/* Group Scheduler — visual direction from the approved mockups:
   Atkinson Hyperlegible; blue = sign-in password; green = Student Key;
   red-orange outline = conflict; striped = flexible protected time. */

@font-face { font-family: "Atkinson Hyperlegible"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("/static/fonts/atkinson-hyperlegible-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Atkinson Hyperlegible"; font-style: normal; font-weight: 700; font-display: swap;
  src: url("/static/fonts/atkinson-hyperlegible-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "Atkinson Hyperlegible"; font-style: italic; font-weight: 400; font-display: swap;
  src: url("/static/fonts/atkinson-hyperlegible-latin-400-italic.woff2") format("woff2"); }

:root {
  --font: "Atkinson Hyperlegible", "Segoe UI", system-ui, -apple-system, sans-serif;
  --ink: #1b1f24;
  --muted: #4d5560;
  --paper: #fbfaf7;
  --card: #ffffff;
  --line: #d6d3cc;

  --signin: #1f5fbf;        /* sign-in password: blue, door icon */
  --signin-soft: #e7effb;
  --key: #1e7a46;           /* Student Key password: green, lock icon */
  --key-soft: #e5f3ea;
  --conflict: #e4572e;      /* conflict outline: red-orange */
  --conflict-soft: #fdece6;
  --firm: #c9cdd3;          /* firm protected time: solid */
  --flexible-stripe: repeating-linear-gradient(135deg, #e3e6ea 0 8px, #f4f5f7 8px 16px); /* flexible: striped */

  --radius: 12px;
  --focus: 3px solid #f2b705;
}

* { box-sizing: border-box; }
html { font-size: 112.5%; }   /* 18px base */
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--paper); line-height: 1.5; }
a { color: var(--signin); }
:focus-visible { outline: var(--focus); outline-offset: 2px; }

.env-banner { background: #6b3fa0; color: #fff; text-align: center; padding: .4rem 1rem; font-weight: 700; }
.top { display: flex; justify-content: space-between; align-items: center; padding: .75rem 1.25rem; border-bottom: 1px solid var(--line); background: var(--card); }
.brand { font-weight: 700; }
main { max-width: 64rem; margin: 0 auto; padding: 1rem; }

.help { margin: 0 0 1rem auto; max-width: 40rem; }
.help summary { cursor: pointer; display: inline-block; padding: .4rem .9rem; border: 2px solid var(--line); border-radius: 999px; background: var(--card); font-weight: 700; }
.help p { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: .75rem 1rem; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; margin: 0 auto 1.25rem; }
.card.narrow { max-width: 34rem; }
.card.wide { max-width: 60rem; }
h1 { font-size: 1.6rem; margin: 0 0 .75rem; display: flex; align-items: center; gap: .6rem; }
h2 { font-size: 1.25rem; margin: .25rem 0 .5rem; }
.why { color: var(--muted); }
.small { font-size: .9rem; color: var(--muted); }
.hint { font-weight: 400; color: var(--muted); }

.stack { display: flex; flex-direction: column; gap: .6rem; }
label { font-weight: 700; }
input[type=password], input[type=text], input:not([type]) { font: inherit; font-size: 1.1rem; padding: .7rem .8rem; border: 2px solid #8a929c; border-radius: 8px; width: 100%; }
.code-input { letter-spacing: .15em; text-transform: uppercase; }
.pw-field { display: flex; gap: .5rem; }
.pw-field input { flex: 1; }
button, .button { font: inherit; font-weight: 700; padding: .7rem 1.2rem; border-radius: 10px; border: 2px solid #8a929c; background: var(--card); color: var(--ink); cursor: pointer; text-decoration: none; display: inline-block; min-height: 48px; }
.primary { background: var(--ink); color: #fff; border-color: var(--ink); }
.primary.signin-color { background: var(--signin); border-color: var(--signin); }
.primary.key-color { background: var(--key); border-color: var(--key); }
.link-button { border: none; background: none; color: var(--signin); text-decoration: underline; padding: .3rem; min-height: auto; }
form.inline { display: inline; }
.check { display: flex; gap: .6rem; align-items: center; font-weight: 700; }
.check input { width: 1.4rem; height: 1.4rem; }

.notice { background: #eef4ee; border-left: 5px solid var(--key); padding: .6rem .9rem; border-radius: 6px; }
.error { background: var(--conflict-soft); border-left: 5px solid var(--conflict); padding: .6rem .9rem; border-radius: 6px; }
.callout { background: #fff8e1; border-left: 5px solid #f2b705; padding: .75rem 1rem; border-radius: 6px; font-weight: 700; }

.icon { width: 1.4em; height: 1.4em; vertical-align: middle; }
.icon.big { width: 2.6rem; height: 2.6rem; }
.icon.warn { color: var(--conflict); }
.pw-badge { display: inline-flex; align-items: center; justify-content: center; border-radius: 999px; padding: .35rem; }
.pw-badge.signin { color: var(--signin); background: var(--signin-soft); }
.pw-badge.key { color: var(--key); background: var(--key-soft); }
.pw-pair { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 1rem; margin: 1rem 0; }
.pw-card { border-radius: var(--radius); padding: 1.25rem; border: 3px solid; }
.pw-card.signin { border-color: var(--signin); background: var(--signin-soft); }
.pw-card.key { border-color: var(--key); background: var(--key-soft); }
.pw-signin { border-top: 6px solid var(--signin); }
.pw-key { border-top: 6px solid var(--key); }

.strength { margin: 0; min-height: 1.5em; font-weight: 700; }
.strength[data-level="weak"] { color: var(--conflict); }
.strength[data-level="ok"] { color: #8a6d00; }
.strength[data-level="strong"] { color: var(--key); }

/* Full-screen "write it down now" warning */
body.fullscreen-warning { background: #fff; }
body.fullscreen-warning.signin { box-shadow: inset 0 0 0 10px var(--signin); min-height: 100vh; }
body.fullscreen-warning.key { box-shadow: inset 0 0 0 10px var(--key); min-height: 100vh; }
.warning-screen { max-width: 40rem; margin: 1rem auto; text-align: left; }
.warning-icons { display: flex; gap: .75rem; align-items: center; margin-bottom: .5rem; }
.warning-text { font-size: 1.25rem; font-weight: 700; }

/* Board tokens (used from Milestone 5 on) */
.conflict { outline: 3px solid var(--conflict); outline-offset: -1px; }
.protected-firm { background: var(--firm); }
.protected-flexible { background: var(--flexible-stripe); }

/* Admin */
body.admin .admin-top { background: #23272e; color: #fff; }
table { border-collapse: collapse; width: 100%; }
.kv th { text-align: left; width: 14rem; padding: .3rem .5rem; vertical-align: top; }
.kv td, .list td, .list th { padding: .3rem .5rem; border-bottom: 1px solid var(--line); text-align: left; }
.row { display: flex; gap: 1rem; flex-wrap: wrap; }
.setup-code { font-size: 2.4rem; font-weight: 700; letter-spacing: .12em; font-family: var(--font); }

@media (max-width: 30rem) {
  html { font-size: 106%; }
  .card { padding: 1rem; }
}