/* AP Bio Unit 1 Practice Questions — practice-first page */

body.bio-unit1-practice-page {
  background: var(--bg, #fbfcff);
  color: #1f2545;
}

/* Layout/sidebar: requires bio-unit1-review.css + body.bio-unit1-review-page (see build script).
   Minimal fallbacks if shared stylesheet fails to load. */
body.bio-unit1-practice-page:not(.bio-unit1-review-page) .layout {
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 20px 48px;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  align-items: start;
}

body.bio-unit1-practice-page:not(.bio-unit1-review-page) .practice-jump-link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 2px solid #0a0f5a;
  background: #ffffff;
  text-decoration: none;
  color: #0a0f5a;
}

body.bio-unit1-practice-page:not(.bio-unit1-review-page) .practice-jump-label {
  display: block;
  font-weight: 800;
  font-size: 0.92rem;
}

body.bio-unit1-practice-page:not(.bio-unit1-review-page) .practice-jump-sub {
  display: block;
  font-size: 0.78rem;
  color: #1f2545;
}

body.bio-unit1-practice-page:not(.bio-unit1-review-page) .path-link {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 10px;
  text-decoration: none;
  color: inherit;
}

body.bio-unit1-practice-page:not(.bio-unit1-review-page) .path-body strong {
  display: block;
}

body.bio-unit1-practice-page:not(.bio-unit1-review-page) .path-sub {
  display: block;
  font-size: 0.78rem;
  color: #64748b;
}

body.bio-unit1-practice-page .bio-unit1-review-mobile-bar {
  display: none !important;
}

body.bio-unit1-practice-page .bio-unit1-practice-hero {
  background: linear-gradient(145deg, #0a0f5a 0%, #1c2580 55%, #243291 100%);
  color: #ffffff;
  padding: 28px 0 36px;
}

body.bio-unit1-practice-page .bio-unit1-practice-hero .hero-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: center;
}

body.bio-unit1-practice-page .bio-unit1-practice-hero h1 {
  color: #ffffff;
  font-size: clamp(1.55rem, 3.2vw, 2.15rem);
  line-height: 1.15;
  margin: 10px 0 14px;
}

body.bio-unit1-practice-page .bio-unit1-practice-hero .hero-eyebrow,
body.bio-unit1-practice-page .bio-unit1-practice-hero .hero-lead,
body.bio-unit1-practice-page .bio-unit1-practice-hero .hero-meta {
  color: rgba(255, 255, 255, 0.88);
}

body.bio-unit1-practice-page .bio-unit1-practice-hero .btn-primary {
  background: #f59e0b;
  color: #0a0f5a;
  border-color: #f59e0b;
}

body.bio-unit1-practice-page .bio-unit1-practice-hero .btn-light {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.35);
}

@media (max-width: 980px) {
  body.bio-unit1-practice-page .bio-unit1-practice-hero .hero-inner {
    grid-template-columns: 1fr;
  }
}

body.bio-unit1-practice-page .hero-stat-chips {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 16px 0 18px;
  padding: 0;
  list-style: none;
}

body.bio-unit1-practice-page .hero-stat-chips li {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid #dbe2f2;
  background: rgba(255, 255, 255, 0.12);
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.92);
}

body.bio-unit1-practice-page .hero-stat-chips strong {
  display: block;
  font-size: 1.1rem;
  color: #ffffff;
  margin-bottom: 2px;
}

body.bio-unit1-practice-page .practice-directions-box {
  border-color: #c7d2fe;
  background: #f8faff;
}

body.bio-unit1-practice-page .practice-directions-box p {
  color: #1f2545;
}

body.bio-unit1-practice-page .score-band-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

body.bio-unit1-practice-page .score-band {
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid #dbe2f2;
  background: #ffffff;
}

body.bio-unit1-practice-page .score-band h3 {
  margin: 0 0 8px;
  font-size: 0.95rem;
  color: #0a0f5a;
}

body.bio-unit1-practice-page .score-band p {
  margin: 0;
  font-size: 0.88rem;
  color: #4a5276;
}

body.bio-unit1-practice-page .score-band-strong {
  border-color: #86efac;
  background: #f0fdf4;
}

body.bio-unit1-practice-page .score-band-good {
  border-color: #93c5fd;
  background: #eff6ff;
}

body.bio-unit1-practice-page .score-band-focus {
  border-color: #fcd34d;
  background: #fffbeb;
}

body.bio-unit1-practice-page .score-band-rebuild {
  border-color: #fca5a5;
  background: #fef2f2;
}

body.bio-unit1-practice-page .topic-tag-key,
body.bio-unit1-review-page .topic-tag-key,
body.chemistry-of-life-practice-page .topic-tag-key {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

body.bio-unit1-practice-page .topic-tag {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border: 1px solid #dbe2f2;
  background: #f8faff;
  color: #0a0f5a;
}

body.bio-unit1-practice-page .tag-water {
  background: #eff6ff;
  border-color: #93c5fd;
}

body.bio-unit1-practice-page .tag-chnops {
  background: #f5f3ff;
  border-color: #c4b5fd;
}

body.bio-unit1-practice-page .tag-monomers {
  background: #fff7ed;
  border-color: #fdba74;
}

body.bio-unit1-practice-page .tag-dh {
  background: #ecfeff;
  border-color: #67e8f9;
}

body.bio-unit1-practice-page .tag-macro {
  background: #f0fdf4;
  border-color: #86efac;
}

body.bio-unit1-practice-page .tag-carbs {
  background: #fffbeb;
  border-color: #fcd34d;
}

body.bio-unit1-practice-page .tag-lipids {
  background: #fdf4ff;
  border-color: #e9d5ff;
}

body.bio-unit1-practice-page .tag-proteins {
  background: #fef2f2;
  border-color: #fca5a5;
}

body.bio-unit1-practice-page .tag-nucleic {
  background: #f8fafc;
  border-color: #94a3b8;
}

body.bio-unit1-practice-page .tag-sf {
  background: #eef2ff;
  border-color: #818cf8;
}

body.bio-unit1-practice-page .practice-mcq-grid {
  display: grid;
  gap: 16px;
  margin-top: 16px;
}

body.bio-unit1-practice-page .practice-mcq-card {
  padding: 16px;
  border-radius: 16px;
  border: 1px solid #e2e8f0;
  background: #ffffff;
}

body.bio-unit1-practice-page .practice-mcq-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

body.bio-unit1-practice-page .practice-mcq-num {
  font-weight: 800;
  color: #0a0f5a;
  font-size: 0.88rem;
}

body.bio-unit1-practice-page .difficulty-pill {
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid #dbe2f2;
  color: #4a5276;
}

body.bio-unit1-practice-page .difficulty-easy {
  background: #f0fdf4;
  border-color: #86efac;
  color: #166534;
}

body.bio-unit1-practice-page .difficulty-medium {
  background: #fffbeb;
  border-color: #fcd34d;
  color: #92400e;
}

body.bio-unit1-practice-page .difficulty-hard {
  background: #fef2f2;
  border-color: #fca5a5;
  color: #991b1b;
}

body.bio-unit1-practice-page .practice-mcq-choices {
  margin: 10px 0 0;
  padding-left: 1.2rem;
  color: #1f2545;
}

body.bio-unit1-practice-page .practice-mcq-reveal summary {
  cursor: pointer;
  font-weight: 700;
  color: #2f66d0;
  margin-top: 12px;
}

body.bio-unit1-practice-page .practice-mcq-answer {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid #e8ecf4;
}

body.bio-unit1-practice-page .pill-difficulty {
  background: #fff7ed;
  border-color: #fdba74;
  color: #9a3412;
}

body.bio-unit1-practice-page .score-next-list {
  margin: 12px 0 0;
  padding-left: 1.2rem;
  color: #1f2545;
}

body.bio-unit1-practice-page .score-next-list li {
  margin-bottom: 10px;
}

body.bio-unit1-practice-page .bio-unit1-practice-mobile-bar {
  display: none;
  position: sticky;
  bottom: 0;
  z-index: 40;
  padding: 14px 16px;
  text-align: center;
  font-weight: 800;
  text-decoration: none;
  background: linear-gradient(145deg, #0a0f5a, #1c2580);
  color: #ffffff;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

body.bio-unit1-practice-page .coverage-table a,
body.bio-unit1-practice-page .practice-mcq-answer a {
  font-weight: 600;
}

@media (max-width: 980px) {
  body.bio-unit1-practice-page .score-band-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  body.bio-unit1-practice-page .hero-stat-chips {
    grid-template-columns: 1fr;
  }

  body.bio-unit1-practice-page .bio-unit1-practice-mobile-bar {
    display: block;
  }
}

@media (max-width: 640px) {
  body.bio-unit1-practice-page .hub-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
}