/* Atlantis University: landing page
 * Tokens pulled from brand-pack.json
 */

:root {
  --au-red: #EA1C24;
  --au-red-deep: #C71017;
  --au-black: #000000;
  --au-accent: #BCC8C9;
  --au-ink: #3E3E3E;
  --au-mist: #F5F5F5;
  --au-white: #FFFFFF;
  --au-border: #E4E7E8;
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --shadow-subtle: 0 1px 2px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.12);
  --section-gap: 80px;
  --unit: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  color: var(--au-ink);
  background: var(--au-white);
}

a {
  color: var(--au-red);
  text-decoration: none;
  border-bottom: 1px solid rgba(234, 28, 36, 0.25);
  transition: border-color 160ms ease, color 160ms ease;
}

a:hover,
a:focus-visible {
  color: var(--au-red-deep);
  border-bottom-color: var(--au-red-deep);
}

a:focus-visible {
  outline: 2px solid var(--au-red);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

h1, h2, h3 {
  font-family: 'Open Sans', sans-serif;
  color: var(--au-black);
  font-weight: 700;
  margin: 0;
  letter-spacing: 0;
}

p {
  margin: 0 0 1.1em 0;
}

p:last-child {
  margin-bottom: 0;
}

/* Top bar */
.topbar {
  border-bottom: 1px solid var(--au-border);
  background: var(--au-white);
}

.topbar-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: inline-flex;
  align-items: center;
}

.logo img {
  height: 44px;
  width: auto;
  display: block;
}

.topbar-meta {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--au-ink);
  font-weight: 600;
}

.topbar-meta .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--au-red);
  border-radius: 50%;
  margin: 0 10px 2px 0;
  vertical-align: middle;
}

/* Hero */
.hero {
  background: linear-gradient(180deg, var(--au-white) 0%, var(--au-mist) 100%);
  border-bottom: 4px solid var(--au-red);
  padding: 72px 24px 64px;
}

.hero-inner {
  max-width: 1120px;
  margin: 0 auto;
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--au-red);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--au-red);
  margin-bottom: 28px;
}

.headline {
  font-size: clamp(28px, 4.2vw, 46px);
  line-height: 1.15;
  max-width: 920px;
  margin-bottom: 20px;
}

.headline .strike {
  color: var(--au-red);
}

.deck {
  font-size: clamp(16px, 1.6vw, 18px);
  max-width: 720px;
  color: var(--au-ink);
  line-height: 1.6;
}

.hero-tag {
  margin-top: 36px;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: lowercase;
  color: var(--au-ink);
  display: flex;
  align-items: center;
  gap: 14px;
  font-style: italic;
  font-weight: 400;
}

.hero-tag::before {
  content: "";
  display: block;
  width: 40px;
  height: 1px;
  background: var(--au-ink);
}

/* Content sections */
.content {
  max-width: 1120px;
  margin: 0 auto;
  padding: var(--section-gap) 24px;
}

.content section {
  margin-bottom: var(--section-gap);
}

.content section:last-child {
  margin-bottom: 0;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--au-border);
}

.section-num {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--au-red);
}

.section-title {
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.prose {
  font-size: 17px;
  line-height: 1.65;
  max-width: 680px;
}

.prose strong {
  color: var(--au-black);
  font-weight: 700;
}

/* Metric cards */
.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.metric {
  background: var(--au-white);
  border: 1px solid var(--au-border);
  border-top: 3px solid var(--au-red);
  padding: 24px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-subtle);
}

.metric .num {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--au-black);
  line-height: 1.1;
  margin-bottom: 6px;
}

.metric .label {
  font-size: 12px;
  line-height: 1.4;
  color: var(--au-ink);
  letter-spacing: 0.04em;
}

/* Frame block */
.frame-box {
  background: var(--au-mist);
  border-left: 4px solid var(--au-red);
  padding: 28px 32px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.frame-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.frame-list li {
  background: var(--au-white);
  padding: 18px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--au-border);
  text-align: center;
}

.frame-list .pct {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: var(--au-red);
  line-height: 1;
  margin-bottom: 6px;
}

.frame-list .kind {
  display: block;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--au-black);
  font-weight: 700;
  margin-bottom: 6px;
}

.frame-list small {
  font-size: 13px;
  color: var(--au-ink);
}

/* Paper card */
.paper-card {
  border: 1px solid var(--au-border);
  border-radius: var(--radius-md);
  padding: 24px;
  background: var(--au-white);
  box-shadow: var(--shadow-subtle);
}

.paper-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.paper-card .meta {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--au-red);
  font-weight: 700;
  margin-bottom: 14px;
}

.paper-card p {
  font-size: 15px;
  line-height: 1.55;
}

.paper-links {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 13px;
}

/* Credit bar */
.credit {
  background: var(--au-black);
  color: var(--au-white);
  padding: 48px 24px;
}

.credit-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 56px;
  align-items: center;
}

.credit h2 {
  color: var(--au-white);
  font-size: clamp(22px, 2.4vw, 28px);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--au-red);
  display: inline-block;
}

.credit p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  line-height: 1.65;
}

.credit a {
  color: var(--au-white);
  border-bottom-color: rgba(255, 255, 255, 0.4);
}

.credit a:hover {
  color: var(--au-red);
  border-bottom-color: var(--au-red);
}

.cred-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.cred-list li {
  padding: 10px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
}

.cred-list li:first-child {
  border-top: 0;
}

.cred-list strong {
  color: var(--au-white);
  font-weight: 700;
}

/* CTA */
.cta {
  background: var(--au-white);
  padding: 80px 24px 96px;
  text-align: left;
}

.cta-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.cta-eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--au-red);
  margin-bottom: 18px;
}

.cta h2 {
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.15;
  margin-bottom: 18px;
}

.cta p {
  font-size: 16px;
  line-height: 1.65;
  max-width: 540px;
}

.cta-panel {
  background: var(--au-mist);
  border: 1px solid var(--au-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-medium);
}

.cta-panel .host {
  font-size: 14px;
  color: var(--au-ink);
  margin-bottom: 4px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 700;
}

.cta-panel .host-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--au-black);
  margin-bottom: 6px;
}

.cta-panel .host-role {
  font-size: 14px;
  color: var(--au-ink);
  margin-bottom: 22px;
}

.btn {
  display: inline-block;
  background: var(--au-red);
  color: var(--au-white);
  font-family: 'Open Sans', sans-serif;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 16px 28px;
  border-radius: var(--radius-md);
  border: 2px solid var(--au-red);
  border-bottom: 0;
  min-height: 48px;
  cursor: pointer;
  transition: background 160ms ease, transform 160ms ease;
}

.btn:hover,
.btn:focus-visible {
  background: var(--au-red-deep);
  border-color: var(--au-red-deep);
  color: var(--au-white);
}

.cta-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--au-ink);
  line-height: 1.5;
}

/* Footer */
.foot {
  background: var(--au-mist);
  border-top: 1px solid var(--au-border);
  padding: 32px 24px;
  font-size: 13px;
  color: var(--au-ink);
}

.foot-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.foot a {
  color: var(--au-ink);
  border-bottom-color: rgba(62, 62, 62, 0.3);
}

.foot a:hover {
  color: var(--au-red);
  border-bottom-color: var(--au-red);
}

/* Mobile */
@media (max-width: 768px) {
  .hero {
    padding: 56px 20px 48px;
  }

  .content {
    padding: 56px 20px;
  }

  .content section {
    margin-bottom: 56px;
  }

  .topbar-inner {
    padding: 16px 20px;
  }

  .topbar-meta {
    display: none;
  }

  .grid-2,
  .credit-inner,
  .cta-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .metrics {
    grid-template-columns: 1fr;
  }

  .frame-list {
    grid-template-columns: 1fr;
  }

  .credit {
    padding: 48px 20px;
  }

  .cta {
    padding: 56px 20px 72px;
  }

  .cta-panel {
    padding: 24px;
  }
}

@media (max-width: 380px) {
  .headline {
    font-size: 26px;
  }
  .section-title {
    font-size: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}