/* Brand base for the log-in page, student portal and admin panel. */
:root {
  --indigo-900: #0b0a24; --indigo-800: #140f3a; --indigo-700: #2a1f7a; --violet: #4b3bd6; --violet-2: #6c5ce7; --violet-soft: #eeebff;
  --gold: #ffc53d; --gold-2: #ffa51a; --ink: #17153b; --muted: #5d5a7a; --line: #e9e6f8; --bg: #f6f5ff; --white: #fff;
  --green: #15803d; --green-soft: #e6f6ec; --red: #b42346; --red-soft: #fdecf0; --amber-soft: #fff6df;
  --radius: 14px; --shadow: 0 1px 2px rgba(23, 21, 59, .06), 0 8px 24px rgba(23, 21, 59, .06);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; color: var(--ink);
  --font-head: Sora, Inter, system-ui, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); line-height: 1.5; }
a { color: var(--violet); }
button, input, select, textarea { font: inherit; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }
.muted { color: var(--muted); }
h1, h2, h3 { line-height: 1.25; letter-spacing: -.015em; font-family: var(--font-head); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 18px; border-radius: 10px;
  border: 1px solid var(--line); background: #fff; color: var(--ink); font-weight: 600; cursor: pointer; text-decoration: none; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--violet); border-color: var(--violet); color: #fff; }
.btn-primary:hover:not(:disabled) { background: #3d2fc0; }
.btn-gold { background: linear-gradient(135deg, #ffe08a, #ffc53d 45%, #ffa51a); border-color: #f0b12a; color: var(--indigo-800); }
.btn-block { width: 100%; }
.btn-link { background: none; border: 0; color: var(--violet); padding: 6px 0; min-height: auto; font-weight: 600; cursor: pointer; }

.field { display: grid; gap: 6px; margin: 0 0 14px; }
.field label { font-weight: 600; font-size: .92rem; }
.field input, .field select, .field textarea { min-height: 46px; padding: 10px 12px; border: 1px solid #d6d2ee; border-radius: 10px; background: #fff; color: var(--ink); width: 100%; }
.field input:focus { border-color: var(--violet); outline: none; box-shadow: 0 0 0 3px rgba(75, 59, 214, .18); }
.hint { font-size: .85rem; color: var(--muted); }
.alert { padding: 10px 12px; border-radius: 10px; margin: 0 0 14px; font-size: .92rem; }
.alert-err { background: var(--red-soft); color: #7c1630; border: 1px solid #f3c3cf; }
.alert-ok { background: var(--green-soft); color: #0f5e2c; border: 1px solid #bfe5cb; }

/* log-in page */
.auth-body { min-height: 100vh; background: radial-gradient(900px 500px at 85% -10%, rgba(108, 92, 231, .35), transparent 60%),
  linear-gradient(160deg, var(--indigo-900), var(--indigo-800) 55%, var(--indigo-700)); display: grid; place-items: center; padding: 20px; }
.auth-wrap { width: 100%; max-width: 440px; }
.auth-card { background: #fff; border-radius: 20px; padding: 28px 26px; box-shadow: 0 30px 80px rgba(5, 3, 30, .45); }
.auth-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.auth-mark { width: 44px; height: 44px; border-radius: 12px; background: linear-gradient(135deg, var(--violet), var(--violet-2)); display: grid; place-items: center; color: #fff; font-weight: 800; }
.auth-brand b { display: block; font-size: 1.05rem; } .auth-brand small { color: var(--muted); }
.auth-card h1 { font-size: 1.35rem; margin: 0 0 4px; }
.auth-tabs { display: grid; grid-template-columns: 1fr 1fr; background: var(--bg); border-radius: 12px; padding: 4px; margin: 16px 0; }
.auth-tabs button { border: 0; background: none; padding: 9px; border-radius: 9px; font-weight: 600; color: var(--muted); cursor: pointer; min-height: 40px; }
.auth-tabs button.on { background: #fff; color: var(--ink); box-shadow: var(--shadow); }
.auth-foot { text-align: center; color: #cfc9ee; font-size: .85rem; margin-top: 16px; }
.otp-input { letter-spacing: .5em; font-size: 1.3rem; text-align: center; font-variant-numeric: tabular-nums; }
.qr { display: grid; place-items: center; padding: 10px; background: #fff; border: 1px solid var(--line); border-radius: 12px; margin: 10px 0; }
code.secret { display: block; word-break: break-all; background: var(--bg); padding: 8px 10px; border-radius: 8px; font-size: .85rem; }

/* Log-in and free-account page (shared/login.js), inside the website's header and footer */
.au-page { background: radial-gradient(800px 420px at 100% 0, rgba(108, 92, 231, .12), transparent 60%), var(--bg); padding: 40px 20px 64px; }
.au-app { max-width: 1080px; margin: 0 auto; min-height: 72vh; display: flow-root; }   /* room for the form while it loads, so the footer does not jump; flow-root: the "Loading…" line's margin stays inside */
.au-grid { display: grid; grid-template-columns: minmax(0, 480px) minmax(0, 1fr); gap: 32px; align-items: start; }
.au-solo { grid-template-columns: minmax(0, 480px); justify-content: center; }
.au-card { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 26px 26px 20px; box-shadow: 0 20px 50px rgba(23, 21, 59, .08); }
.au-tabs { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--line); margin: -6px -6px 20px; }
.au-tabs button { border: 0; background: none; padding: 12px 8px 13px; font-weight: 700; font-size: 1rem; color: var(--muted); cursor: pointer; border-bottom: 3px solid transparent; margin-bottom: -1px; font-family: var(--font-head); }
.au-tabs button.on { color: var(--violet); border-bottom-color: var(--violet); }
.au-h { font-size: 1.4rem; margin: 0 0 4px; }
.au-sub { margin: 0 0 16px; font-size: .95rem; }
.au-go { margin-top: 6px; min-height: 48px; font-size: 1rem; }
.au-alt { text-align: center; margin: 12px 0 0; }
.au-switch { text-align: center; margin: 14px 0 0; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: .95rem; }
.au-help { text-align: center; color: var(--muted); font-size: .88rem; margin: 16px 0 0; }
.au-help a, .au-check a { padding-block: 14px; }   /* inline links: a finger-sized tap area without moving the text */
.au-body .btn-link { display: inline-flex; align-items: center; min-height: 44px; }
.au-note { background: #eef3ff; border: 1px solid #cdd9ff; color: #243a7a; }
.au-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
.au-more { margin: 0 0 14px; border: 1px dashed #d6d2ee; border-radius: 12px; padding: 10px 12px 0; }
.au-more summary { cursor: pointer; font-weight: 600; color: var(--violet); padding-bottom: 10px; min-height: 44px; }
.au-check { display: flex; gap: 10px; align-items: flex-start; font-size: .88rem; color: var(--muted); margin: 4px 0 12px; line-height: 1.45; }
.au-check input { width: 24px; height: 24px; margin: 0; flex: none; accent-color: var(--violet); }
.au-hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.au-contact { display: flex; gap: 10px; flex-wrap: wrap; }
.pw-wrap { position: relative; }
.pw-wrap input { padding-right: 64px; }
.pw-eye { position: absolute; right: 2px; top: 50%; transform: translateY(-50%); border: 0; background: none; color: var(--violet); font-weight: 600; font-size: .85rem; padding: 8px; min-height: 44px; min-width: 52px; cursor: pointer; }
.au-side { color: #fff; border-radius: 20px; padding: 34px 32px; background: radial-gradient(600px 300px at 90% -10%, rgba(255, 197, 61, .18), transparent 60%),
  linear-gradient(155deg, var(--indigo-900), var(--indigo-800) 55%, var(--indigo-700)); box-shadow: 0 20px 50px rgba(23, 21, 59, .18); }
.au-eyebrow { display: inline-block; margin: 0 0 12px; color: var(--gold); font-weight: 700; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; }
.au-side h1 { font-size: 1.9rem; margin: 0 0 18px; color: #fff; }
.au-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.au-list li { padding: 14px 16px 14px 48px; border-radius: 14px; background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .1); position: relative; }
.au-list li::before { content: ""; position: absolute; left: 16px; top: 17px; width: 18px; height: 18px; border-radius: 50%;
  background: var(--gold) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23140f3a' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7'/%3E%3C/svg%3E") center/12px no-repeat; }
.au-list b { display: block; font-size: 1rem; margin-bottom: 2px; }
.au-list span { color: #d4cff3; font-size: .92rem; line-height: 1.5; }
@media (max-width: 900px) {
  .au-page { padding: 18px 14px 40px; }
  .au-grid { grid-template-columns: 1fr; gap: 18px; }
  .au-card { padding: 20px 18px 18px; }
  .au-side { padding: 24px 20px; }
  .au-side h1 { font-size: 1.45rem; }
}
@media (max-width: 480px) { .au-2 { grid-template-columns: 1fr; } }