/* StudySync — shared styles. Layout: top bar + one working column; wide tables scroll in their own frame. */
:root {
  --bg: #f4f6f7; --surface: #ffffff; --ink: #14232b; --muted: #5a6a72; --line: #d8e0e4;
  --accent: #0f6a7a; --accent-ink: #ffffff; --accent-soft: #e1eff2;
  --ok: #1d7646; --ok-soft: #e2f2e9; --warn: #925600; --warn-soft: #fbeed6;
  --bad: #b3261e; --bad-soft: #fbe4e2; --grey: #5e6a70; --grey-soft: #eceff1;
  --body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f171b; --surface: #172329; --ink: #e3ebee; --muted: #9aabb2; --line: #2a3a42;
    --accent: #5cc3d3; --accent-ink: #0f171b; --accent-soft: #163940;
    --ok: #6fd39c; --ok-soft: #173527; --warn: #f0b65a; --warn-soft: #3a2c14;
    --bad: #ff8a80; --bad-soft: #3d1c1a; --grey: #a7b3b9; --grey-soft: #253238;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font: 15px/1.5 var(--body); }
a { color: var(--accent); }
h1 { font-size: 1.5rem; line-height: 1.2; margin: 0; text-wrap: balance; }
h2 { font-size: 1.1rem; margin: 0; }
p { margin: 0; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.mono, .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.nowrap { white-space: nowrap; }

/* top bar */
.topbar { background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.topbar-in { max-width: 1240px; margin: 0 auto; display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center;
  padding: 10px max(16px, env(safe-area-inset-right, 0px)) 10px max(16px, env(safe-area-inset-left, 0px)); }
.brand { font-weight: 700; font-size: 1.1rem; text-decoration: none; color: var(--ink); }
.brand span { color: var(--accent); }
.nav { display: flex; flex-wrap: wrap; gap: 2px; flex: 1; }
.nav a { text-decoration: none; color: var(--muted); font-weight: 600; font-size: .9rem; padding: 6px 10px; border-radius: 7px; }
.nav a.on { background: var(--accent-soft); color: var(--accent); }
.who { font-size: .85rem; color: var(--muted); display: flex; gap: 10px; align-items: center; }

main { max-width: 1240px; margin: 0 auto; display: flex; flex-direction: column; gap: 18px;
  padding: 22px max(16px, env(safe-area-inset-right, 0px)) 60px max(16px, env(safe-area-inset-left, 0px)); }
.head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 12px; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 18px; display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; }
.spread { justify-content: space-between; align-items: center; }
.grid2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 18px; align-items: start; }
@media (max-width: 820px) { .grid2 { grid-template-columns: 1fr; } }

/* forms */
label { display: flex; flex-direction: column; gap: 4px; font-size: .74rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }
label.inline { flex-direction: row; align-items: center; gap: 6px; text-transform: none; letter-spacing: 0; font-size: .85rem; font-weight: 500; color: var(--ink); }
input, select, textarea { font: 500 .92rem var(--body); color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 7px; padding: 7px 9px; min-width: 0; max-width: 100%; }
input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent); }
input.w-num { width: 70px; }
input.w-date { width: 150px; }
input:disabled, select:disabled { opacity: .65; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.req { border-color: var(--bad) !important; background: var(--bad-soft) !important; }

.btn { font: 600 .88rem var(--body); border: 1px solid var(--accent); color: var(--accent); background: transparent; border-radius: 8px; padding: 7px 13px; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
.btn.solid { background: var(--accent); color: var(--accent-ink); }
.btn.danger { border-color: var(--bad); color: var(--bad); }
.btn.danger.solid { background: var(--bad); color: var(--surface); }
.btn.small { padding: 4px 9px; font-size: .8rem; }
.btn:disabled { opacity: .5; cursor: default; }
.link { background: none; border: 0; color: var(--accent); cursor: pointer; font: inherit; padding: 0; text-decoration: underline; }

/* tables */
.scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; font-size: .88rem; }
th { text-align: left; font-size: .7rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); font-weight: 600; padding: 9px 8px; border-bottom: 1px solid var(--line); background: var(--bg); white-space: nowrap; }
td { padding: 7px 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
tr:last-child td { border-bottom: 0; }
td input, td select { width: 100%; padding: 5px 7px; font-size: .86rem; }
td input.w-num { width: 62px; }
td select { min-width: 130px; }
td input:not(.w-num):not(.w-date):not([type=checkbox]) { min-width: 170px; }
table.wide { min-width: 1240px; }
table.mid { min-width: 720px; }
.empty { padding: 18px; color: var(--muted); text-align: center; }

/* status pills */
.pill { display: inline-block; font-size: .72rem; font-weight: 600; padding: 2px 9px; border-radius: 99px; white-space: nowrap; }
.st-ok { background: var(--ok-soft); color: var(--ok); }
.st-warn { background: var(--warn-soft); color: var(--warn); }
.st-bad { background: var(--bad-soft); color: var(--bad); }
.st-plan { background: var(--accent-soft); color: var(--accent); }
.st-grey { background: var(--grey-soft); color: var(--grey); }

/* numbers row on dashboard */
.counts { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }
.count { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; display: flex; flex-direction: column; gap: 2px; }
.count b { font-size: 1.7rem; font-family: var(--mono); font-variant-numeric: tabular-nums; }
.count.bad b { color: var(--bad); } .count.warn b { color: var(--warn); } .count.plan b { color: var(--accent); }

/* week planning */
table.week { min-width: 980px; table-layout: fixed; }
table.week td { vertical-align: top; border-left: 1px solid var(--line); height: 64px; }
table.week td:first-child { border-left: 0; }
table.week th.today, table.week td.today { background: var(--accent-soft); }
td.off { background: repeating-linear-gradient(135deg, transparent 0 6px, var(--line) 6px 7px); }
.nurse b { display: block; }
.load { font: .74rem var(--mono); color: var(--muted); }
.load.over { color: var(--bad); font-weight: 700; }
a.chip { display: block; font-size: .76rem; line-height: 1.3; padding: 4px 6px; border-radius: 6px; margin-bottom: 4px; background: var(--accent-soft); color: var(--ink); border-left: 3px solid var(--accent); text-decoration: none; }
a.chip .mono { font-size: .72rem; }
a.chip.done { opacity: .6; border-left-color: var(--ok); }
a.chip.warn { background: var(--warn-soft); border-left-color: var(--warn); }
a.chip.bad { background: var(--bad-soft); border-left-color: var(--bad); }
.legend { display: flex; flex-wrap: wrap; gap: 14px; font-size: .8rem; color: var(--muted); }
.legend span { display: inline-flex; gap: 6px; align-items: center; }
.legend i { width: 12px; height: 12px; border-radius: 3px; display: inline-block; border-left: 3px solid var(--accent); background: var(--accent-soft); }
.legend i.done { border-color: var(--ok); background: var(--ok-soft); } .legend i.warn { border-color: var(--warn); background: var(--warn-soft); } .legend i.bad { border-color: var(--bad); background: var(--bad-soft); }
.days { display: flex; flex-wrap: wrap; gap: 6px; }

/* auth + messages */
.auth { max-width: 420px; margin: 8vh auto 0; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); }
.tabs button { border: 0; background: none; font: 600 .9rem var(--body); color: var(--muted); padding: 8px 10px; cursor: pointer; border-bottom: 2px solid transparent; }
.tabs button.on { color: var(--accent); border-bottom-color: var(--accent); }
.notice { padding: 10px 12px; border-radius: 8px; background: var(--accent-soft); font-size: .88rem; }
.notice.bad { background: var(--bad-soft); color: var(--bad); }
.notice.warn { background: var(--warn-soft); color: var(--warn); }
.code-box { font: 700 1.8rem var(--mono); letter-spacing: .2em; padding: 8px 14px; border: 2px dashed var(--accent); border-radius: 10px; display: inline-block; }
.toast { position: fixed; right: max(16px, env(safe-area-inset-right, 0px)); bottom: max(16px, env(safe-area-inset-bottom, 0px)); z-index: 20; background: var(--ink); color: var(--bg); padding: 10px 14px; border-radius: 9px; font-size: .9rem; max-width: min(420px, calc(100vw - 32px)); box-shadow: 0 4px 18px rgba(0,0,0,.2); }
.toast.bad { background: var(--bad); color: #fff; }
.loading { color: var(--muted); padding: 30px 0; }

/* participant card (printed) */
.card { border: 1px solid var(--line); border-radius: 12px; padding: 16px; display: flex; gap: 16px; align-items: center; max-width: 520px; background: var(--surface); }
.card .qr svg { width: 130px; height: 130px; display: block; background: #fff; border-radius: 6px; }
.card dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; font-size: .9rem; }
.card dt { color: var(--muted); } .card dd { margin: 0; font-weight: 600; word-break: break-all; }

/* participant portal */
.portal { max-width: 460px; margin: 0 auto; padding: 28px max(16px, env(safe-area-inset-right, 0px)) 40px max(16px, env(safe-area-inset-left, 0px)); display: flex; flex-direction: column; gap: 16px; }
.visit { display: flex; gap: 12px; padding: 12px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; }
.visit.next { border-color: var(--accent); box-shadow: inset 3px 0 0 var(--accent); }
.visit .d { font: 600 .85rem var(--mono); color: var(--accent); min-width: 84px; }

@media print {
  .topbar, .no-print, .toast, button, .btn { display: none !important; }
  body { background: #fff; color: #000; }
  .panel, .scroll { border: 0; padding: 0; }
  table.wide, table.mid { min-width: 0; }
  input, select { border: 0; background: none; padding: 0; appearance: none; }
  body.print-card main > *:not(.card-print) { display: none !important; }
  body.print-card .card-print { display: block !important; }
}
.card-print { display: none; }