/*
 * SPDX-FileCopyrightText: 2026 Stanford University
 * SPDX-License-Identifier: MIT
 */

:root {
  color-scheme: light;
  --cardinal: #8c1515;
  --cardinal-dark: #651010;
  --ink: #181818;
  --muted: #5f5b57;
  --line: #d9d5d2;
  --soft: #f6f3f1;
  --white: #ffffff;
  --link: #006cb8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1.05rem;
  line-height: 1.6;
}

a {
  color: var(--link);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

a:hover {
  color: var(--cardinal);
}

a:focus-visible {
  border-radius: 0.2rem;
  outline: 0.2rem solid #f4c95d;
  outline-offset: 0.2rem;
}

.landing-page {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 2rem;
  background: var(--soft);
}

.landing-card {
  width: min(100%, 40rem);
  padding: clamp(2rem, 7vw, 4.5rem);
  border-top: 0.4rem solid var(--cardinal);
  background: var(--white);
  box-shadow: 0 1.2rem 3rem rgb(0 0 0 / 8%);
  text-align: center;
}

.stanford-wordmark {
  display: block;
  width: min(100%, 22rem);
  height: auto;
  margin: 0 auto 2.25rem;
}

h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.15;
}

.landing-card h1 {
  margin: 0;
  font-size: clamp(2.8rem, 10vw, 4.5rem);
  letter-spacing: -0.03em;
}

.summary {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 1.25rem;
}

.study-only {
  max-width: 33rem;
  margin: 2rem auto 0;
  font-weight: 650;
}

.primary-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2rem;
}

.button {
  min-width: 9.5rem;
  padding: 0.7rem 1.2rem;
  border: 0.13rem solid var(--cardinal);
  border-radius: 0.25rem;
  color: var(--white);
  background: var(--cardinal);
  font-weight: 700;
  text-decoration: none;
}

.button:hover {
  color: var(--white);
  background: var(--cardinal-dark);
}

.button-secondary {
  color: var(--cardinal);
  background: var(--white);
}

.button-secondary:hover {
  color: var(--white);
}

.site-header {
  padding: 1.25rem max(1.25rem, calc((100% - 46rem) / 2));
  border-bottom: 0.3rem solid var(--cardinal);
}

.site-header a {
  display: inline-block;
}

.wordmark-small {
  width: 13rem;
  margin: 0;
}

.policy {
  width: min(calc(100% - 2.5rem), 46rem);
  margin: 0 auto;
  padding: clamp(2.75rem, 8vw, 5.5rem) 0 3rem;
}

.eyebrow {
  margin: 0 0 0.4rem;
  color: var(--cardinal);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.policy > h1 {
  margin: 0;
  font-size: clamp(2.6rem, 8vw, 4.5rem);
  letter-spacing: -0.03em;
}

.effective-date {
  margin: 0.9rem 0 2.5rem;
  color: var(--muted);
}

.notice {
  padding: 1.25rem 1.5rem;
  border-left: 0.35rem solid var(--cardinal);
  background: var(--soft);
}

.notice h2,
.policy section h2 {
  margin: 0 0 0.6rem;
  color: var(--cardinal-dark);
  font-size: 1.45rem;
}

.notice p,
.policy section p {
  margin: 0;
}

.policy section {
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
}

.policy footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-top: 2rem;
  font-size: 0.92rem;
}

@media (max-width: 32rem) {
  .landing-page {
    padding: 0;
    background: var(--white);
  }

  .landing-card {
    box-shadow: none;
  }
}