;
  --ok: #1e6e43;
  --ok-bg: #e3f0e8;
  --warn: #8a5a0b;
  --warn-bg: #f6ecd6;
  --crit: #b3341a;
  --crit-bg: #f9e5df;
  --crit-strong: #c23a1c;
  --accent: #2b4a63;
  --chip-ink: #fff;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #141619; --card: #1e2126; --ink: #e8e6e1; --muted: #a8aeb8; --faint: #7d848f;
    --line: #33373d; --ok: #6cc492; --ok-bg: #1c2e24; --warn: #ddab4a; --warn-bg: #322913;
    --crit: #e56a48; --crit-bg: #38201a; --crit-strong: #e05a38; --accent: #7fa7c4; --chip-ink: #16181b;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--ground); color: var(--ink);
  font-family: "Avenir Next", "Segoe UI", Seravek, ui-sans-serif, system-ui, sans-serif;
  line-height: 1.5; padding: 1.5rem 1rem 4rem;
}
main { max-width: 60rem; margin: 0 auto; }
a { color: var(--accent); }
.num { font-variant-numeric: tabular-nums; }
.topbar { display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.topbar h1 { font-size: 1.25rem; margin: 0; letter-spacing: -0.01em; }
.topbar h1 a { color: inherit; text-decoration: none; }
.topbar .date { color: var(--muted); font-size: .85rem; }
.topbar nav { margin-left: auto; display: flex; gap: 1rem; font-size: .85rem; }
.topbar nav a { color: var(--muted); text-decoration: none; }
.topbar nav a:hover { color: var(--accent); }

.chip {
  display: inline-flex; align-items: center; gap: .35rem; font-size: .75rem; font-weight: 600;
  letter-spacing: .04em; padding: .2rem .6rem; border-radius: 999px; white-space: nowrap;
}
.chip.ok { background: var(--ok-bg); color: var(--ok); }
.chip.warn { background: var(--warn-bg); color: var(--warn); }
.chip.crit { background: var(--crit-bg); color: var(--crit); }
.chip.you { background: var(--accent); color: var(--chip-ink); }
.chip.mut { background: var(--line); color: var(--muted); }

.alarm {
  background: var(--crit-bg); border: 1px solid var(--crit); border-left: 5px solid var(--crit-strong);
  border-radius: 8px; padding: 1rem 1.15rem; margin-bottom: 1rem;
}
.alarm .head { display: flex; gap: .6rem; align-items: baseline; flex-wrap: wrap; }
.alarm .head strong { font-size: 1rem; }
.alarm .trail { color: var(--muted); font-size: .85rem; margin-top: .4rem; }
.alarm .trail b { color: var(--crit); font-weight: 600; }
.allgood {
  background: var(--ok-bg); border: 1px solid var(--ok); border-radius: 8px;
  padding: .8rem 1.15rem; margin-bottom: 1rem; color: var(--ok); font-weight: 600; font-size: .95rem;
}

.section-label {
  font-size: .72rem; text-transform: uppercase; letter-spacing: .12em;
  color: var(--muted); font-weight: 600; margin: 1.6rem 0 .6rem;
}
.rows { display: flex; flex-direction: column; gap: .6rem; }
.row {
  display: grid; grid-template-columns: 1.3fr 1fr auto; gap: .5rem 1.25rem; align-items: center;
  background: var(--card); border: 1px solid var(--line); border-radius: 8px;
  padding: .85rem 1.1rem; width: 100%; text-align: left; font: inherit; color: inherit;
  text-decoration: none; cursor: pointer;
}
.row:hover { border-color: var(--accent); }
.row .name { font-weight: 600; }
.row .meta { color: var(--muted); font-size: .82rem; font-weight: 400; }
.row .land { font-size: .85rem; color: var(--muted); text-align: right; }
.row .land b { color: var(--ink); font-weight: 600; }
.slip { color: var(--crit); font-weight: 600; }
@media (max-width: 640px) { .row { grid-template-columns: 1fr; } .row .land { text-align: left; } }

.steps { display: flex; gap: 4px; align-items: center; grid-column: 1 / -1; margin-top: .2rem; }
.step { height: 6px; flex: 1; border-radius: 3px; background: var(--line); }
.step.done { background: var(--ok); }
.step.now.ok-now { background: var(--ok); opacity: .55; }
.step.now.warn-now { background: var(--warn); }
.step.now.crit-now { background: var(--crit-strong); }
.steps-labels { display: flex; gap: 4px; grid-column: 1 / -1; }
.steps-labels span { flex: 1; font-size: .68rem; color: var(--faint); letter-spacing: .02em; }

.back {
  display: inline-block; background: none; border: 1px solid var(--line); border-radius: 6px;
  color: var(--muted); font: inherit; font-size: .85rem; padding: .35rem .8rem; cursor: pointer;
  margin-bottom: 1rem; text-decoration: none;
}
.proj-head { display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap; }
.proj-head h2 { margin: 0; font-size: 1.35rem; letter-spacing: -0.01em; }
.proj-head .meta { color: var(--muted); font-size: .9rem; }
.land-line { margin: .5rem 0 1.5rem; font-size: .95rem; }
.land-line .was { color: var(--muted); text-decoration: line-through; margin-right: .4rem; }

.cols { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 1.5rem; align-items: start; }
@media (max-width: 720px) { .cols { grid-template-columns: 1fr; } }

.rail { display: flex; flex-direction: column; }
.ms { display: grid; grid-template-columns: 5.5rem 1.1rem 1fr; gap: 0 .8rem; position: relative; padding-bottom: 1.15rem; }
.ms .day { font-size: .78rem; color: var(--muted); text-align: right; padding-top: .1rem; }
.ms .day b { display: block; color: var(--ink); font-weight: 600; }
.ms .dot { width: 14px; height: 14px; border-radius: 50%; margin-top: .25rem; background: var(--line); border: 2px solid var(--card); z-index: 1; }
.ms.done .dot { background: var(--ok); }
.ms.alarmed .dot, .ms.overdue .dot { background: var(--crit-strong); }
.ms.due .dot, .ms.delayed .dot { background: var(--warn); }
.ms.next .dot { background: var(--card); border: 2px solid var(--faint); }
.ms::before { content: ""; position: absolute; left: calc(5.5rem + .8rem + 6px); top: 1.1rem; bottom: -0.1rem; width: 2px; background: var(--line); }
.ms:last-child::before { display: none; }
.ms .what { font-size: .92rem; }
.ms .what .title { font-weight: 600; }
.ms .proof { font-size: .8rem; color: var(--muted); margin-top: .15rem; }
.ms .proof .photo { display: inline-flex; align-items: center; gap: .3rem; border: 1px solid var(--line); border-radius: 5px; padding: .1rem .5rem; margin-right: .4rem; background: var(--ground); text-decoration: none; }
.ms.alarmed .what .title, .ms.overdue .what .title { color: var(--crit); }
.stage-form { display: flex; align-items: center; gap: .5rem; font-size: .85rem; color: var(--muted); margin: 0 0 1.4rem; }
.stage-form select { width: auto; font-size: .85rem; padding: .3rem .5rem; }
.stage-form label { display: inline-flex; align-items: center; gap: .3rem; font-weight: 400; margin: 0; }
.ms.due .what .title, .ms.delayed .what .title { color: var(--warn); }
.ms .alarmbox { margin-top: .45rem; background: var(--crit-bg); border-radius: 6px; padding: .55rem .75rem; font-size: .82rem; }
.ms .warnbox { margin-top: .45rem; background: var(--warn-bg); border-radius: 6px; padding: .55rem .75rem; font-size: .82rem; }
.ms.next .what { color: var(--muted); }
.ms .actions { margin-top: .4rem; display: flex; gap: .4rem; flex-wrap: wrap; align-items: center; }

.panel { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 1rem 1.15rem; margin-bottom: 1.25rem; }
.panel h3 { margin: 0 0 .6rem; font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }
.decide { border-left: 4px solid var(--accent); }
.decide .q { font-size: .92rem; margin-bottom: .7rem; }
.filerow { display: flex; justify-content: space-between; align-items: baseline; gap: .8rem; font-size: .88rem; padding: .35rem 0; flex-wrap: wrap; }
.filerow .fname { font-weight: 600; }
.filerow.old { color: var(--faint); }
.filerow.old .fname { font-weight: 400; text-decoration: line-through; }
.ack-pend { color: var(--warn); font-size: .8rem; font-weight: 600; }
.ack-ok { color: var(--ok); font-size: .8rem; font-weight: 600; }

.msg { padding: .5rem 0; border-top: 1px solid var(--line); font-size: .88rem; }
.msg:first-of-type { border-top: none; }
.msg .who { font-size: .76rem; color: var(--muted); margin-bottom: .1rem; }
.feednote { font-size: .78rem; color: var(--faint); margin-top: .6rem; }

/* buttons & forms */
button, .btn {
  font: inherit; font-size: .85rem; font-weight: 600; border-radius: 6px; padding: .45rem .9rem;
  cursor: pointer; border: 1px solid var(--line); background: var(--card); color: var(--ink); text-decoration: none; display: inline-block;
}
button.primary, .btn.primary { background: var(--accent); border-color: var(--accent); color: var(--chip-ink); }
button.danger, .btn.danger { background: var(--crit-strong); border-color: var(--crit-strong); color: #fff; }
button.small, .btn.small { font-size: .78rem; padding: .3rem .7rem; }
button:focus-visible, .btn:focus-visible, .row:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
label { display: block; font-size: .8rem; font-weight: 600; color: var(--muted); margin: .8rem 0 .25rem; }
input[type=text], input[type=date], input[type=number], input[type=password], select, textarea {
  width: 100%; font: inherit; font-size: .92rem; color: var(--ink); background: var(--ground);
  border: 1px solid var(--line); border-radius: 6px; padding: .5rem .65rem;
}
textarea { min-height: 6rem; }
form.inline { display: inline; }
.formgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1.25rem; }
@media (max-width: 640px) { .formgrid { grid-template-columns: 1fr; } }
.hint { font-size: .78rem; color: var(--faint); margin-top: .3rem; }
table.plain { width: 100%; border-collapse: collapse; font-size: .9rem; }
table.plain th { text-align: left; font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); padding: .4rem .6rem; border-bottom: 1px solid var(--line); }
table.plain td { padding: .45rem .6rem; border-bottom: 1px solid var(--line); }

/* vendor-facing check-in page */
.vendor-wrap { max-width: 30rem; margin: 0 auto; }
.vendor-card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1.5rem 1.4rem; }
.vendor-card .brand { font-size: .75rem; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); font-weight: 600; margin-bottom: 1rem; }
.vendor-card h2 { margin: 0 0 .2rem; font-size: 1.25rem; }
.vendor-card .zh { color: var(--muted); }
.vendor-card .duedate { font-size: .9rem; color: var(--muted); margin: .3rem 0 1.2rem; }
.bigbtn {
  display: block; width: 100%; text-align: center; font-size: 1.05rem; font-weight: 700;
  padding: .9rem 1rem; border-radius: 10px; margin-top: .7rem; cursor: pointer; border: none; font-family: inherit;
}
.bigbtn.ok { background: var(--ok); color: #fff; }
.bigbtn.delay { background: var(--warn-bg); color: var(--warn); border: 2px solid var(--warn); }
.bigbtn small { display: block; font-weight: 500; font-size: .8rem; opacity: .85; }
.thanks { text-align: center; padding: 2rem 0; }
.thanks .big { font-size: 3rem; }