/* Shared public-facing chrome for LearnFlow pages. */

:root {
  --lf-ink: #1a1a1a;
  --lf-muted: #666;
  --lf-border: #d4d2cc;
  --lf-paper: #fff;
  --lf-wash: #f7f6f3;
  --lf-background: #e8e8e6;
}

.site-page {
  min-height: 100vh;
  margin: 0;
  padding: 0 20px 40px;
  background: var(--lf-background);
  color: var(--lf-ink);
  font-family: Arial, Helvetica, sans-serif;
}

.site-header {
  width: min(100%, 900px);
  margin: 0 auto;
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-brand {
  color: var(--lf-ink);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
}

.site-nav a,
.site-footer a {
  color: #444;
  font-size: 13px;
  text-underline-offset: 3px;
}

.site-nav a:hover,
.site-footer a:hover {
  color: #000;
}

.site-main {
  width: min(100%, 900px);
  margin: 0 auto;
}

.landing-main { padding: 46px 0 18px; }

.landing-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(240px, .75fr);
  gap: 34px;
  padding: clamp(30px, 6vw, 68px);
  overflow: hidden;
}

.landing-copy h1 {
  max-width: 560px;
  margin: 0 0 18px;
  font-size: clamp(38px, 7vw, 68px);
  line-height: .98;
  letter-spacing: -.05em;
}

.landing-lede {
  max-width: 570px;
  margin: 0;
  color: #505050;
  font-size: 17px;
  line-height: 1.7;
}

.landing-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.landing-primary,
.landing-secondary { padding: 13px 17px; border-radius: 4px; font-size: 13px; font-weight: 800; text-decoration: none; }
.landing-primary { background: var(--lf-ink); color: #fff; }
.landing-primary:hover { background: #333; }
.landing-secondary { border: 1px solid #b9b7b1; color: var(--lf-ink); }
.landing-secondary:hover { background: #f4f3f0; }

.landing-panel { align-self: stretch; padding: 22px; background: #f4f3f0; border: 1px solid var(--lf-border); border-radius: 6px; }
.landing-panel-label { margin: 0 0 16px; color: #777; font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.landing-subjects { display: grid; gap: 9px; }
.landing-subjects span { padding: 12px 13px; background: #fff; border: 1px solid #ddd9d0; border-radius: 4px; font-size: 14px; font-weight: 700; }
.landing-panel-note { margin: 18px 0 0; color: #666; font-size: 12px; line-height: 1.6; }

.landing-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 16px; }
.landing-points article { display: grid; gap: 7px; padding: 20px; background: rgba(255,255,255,.58); border: 1px solid #d4d2cc; border-radius: 5px; }
.landing-points strong { font-size: 14px; }
.landing-points span { color: #666; font-size: 13px; line-height: 1.55; }

.site-card {
  background: var(--lf-paper);
  border: 1px solid #c8c8c8;
  border-radius: 7px;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
}

.site-footer {
  width: min(100%, 900px);
  margin: 28px auto 0;
  padding-top: 18px;
  border-top: 1px solid #c8c8c8;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  color: #777;
  font-size: 12px;
  line-height: 1.6;
}

.site-footer p { margin: 0; }

.site-footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 16px;
}

.eyebrow {
  margin: 0 0 10px;
  color: #777;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.purpose-strip {
  margin: 0 0 24px;
  padding: 16px 18px;
  background: #f4f3f0;
  border: 1px solid var(--lf-border);
  border-radius: 5px;
  color: #4e4e4e;
  font-size: 14px;
  line-height: 1.65;
  text-align: left;
}

.purpose-strip strong { color: var(--lf-ink); }

/* Login */
.login-card {
  max-width: 460px;
  margin: 28px auto 0;
  padding: clamp(28px, 6vw, 54px);
}

.login-card h1 {
  margin: 0 0 10px;
  font-size: clamp(29px, 6vw, 42px);
  line-height: 1.1;
}

.login-intro,
.login-help {
  color: var(--lf-muted);
  line-height: 1.65;
}

.login-intro { margin: 0 0 26px; font-size: 15px; }

.login-form { display: grid; gap: 16px; }

.login-field { display: grid; gap: 7px; }

.login-field label {
  color: #444;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.login-field input {
  width: 100%;
  padding: 13px 14px;
  background: #fff;
  border: 1.5px solid #bbb;
  border-radius: 4px;
  color: var(--lf-ink);
  font: inherit;
  font-size: 18px;
}

.login-field input:focus {
  border-color: var(--lf-ink);
  outline: 3px solid rgba(26, 26, 26, 0.12);
  outline-offset: 1px;
}

.login-field input#student-pin {
  letter-spacing: 0.32em;
  text-align: center;
}

.login-button {
  width: 100%;
  margin-top: 4px;
  padding: 13px 16px;
  background: var(--lf-ink);
  border: 1px solid var(--lf-ink);
  border-radius: 4px;
  color: #fff;
  cursor: pointer;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.login-button:hover { background: #333; }

.login-error {
  display: none;
  margin: 0;
  padding: 10px 12px;
  background: #fff3f1;
  border: 1px solid #e2aaa2;
  border-radius: 4px;
  color: #8b1d1d;
  font-size: 13px;
  line-height: 1.5;
}

.login-error.is-visible { display: block; }

.login-help {
  margin: 22px 0 0;
  font-size: 12px;
}

.pin-setup[hidden] { display: none; }
.pin-setup.is-visible { display: grid; }
.setup-heading { margin: 0; font-size: 20px; font-weight: 800; }
.setup-copy { margin: 0; }

/* Terms, privacy, and about */
.legal-card {
  max-width: 760px;
  margin: 28px auto 0;
  padding: clamp(28px, 6vw, 58px);
}

.legal-card h1 {
  margin: 0 0 8px;
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1.1;
}

.legal-updated {
  margin: 0 0 34px;
  color: #777;
  font-size: 12px;
}

.legal-card section + section { margin-top: 30px; }

.legal-card h2 {
  margin: 0 0 9px;
  font-size: 19px;
  line-height: 1.3;
}

.legal-card p,
.legal-card li {
  color: #424242;
  font-size: 15px;
  line-height: 1.75;
}

.legal-card p { margin: 0; }

.legal-card ul {
  margin: 10px 0 0;
  padding-left: 22px;
}

.legal-card li + li { margin-top: 7px; }

.notice {
  margin-top: 24px;
  padding: 14px 16px;
  background: #fffbea;
  border: 1px solid #e3cf7c;
  border-radius: 4px;
  color: #5f4c00;
  font-size: 13px;
  line-height: 1.6;
}

@media (max-width: 600px) {
  .site-page { padding-right: 12px; padding-left: 12px; }
  .site-header { align-items: flex-start; flex-direction: column; gap: 12px; }
  .site-nav { justify-content: flex-start; }
  .site-footer { flex-direction: column; }
  .site-footer-links { justify-content: flex-start; }
  .landing-main { padding-top: 22px; }
  .landing-hero { grid-template-columns: 1fr; gap: 24px; }
  .landing-points { grid-template-columns: 1fr; }
}