/* Sign-in and setup pages: the same classic look as the app. Navy band, light page, white card. */
:root {
  --paper: #EEF1F5; --sheet: #FFFFFF; --field: #FFFFFF; --ink: #1B2A41; --muted: #5B6878; --rule: #D5DCE5; --input-border: #C3CCD8;
  --accent: #1F5AA6; --accent-soft: #E7EFFA; --owe: #B42318; --ok: #18794E; --band: #15325E;
  --shadow: 0 1px 2px rgb(16 32 58 / .06), 0 4px 18px rgb(16 32 58 / .08);
  --font-body: "Source Sans 3", "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --paper: #0F1724; --sheet: #172235; --field: #1B2740; --ink: #E6ECF5; --muted: #9AA8BC; --rule: #2A3852; --input-border: #34445F;
  --accent: #7FAEF0; --accent-soft: #1E2E4A; --owe: #FF8A7A; --ok: #5FD39A; --band: #0B1A33; --shadow: 0 1px 2px rgb(0 0 0 / .3); color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink); font: 15.5px/1.5 var(--font-body);
  display: grid; place-items: center; min-height: 100vh;
  padding: max(24px, env(safe-area-inset-top, 0px)) max(16px, env(safe-area-inset-right, 0px)) max(24px, env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px));
}
main { width: min(440px, 100%); display: flex; flex-direction: column; gap: 0; background: var(--sheet); border: 1px solid var(--rule); border-radius: 12px; box-shadow: var(--shadow); overflow: hidden; }
.brand { display: flex; flex-direction: column; gap: 6px; background: var(--band); color: #FFFFFF; padding: 22px 26px 20px; }
.formno { align-self: flex-start; font: 600 11px var(--font-mono); border: 1px solid rgb(255 255 255 / .4); padding: 2px 8px; border-radius: 4px; letter-spacing: .04em; }
h1 { font: 700 30px/1.1 var(--font-body); margin: 0; letter-spacing: -.01em; }
.sub { color: rgb(255 255 255 / .72); font-size: 12.5px; letter-spacing: .06em; text-transform: uppercase; }
.card { padding: 24px 26px 8px; display: flex; flex-direction: column; gap: 14px; }
h2 { font: 700 21px var(--font-body); margin: 0; }
p { margin: 0; color: var(--muted); font-size: 14px; }
form { display: flex; flex-direction: column; gap: 14px; }
label { display: flex; flex-direction: column; gap: 5px; font-weight: 600; font-size: 14px; }
label small { font-weight: 400; color: var(--muted); font-size: 12.5px; }
input { font: inherit; color: var(--ink); background: var(--field); border: 1px solid var(--input-border); border-radius: 6px; padding: 10px 12px; width: 100%; transition: border-color .12s, box-shadow .12s; }
input:hover { border-color: #9AA8BC; }
input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
input.code { font-family: var(--font-mono); letter-spacing: .12em; text-transform: uppercase; }
.check { flex-direction: row; align-items: center; gap: 8px; font-weight: 500; }
.check input { width: 17px; height: 17px; accent-color: var(--accent); }
button { font: inherit; cursor: pointer; border: 1px solid var(--accent); background: var(--accent); color: #FFFFFF; padding: 11px 16px; font-weight: 700; border-radius: 6px; }
button:hover { filter: brightness(1.08); }
button:disabled { opacity: .6; cursor: wait; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.msg { min-height: 1.4em; font-size: 14px; color: var(--owe); }
.msg.ok { color: var(--ok); }
.foot { color: var(--muted); font-size: 12.5px; text-align: center; padding: 14px 26px 18px; border-top: 1px solid var(--rule); margin-top: 16px; }
[hidden] { display: none !important; }