:root {
  color-scheme: light;
  --ink: #152422;
  --muted: #62706d;
  --paper: #fffaf0;
  --paper-strong: #fff4d8;
  --panel: rgba(255, 250, 240, 0.84);
  --line: rgba(21, 36, 34, 0.14);
  --forest: #164238;
  --forest-soft: #d8eadf;
  --clay: #bd6232;
  --gold: #f3bc48;
  --sky: #9bc9d4;
  --shadow: 0 24px 70px rgba(21, 36, 34, 0.18);
  --radius: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  background:
    radial-gradient(circle at 15% 12%, rgba(243, 188, 72, 0.38), transparent 28rem),
    radial-gradient(circle at 87% 8%, rgba(155, 201, 212, 0.62), transparent 24rem),
    linear-gradient(135deg, #fffaf0 0%, #f3e2c3 48%, #d8eadf 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(21, 36, 34, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 36, 34, 0.09) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 82%);
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
}

.site-hero {
  position: relative;
  overflow: hidden;
  padding: 22px clamp(18px, 4vw, 64px) 72px;
}

.site-hero::after {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -110px;
  width: 360px;
  height: 360px;
  border-radius: 42% 58% 50% 50%;
  background: rgba(189, 98, 50, 0.18);
  transform: rotate(-18deg);
}

.topbar {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 16px;
  color: #fff;
  background: var(--forest);
  box-shadow: 8px 8px 0 rgba(189, 98, 50, 0.26);
  font-size: 1.5rem;
  font-weight: 700;
}

.brand small {
  display: block;
  color: var(--muted);
  font-family: "Trebuchet MS", sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 10px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 250, 240, 0.62);
  backdrop-filter: blur(18px);
}

.nav-links a {
  padding: 9px 14px;
  border-radius: 999px;
  color: var(--forest);
  font-family: "Trebuchet MS", sans-serif;
  font-size: 0.92rem;
  text-decoration: none;
}

.nav-links a:hover {
  background: rgba(22, 66, 56, 0.1);
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(290px, 0.7fr);
  align-items: end;
  gap: 42px;
  max-width: 1180px;
  margin: 82px auto 0;
}

.hero-copy {
  animation: rise-in 700ms ease both;
}

.eyebrow,
.filter-label {
  color: var(--clay);
  font-family: "Trebuchet MS", sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 900px;
  margin-bottom: 22px;
  font-size: clamp(3rem, 7vw, 6.8rem);
  line-height: 0.93;
  letter-spacing: -0.075em;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(2.1rem, 4vw, 4rem);
  line-height: 1;
  letter-spacing: -0.055em;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.3rem;
  line-height: 1.15;
}

.hero-copy p:not(.eyebrow),
.section-heading p:not(.eyebrow) {
  max-width: 710px;
  color: var(--muted);
  font-size: 1.14rem;
  line-height: 1.65;
}

.hero-actions,
.builder-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid rgba(21, 36, 34, 0.16);
  border-radius: 999px;
  cursor: pointer;
  font-family: "Trebuchet MS", sans-serif;
  font-weight: 700;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #fff;
  background: var(--forest);
  box-shadow: 0 14px 34px rgba(22, 66, 56, 0.28);
}

.button-ghost {
  color: var(--forest);
  background: rgba(255, 250, 240, 0.72);
}

.hero-panel {
  display: grid;
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 250, 240, 0.72);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
  animation: rise-in 700ms 160ms ease both;
}

.hero-panel-grid {
  display: grid;
  gap: 14px;
}

.hero-panel-grid div {
  padding: 20px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(255, 244, 216, 0.9), rgba(216, 234, 223, 0.82));
}

.hero-panel-grid span {
  display: block;
  font-family: "Trebuchet MS", sans-serif;
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.05em;
}

.hero-panel-grid small {
  color: var(--muted);
  font-family: "Trebuchet MS", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-panel-note {
  margin-bottom: 0;
  padding: 0 4px;
  color: var(--muted);
  line-height: 1.6;
}

.section {
  position: relative;
  max-width: 1180px;
  margin: 0 auto;
  padding: 78px clamp(18px, 3vw, 34px);
}

.section-heading {
  margin-bottom: 32px;
}

.class-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.class-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: 0 14px 44px rgba(21, 36, 34, 0.1);
  backdrop-filter: blur(14px);
}

.class-card {
  display: grid;
  gap: 14px;
  align-content: start;
  padding: 24px;
  width: 100%;
  color: inherit;
  text-align: left;
}

.class-card[aria-pressed="true"] {
  border-color: rgba(22, 66, 56, 0.36);
  box-shadow: 0 18px 50px rgba(22, 66, 56, 0.18);
}

.class-card-action {
  display: inline-flex;
  width: max-content;
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--forest);
  background: rgba(22, 66, 56, 0.1);
  font-family: "Trebuchet MS", sans-serif;
  font-weight: 700;
}

.accent-card {
  background:
    radial-gradient(circle at top right, rgba(243, 188, 72, 0.24), transparent 42%),
    rgba(255, 250, 240, 0.84);
}

.track-label {
  margin-bottom: 0;
  color: var(--clay);
  font-family: "Trebuchet MS", sans-serif;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.track-meta {
  color: var(--muted);
  line-height: 1.55;
}

.filters {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) 1fr 1.2fr;
  gap: 16px;
  align-items: end;
  margin-bottom: 24px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 250, 240, 0.72);
  backdrop-filter: blur(14px);
}

.compact-filters {
  padding: 20px;
}

.search-box,
.builder-card label {
  display: grid;
  gap: 8px;
  color: var(--forest);
  font-family: "Trebuchet MS", sans-serif;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid rgba(21, 36, 34, 0.18);
  border-radius: 16px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.74);
}

input,
select {
  min-height: 48px;
  padding: 0 14px;
}

textarea {
  padding: 13px 14px;
  resize: vertical;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.results-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.results-summary {
  margin-bottom: 0;
  color: var(--muted);
  font-family: "Trebuchet MS", sans-serif;
  line-height: 1.45;
}

.chip {
  border: 1px solid rgba(21, 36, 34, 0.16);
  border-radius: 999px;
  padding: 9px 12px;
  color: var(--forest);
  background: rgba(255, 250, 240, 0.72);
  cursor: pointer;
  font-family: "Trebuchet MS", sans-serif;
  font-weight: 700;
}

.chip[aria-pressed="true"] {
  color: #fff;
  background: var(--clay);
}

.materials-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.material-card,
.builder-card,
.preview-shell,
.guide-grid article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: 0 14px 44px rgba(21, 36, 34, 0.1);
  backdrop-filter: blur(14px);
}

.material-card {
  display: grid;
  gap: 16px;
  padding: 22px;
  animation: rise-in 520ms ease both;
}

.material-copy {
  display: grid;
  gap: 10px;
}

.material-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.badge {
  display: inline-flex;
  width: max-content;
  padding: 7px 10px;
  border-radius: 999px;
  color: var(--forest);
  background: var(--forest-soft);
  font-family: "Trebuchet MS", sans-serif;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.difficulty {
  color: var(--muted);
  font-family: "Trebuchet MS", sans-serif;
  font-size: 0.9rem;
}

.material-card h3 {
  margin-bottom: 0;
  font-size: 1.45rem;
}

.material-card p {
  color: var(--muted);
  line-height: 1.55;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.tag {
  padding: 6px 9px;
  border-radius: 999px;
  color: #5b4631;
  background: rgba(243, 188, 72, 0.28);
  font-family: "Trebuchet MS", sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
}

.card-actions .button {
  min-height: 40px;
  padding: 9px 13px;
  font-size: 0.9rem;
}

.empty-state {
  padding: 24px;
  border: 1px dashed rgba(21, 36, 34, 0.24);
  border-radius: 20px;
  color: var(--muted);
  text-align: center;
}

.builder-layout {
  display: grid;
  grid-template-columns: 380px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.builder-toggle {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 250, 240, 0.78);
  box-shadow: 0 14px 44px rgba(21, 36, 34, 0.1);
  backdrop-filter: blur(14px);
}

.builder-toggle summary {
  cursor: pointer;
  padding: 20px 22px;
  color: var(--forest);
  font-family: "Trebuchet MS", sans-serif;
  font-size: 1rem;
  font-weight: 800;
  list-style: none;
}

.builder-toggle summary::-webkit-details-marker {
  display: none;
}

.builder-toggle[open] summary {
  border-bottom: 1px solid var(--line);
}

.builder-toggle .builder-layout {
  padding: 22px;
}

.builder-card {
  display: grid;
  gap: 16px;
  padding: 22px;
}

.builder-insights {
  display: grid;
  gap: 8px;
  padding: 16px;
  border: 1px solid rgba(21, 36, 34, 0.12);
  border-radius: 20px;
  background: rgba(255, 244, 216, 0.45);
}

.builder-insight-strong,
.builder-insight-muted {
  margin-bottom: 0;
}

.builder-insight-strong {
  color: var(--forest);
  font-family: "Trebuchet MS", sans-serif;
  font-weight: 800;
}

.builder-insight-muted {
  color: var(--muted);
  line-height: 1.5;
}

.preview-shell {
  overflow: hidden;
}

.preview-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 20px;
  color: #fff;
  background: var(--forest);
  font-family: "Trebuchet MS", sans-serif;
  font-weight: 700;
}

.preview-toolbar small {
  opacity: 0.76;
}

.worksheet-preview {
  min-height: 560px;
  padding: 34px;
  background: #fffefa;
}

.worksheet-document {
  max-width: 760px;
  margin: 0 auto;
  color: #111;
  font-family: Georgia, "Times New Roman", serif;
}

.worksheet-document header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: end;
  margin-bottom: 26px;
  padding-bottom: 18px;
  border-bottom: 2px solid #111;
}

.worksheet-document h2 {
  margin: 0 0 8px;
  font-size: 2rem;
  letter-spacing: -0.03em;
}

.worksheet-meta {
  color: #444;
  font-size: 0.95rem;
}

.worksheet-box {
  margin: 18px 0 24px;
  padding: 14px 16px;
  border: 1px solid #222;
  background: #fff;
}

.question-list {
  display: grid;
  gap: 18px;
  padding-left: 24px;
}

.question-list li {
  padding-left: 4px;
  line-height: 1.5;
}

.question-heading {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 8px;
}

.question-type {
  display: inline-flex;
  padding: 5px 9px;
  border-radius: 999px;
  color: var(--forest);
  background: rgba(22, 66, 56, 0.08);
  font-family: "Trebuchet MS", sans-serif;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.question-prompt {
  margin-bottom: 10px;
}

.question-figure {
  margin: 14px 0;
  padding: 10px;
  border: 1px solid #bbb;
  break-inside: avoid;
}

.question-figure img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
}

.question-figure figcaption {
  margin-top: 8px;
  color: #444;
  font-size: 0.9rem;
  text-align: center;
}

.answer-lines {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.answer-lines span {
  display: block;
  border-bottom: 1px solid #777;
  height: 1.2rem;
}

.muted {
  color: var(--muted);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.guide-grid article {
  padding: 24px;
}

.guide-grid span {
  display: inline-flex;
  margin-bottom: 22px;
  color: var(--clay);
  font-family: "Trebuchet MS", sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.08em;
}

.guide-grid p {
  color: var(--muted);
  line-height: 1.55;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  max-width: 1180px;
  margin: 20px auto 0;
  padding: 28px clamp(18px, 3vw, 34px) 44px;
  color: var(--muted);
  font-family: "Trebuchet MS", sans-serif;
}

.site-footer a {
  color: var(--forest);
  font-weight: 700;
  text-decoration: none;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 940px) {
  .hero-content,
  .filters,
  .builder-layout {
    grid-template-columns: 1fr;
  }

  .class-card-grid,
  .materials-grid,
  .guide-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .site-hero {
    padding-bottom: 48px;
  }

  .topbar,
  .nav-links,
  .hero-actions,
  .builder-actions,
  .site-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .nav-links {
    border-radius: 22px;
  }

  .hero-content {
    margin-top: 42px;
  }

  h1 {
    font-size: clamp(2.7rem, 16vw, 4.2rem);
  }

  .class-card-grid,
  .materials-grid,
  .guide-grid {
    grid-template-columns: 1fr;
  }

  .results-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .worksheet-preview {
    padding: 18px;
  }

  .worksheet-document header {
    grid-template-columns: 1fr;
  }
}

@media print {
  body {
    background: #fff;
  }

  .site-hero,
  .class-picker-section,
  .library-section,
  .site-footer,
  .builder-card,
  .preview-toolbar {
    display: none;
  }

  .section {
    max-width: none;
    padding: 0;
  }

  .builder-layout {
    display: block;
  }

  .preview-shell {
    border: 0;
    box-shadow: none;
  }

  .worksheet-preview {
    padding: 0;
  }
}