/* The Pattern Project — Learning Labs */
/* Mobile-first responsive design — Warm theme */

:root {
  --bg: #efe8dc;
  --surface: #f7f2e8;
  --surface-raised: #fffbf5;
  --text: #1a1e1b;
  --accent: #365747;
  --accent-dim: rgba(54, 87, 71, 0.10);
  --accent-hover: #2a4638;
  --muted: #7a7568;
  --border: rgba(54, 87, 71, 0.15);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* — Nav — */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--accent);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  text-decoration: none;
}

.nav-links {
  display: none;
  list-style: none;
  gap: 28px;
  align-items: center;
}

.nav-links a {
  color: rgba(255,255,255,0.7);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
  transition: color .2s;
}

.nav-links a:hover {
  color: #fff;
}

.nav-register {
  display: inline-block;
  background: #fff;
  color: var(--accent) !important;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 8px 20px;
  border-radius: 3px;
  transition: opacity .2s;
}

.nav-register:hover {
  opacity: .85;
}

.nav-menu-btn {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-menu-btn span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: #fff;
}

/* Mobile nav overlay */

.nav-mobile {
  display: none;
  position: fixed;
  top: 56px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--accent);
  z-index: 99;
  padding: 40px 24px;
}

.nav-mobile.open {
  display: block;
}

.nav-mobile a {
  display: block;
  color: #fff;
  font-size: 18px;
  font-weight: 500;
  text-decoration: none;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255,255,255,0.2);
}

/* — Layout — */

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-wide {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 64px 0;
}

section + section {
  border-top: 1px solid var(--border);
}

/* — Hero — */

.hero {
  background: var(--surface);
  padding: 80px 0 72px;
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.02em;
  margin-bottom: 8px;
}

.hero .location {
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.hero p {
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  opacity: 0.8;
  max-width: 560px;
}

.hero-rule {
  width: 48px;
  height: 2px;
  background: var(--accent);
  border: none;
  margin: 28px 0;
}

/* — Section headings — */

.section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 24px;
}

h2 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.01em;
  margin-bottom: 20px;
}

/* — Text sections — */

.text-section p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  opacity: 0.85;
  margin-bottom: 16px;
}

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

.text-section a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* — Research stats — */

.research-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.research-card {
  padding: 28px 24px;
  border: 1px solid var(--border);
  background: var(--surface-raised);
}

.research-card .stat-highlight {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
  margin-bottom: 12px;
}

.research-card p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  opacity: 0.75;
}

/* — Course cards — */

.courses-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.course-card {
  border: 1px solid var(--border);
  padding: 32px 28px;
  text-decoration: none;
  color: var(--text);
  background: var(--surface-raised);
  display: block;
  transition: border-color .2s, box-shadow .2s;
}

.course-card:hover {
  border-color: var(--accent);
  box-shadow: 0 2px 12px var(--accent-dim);
}

.course-card.featured {
  border: 2px solid var(--accent);
  background: var(--surface);
  position: relative;
}

.featured-label {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #fff;
  background: var(--accent);
  padding: 4px 10px;
  margin-bottom: 14px;
}

.course-card h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 10px;
}

.course-card .card-desc {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  opacity: 0.75;
  margin-bottom: 16px;
}

.course-card .card-meta {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .02em;
}

.course-card .card-meta span {
  display: inline;
}

.course-card .card-meta span + span::before {
  content: " · ";
}

.card-cta {
  display: inline-block;
  margin-top: 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: .04em;
  text-transform: uppercase;
}

/* — About section — */

.about p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  opacity: 0.85;
}

/* — Footer — */

.footer {
  background: var(--accent);
  color: rgba(255,255,255,0.6);
  padding: 40px 24px;
  text-align: center;
  font-size: 14px;
  line-height: 1.8;
}

.footer a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
}

.footer a:hover {
  color: #fff;
}

/* — Course detail pages — */

.course-hero {
  background: var(--accent);
  color: #fff;
  padding: 64px 0 56px;
}

.course-hero h1 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.02em;
  margin-bottom: 8px;
}

.course-hero .subtitle {
  font-size: 16px;
  font-weight: 400;
  color: rgba(255,255,255,0.65);
  margin-bottom: 32px;
}

.course-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.course-meta-item .label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 4px;
}

.course-meta-item .value {
  font-size: 15px;
  font-weight: 500;
}

/* — Course content sections — */

.course-content h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.course-content p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  opacity: 0.85;
  margin-bottom: 16px;
}

.course-content ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 16px;
}

.course-content li {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  opacity: 0.85;
  margin-bottom: 8px;
}

.course-content .outcomes-note {
  font-size: 14px;
  font-style: italic;
  color: var(--muted);
  margin-bottom: 12px;
}

.day-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.day-item:last-child {
  border-bottom: none;
}

.day-item strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 4px;
  color: var(--accent);
}

/* — Dates section — */

.dates-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.date-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border: 1px solid var(--border);
  background: var(--surface-raised);
}

.date-card .date-text {
  font-size: 16px;
  font-weight: 600;
}

.date-card .date-status {
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .06em;
}

/* — Register CTA / Typeform embed — */

.register-section {
  text-align: center;
  padding: 64px 0;
}

.register-section p {
  font-size: 16px;
  color: var(--text);
  opacity: 0.75;
  margin-bottom: 24px;
}

.typeform-container {
  max-width: 720px;
  margin: 0 auto;
  min-height: 400px;
}

.btn-register {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 16px 40px;
  border-radius: 3px;
  transition: background .2s;
}

.btn-register:hover {
  background: var(--accent-hover);
}

/* — Responsive — */

@media (min-width: 640px) {
  .hero h1 {
    font-size: 42px;
  }
  .course-hero h1 {
    font-size: 42px;
  }
  .courses-grid {
    grid-template-columns: 1fr 1fr;
  }
  .course-card.featured {
    grid-column: 1 / -1;
  }
  .course-meta-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .research-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
  .nav-menu-btn {
    display: none;
  }
  section {
    padding: 80px 0;
  }
  .hero {
    padding: 100px 0 88px;
  }
  .hero h1 {
    font-size: 48px;
  }
  .course-hero {
    padding: 80px 0 72px;
  }
  .course-hero h1 {
    font-size: 48px;
  }
  h2 {
    font-size: 28px;
  }
  .dates-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}