/* tutors.kerryback.com.  Colors and type follow the tutors' page (engine/static/index.html). */
:root {
  --bg: #f6f5f2; --panel: #ffffff; --ink: #1d232b; --muted: #66707c;
  --line: #d9dde2; --accent: #00205B; --accent-ink: #ffffff; --err: #b4532a; --ok: #2e7d4f;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #15181c; --panel: #1e2328; --ink: #e6e9ec; --muted: #9aa4af;
    --line: #353c44; --accent: #6f9fd0; --accent-ink: #0d1116; --err: #e08a62; --ok: #6cc191; }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; min-height: 100%; }
body { background: var(--bg); color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); }
button { font: inherit; cursor: pointer; border-radius: 8px; border: 1px solid var(--line);
  background: var(--panel); color: var(--ink); padding: 6px 12px; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button:disabled { opacity: .5; cursor: default; }
input { font: inherit; width: 100%; padding: 8px 10px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--bg); color: var(--ink); }

/* The sign-in pages: the aerial view of McNair Hall behind a card */
body.aerial { min-height: 100vh; padding: 12vh 16px 32px;
  background: linear-gradient(rgba(0,32,91,.55), rgba(0,32,91,.30)), url("rb-aerial.jpg") center / cover no-repeat fixed; }
.card { margin: 0 auto; width: min(380px, 100%); background: var(--panel); border-radius: 12px;
  padding: 24px; box-shadow: 0 10px 30px rgba(0,0,0,.30); }
.card h1 { margin: 0 0 4px; font-size: 20px; color: var(--accent); }
.card p { margin: 0 0 12px; color: var(--muted); font-size: 14px; }
.card label { display: block; font-size: 14px; margin: 12px 0 4px; }
.card button { margin-top: 16px; width: 100%; }
.card .link { display: block; text-align: center; margin-top: 12px; font-size: 14px; }
.card .new { border-top: 1px solid var(--line); margin-top: 18px; padding-top: 14px;
  text-align: center; font-size: 14px; color: var(--muted); }
.card .new button { margin-top: 8px; }
.card h2 { font-size: 15px; margin: 18px 0 0; }
.msg { font-size: 14px; min-height: 20px; margin-top: 10px; color: var(--err); }
.msg.ok { color: var(--ok); }

/* The landing page */
.who { display: flex; justify-content: flex-end; align-items: center; gap: 12px;
  padding: 12px 16px 0; color: var(--muted); font-size: 14px; }
.landing { max-width: 760px; margin: 0 auto; padding: 24px 16px 32px; }
/* McNair and Virani Halls, half the page width (the full width on a phone) */
.landing .hero { display: block; width: 50vw; max-width: 100%; height: auto; margin: 0 auto 20px; border-radius: 10px; }
.landing h1 { font: 600 30px Georgia, "Times New Roman", serif; color: var(--accent);
  text-align: center; margin: 0 0 4px; }
.landing .sub { text-align: center; color: var(--muted); margin: 0 0 28px; }
.tutor { display: flex; align-items: center; gap: 22px; padding: 16px 0; border-top: 1px solid var(--line); }
.tutor:last-child { border-bottom: 1px solid var(--line); }
.thumb { flex: 0 0 170px; height: 120px; background: #fff; border: 1px solid var(--line); border-radius: 8px;
  display: flex; align-items: center; justify-content: center; }
.thumb img { width: 150px; height: 100px; }
.tutor a { font: 600 20px Georgia, "Times New Roman", serif; text-decoration: none; }
.tutor a:hover { text-decoration: underline; }
.tutor .d { color: var(--muted); font-size: 14px; margin-top: 2px; }
.footer { text-align: center; padding: 32px 0 8px; }
/* The image has a white background: multiply lets the page color through */
.footer img { width: 420px; max-width: 100%; height: auto; mix-blend-mode: multiply; }
@media (prefers-color-scheme: dark) {
  .footer img { filter: invert(1) hue-rotate(180deg); mix-blend-mode: screen; }
}
@media (max-width: 520px) {
  .landing .hero { width: 100%; }
  .tutor { gap: 14px; }
  .thumb { flex-basis: 110px; height: 80px; }
  .thumb img { width: 100px; height: 67px; }
  .tutor a { font-size: 18px; }
}