:root {
  --bg: #f5f6fb;
  --surface: #ffffff;
  --text: #1d2846;
  --muted: #4a5574;
  --border: #e7eaf3;
  --primary: #2f6fde;
  --primary-ink: #ffffff;
  --red: #e5484d;
  --red-bg: #fdecec;
  --badge: #e6eeff;
  --badge-ink: #1f4fae;
  --amber: #8a5a00;
  --amber-bg: #fff4d6;
  --green: #1fa463;
  --marca: #ffc93c;
  --marca-borde: #e0a200;
  --marca-texto: #3b2a00;
  --canto: #cfd6e6;
  --radius: 18px;
  font-family: "Andika", "Comic Sans MS", system-ui, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111827;
    --surface: #1b2438;
    --text: #e8ecf6;
    --muted: #a8b2c8;
    --border: #2a3550;
    --primary: #7aa5ff;
    --red: #ff7b7f;
    --red-bg: #3b1a1c;
    --badge: #233256;
    --badge-ink: #cfdcff;
    --amber: #ffd27a;
    --amber-bg: #3a2f12;
    --green: #4cd18e;
    --canto: #0b1120;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: "Andika", "Comic Sans MS", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}
[hidden] { display: none !important; }
a { color: var(--primary); }
h2 { font-size: 1.05rem; margin: 22px 4px 10px; }
.muted { color: var(--muted); }
small { font-size: .82em; }

/* ---------- acceso ---------- */
.screen { min-height: 100dvh; }
#v-auth, #v-conectar { display: grid; place-items: center; padding: 24px 16px; }
.auth-card {
  width: 100%; max-width: 380px; background: var(--surface);
  border-radius: 20px; padding: 28px 22px; box-shadow: 0 10px 40px rgba(0,0,0,.08);
}
.brand { font-size: 1.7rem; font-weight: 800; }
.brand-sm { font-weight: 800; }
.stack { display: flex; flex-direction: column; gap: 10px; }
input, select {
  font: inherit; color: inherit; background: var(--bg);
  border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; width: 100%;
}
.btn {
  font: inherit; font-weight: 700; border: 0; border-radius: 10px; padding: 12px 16px;
  background: var(--primary); color: var(--primary-ink); cursor: pointer; width: 100%;
}
.btn:disabled { opacity: .6; }
.btn.ghost { background: transparent; color: var(--primary); border: 1px solid var(--border); margin-top: 8px; }
.btn.danger { background: transparent; color: var(--red); border: 1px solid var(--border); }
.link { background: none; border: 0; color: var(--muted); margin-top: 14px; cursor: pointer; font: inherit; }
.error { color: var(--red); min-height: 1.2em; font-size: .9rem; }
.seg { display: flex; background: var(--bg); border-radius: 10px; padding: 4px; margin: 18px 0 14px; }
.seg button { flex: 1; border: 0; background: none; padding: 8px; border-radius: 8px; font: inherit; color: var(--muted); cursor: pointer; }
.seg button.on { background: var(--surface); color: var(--text); font-weight: 700; box-shadow: 0 1px 3px rgba(0,0,0,.1); }

/* ---------- app ---------- */
.top {
  position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 10px;
  padding: calc(10px + env(safe-area-inset-top)) 16px 10px; background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.top select { flex: 1; padding: 8px 10px; font-weight: 600; }
.top .brand-sm { flex: 1; }
.top select:not([hidden]) ~ .icon-btn { margin-left: 0; }
.icon-btn {
  border: 1px solid var(--border); background: var(--bg); color: inherit; border-radius: 10px;
  width: 40px; height: 40px; font-size: 1.2rem; cursor: pointer;
}
.icon-btn.spin { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.sync-info { font-size: .78rem; color: var(--muted); padding: 6px 16px 0; }
.sync-info.warn { color: var(--red); }

main { padding: 4px 16px calc(90px + env(safe-area-inset-bottom)); max-width: 720px; margin: 0 auto; }

.tabs {
  position: fixed; bottom: 0; left: 0; right: 0; display: flex; background: var(--surface);
  border-top: 1px solid var(--border); padding-bottom: env(safe-area-inset-bottom); z-index: 5;
}
.tabs button {
  flex: 1; border: 0; background: none; color: var(--muted); font: inherit; font-size: .7rem;
  padding: 8px 0 10px; display: flex; flex-direction: column; align-items: center; gap: 2px; cursor: pointer;
}
.tabs button span { font-size: 1.25rem; filter: grayscale(1); opacity: .7; }
.tabs button.on { color: var(--primary); font-weight: 700; }
.tabs button.on span { filter: none; opacity: 1; }

.card {
  background: var(--surface); border-radius: var(--radius); padding: 12px 14px; margin-bottom: 10px;
  border-left: 4px solid var(--c, var(--border)); box-shadow: 0 1px 2px rgba(0,0,0,.04);
}
.card.examen { background: linear-gradient(0deg, var(--red-bg), var(--red-bg)) padding-box; border-left-color: var(--red); }
.card p { margin: 4px 0; }
.card-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: .78rem; }
.subject { font-weight: 800; text-transform: uppercase; letter-spacing: .02em; color: var(--muted); }
.date { margin-left: auto; color: var(--muted); }
.card-title { font-weight: 700; margin-top: 4px; }
.card-body { margin-top: 4px; overflow-wrap: anywhere; }
.badge { background: var(--badge); color: var(--badge-ink); border-radius: 999px; padding: 1px 8px; font-weight: 700; font-size: .7rem; }
.badge.red { background: var(--red); color: #fff; }
.adjunto {
  display: inline-block; margin-top: 8px; padding: 8px 12px; border-radius: 10px; background: var(--bg);
  text-decoration: none; font-weight: 600; overflow-wrap: anywhere;
}
.empty { text-align: center; color: var(--muted); padding: 40px 10px; }
.empty.small { padding: 12px; background: var(--surface); border-radius: var(--radius); }
.day { font-size: .95rem; margin: 20px 4px 8px; text-transform: capitalize; }
.day small { color: var(--muted); font-weight: 400; text-transform: none; margin-left: 6px; }
.day.today { color: var(--primary); }
.filters { display: flex; gap: 10px; align-items: center; margin-top: 12px; flex-wrap: wrap; }
.filters select { flex: 1; min-width: 180px; }
.chk { display: flex; align-items: center; gap: 6px; font-size: .9rem; white-space: nowrap; }
.chk input { width: auto; }
.search { margin-top: 12px; }
.nota-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 8px 0; border-top: 1px solid var(--border); }
.nota-row:first-of-type { border-top: 0; }
.nota { font-weight: 800; font-size: 1.15rem; min-width: 44px; text-align: right; }
.nota.low { color: var(--red); }

.toast {
  position: fixed; left: 50%; bottom: calc(80px + env(safe-area-inset-bottom)); transform: translateX(-50%);
  background: #0f172a; color: #fff; padding: 10px 16px; border-radius: 999px; font-size: .9rem; z-index: 20;
  max-width: calc(100% - 32px);
}

/* ---------- Pupitrin · Cole ---------- */
.brand span, .brand-sm span { color: var(--primary); font-weight: 700; }
.top .brand-sm { flex: 1; white-space: nowrap; }
.top select { flex: 0 1 140px; }
.badge.amber { background: var(--amber-bg); color: var(--amber); }
.pupitrin {
  display: inline-flex; align-items: center; gap: 4px; margin-top: 8px; padding: 6px 10px;
  border-radius: 999px; font-size: .8rem; font-weight: 700; text-decoration: none;
  color: var(--primary); background: color-mix(in srgb, var(--primary) 12%, transparent);
}
.repasar-hoy { margin: 12px 0 -6px; }
.repasar-hoy .pupitrin { font-size: .9rem; padding: 10px 14px; margin: 0; }
.acciones { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.acciones .pupitrin, .acciones .adjunto { margin-top: 8px; }
.platos { margin: 6px 0 0; padding-left: 18px; }
.platos li { margin: 2px 0; }
.nutri { margin-top: 10px; }
.nutri-row { font-size: .9rem; }
.bar { height: 8px; border-radius: 999px; background: var(--bg); margin: 6px 0 4px; overflow: hidden; }
.bar span { display: block; height: 100%; background: var(--green); border-radius: 999px; }
.cena { margin-top: 12px; padding: 10px 12px; border-radius: 10px; background: var(--bg); }
.cena-title { font-weight: 700; cursor: pointer; }
.cena[open] .cena-title { margin-bottom: 4px; }
.cena ol { margin: 4px 0 6px; padding-left: 20px; }
.cena li { margin: 4px 0; }
.legal { font-size: .75rem; color: var(--muted); text-align: center; margin: 18px 8px; }
label.inline { display: flex; align-items: center; gap: 8px; font-size: .9rem; width: 100%; }
label.inline select { flex: 1; }
#cal-links { display: flex; flex-direction: column; gap: 8px; }
#cal-links .btn { text-align: center; text-decoration: none; }

/* ---------- Aspecto Pupitrín: amarillo sol, cantos 3D, letra Andika ---------- */
.logo { width: 46px; height: 46px; border-radius: 12px; vertical-align: middle; margin-right: 4px; }
.logo-sm { width: 30px; height: 30px; border-radius: 8px; vertical-align: middle; margin-right: 2px; }
.brand { display: flex; align-items: center; gap: 6px; }
.brand span, .brand-sm span { color: var(--primary); }
.btn {
  background: var(--marca); color: var(--marca-texto); border-radius: 14px;
  box-shadow: 0 4px 0 var(--marca-borde); transition: transform .08s, box-shadow .08s;
}
.btn:active { transform: translateY(4px); box-shadow: none; }
.btn.ghost { background: var(--surface); color: var(--primary); border: 0; box-shadow: 0 4px 0 var(--canto); }
.btn.danger { background: var(--surface); border: 0; box-shadow: 0 4px 0 var(--canto); }
.card { border-radius: var(--radius); box-shadow: 0 4px 0 var(--canto); border-left-width: 6px; }
.card.examen { box-shadow: 0 4px 0 #f3b9bb; }
.empty.small { box-shadow: 0 4px 0 var(--canto); }
.subject { letter-spacing: 0; }
.pupitrin {
  background: var(--marca); color: var(--marca-texto); box-shadow: 0 3px 0 var(--marca-borde);
}
.pupitrin:active { transform: translateY(3px); box-shadow: none; }
.repasar-hoy .pupitrin { width: 100%; justify-content: center; font-size: 1rem; }
.adjunto { box-shadow: 0 3px 0 var(--canto); background: var(--surface); border: 1px solid var(--border); }
.tabs button.on { color: var(--primary); }
.seg button.on { box-shadow: 0 3px 0 var(--canto); }
.badge.red { background: var(--red); }
.icon-btn { border-radius: 14px; box-shadow: 0 3px 0 var(--canto); border: 0; background: var(--surface); }
input, select { border-radius: 12px; }
.auth-card { box-shadow: 0 6px 0 var(--canto); }