/* Copied from the EduStars app (wannapon-dev frontend/src/styles.css): the public landing + register-of-interest styles. */
body { font-family: Arial, sans-serif; margin: 0; background: #f7f7f8; }
:root {
  --taico-navy: #1c1e9a;
  --field-base: #141654;
  --field-ink: #e9e7f4;
  --field-ink-soft: rgba(233, 231, 244, 0.76);
  --field-accent: #a7aeff;
  --field-line: rgba(255, 255, 255, 0.14);
  --field-wrap: 1080px;
}

/* --- the white brand strip ------------------------------------------------ */
.site-strip { position: relative; z-index: 3; background: #fff; box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06); }
.site-strip-inner {
  max-width: var(--field-wrap);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 40px);
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.site-brand { display: inline-flex; align-items: center; gap: 14px; min-width: 0; }
.site-brand img { display: block; width: auto; }
.site-brand-ucl, .site-brand-taico { height: 25px; }
.site-brand-eu { height: 21px; }
.site-brand-sep { width: 1px; height: 21px; background: #ded8e8; flex: none; }
.site-strip-action {
  flex: none;
  white-space: nowrap;
  background: transparent;
  border: 1px solid #c9c3da;
  border-radius: 8px;
  padding: 8px 18px;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  color: #262a6e;
  cursor: pointer;
}
.site-strip-action:hover { border-color: #3a3dd6; color: #3a3dd6; }
.site-strip-link {
  flex: none;
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  font-size: 0.86rem;
  color: #6b647c;
  cursor: pointer;
}
.site-strip-link:hover { color: #3a3dd6; text-decoration: underline; }

/* --- the field ------------------------------------------------------------ */
.landing { min-height: 100vh; display: flex; flex-direction: column; }
.landing-field {
  position: relative;
  flex: 1;
  overflow: hidden;
  background: var(--field-base);
  color: var(--field-ink);
  padding-bottom: 40px;
}
.landing-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 620px at 92% 6%, rgba(116, 62, 196, 0.8), transparent 64%),
    radial-gradient(760px 560px at 4% 36%, rgba(44, 48, 160, 0.72), transparent 62%),
    radial-gradient(1100px 460px at 50% 112%, rgba(86, 54, 176, 0.55), transparent 68%);
}
.landing-wrap {
  position: relative;
  z-index: 2;
  max-width: var(--field-wrap);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 40px);
}
.landing-notice {
  margin: 20px 0 0;
  background: rgba(255, 255, 255, 0.14);
  border-radius: 10px;
  padding: 10px 14px;
}
.landing-main { display: grid; gap: clamp(22px, 4vw, 38px); }
.landing-main--form { max-width: 820px; margin: 0 auto; padding-top: 38px; }

/* First screen: hero and the hosting column carry equal weight. */
.landing-top {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(22px, 4vw, 50px);
  align-items: center;
  padding: clamp(36px, 6vw, 66px) 0 0;
}
.landing-side { display: grid; gap: 18px; }
.landing-eyebrow {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--field-accent);
}
.landing-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(1.9rem, 3.6vw, 2.85rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: #fff;
}
.landing-lede {
  margin: 0 0 28px;
  font-size: 1.02rem;
  line-height: 1.62;
  color: var(--field-ink-soft);
  max-width: 52ch;
}
.landing-cta { display: flex; flex-direction: column; gap: 14px; align-items: flex-start; }
.landing-primary {
  background: linear-gradient(135deg, #3a3dd6 0%, #7a3fd0 100%);
  color: #fff;
  border: 0;
  border-radius: 10px;
  padding: 15px 32px;
  font: inherit;
  font-size: 1.02rem;
  font-weight: 650;
  cursor: pointer;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.18), 0 14px 40px rgba(74, 60, 214, 0.5);
}
.landing-primary:hover { filter: brightness(1.12); }
.landing-primary:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }
.landing-cta-note { font-size: 0.86rem; line-height: 1.55; color: rgba(233, 231, 244, 0.62); max-width: 48ch; }
.landing-signin-secondary { margin: 22px 0 0; font-size: 0.9rem; color: rgba(233, 231, 244, 0.64); }
.landing-link {
  background: none; border: 0; padding: 0; font: inherit;
  color: #fff; font-weight: 600; text-decoration: underline; cursor: pointer;
}

/* --- glass panels --------------------------------------------------------- */
.landing-panel, .landing-more {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--field-line);
  border-radius: 16px;
  padding: clamp(20px, 2.6vw, 28px);
  backdrop-filter: blur(14px);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.32);
}
.landing-panel h2, .landing-more h2 { margin: 0 0 18px; font-size: 1rem; color: #fff; }
.landing-more h2 { margin-bottom: 8px; }
.landing-inv { display: grid; gap: 15px; }
.landing-inv > div { padding-left: 16px; border-left: 1px solid rgba(167, 174, 255, 0.34); }
.landing-inv h3 {
  margin: 0 0 4px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--field-accent);
}
.landing-inv p { margin: 0; font-size: 0.86rem; line-height: 1.55; color: var(--field-ink-soft); }
.landing-more p { margin: 0; font-size: 0.88rem; line-height: 1.55; color: var(--field-ink-soft); }
.landing-flyers { margin: 10px 0 0 !important; font-weight: 600; }
.landing-flyers a { color: var(--field-accent); }
.landing-flyers .sep { color: rgba(233, 231, 244, 0.4); }
.landing-protocol { margin: 10px 0 0 !important; font-size: 0.82rem !important; color: rgba(233, 231, 244, 0.6) !important; }
.landing-protocol a { color: var(--field-accent); }

/* --- why this matters ----------------------------------------------------- */
.landing-why {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(18px, 3vw, 36px);
  padding: clamp(26px, 4vw, 42px) 0 0;
  border-top: 1px solid var(--field-line);
  margin-top: clamp(10px, 2vw, 22px);
}
.landing-why h3 {
  margin: 0 0 8px;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--field-accent);
}
.landing-why p { margin: 0; font-size: 0.88rem; line-height: 1.62; color: var(--field-ink-soft); }
/* A short lead carries the point for a skimmer; the detail sits quieter
   beneath it for whoever wants it. */
.landing-why-lead {
  font-size: 1.02rem !important;
  line-height: 1.45 !important;
  font-weight: 600;
  color: #fff !important;
  letter-spacing: -0.005em;
  margin-bottom: 9px !important;
}
.landing-why-detail { font-size: 0.84rem !important; color: rgba(233, 231, 244, 0.62) !important; }
/* Signals that the link downloads a document. */
.landing-doc-ic { vertical-align: -3px; margin-right: 5px; color: var(--field-accent); }

/* --- footer --------------------------------------------------------------- */
.landing-footer {
  margin-top: clamp(30px, 5vw, 50px);
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.82rem;
  color: rgba(233, 231, 244, 0.66);
  display: grid;
  gap: 8px;
}
.landing-footer a { color: rgba(233, 231, 244, 0.88); }
.landing-contacts strong { font-weight: 700; color: #fff; }
.landing-links { display: flex; gap: 10px; flex-wrap: wrap; }
.landing-links a { text-decoration: none; }
.landing-links a:hover { text-decoration: underline; }
.landing-links .sep { color: rgba(255, 255, 255, 0.35); }
.landing-funding { margin: 0; font-size: 0.72rem; line-height: 1.5; color: rgba(233, 231, 244, 0.42); }

@media (max-width: 900px) {
  .landing-top { grid-template-columns: 1fr; align-items: start; }
  .landing-why { grid-template-columns: 1fr; gap: 20px; }
}
/* Keep the marks and the action on one row on a phone: the strip's logos
   shrink rather than pushing the button onto a line of its own. */
@media (max-width: 560px) {
  .site-strip-inner { min-height: 54px; gap: 10px; }
  .site-brand { gap: 9px; }
  .site-brand-ucl, .site-brand-taico { height: 18px; }
  .site-brand-eu { height: 15px; }
  .site-brand-sep { height: 15px; }
  .site-strip-action { padding: 7px 13px; font-size: 0.84rem; }
}
@media (max-width: 560px) {
  .site-strip-link { font-size: 0.78rem; }
}
@media (max-width: 380px) {
  .site-brand { gap: 7px; }
  .site-brand-ucl, .site-brand-taico { height: 15px; }
  .site-brand-eu { height: 13px; }
  .site-strip-action { padding: 6px 11px; font-size: 0.78rem; }
}

.interest-form, .interest-done {
  background: #fff;
  color: #1f2937;
  border-radius: 16px;
  padding: clamp(22px, 3vw, 34px);
  box-shadow: 0 24px 60px rgba(20, 0, 40, 0.35);
}
.interest-form h2, .interest-done h2 { margin: 0 0 8px; color: #361a54; font-size: 1.4rem; }
.interest-intro { margin: 0 0 20px; font-size: 0.94rem; line-height: 1.55; color: #4b5563; }
.interest-form fieldset {
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 16px 18px 18px;
  margin: 0 0 16px;
}
.interest-form legend {
  padding: 0 8px;
  font-weight: 700;
  font-size: 0.86rem;
  color: #500778;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.interest-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 640px) { .interest-grid { grid-template-columns: 1fr; } }
.interest-form label {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  color: #374151;
  margin-bottom: 12px;
}
.interest-form fieldset label:last-child { margin-bottom: 0; }
.interest-form input,
.interest-form select,
.interest-form textarea {
  display: block;
  width: 100%;
  box-sizing: border-box;
  margin-top: 5px;
  padding: 9px 11px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font: inherit;
  font-weight: 400;
  color: #111827;
}
.interest-form input:focus,
.interest-form select:focus,
.interest-form textarea:focus { outline: 2px solid #993bff; outline-offset: 1px; }
.interest-note { margin: 0 0 14px; font-size: 0.84rem; color: #6b7280; line-height: 1.5; }
.interest-disclosure {
  background: none;
  border: 0;
  padding: 0 0 16px;
  font: inherit;
  font-weight: 600;
  color: #500778;
  cursor: pointer;
}
.interest-disclosure:hover { text-decoration: underline; }
/* Off-screen rather than display:none — bots read the DOM, not the paint. */
.interest-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.interest-error {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 8px;
  background: #fef2f2;
  color: #b91c1c;
  font-size: 0.9rem;
}
.interest-actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.interest-actions button[type="submit"] {
  background: #1c1e9a;
  color: #fff;
  border: 0;
  border-radius: 10px;
  padding: 12px 26px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
.interest-actions button[type="submit"]:disabled { background: #b9bad9; cursor: not-allowed; }
.interest-secondary {
  background: none;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  padding: 11px 20px;
  font: inherit;
  color: #374151;
  cursor: pointer;
}
.interest-privacy { margin: 16px 0 0; font-size: 0.82rem; color: #6b7280; }
.interest-done p { font-size: 0.95rem; line-height: 1.6; }
.interest-done-contact { color: #4b5563; }

/* --- Main-domain additions (not in the EduStars app) ----------------------
   No sign-in here: the flyer is the secondary action, beside the primary. */
.landing-cta { flex-direction: row; flex-wrap: wrap; align-items: center; }
.landing-secondary {
  display: inline-block;
  padding: 14px 26px;
  border: 1px solid rgba(233, 231, 244, 0.42);
  border-radius: 10px;
  color: var(--field-ink);
  font-size: 1.02rem;
  font-weight: 600;
  text-decoration: none;
}
.landing-secondary:hover { border-color: var(--field-accent); color: #fff; }
.landing-secondary:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }
[hidden] { display: none !important; }