/* Illuminest AI Website Mockup */

:root {
  --bg: #f7fbff;
  --bg-soft: #eef7ff;
  --text: #07113d;
  --muted: #61708a;
  --navy: #071454;
  --indigo: #101b6d;
  --cyan: #19d4d0;
  --blue: #1389e8;
  --gold: #f2b84b;
  --white: #ffffff;
  --border: rgba(7, 20, 84, 0.11);
  --shadow: 0 24px 70px rgba(8, 23, 71, 0.13);
  --radius: 26px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(25, 212, 208, 0.18), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 38%, #ffffff 100%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
.container { width: min(1180px, 92%); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 850;
  letter-spacing: -0.04em;
  font-size: 24px;
}

.brand-logo {
  width: 46px;
  height: 46px;
  object-fit: contain;
  border-radius: 0;
  box-shadow: none;
}

.brand-text strong { color: var(--cyan); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  color: #233052;
  font-weight: 650;
  font-size: 15px;
}

.nav-cta {
  padding: 12px 18px;
  background: linear-gradient(135deg, var(--navy), var(--blue));
  color: var(--white);
  border-radius: 999px;
  box-shadow: 0 14px 30px rgba(19, 137, 232, 0.22);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 42px;
  height: 42px;
  padding: 9px;
}

.nav-toggle span {
  display: block;
  height: 3px;
  background: var(--navy);
  margin: 5px 0;
  border-radius: 99px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 92px 0 72px;
}

.hero-glow {
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 999px;
  filter: blur(28px);
  opacity: 0.28;
  pointer-events: none;
}

.hero-glow-one { background: var(--cyan); top: 4%; left: -110px; }
.hero-glow-two { background: var(--gold); bottom: 0; right: -120px; }

.hero-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.eyebrow {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: var(--blue);
  background: rgba(19, 137, 232, 0.09);
  padding: 8px 13px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1, h2, h3, h4, p { margin-top: 0; }

h1 {
  font-size: clamp(46px, 7vw, 78px);
  line-height: 0.94;
  letter-spacing: -0.075em;
  margin: 20px 0 22px;
  color: var(--navy);
}

.hero-subtitle {
  font-size: 20px;
  line-height: 1.65;
  color: var(--muted);
  max-width: 660px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 32px 0 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  border-radius: 999px;
  padding: 0 22px;
  font-weight: 800;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--navy), var(--blue) 60%, var(--cyan));
  box-shadow: 0 18px 38px rgba(19, 137, 232, 0.25);
}

.btn-secondary {
  color: var(--navy);
  background: rgba(255, 255, 255, 0.76);
  border-color: var(--border);
  box-shadow: 0 10px 26px rgba(8, 23, 71, 0.08);
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-weight: 700;
}

.hero-points span {
  background: rgba(255,255,255,0.72);
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: 999px;
}

.app-shell {
  display: grid;
  grid-template-columns: 132px 1fr;
  min-height: 560px;
  background: rgba(255,255,255,0.78);
  border: 1px solid rgba(255,255,255,0.9);
  border-radius: 34px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.app-sidebar {
  background: linear-gradient(180deg, var(--navy), #0a1d72);
  color: rgba(255,255,255,0.76);
  padding: 24px 16px;
}

.app-sidebar a {
  display: block;
  padding: 12px 10px;
  border-radius: 14px;
  margin: 7px 0;
  font-weight: 750;
  font-size: 14px;
}

.app-sidebar a.active { background: rgba(255,255,255,0.14); color: white; }

.app-dot {
  width: 34px;
  height: 34px;
  background: radial-gradient(circle, var(--gold), var(--cyan));
  border-radius: 50%;
  margin-bottom: 24px;
  box-shadow: 0 0 22px rgba(242, 184, 75, 0.75);
}

.app-main {
  padding: 28px;
  background:
    radial-gradient(circle at 90% 0%, rgba(25, 212, 208, 0.16), transparent 30%),
    #fbfdff;
}

.app-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.app-topbar small {
  color: var(--muted);
  font-weight: 750;
}

.app-topbar h3 {
  margin: 4px 0 0;
  letter-spacing: -0.04em;
}

.app-topbar button,
.prompt-toolbar button {
  border: 0;
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  border-radius: 999px;
  padding: 12px 16px;
  font-weight: 800;
}

.quick-recall {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 26px 0;
  background: white;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 14px 16px;
  box-shadow: 0 12px 34px rgba(8, 23, 71, 0.07);
}

.quick-recall span {
  color: var(--blue);
  font-size: 24px;
}

.quick-recall input {
  width: 100%;
  border: 0;
  outline: 0;
  color: var(--navy);
  font-size: 16px;
  font-weight: 700;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.knowledge-card {
  min-height: 170px;
  background: white;
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 20px;
  box-shadow: 0 14px 34px rgba(8, 23, 71, 0.07);
}

.featured-card {
  grid-column: span 2;
  color: white;
  background:
    radial-gradient(circle at right top, rgba(25, 212, 208, 0.36), transparent 40%),
    linear-gradient(135deg, var(--navy), #0d2d94);
}

.card-kicker {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--blue);
  font-weight: 900;
  margin-bottom: 8px;
}

.featured-card .card-kicker { color: var(--gold); }

.knowledge-card h4 {
  margin-bottom: 8px;
  font-size: 20px;
  letter-spacing: -0.04em;
}

.knowledge-card p { color: var(--muted); line-height: 1.55; }
.featured-card p { color: rgba(255,255,255,0.72); }

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.chip-row span {
  background: rgba(19, 137, 232, 0.1);
  color: var(--blue);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
}

.featured-card .chip-row span {
  color: white;
  background: rgba(255,255,255,0.15);
}

.trust-strip { padding: 20px 0; }

.strip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 18px 40px rgba(8, 23, 71, 0.08);
  overflow: hidden;
}

.strip-grid div {
  padding: 24px;
  border-right: 1px solid var(--border);
}

.strip-grid div:last-child { border-right: 0; }
.strip-grid strong { display: block; font-size: 20px; color: var(--navy); margin-bottom: 5px; }
.strip-grid span { color: var(--muted); }

.section { padding: 86px 0; }

.section-heading {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 46px;
}

.section h2 {
  color: var(--navy);
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1;
  letter-spacing: -0.06em;
  margin: 18px 0;
}

.section p {
  color: var(--muted);
  line-height: 1.7;
  font-size: 17px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature-card {
  padding: 28px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 18px 42px rgba(8, 23, 71, 0.07);
}

.icon {
  width: 48px;
  height: 48px;
  border-radius: 17px;
  display: grid;
  place-items: center;
  color: white;
  font-size: 22px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  margin-bottom: 18px;
}

.feature-card h3 {
  font-size: 22px;
  color: var(--navy);
  letter-spacing: -0.04em;
}

.recall-section {
  background:
    radial-gradient(circle at left, rgba(25,212,208,0.14), transparent 34%),
    linear-gradient(180deg, #f8fbff, #eef7ff);
}

.recall-grid,
.prompt-grid,
.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 54px;
  align-items: center;
}

.check-list {
  padding: 0;
  list-style: none;
  margin: 28px 0 0;
}

.check-list li {
  padding: 14px 0 14px 34px;
  position: relative;
  color: #31405d;
  border-bottom: 1px solid var(--border);
  font-weight: 650;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--blue);
  font-weight: 950;
}

.phone-preview { display: flex; justify-content: center; }

.phone-frame {
  width: 320px;
  min-height: 620px;
  border-radius: 42px;
  padding: 14px;
  background: #07113d;
  box-shadow: 0 36px 80px rgba(7, 17, 61, 0.26);
}

.phone-top {
  width: 94px;
  height: 9px;
  border-radius: 99px;
  background: rgba(255,255,255,0.22);
  margin: 6px auto 14px;
}

.phone-screen {
  min-height: 570px;
  background:
    radial-gradient(circle at top right, rgba(25,212,208,0.2), transparent 32%),
    #f9fcff;
  border-radius: 30px;
  padding: 22px 16px;
  position: relative;
  overflow: hidden;
}

.mobile-title {
  font-size: 24px;
  font-weight: 900;
  color: var(--navy);
  margin: 12px 0;
}

.mobile-search {
  background: white;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
  color: var(--muted);
  font-weight: 750;
  margin-bottom: 14px;
}

.mobile-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 16px;
  margin-bottom: 14px;
  box-shadow: 0 12px 28px rgba(8, 23, 71, 0.07);
}

.mobile-card span {
  color: var(--blue);
  font-size: 12px;
  text-transform: uppercase;
  font-weight: 900;
}

.mobile-card h4 {
  margin: 7px 0;
  color: var(--navy);
}

.mobile-card p {
  font-size: 13px;
  line-height: 1.5;
}

.bottom-nav {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 14px;
  height: 58px;
  border-radius: 22px;
  background: white;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  align-items: center;
  text-align: center;
  box-shadow: 0 12px 28px rgba(8, 23, 71, 0.13);
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
}

.bottom-nav b {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  margin: 0 auto;
  color: white;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  font-size: 24px;
}

.prompt-board {
  background:
    radial-gradient(circle at right top, rgba(25,212,208,0.15), transparent 30%),
    white;
  border: 1px solid var(--border);
  border-radius: 34px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.prompt-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.prompt-toolbar strong {
  font-size: 22px;
  color: var(--navy);
  letter-spacing: -0.04em;
}

.prompt-item {
  background: #f8fbff;
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 18px;
  margin: 12px 0;
}

.prompt-item span,
.article-list span {
  color: var(--blue);
  font-size: 12px;
  text-transform: uppercase;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.prompt-item h4 {
  margin: 7px 0;
  color: var(--navy);
  letter-spacing: -0.03em;
}

.pricing-section { background: #fbfdff; }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 420px));
  gap: 20px;
  justify-content: center;
}

.price-card {
  position: relative;
  background: white;
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 34px;
  box-shadow: 0 16px 44px rgba(8, 23, 71, 0.08);
}

.price-card.premium {
  background:
    radial-gradient(circle at top right, rgba(25,212,208,0.18), transparent 35%),
    linear-gradient(135deg, var(--navy), #0b2d94);
  color: white;
}

.price-card h3 {
  font-size: 26px;
  letter-spacing: -0.04em;
}

.price {
  font-size: 44px !important;
  font-weight: 950;
  color: inherit !important;
  margin-bottom: 18px;
}

.price-card ul {
  padding-left: 20px;
  line-height: 2;
  color: var(--muted);
}

.price-card.premium ul { color: rgba(255,255,255,0.75); }

.badge {
  position: absolute;
  right: 24px;
  top: 24px;
  background: var(--gold);
  color: var(--navy);
  font-weight: 900;
  padding: 7px 10px;
  border-radius: 999px;
  font-size: 12px;
}

.article-list { display: grid; gap: 14px; }

.article-list article {
  background: white;
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 22px;
  box-shadow: 0 14px 34px rgba(8, 23, 71, 0.06);
}

.article-list h4 {
  margin: 7px 0 0;
  font-size: 20px;
  color: var(--navy);
  letter-spacing: -0.04em;
}

.cta-section { padding: 90px 0; }

.cta-box {
  text-align: center;
  border-radius: 38px;
  color: white;
  padding: 64px 28px;
  background:
    radial-gradient(circle at 22% 20%, rgba(242,184,75,0.3), transparent 26%),
    radial-gradient(circle at 80% 0%, rgba(25,212,208,0.38), transparent 32%),
    linear-gradient(135deg, var(--navy), #0c2c91 68%, #1198d8);
  box-shadow: var(--shadow);
}

.cta-box .eyebrow {
  color: var(--navy);
  background: rgba(255,255,255,0.82);
}

.cta-box h2 { color: white; }

.cta-box p {
  color: rgba(255,255,255,0.78);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.signup-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  max-width: 620px;
  margin: 30px auto 14px;
}

.signup-form input {
  flex: 1;
  min-height: 54px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.36);
  padding: 0 20px;
  outline: 0;
  font-size: 15px;
}

.cta-box small { color: rgba(255,255,255,0.64); }

.site-footer {
  padding: 34px 0;
  border-top: 1px solid var(--border);
  background: white;
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-footer strong { font-size: 20px; color: var(--navy); }
.site-footer p { margin: 7px 0 0; color: var(--muted); }

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  color: var(--muted);
  font-weight: 700;
}

@media (max-width: 980px) {
  .hero-grid,
  .recall-grid,
  .prompt-grid,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .hero { padding-top: 58px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .app-shell { min-height: auto; }
}

@media (max-width: 760px) {
  .nav-toggle { display: block; }

  .nav-menu {
    position: absolute;
    top: 82px;
    left: 4%;
    right: 4%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: white;
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 14px;
    box-shadow: var(--shadow);
  }

  .nav-menu.open { display: flex; }
  .nav-menu a { padding: 14px; }
  .brand-text { font-size: 20px; }

  h1 { font-size: 46px; }
  .hero-subtitle { font-size: 17px; }

  .app-shell {
    grid-template-columns: 1fr;
    border-radius: 26px;
  }

  .app-sidebar {
    display: flex;
    overflow-x: auto;
    gap: 8px;
    padding: 14px;
  }

  .app-sidebar a { white-space: nowrap; }

  .app-dot {
    flex: 0 0 auto;
    margin: 6px 10px 0 0;
  }

  .app-topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .card-grid,
  .feature-grid,
  .strip-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .featured-card { grid-column: auto; }

  .strip-grid div {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .strip-grid div:last-child { border-bottom: 0; }
  .signup-form { flex-direction: column; }

  .footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 420px) {
  .container { width: min(100% - 28px, 1180px); }
  .brand-logo { width: 42px; height: 42px; }
  .section { padding: 64px 0; }
  .app-main { padding: 18px; }
  .phone-frame { width: 100%; }
}
.brand-text {
  color: var(--navy);
}

.brand-nest {
  color: var(--cyan);
}

.brand-text strong {
  color: var(--blue);
}
.site-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.site-logo img {
  display: block;
  height: 58px;
  width: auto;
  max-width: 300px;
  object-fit: contain;
}

@media (max-width: 768px) {
  .site-logo img {
    height: 42px;
    max-width: 220px;
  }
}