/* Escolar — estilos base. Mobile-first (>= 360 px), contraste AA, foco visível. */
:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1c2430;
  --muted: #4f5b6b;
  --primary: #1f5f8b;
  --primary-text: #ffffff;
  --border: #c9d1db;
  --danger: #a4161a;
  --danger-bg: #fdecec;
  --ok: #1e6b3a;
  --ok-bg: #e7f5ec;
  --warn: #7a4b00;
  --warn-bg: #fff4dc;
  --focus: #f2a900;
  --radius: 8px;
  --space: 1rem;
  font-size: 100%;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161c;
    --surface: #1b2129;
    --text: #e8edf3;
    --muted: #b4bfcc;
    --primary: #6fb3e0;
    --primary-text: #0b1a26;
    --border: #3a4552;
    --danger: #ff8a8a;
    --danger-bg: #3a1618;
    --ok: #7fd49a;
    --ok-bg: #133120;
    --warn: #ffd27a;
    --warn-bg: #3a2c0c;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
}

a { color: var(--primary); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--surface);
  padding: .5rem 1rem;
  z-index: 10;
}
.skip:focus { left: .5rem; }

.topbar {
  background: var(--primary);
  color: var(--primary-text);
  padding: .75rem var(--space);
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1rem;
  align-items: center;
  justify-content: space-between;
}
.topbar a, .topbar .link { color: var(--primary-text); }
.brand { font-weight: 700; text-decoration: none; font-size: 1.1rem; }
.topbar nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .25rem 1rem;
}
.topbar nav a[aria-current="page"] { text-decoration: underline; text-underline-offset: 4px; font-weight: 600; }

main { padding: var(--space); max-width: 72rem; margin: 0 auto; }
main:focus { outline: none; }

.footer { text-align: center; padding: 2rem var(--space); color: var(--muted); font-size: .9rem; }

h1 { font-size: 1.5rem; line-height: 1.25; margin: 0 0 1rem; }
h2 { font-size: 1.2rem; margin: 1.5rem 0 .75rem; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.narrow { max-width: 30rem; margin-left: auto; margin-right: auto; }

.muted { color: var(--muted); }

.field { margin-bottom: 1rem; }
label { display: block; font-weight: 600; margin-bottom: .25rem; }
.hint { margin: 0 0 .35rem; color: var(--muted); font-size: .9rem; }
.req { color: var(--danger); }

input, select, textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: .6rem .7rem;
  min-height: 2.75rem;
}
input[type="checkbox"], input[type="radio"] { width: auto; min-height: 0; }
.has-error input, .has-error select, .has-error textarea { border-color: var(--danger); }
.error-text { color: var(--danger); margin: .3rem 0 0; font-size: .95rem; }

button, .button {
  display: inline-block;
  font: inherit;
  font-weight: 600;
  border-radius: 6px;
  padding: .6rem 1.1rem;
  min-height: 2.75rem;
  border: 1px solid var(--primary);
  background: var(--surface);
  color: var(--primary);
  cursor: pointer;
  text-decoration: none;
}
button.primary, .button.primary { background: var(--primary); color: var(--primary-text); }
button.danger { border-color: var(--danger); color: var(--danger); }
button.link {
  border: 0;
  background: none;
  padding: 0;
  min-height: 0;
  text-decoration: underline;
  font-weight: 400;
}
form.inline { display: inline; }

.flash, .alert, .notice {
  padding: .75rem 1rem;
  border-radius: 6px;
  margin: 0 0 1rem;
}
.flash { background: var(--ok-bg); color: var(--ok); }
.alert { background: var(--danger-bg); color: var(--danger); }
.notice { background: var(--warn-bg); color: var(--warn); }

.choices { list-style: none; padding: 0; display: grid; gap: .5rem; }
.choices .button { width: 100%; text-align: center; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .55rem .5rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: .9rem; color: var(--muted); }

.actions { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin: 1rem 0; }
.badge {
  display: inline-block;
  font-size: .8rem;
  padding: .1rem .5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
}
.badge.ok { background: var(--ok-bg); color: var(--ok); border-color: transparent; }
.badge.warn { background: var(--warn-bg); color: var(--warn); border-color: transparent; }
.badge.danger { background: var(--danger-bg); color: var(--danger); border-color: transparent; }

.grid { display: grid; gap: 1rem; }
@media (min-width: 48rem) {
  .grid.two { grid-template-columns: 1fr 1fr; }
  h1 { font-size: 1.75rem; }
}

.code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1.6rem;
  letter-spacing: .15em;
  font-weight: 700;
}
.qr { max-width: 14rem; width: 100%; height: auto; image-rendering: pixelated; }

dl.kv { display: grid; grid-template-columns: max-content 1fr; gap: .25rem 1rem; margin: 0; }
dl.kv dt { font-weight: 600; color: var(--muted); }
dl.kv dd { margin: 0; }

.htmx-request { opacity: .6; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.avatar { width: 6rem; height: 6rem; object-fit: cover; border-radius: 50%; float: right; margin: 0 0 .5rem 1rem; }
.avatar.small { width: 2.5rem; height: 2.5rem; float: none; margin: 0 .5rem 0 0; vertical-align: middle; }
.student-list { list-style: none; padding: 0; display: grid; gap: .75rem; }
.student-list .card { margin: 0; }
.pickups { list-style: none; padding: 0; }
.pickups li { padding: .4rem 0; border-bottom: 1px solid var(--border); }
.subnav .actions { list-style: none; padding: 0; }
.subnav .button { padding: .35rem .7rem; min-height: 2.25rem; font-size: .95rem; }
fieldset { border: 1px solid var(--border); border-radius: 6px; margin: 0 0 1rem; padding: .75rem 1rem; }
fieldset label { font-weight: 400; }
details { margin: .5rem 0; }
summary { cursor: pointer; color: var(--primary); }
h3 { font-size: 1.05rem; margin: 1.25rem 0 .5rem; }

@media print {
  .topbar, .footer, .no-print { display: none; }
  body { background: #fff; color: #000; }
  .card { border: 0; }
}

.prose { white-space: pre-line; }
.verification { font-size: 2.2rem; letter-spacing: .3em; font-weight: 800; }
.invite-print { text-align: center; }
.invite-print .code { display: block; margin: .5rem 0; }
.text-left { text-align: left; }
.recovery { list-style: none; padding: 0; columns: 2; font-size: 1.1rem; }