:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6f8;
  --color-text: #1b2430;
  --color-text-muted: #52606d;
  --color-border: #dde3ea;
  --color-primary: #1d5b8a;
  --color-primary-dark: #14405f;
  --color-accent: #c1440e;
  --max-width: 1080px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1rem;
  z-index: 100;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.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 {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 700;
}

.site-header__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  padding: 0.35rem 0.55rem;
  border-radius: var(--radius);
}

.site-header__name {
  font-size: 1.05rem;
}

.site-nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.4rem 0.6rem;
  font-size: 1.1rem;
  cursor: pointer;
}

.site-nav__list {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__list a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-weight: 600;
}

.site-nav__list a:hover,
.site-nav__list a[aria-current="page"] {
  color: var(--color-primary);
}

@media (max-width: 640px) {
  .site-nav__toggle {
    display: inline-block;
  }
  .site-nav__list {
    display: none;
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
    padding-top: 0.75rem;
  }
  .site-nav__list.is-open {
    display: flex;
  }
  .site-nav {
    width: 100%;
  }
}

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
}

.hero__inner {
  padding: 4rem 1.25rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4vw, 2.75rem);
}

.hero__lede {
  max-width: 42rem;
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.9);
}

.hero__actions {
  margin-top: 1.75rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Buttons */
.button {
  display: inline-block;
  padding: 0.7rem 1.3rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.6);
  color: #fff;
  transition: transform 0.1s ease, background 0.15s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button--primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.button--small {
  padding: 0.45rem 0.9rem;
  font-size: 0.9rem;
}

section .button:not(.button--primary) {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.hero .button:not(.button--primary) {
  color: #fff;
}

/* Sections */
.section {
  padding: 2.5rem 1.25rem;
}

.section--callout {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section--card {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 2rem 1.25rem;
}

.prose h1,
.prose h2 {
  color: var(--color-text);
}

.prose h2 {
  margin-top: 2rem;
  font-size: 1.4rem;
}

.prose p,
.prose li {
  color: var(--color-text-muted);
}

.prose a {
  color: var(--color-primary);
}

/* Exam session list */
.session-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.session-card {
  display: grid;
  grid-template-columns: 10rem 1fr;
  gap: 1.25rem;
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg-alt);
}

.session-card__date {
  display: flex;
  flex-direction: column;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.session-card__time {
  font-weight: 500;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.session-card__location {
  font-weight: 600;
  margin: 0 0 0.35rem;
}

.session-card__notes {
  color: var(--color-text-muted);
  margin: 0 0 0.75rem;
}

@media (max-width: 560px) {
  .session-card {
    grid-template-columns: 1fr;
  }
}

/* Blog list */
.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.75rem;
}

.post-list__item h2 {
  margin: 0 0 0.25rem;
  color: var(--color-primary-dark);
}

.post-list__item a {
  text-decoration: none;
}

.post-list__item a:hover h2 {
  color: var(--color-primary);
}

.post-list__meta {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0 0 0.5rem;
}

/* Post */
.post__meta {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Contact form (optional Formspree block) */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-width: 32rem;
}

.contact-form label {
  font-weight: 600;
  margin-top: 0.75rem;
}

.contact-form input,
.contact-form textarea {
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
}

.contact-form button {
  margin-top: 1rem;
  align-self: flex-start;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

/* Coming soon */
.coming-soon {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 3rem 1.25rem;
}

.coming-soon h1 {
  font-size: clamp(1.9rem, 4vw, 2.5rem);
  margin-bottom: 1rem;
}

.coming-soon__lede {
  color: var(--color-text-muted);
  max-width: 38rem;
  font-size: 1.1rem;
}

.coming-soon a {
  color: var(--color-primary);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: 3rem;
  background: var(--color-bg-alt);
}

.site-footer__inner {
  padding: 2rem 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.site-footer__meta {
  margin-top: 0.5rem;
}