/* NEO Maths GreenPrint — shared styles
   Nudge Education Online · Nudge Education Ltd
   Design language carried forward from neo-maths v1 */

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

:root {
  --teal-deep:   #1A2E3B;
  --teal-mid:    #1F8E7F;
  --teal-light:  #2AB3A0;
  --cream:       #F7F7F5;
  --ink:         #2D3436;
  --muted:       #6B7B8D;
  --border:      #E8ECEF;
  --card-bg:     rgba(255,255,255,0.82);
  --radius:      16px;
  --transition:  0.35s cubic-bezier(0.4, 0, 0.2, 1);

  /* Six Cornerstones accents */
  --cs-connection: #2AB3A0;
  --cs-movement:   #e8923a;
  --cs-creativity: #8b6bc4;
  --cs-reflection: #5a9fd4;
  --cs-rest:       #5a7a5a;
  --cs-nutrition:  #d4a017;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--cream);
  color: var(--ink);
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 10% 20%, rgba(42,179,160,0.10) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 90% 80%, rgba(26,46,59,0.06) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

header.site { position: relative; z-index: 10; padding: 3rem 2rem 1.5rem; text-align: center; }

.wordmark {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--teal-mid);
  margin-bottom: 1.5rem;
}
.wordmark a { color: inherit; text-decoration: none; }

h1.display {
  font-family: 'Fraunces', serif;
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 300;
  line-height: 1.1;
  color: var(--teal-deep);
}
h1.display em { font-style: italic; color: var(--teal-light); }

.tagline {
  margin: 1rem auto 1.5rem;
  font-family: 'Fraunces', serif;
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  font-weight: 300;
  font-style: italic;
  color: var(--muted);
  max-width: 560px;
}

.divider {
  width: 60px; height: 2px;
  background: linear-gradient(90deg, var(--teal-deep), var(--teal-light));
  margin: 1.5rem auto; border-radius: 2px;
}

main { position: relative; z-index: 5; max-width: 1080px; margin: 0 auto; padding: 1rem 2rem 4rem; }

nav.crumbs { font-size: 0.85rem; color: var(--muted); margin-bottom: 2rem; }
nav.crumbs a { color: var(--teal-mid); text-decoration: none; }
nav.crumbs a:hover { text-decoration: underline; }

section.unit { margin-bottom: 3rem; }

h2.unit-title {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: 1.6rem;
  color: var(--teal-deep);
  margin-bottom: 0.35rem;
}
.unit-meta { font-size: 0.85rem; color: var(--muted); margin-bottom: 1.25rem; }

.lesson-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }

.lesson-card {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: transform var(--transition), box-shadow var(--transition);
  border-left: 4px solid var(--teal-light);
}
.lesson-card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(26,46,59,0.12); }
.lesson-card .num { font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.lesson-card .name { font-family: 'Fraunces', serif; font-size: 1.12rem; font-weight: 500; line-height: 1.3; color: var(--teal-deep); }
.lesson-card .badges { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.25rem; }

.badge {
  font-size: 0.68rem; font-weight: 600; letter-spacing: 0.04em;
  padding: 0.18rem 0.55rem; border-radius: 999px;
  background: rgba(42,179,160,0.12); color: var(--teal-mid);
}
.badge.cs-connection { background: rgba(42,179,160,0.14); color: #177567; }
.badge.cs-movement   { background: rgba(232,146,58,0.14); color: #a15c14; }
.badge.cs-creativity { background: rgba(139,107,196,0.14); color: #5f4494; }
.badge.cs-reflection { background: rgba(90,159,212,0.16); color: #2d6ca3; }
.badge.cs-rest       { background: rgba(90,122,90,0.16);  color: #3f5a3f; }
.badge.cs-nutrition  { background: rgba(212,160,23,0.16); color: #8a6a0d; }

.progress-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border); flex-shrink: 0; }
.progress-dot.started  { background: #d4a017; }
.progress-dot.complete { background: var(--teal-light); }
.card-top { display: flex; justify-content: space-between; align-items: center; }

.pending { opacity: 0.55; pointer-events: none; }
.pending .name::after { content: ' · coming soon'; font-size: 0.75rem; color: var(--muted); font-style: italic; }

footer.site {
  position: relative; z-index: 5;
  text-align: center; padding: 2.5rem 2rem 3rem;
  font-size: 0.8rem; color: var(--muted);
  border-top: 1px solid var(--border);
}
footer.site .neo-mark { font-family: 'Fraunces', serif; font-size: 1.1rem; color: var(--teal-deep); }
footer.site .neo-mark span { color: var(--teal-light); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .lesson-card { transition: none; }
}