:root {
  /* GutCall brand: USC cardinal and gold (colors only; no USC or Keck names or marks). See public/brand/. */
  --cardinal: #990000; --cardinal-deep: #5C0000; --gold: #FFCC00; --gold-soft: #FFE680;
  --bg: #FAF8F5; --card: #fff; --ink: #1F1A17; --muted: #625A54; --line: #E6E0D8; --accent: #990000; --accent-ink: #fff;
  --danger: #B42318; --danger-bg: #FDECEA; --warn: #7A5A00; --warn-bg: #FFF4C2; --ok: #146C2E; --ok-bg: #E4F4E8; --today: #FFF4C2;
  --top: #990000; --top-ink: #fff; --brand-call: #FFCC00;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #141010; --card: #1F1818; --ink: #F4EFEA; --muted: #B3A9A2; --line: #3A2E2C; --accent: #FFCC00; --accent-ink: #2A0000;
    --danger: #FF8A80; --danger-bg: #3A1D1B; --warn: #FFCC00; --warn-bg: #3A3014; --ok: #7FD49A; --ok-bg: #16301F; --today: #3A2A10;
    --top: #5C0000; --top-ink: #F4EFEA; color-scheme: dark; }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--bg); color: var(--ink); }
a { color: var(--accent); }
.top { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; padding: 8px 16px; background: var(--top); color: var(--top-ink); position: sticky; top: 0; z-index: 5; }
.brand { display: flex; align-items: center; gap: 8px; font: 800 20px/1 ui-rounded, "SF Pro Rounded", system-ui, sans-serif; letter-spacing: -.5px; text-decoration: none; color: var(--top-ink); }
.brand img { width: 34px; height: 34px; }
.brand b { color: var(--brand-call); font-weight: 800; }
nav { display: flex; gap: 4px; flex-wrap: wrap; }
nav a { padding: 6px 10px; border-radius: 8px; text-decoration: none; color: var(--top-ink); opacity: .8; font-weight: 600; }
nav a.on { background: rgba(255, 204, 0, .2); box-shadow: inset 0 -3px 0 var(--gold); opacity: 1; }
.who { margin-left: auto; font-size: 13px; opacity: .85; display: flex; gap: 10px; align-items: center; }
.who button { padding: 3px 10px; font-size: 13px; background: transparent; border-color: var(--gold); color: var(--gold); }
.quip { color: var(--muted); font-style: italic; }
.foot { text-align: center; color: var(--muted); font-size: 13px; padding: 24px 16px 40px; }
/* sign-in pages */
.auth { max-width: 420px; margin: 40px auto; padding: 0 16px; }
.auth .logo { display: block; width: 100%; max-width: 360px; margin: 0 auto 18px; }
.auth .logo.dark { display: none; }
@media (prefers-color-scheme: dark) { .auth .logo.light { display: none; } .auth .logo.dark { display: block; } }
.auth form { display: flex; flex-direction: column; gap: 12px; }
.auth h1 { text-align: center; }
.auth .err { color: var(--danger); min-height: 1.5em; margin: 0; }
.auth input.code { font-size: 26px; letter-spacing: 8px; text-align: center; font-variant-numeric: tabular-nums; }
.qr { display: flex; justify-content: center; background: #fff; padding: 12px; border-radius: 10px; }
.qr svg { width: 200px; height: 200px; }
.steps { padding-left: 20px; margin: 0; }
fieldset.pick { border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; display: flex; flex-direction: column; gap: 6px; }
fieldset.pick legend { font-size: 13px; color: var(--muted); padding: 0 4px; }
.steps li { margin-bottom: 6px; }
main { max-width: 1100px; margin: 0 auto; padding: 16px; }
h1 { font-size: 22px; margin: 4px 0 12px; }
h2 { font-size: 17px; margin: 20px 0 8px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 14px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--ink); font-size: 14px; }
input, select, textarea { font: inherit; padding: 7px 9px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--ink); min-width: 0; }
textarea { min-height: 60px; }
button { font: inherit; font-weight: 600; padding: 7px 14px; border-radius: 8px; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink); cursor: pointer; }
button.ghost { background: transparent; color: var(--accent); }
button.danger { border-color: var(--danger); background: transparent; color: var(--danger); }
button:disabled { opacity: .5; cursor: default; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); font-weight: 600; }
tr.link { cursor: pointer; }
tr.link:hover td { background: var(--today); }
.tag { display: inline-block; padding: 1px 8px; border-radius: 99px; font-size: 12px; font-weight: 600; background: var(--line); color: var(--ink); white-space: nowrap; }
.tag.emergency { background: var(--danger-bg); color: var(--danger); }
.tag.urgent { background: var(--warn-bg); color: var(--warn); }
.tag.ok { background: var(--ok-bg); color: var(--ok); }
.tag.loc { background: var(--today); color: var(--ink); }
.loc-pick { display: flex; flex-wrap: wrap; gap: 6px 14px; }
.big { font-size: 26px; font-weight: 700; margin: 2px 0; }
.cal { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 4px; }
.cal .hd { font-size: 12px; color: var(--muted); text-align: center; font-weight: 600; padding: 4px 0; }
.cal .day { min-height: 78px; background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 5px 6px; font-size: 12px; cursor: pointer; overflow: hidden; }
.cal .day.out { opacity: .45; }
.cal .day.today { outline: 2px solid var(--accent); }
.cal .day.sel { background: var(--today); border-color: var(--accent); }
.cal .day.holiday .n::after { content: " ★"; color: var(--warn); }
.cal .n { font-weight: 700; font-size: 13px; }
.cal .doc { font-weight: 600; margin-top: 2px; overflow-wrap: anywhere; }
.cal .bak { color: var(--muted); overflow-wrap: anywhere; }
.cal .empty { color: var(--danger); }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 10px; }
.toolbar .title { font-weight: 700; font-size: 17px; min-width: 150px; text-align: center; }
dl.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; }
dl.kv dt { color: var(--muted); }
dl.kv dd { margin: 0; overflow-wrap: anywhere; }
pre.transcript { white-space: pre-wrap; font: 14px/1.55 ui-monospace, Menlo, monospace; background: var(--bg); padding: 12px; border-radius: 8px; max-height: 420px; overflow: auto; }
.code { font-family: ui-monospace, Menlo, monospace; font-size: 13px; background: var(--bg); padding: 2px 6px; border-radius: 4px; overflow-wrap: anywhere; }
#toast { border-left: 4px solid var(--gold); position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 8px; opacity: 0; transition: opacity .2s; pointer-events: none; max-width: calc(100% - 32px); }
#toast.show { opacity: 1; }
.banner { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; background: var(--warn-bg); color: var(--warn); }
@media (max-width: 640px) {
  .cal .day { min-height: 58px; padding: 3px; font-size: 11px; }
  .cal .bak { display: none; }
  .hide-sm { display: none; }
  .who { width: 100%; margin-left: 0; }
}
button.linkish { background: none; border: 0; padding: 0 0 0 4px; color: inherit; font-weight: 700; cursor: pointer; }
.preview-bar { background: repeating-linear-gradient(-45deg, #FFCC00 0 14px, #FFE680 14px 28px); color: #2A0000; text-align: center; padding: 6px 12px; font-size: 13px; }