:root {
  --bg: #f1f5f9; --card: #ffffff; --ink: #0f172a; --muted: #64748b; --line: #e2e8f0;
  --duty: #4f46e5; --aid: #059669; --evac: #dc2626; --warn: #d97706; --ok: #16a34a;
  --duty-bg: #eef2ff; --aid-bg: #ecfdf5; --evac-bg: #fef2f2; --warn-bg: #fffbeb;
  --radius: 14px; --shadow: 0 1px 2px rgb(15 23 42 / .08), 0 4px 12px rgb(15 23 42 / .06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120; --card: #172033; --ink: #e5eaf3; --muted: #94a3b8; --line: #263249;
    --duty: #818cf8; --aid: #34d399; --evac: #f87171; --warn: #fbbf24; --ok: #4ade80;
    --duty-bg: #1e2147; --aid-bg: #0f2a24; --evac-bg: #3a1417; --warn-bg: #33270b;
    --shadow: 0 1px 2px rgb(0 0 0 / .4);
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding-bottom: env(safe-area-inset-bottom);
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
.boot { text-align: center; margin-top: 30vh; color: var(--muted); }
.wrap { max-width: 720px; margin: 0 auto; padding: 0 16px 96px; }

/* top bar */
.top { position: sticky; top: 0; z-index: 20; background: #0f172a; color: #fff; padding: 10px 16px; padding-top: calc(10px + env(safe-area-inset-top)); }
.top .in { max-width: 720px; margin: 0 auto; display: flex; align-items: center; gap: 10px; }
.top h1 { font-size: 1.05rem; margin: 0; flex: 1; line-height: 1.2; }
.top small { display: block; font-weight: 400; opacity: .7; font-size: .75rem; }
.top .who { text-align: right; font-size: .8rem; line-height: 1.2; }
.top .who b { display: block; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: #22c55e; display: inline-block; margin-right: 6px; }
.dot.off { background: #f59e0b; }
.iconbtn { background: transparent; border: 1px solid rgb(255 255 255 / .3); color: #fff; border-radius: 10px; padding: 6px 10px; }

/* buttons */
.btn { border: 0; border-radius: 12px; padding: 12px 16px; font-weight: 600; background: var(--ink); color: var(--bg); min-height: 46px; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn.duty { background: var(--duty); color: #fff; }
.btn.aid { background: var(--aid); color: #fff; }
.btn.evac { background: var(--evac); color: #fff; }
.btn.ok { background: var(--ok); color: #fff; }
.btn.warn { background: var(--warn); color: #1c1100; }
.btn.small { padding: 6px 12px; min-height: 36px; font-size: .9rem; border-radius: 10px; }
.btn.block { width: 100%; }
.btn:disabled { opacity: .5; cursor: default; }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, .card:focus-visible, .chip:focus-within { outline: 3px solid #38bdf8; outline-offset: 2px; }

/* big request buttons */
.bigs { display: grid; gap: 12px; margin: 16px 0; }
.big { display: flex; align-items: center; gap: 14px; text-align: left; border: 0; border-radius: var(--radius); padding: 18px 16px; color: #fff; box-shadow: var(--shadow); }
.big .ico { font-size: 2rem; line-height: 1; }
.big b { display: block; font-size: 1.15rem; }
.big span { font-size: .85rem; opacity: .9; }
.big.duty { background: var(--duty); } .big.aid { background: var(--aid); } .big.evac { background: var(--evac); }
@media (prefers-color-scheme: dark) { .big.duty, .big.aid, .big.evac { color: #0b1120; } }

h2 { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 24px 0 8px; }
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 14px; margin-bottom: 10px; border-left: 6px solid var(--line); display: block; width: 100%; text-align: left; border-top: 0; border-right: 0; border-bottom: 0; }
.card.duty_call { border-left-color: var(--duty); } .card.first_aid { border-left-color: var(--aid); } .card.evacuation { border-left-color: var(--evac); }
.card.attention { box-shadow: 0 0 0 2px var(--warn), var(--shadow); }
.card.closed { opacity: .65; }
.card .row { display: flex; justify-content: space-between; gap: 8px; align-items: flex-start; }
.card .t { font-weight: 700; }
.meta { color: var(--muted); font-size: .85rem; }
.empty { text-align: center; color: var(--muted); padding: 20px; background: var(--card); border-radius: var(--radius); }

.pill { display: inline-block; font-size: .72rem; font-weight: 700; padding: 2px 8px; border-radius: 99px; background: var(--line); color: var(--ink); text-transform: uppercase; letter-spacing: .03em; margin-right: 4px; }
.pill.open { background: var(--warn-bg); color: var(--warn); }
.pill.responding { background: var(--duty-bg); color: var(--duty); }
.pill.resolved { background: var(--aid-bg); color: var(--aid); }
.pill.urgent { background: var(--evac); color: #fff; }
.pill.drill { background: #fde68a; color: #422006; }

/* evacuation banner */
.banner { display: block; width: 100%; border: 0; text-align: left; margin-top: 14px; padding: 16px; border-radius: var(--radius); background: var(--evac); color: #fff; box-shadow: var(--shadow); animation: pulse 1.6s infinite; }
.banner b { font-size: 1.15rem; display: block; }
.banner.drill { background: #b45309; }
@keyframes pulse { 50% { filter: brightness(1.18); } }
@media (prefers-reduced-motion: reduce) { .banner { animation: none; } }

/* forms */
.panel { background: var(--card); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); margin-top: 14px; }
label.f { display: block; font-weight: 600; margin: 14px 0 4px; font-size: .92rem; }
input[type=text], input[type=password], input[type=number], select, textarea {
  width: 100%; padding: 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); min-height: 46px;
}
textarea { min-height: 84px; resize: vertical; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { position: relative; }
.chip input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.chip span { display: block; padding: 8px 14px; border-radius: 99px; border: 1px solid var(--line); background: var(--bg); }
.chip input:checked + span { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.check { display: flex; gap: 10px; align-items: center; margin: 14px 0; padding: 10px 12px; border-radius: 10px; background: var(--bg); }
.check input { width: 22px; height: 22px; }
.notice { padding: 12px; border-radius: 10px; background: var(--warn-bg); color: var(--ink); border: 1px solid var(--warn); margin: 12px 0; font-size: .92rem; }
.notice.evac { background: var(--evac-bg); border-color: var(--evac); }
.err { color: var(--evac); font-weight: 600; margin: 8px 0; min-height: 1.2em; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.actions > * { flex: 1 1 auto; }

/* login */
.login { max-width: 420px; margin: 0 auto; padding: 24px 16px; }
.login h1 { margin: 16px 0 4px; }
.pad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 12px 0; }
.pad button { font-size: 1.4rem; padding: 14px 0; border-radius: 12px; border: 1px solid var(--line); background: var(--card); }
.pin-dots { display: flex; gap: 12px; justify-content: center; margin: 14px 0; }
.pin-dots i { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--muted); }
.pin-dots i.on { background: var(--ink); border-color: var(--ink); }
.demo-hint { font-size: .85rem; color: var(--muted); text-align: center; }

/* detail */
.head { margin-top: 14px; padding: 16px; border-radius: var(--radius); border-left: 8px solid var(--line); background: var(--card); box-shadow: var(--shadow); }
.head.duty_call { border-left-color: var(--duty); background: var(--duty-bg); }
.head.first_aid { border-left-color: var(--aid); background: var(--aid-bg); }
.head.evacuation { border-left-color: var(--evac); background: var(--evac-bg); }
.head h2 { margin: 0 0 4px; font-size: 1.3rem; text-transform: none; letter-spacing: 0; color: var(--ink); }
.head p { margin: 8px 0 0; }
.back { background: none; border: 0; color: var(--duty); font-weight: 600; padding: 12px 0 0; }
.tabs { display: flex; gap: 4px; margin: 16px 0 12px; overflow-x: auto; border-bottom: 1px solid var(--line); }
.tabs button { background: none; border: 0; padding: 10px 14px; border-bottom: 3px solid transparent; color: var(--muted); font-weight: 600; white-space: nowrap; }
.tabs button[aria-selected=true] { color: var(--ink); border-bottom-color: var(--ink); }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 12px 0; }
.stat { background: var(--card); border-radius: 12px; padding: 10px; text-align: center; box-shadow: var(--shadow); }
.stat b { font-size: 1.4rem; display: block; }
.stat small { color: var(--muted); }
.stat.bad b { color: var(--evac); }
.bar { height: 10px; background: var(--line); border-radius: 99px; overflow: hidden; margin: 8px 0; }
.bar i { display: block; height: 100%; background: var(--ok); transition: width .4s; }

/* duties */
.duty { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 12px; margin-bottom: 10px; border-left: 6px solid var(--line); }
.duty.in_progress { border-left-color: var(--duty); } .duty.done { border-left-color: var(--ok); } .duty.issue { border-left-color: var(--evac); background: var(--evac-bg); }
.duty.mine { box-shadow: 0 0 0 2px var(--duty), var(--shadow); }
.duty .t { font-weight: 700; }
.duty.done .t { text-decoration: line-through; opacity: .7; }

/* messages */
.msgs { display: flex; flex-direction: column; gap: 8px; }
.msg { max-width: 88%; padding: 8px 12px; border-radius: 14px; background: var(--card); box-shadow: var(--shadow); align-self: flex-start; }
.msg.mine { align-self: flex-end; background: var(--duty); color: #fff; }
.msg .by { font-size: .75rem; opacity: .75; font-weight: 600; }
.msg.announcement { align-self: stretch; max-width: none; background: var(--evac); color: #fff; font-weight: 600; }
.msg .body { white-space: pre-wrap; overflow-wrap: anywhere; }
.composer { position: fixed; left: 0; right: 0; bottom: 0; background: var(--card); border-top: 1px solid var(--line); padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); z-index: 15; }
.composer .in { max-width: 720px; margin: 0 auto; }
.composer form { display: flex; gap: 8px; align-items: flex-end; }
.composer textarea { min-height: 46px; height: 46px; flex: 1; }
.composer label { font-size: .85rem; display: flex; gap: 6px; align-items: center; margin-bottom: 6px; }

/* timeline */
.tl { list-style: none; margin: 0; padding: 0 0 0 14px; border-left: 2px solid var(--line); }
.tl li { position: relative; padding: 0 0 14px 14px; }
.tl li::before { content: ""; position: absolute; left: -22px; top: 6px; width: 10px; height: 10px; border-radius: 50%; background: var(--muted); }
.tl li.bad::before { background: var(--evac); } .tl li.good::before { background: var(--ok); }
.tl time { font-size: .78rem; color: var(--muted); display: block; }

/* modal & toasts */
.modal { position: fixed; inset: 0; background: rgb(0 0 0 / .55); display: grid; place-items: end center; z-index: 50; }
.modal > div { background: var(--card); width: 100%; max-width: 560px; border-radius: 18px 18px 0 0; padding: 18px 16px calc(18px + env(safe-area-inset-bottom)); }
.modal h3 { margin: 0 0 6px; }
#toasts { position: fixed; top: 70px; left: 0; right: 0; z-index: 60; display: grid; gap: 8px; justify-items: center; pointer-events: none; padding: 0 16px; }
.toast { background: #0f172a; color: #fff; padding: 10px 16px; border-radius: 12px; box-shadow: var(--shadow); max-width: 480px; }
.toast.bad { background: var(--evac); }
.toast.alert { background: var(--evac); font-weight: 700; }

/* unanswered / ownership states */
.pill.unanswered { background: var(--evac); color: #fff; }
.notice.unanswered { background: var(--evac-bg); border: 2px solid var(--evac); font-weight: 600; }
.notice.unanswered small { display: block; font-weight: 400; margin-top: 4px; }
.ownerline { margin: 6px 0; font-weight: 600; }