/* ICFESCoach landing — distinctive teal/orange palette, modern sans-serif.
   Deliberately not the cream/serif AI default, deliberately not Saber500's
   purple/orange. Mobile-first; scales up. */

:root {
  --teal-900: #134E4A;
  --teal-700: #0F766E;
  --teal-600: #0D9488;
  --teal-50:  #F0FDFA;
  --orange-500: #F97316;
  --orange-600: #EA580C;
  --bg:        #FAFAF9;
  --bg-warm:   #F5F5F4;
  --ink:       #0F172A;
  --ink-2:     #334155;
  --ink-3:     #64748B;
  --line:      #E2E8F0;
  --max-w: 1100px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ---- HEADER ---- */
.site-header {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: saturate(180%) blur(8px);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 18px; color: var(--ink);
  text-decoration: none; letter-spacing: -0.01em;
}
.logo { width: 28px; height: 28px; display: block; }
.launch-pill {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--teal-700); background: var(--teal-50);
  padding: 6px 12px; border-radius: 999px; border: 1px solid #CCFBF1;
}
.launch-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--teal-600);
  box-shadow: 0 0 0 0 rgba(13,148,136,0.6); animation: pulse 2s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(13,148,136,0.6); }
  70%  { box-shadow: 0 0 0 12px rgba(13,148,136,0); }
  100% { box-shadow: 0 0 0 0 rgba(13,148,136,0); }
}

/* ---- HERO ---- */
.hero {
  padding: 60px 0 48px;
  background:
    radial-gradient(ellipse 80% 60% at 80% 0%, rgba(15,118,110,0.08), transparent 60%),
    radial-gradient(ellipse 60% 40% at 10% 100%, rgba(249,115,22,0.06), transparent 60%),
    var(--bg);
}
.hero h1 {
  font-size: clamp(34px, 6vw, 60px);
  line-height: 1.05; letter-spacing: -0.025em; font-weight: 800;
  color: var(--ink); max-width: 780px;
}
.hero h1 .accent { color: var(--teal-700); }
.hero .lede {
  font-size: clamp(16px, 1.7vw, 19px); color: var(--ink-2);
  max-width: 620px; margin-top: 18px; line-height: 1.55;
}

/* ---- WAITLIST FORM ---- */
.waitlist-form {
  display: flex; flex-direction: column; gap: 10px;
  margin-top: 32px; max-width: 520px;
}
@media (min-width: 640px) {
  .waitlist-form {
    flex-direction: row; align-items: stretch;
  }
}
.waitlist-form input[type="email"] {
  flex: 1;
  padding: 16px 18px; font-size: 16px; line-height: 1.2;
  background: #fff; color: var(--ink);
  border: 2px solid var(--line); border-radius: 12px;
  font-family: inherit; transition: border-color 0.15s ease;
  -webkit-appearance: none;
}
.waitlist-form input[type="email"]:focus {
  outline: none; border-color: var(--teal-600);
}
.waitlist-form input[type="email"]::placeholder { color: #94A3B8; }
.waitlist-form button {
  padding: 16px 22px; font-size: 16px; font-weight: 700;
  background: var(--orange-500); color: #fff;
  border: 0; border-radius: 12px; cursor: pointer;
  font-family: inherit; transition: background 0.15s ease, transform 0.05s ease;
  white-space: nowrap;
}
.waitlist-form button:hover { background: var(--orange-600); }
.waitlist-form button:active { transform: translateY(1px); }
.waitlist-form button:disabled { background: #94A3B8; cursor: not-allowed; }

.form-msg {
  width: 100%; min-height: 22px;
  font-size: 14px; padding: 4px 4px 0;
}
.form-msg.success { color: var(--teal-700); font-weight: 600; }
.form-msg.error   { color: #DC2626; font-weight: 600; }

.micro {
  margin-top: 14px; color: var(--ink-3); font-size: 13px;
}

/* ---- FEATURES ---- */
.features {
  padding: 64px 0;
  background: var(--bg-warm);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.features .container {
  display: grid; gap: 20px;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) { .features .container { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .features .container { grid-template-columns: repeat(4, 1fr); } }

.feature {
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 24px; display: flex; flex-direction: column; gap: 10px;
}
.feature-icon { font-size: 28px; line-height: 1; }
.feature h3 {
  font-size: 17px; font-weight: 800; color: var(--ink); letter-spacing: -0.01em;
}
.feature p { color: var(--ink-2); font-size: 14.5px; line-height: 1.5; }

/* ---- UNIVERSITIES ---- */
.universities { padding: 72px 0; }
.universities h2 {
  font-size: clamp(26px, 3.4vw, 36px); font-weight: 800; color: var(--ink);
  letter-spacing: -0.02em;
}
.universities .section-sub {
  margin-top: 8px; color: var(--ink-2); font-size: 16px; max-width: 560px;
}
.uni-grid {
  margin-top: 28px; display: grid; gap: 12px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .uni-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .uni-grid { grid-template-columns: repeat(3, 1fr); } }

.uni-card {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 18px 20px; display: flex; flex-direction: column; gap: 4px;
}
.uni-card strong {
  font-size: 14.5px; font-weight: 800; color: var(--ink); letter-spacing: -0.01em;
}
.uni-card span {
  display: inline-block; font-size: 22px; font-weight: 800; color: var(--teal-700);
  line-height: 1.1;
}
.uni-card em {
  font-style: normal; font-size: 13px; color: var(--ink-3); font-weight: 500;
}
.uni-card-muted { background: var(--bg-warm); }
.uni-card-muted span { color: var(--ink-3); font-size: 16px; }

/* ---- CTA BAND ---- */
.cta-band {
  background: var(--teal-700); color: #fff; padding: 64px 0;
  text-align: center;
}
.cta-band h2 {
  font-size: clamp(24px, 3vw, 32px); font-weight: 800; letter-spacing: -0.02em;
}
.cta-band p { color: #CCFBF1; margin-top: 8px; max-width: 480px; margin-inline: auto; }
.btn-secondary {
  display: inline-block; margin-top: 24px;
  background: #fff; color: var(--teal-700);
  padding: 14px 28px; font-size: 16px; font-weight: 700;
  text-decoration: none; border-radius: 12px;
  transition: transform 0.05s ease;
}
.btn-secondary:hover { transform: translateY(-1px); }

/* ---- FOOTER ---- */
.site-footer {
  background: var(--bg-warm); border-top: 1px solid var(--line);
  padding: 32px 0; color: var(--ink-3); font-size: 14px;
}
.site-footer .container {
  display: flex; flex-direction: column; gap: 6px; align-items: center; text-align: center;
}
@media (min-width: 640px) {
  .site-footer .container { flex-direction: row; justify-content: space-between; }
}
.site-footer a { color: var(--teal-700); text-decoration: none; font-weight: 600; }
.site-footer a:hover { text-decoration: underline; }