:root {
  color-scheme: light;
  --ink: #14201d;
  --ink-soft: #53635e;
  --paper: #f5f4ee;
  --surface: rgba(255, 255, 252, 0.9);
  --surface-solid: #fffef9;
  --line: #d7ddd8;
  --accent: #087f70;
  --accent-dark: #075f56;
  --accent-soft: #dceee9;
  --warm: #d98b47;
  --danger: #a43c32;
  --danger-soft: #f6e4e1;
  --success: #1c735b;
  --success-soft: #e2f2eb;
  --shadow: 0 18px 55px rgba(25, 45, 39, 0.09);
  --page-glow: rgba(8, 127, 112, 0.08);
  --part-a-soft: #e4f3ef;
  --part-b-soft: #e7f0f7;
  --part-c-soft: #eeeafa;
  --part-d-soft: #f8ece4;
  --part-e-soft: #f6f1d8;
  --radius-small: 0.5rem;
  --radius: 0.875rem;
  --radius-large: 1.5rem;
  --page-width: 1220px;
  font-family:
    Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 80% 10%, var(--page-glow), transparent 28rem),
    var(--paper);
}

body[data-theme="marine"] {
  --ink: #3f4042;
  --ink-soft: #888a8d;
  --paper: #f2f8fc;
  --surface: rgba(255, 255, 255, 0.94);
  --surface-solid: #ffffff;
  --line: #c0c3c6;
  --accent: #3ebdde;
  --accent-dark: #2289a6;
  --accent-soft: #e4f6fb;
  --warm: #3ebdde;
  --shadow: 0 18px 55px rgba(63, 64, 66, 0.11);
  --page-glow: rgba(62, 189, 222, 0.18);
}

body[data-theme="swiss-red"] {
  --ink: #281616;
  --ink-soft: #6a5552;
  --paper: #f7f1ee;
  --surface: rgba(255, 250, 247, 0.92);
  --surface-solid: #fffaf7;
  --line: #e4d0cc;
  --accent: #b00020;
  --accent-dark: #7d0017;
  --accent-soft: #f4dcde;
  --warm: #c28b4f;
  --shadow: 0 18px 55px rgba(88, 16, 20, 0.11);
  --page-glow: rgba(176, 0, 32, 0.13);
}

body[data-theme="koenigswege-gold"] {
  --ink: #241b08;
  --ink-soft: #665839;
  --paper: #f7f1df;
  --surface: rgba(255, 252, 243, 0.92);
  --surface-solid: #fffaf0;
  --line: #e6d7ad;
  --accent: #b88a00;
  --accent-dark: #765900;
  --accent-soft: #f2e2b5;
  --warm: #d2a137;
  --shadow: 0 18px 55px rgba(110, 81, 0, 0.12);
  --page-glow: rgba(184, 138, 0, 0.18);
}

button,
select,
input {
  font: inherit;
}

button,
select {
  color: inherit;
}

button {
  cursor: pointer;
}

button:focus-visible,
select:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: 3px solid var(--accent-soft);
  outline-offset: 3px;
}

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

h1,
h2,
h3 {
  letter-spacing: -0.035em;
}

h1 {
  margin-bottom: 1rem;
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  line-height: 0.98;
}

h2 {
  margin-bottom: 0.75rem;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.1;
}

p {
  color: var(--ink-soft);
  line-height: 1.65;
}

#three-background {
  position: fixed;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  opacity: 0.65;
  pointer-events: none;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  color: white;
  background: var(--accent-dark);
  border-radius: var(--radius-small);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 1rem;
  min-height: 5rem;
  padding: 0.75rem clamp(1rem, 4vw, 3rem);
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

body:not(.is-logged-in) .site-header,
body:not(.is-logged-in) .role-switcher,
body:not(.is-logged-in) footer {
  display: none;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0;
  text-align: left;
  background: transparent;
  border: 0;
}

.brand-mark {
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  color: white;
  font-weight: 800;
  background: var(--ink);
  border-radius: 50%;
  place-items: center;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 1rem;
}

.brand small {
  margin-top: 0.1rem;
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.main-nav {
  display: flex;
  justify-content: center;
  gap: 0.25rem;
}

.main-nav button {
  padding: 0.6rem 0.8rem;
  color: var(--ink-soft);
  background: transparent;
  border: 0;
  border-radius: var(--radius-small);
}

.main-nav button:hover,
.main-nav button[aria-current="page"] {
  color: var(--accent-dark);
  background: var(--accent-soft);
}

.session-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.account-chip {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-left: 0.75rem;
  border-left: 1px solid var(--line);
}

.account-chip strong,
.account-chip small {
  display: block;
}

.account-chip small {
  margin-top: 0.1rem;
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.account-chip .button {
  min-height: 2.4rem;
  padding: 0.45rem 0.7rem;
  font-size: 0.78rem;
}

.status-dot {
  width: 0.5rem;
  height: 0.5rem;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 0.25rem var(--accent-soft);
}

.role-switcher {
  display: grid;
  grid-template-columns: auto minmax(6rem, 1fr) auto;
  align-items: center;
  gap: 0.75rem;
  width: min(22rem, 100%);
  margin: 0;
  padding: 0.65rem 0.85rem;
  background: var(--ink);
  border-radius: var(--radius);
}

.progress-switcher {
  grid-template-columns: 1fr;
  width: min(28rem, 100%);
  gap: 0.55rem;
}

.footer-progress-row {
  display: grid;
  grid-template-columns: 5rem minmax(6rem, 1fr) auto;
  align-items: center;
  gap: 0.75rem;
}

.role-switcher label {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.role-switcher select {
  width: 100%;
  padding: 0.55rem 0.6rem;
  color: white;
  background: #25332f;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 0.35rem;
}

.role-switcher strong {
  color: white;
  font-size: 1.2rem;
}

.side-progress-bar {
  height: 0.45rem;
  min-width: 6rem;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.16);
  border-radius: 999px;
}

.side-progress-bar span {
  display: block;
  width: var(--progress, 0%);
  height: 100%;
  background: #80cdbf;
  border-radius: inherit;
}

#exam-side-progress-fill {
  background: #f3c64f;
}

main {
  width: min(var(--page-width), calc(100% - 3rem));
  min-height: calc(100vh - 10rem);
  margin: 0 auto;
}

.view {
  display: none;
  padding: clamp(3.5rem, 7vw, 7rem) 0;
}

.view.is-active {
  display: block;
  animation: view-in 260ms ease-out;
}

@keyframes view-in {
  from {
    opacity: 0;
    transform: translateY(0.5rem);
  }
}

.eyebrow {
  margin-bottom: 1rem;
  color: var(--accent-dark);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(20rem, 0.7fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: center;
  min-height: 32rem;
  padding: 1rem 0 6rem;
}

.landing {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 24rem);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: center;
  min-height: 100vh;
  padding: clamp(2rem, 7vw, 6rem) 0;
}

.landing-copy {
  max-width: 52rem;
}

.landing h1 {
  max-width: 12ch;
  font-size: clamp(2.6rem, 5vw, 4.6rem);
  hyphens: manual;
  overflow-wrap: normal;
}

.landing-list {
  display: grid;
  gap: 0.8rem;
  max-width: 42rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.landing-list li {
  padding: 0.9rem 1rem;
  color: var(--ink-soft);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
}

.login-card {
  display: grid;
  gap: 0.85rem;
  width: 100%;
  padding: clamp(1.25rem, 4vw, 2rem);
  background: var(--surface-solid);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow);
}

.login-card h2 {
  margin-bottom: 0;
}

.login-card label,
.user-create label {
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.login-card select,
.login-card input,
.user-create input,
.user-admin-row input,
.user-admin-row select {
  width: 100%;
  min-height: 3rem;
  padding: 0.7rem 0.8rem;
  color: var(--ink);
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
}

.hero-copy {
  max-width: 48rem;
}

.hero-text {
  max-width: 38rem;
  margin-bottom: 2rem;
  font-size: 1.12rem;
}

.hero-actions,
.question-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.home-updates {
  max-width: 38rem;
  margin-top: 2.25rem;
  padding: 1.15rem 1.25rem;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.home-updates h2 {
  margin: 0.2rem 0 0.45rem;
  font-size: 1.25rem;
}

.home-updates p:last-child {
  margin: 0;
  color: var(--ink-soft);
  white-space: pre-line;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.1rem;
  font-weight: 750;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-small);
  transition:
    transform 160ms ease,
    background 160ms ease,
    border-color 160ms ease;
}

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

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

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

.button-secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.55);
  border-color: var(--line);
}

.button-secondary:hover {
  background: white;
  border-color: #aab7b1;
}

.hero-panel {
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero-panel-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-bottom: 1rem;
  font-size: 0.82rem;
  font-weight: 700;
  border-bottom: 1px solid var(--line);
}

.pill {
  padding: 0.35rem 0.55rem;
  color: var(--accent-dark);
  font-size: 0.68rem;
  background: var(--accent-soft);
  border-radius: 999px;
}

.focus-ring {
  display: grid;
  width: 12rem;
  height: 12rem;
  margin: 2rem auto;
  background: conic-gradient(var(--accent) var(--progress, 0%), var(--line) 0);
  border-radius: 50%;
  place-items: center;
}

.focus-ring::before {
  position: absolute;
  width: 9.25rem;
  height: 9.25rem;
  content: "";
  background: var(--surface-solid);
  border-radius: 50%;
}

.focus-ring div {
  position: relative;
  z-index: 1;
  display: grid;
  text-align: center;
}

.focus-ring strong {
  font-size: 2rem;
}

.focus-ring span {
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.mini-stats,
.analytics-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 0;
}

.mini-stats div,
.analytics-stats div {
  padding: 0.8rem;
  text-align: center;
  border-left: 1px solid var(--line);
}

.mini-stats div:first-child,
.analytics-stats div:first-child {
  border-left: 0;
}

dt {
  color: var(--ink-soft);
  font-size: 0.72rem;
}

dd {
  margin: 0.3rem 0 0;
  font-size: 1.1rem;
  font-weight: 800;
}

.section-heading,
.page-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.page-heading h1 {
  max-width: 56rem;
  font-size: clamp(2.5rem, 5vw, 4.75rem);
}

.page-heading p:not(.eyebrow) {
  max-width: 45rem;
  margin-bottom: 0;
}

.page-heading.compact h1 {
  font-size: clamp(2.25rem, 4vw, 4rem);
}

.action-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding-bottom: 2rem;
}

.action-card {
  position: relative;
  display: grid;
  min-height: 17rem;
  align-content: end;
  padding: 1.5rem;
  overflow: hidden;
  text-align: left;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.action-card:hover {
  background: var(--surface-solid);
  border-color: #aebbb5;
  transform: translateY(-0.25rem);
}

.action-card.featured {
  color: white;
  background: var(--ink);
  border-color: var(--ink);
}

.action-card.featured span {
  color: rgba(255, 255, 255, 0.68);
}

.action-card strong {
  margin-bottom: 0.5rem;
  font-size: 1.35rem;
}

.action-card > span:last-child {
  color: var(--ink-soft);
  line-height: 1.5;
}

.card-index {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  color: var(--ink-soft);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}

.card-icon {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  color: var(--accent);
  font-size: 2.25rem;
}

.file-button {
  cursor: pointer;
}

.file-button input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}

.library-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.filter-button {
  padding: 0.55rem 0.85rem;
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.filter-button.is-active,
.filter-button:hover {
  color: white;
  background: var(--ink);
  border-color: var(--ink);
}

.library-folder-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
  margin-bottom: 1.5rem;
}

.library-folder-nav span {
  color: var(--ink-soft);
  font-weight: 700;
}

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

.document-card {
  display: grid;
  min-height: 13rem;
  padding: 1.25rem;
  text-align: left;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.document-card:hover {
  border-color: var(--accent);
}

.document-card.library-part-a,
.progress-card.progress-part-a {
  background: var(--part-a-soft);
}

.document-card.library-part-b,
.progress-card.progress-part-b {
  background: var(--part-b-soft);
}

.document-card.library-part-c,
.progress-card.progress-part-c {
  background: var(--part-c-soft);
}

.document-card.library-part-d,
.progress-card.progress-part-d {
  background: var(--part-d-soft);
}

.document-card.library-part-e,
.progress-card.progress-part-e {
  background: var(--part-e-soft);
}

.library-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 1rem;
  color: var(--ink-soft);
  background: var(--surface-solid);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.document-card .document-type {
  align-self: start;
  color: var(--accent-dark);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.document-card strong {
  align-self: end;
  margin: 2rem 0 0.4rem;
  font-size: 1.1rem;
  line-height: 1.25;
}

.document-card small {
  color: var(--ink-soft);
}

.reader-panel {
  margin-top: 2rem;
  padding: 1rem;
  background: var(--surface-solid);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow);
}

.reader-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 0.5rem 1rem;
}

.reader-header h2 {
  margin: 0;
}

.icon-button {
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  color: var(--ink);
  font-size: 1.5rem;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 50%;
  place-items: center;
}

#pdf-reader {
  width: 100%;
  height: min(75vh, 56rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.text-reader {
  max-height: 70vh;
  padding: 2rem;
  overflow: auto;
  white-space: pre-wrap;
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  line-height: 1.75;
}

.learning-reader-panel {
  margin-top: 2rem;
  padding: 1rem;
  background: var(--surface-solid);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow);
}

.reader-meta,
.reader-status {
  margin: 0.25rem 0 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.reader-status {
  padding: 0 0.5rem 1rem;
}

.learning-chapters {
  display: flex;
  gap: 15px;
  padding: 0.25rem 0 1rem;
  overflow-x: auto;
  scroll-padding-inline: 30px;
  scroll-snap-type: x mandatory;
}

.learning-chapter {
  flex: 0 0 calc(100% - 60px);
  max-height: min(68vh, 44rem);
  padding: 1.35rem;
  overflow-y: auto;
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  scroll-snap-align: center;
}

.learning-chapter-index {
  color: var(--accent-dark);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.learning-chapter h3 {
  margin: 0.4rem 0 1rem;
  font-size: 1.35rem;
  line-height: 1.2;
}

.learning-chapter h4 {
  margin: 1.1rem 0 0.45rem;
  font-size: 1rem;
}

.learning-chapter p {
  margin: 0 0 0.85rem;
  line-height: 1.75;
}

.learning-mark {
  position: relative;
  padding: 0.05rem 0.2rem;
  border-radius: 0.25rem;
}

.learning-mark::before {
  content: attr(data-symbol);
  position: absolute;
  top: 50%;
  left: -1.05rem;
  display: grid;
  width: 0.85rem;
  height: 0.85rem;
  color: white;
  font-size: 0.58rem;
  font-weight: 900;
  line-height: 1;
  border-radius: 50%;
  transform: translateY(-50%);
  place-items: center;
}

.learning-mark-no-icon::before {
  content: none;
}

.learning-mark-history {
  background: #dff4d9;
}

.learning-mark-history::before {
  background: #218838;
}

.learning-mark-mustKnow {
  background: #ffd6d6;
}

.learning-mark-mustKnow::before {
  background: #b91c1c;
}

.learning-mark-exam1 {
  background: #ffe7c6;
}

.learning-mark-exam1::before {
  background: #d97706;
}

.learning-mark-exam2 {
  background: #ffd19b;
}

.learning-mark-exam2::before {
  background: #c75a00;
}

.learning-mark-exam3 {
  background: #ffb46b;
}

.learning-mark-exam3::before {
  background: #a33a00;
}

.learning-mark-calculation {
  background: #dcebff;
}

.learning-mark-calculation::before {
  background: #1d4ed8;
}

.learning-mark-understanding {
  background: #fff9a8;
}

.learning-mark-understanding::before {
  background: #767000;
}

.learning-legend {
  margin: 0.5rem;
  padding: 0.85rem 1rem;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.learning-legend summary {
  cursor: pointer;
  font-weight: 800;
}

.learning-legend-list {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.85rem;
}

.legend-item {
  display: flex;
  gap: 0.65rem;
  align-items: start;
  padding: 0.55rem 0.65rem;
  border-radius: 0.65rem;
}

.legend-symbol {
  display: grid;
  flex: 0 0 1.35rem;
  width: 1.35rem;
  height: 1.35rem;
  color: white;
  font-size: 0.75rem;
  font-weight: 900;
  border-radius: 50%;
  place-items: center;
}

.learning-mark-history .legend-symbol {
  background: #218838;
}

.learning-mark-mustKnow .legend-symbol {
  background: #b91c1c;
}

.learning-mark-exam1 .legend-symbol {
  background: #d97706;
}

.learning-mark-exam2 .legend-symbol {
  background: #c75a00;
}

.learning-mark-exam3 .legend-symbol {
  background: #a33a00;
}

.learning-mark-calculation .legend-symbol {
  background: #1d4ed8;
}

.learning-mark-understanding .legend-symbol {
  background: #767000;
}

.training-layout {
  display: grid;
  grid-template-columns: 18rem minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.topic-panel {
  padding: 1.25rem;
  color: white;
  background: var(--ink);
  border-radius: var(--radius);
}

.topic-panel h2 {
  margin-top: 0.75rem;
  font-size: 1.45rem;
}

.topic-panel p,
.topic-panel small {
  color: rgba(255, 255, 255, 0.66);
}

.topic-select-label {
  display: block;
  margin-top: 1rem;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.topic-select {
  width: 100%;
  margin-top: 0.45rem;
  padding: 0.7rem 0.8rem;
  color: var(--ink);
  background: var(--surface-solid);
  border: 0;
  border-radius: 0.85rem;
  font: inherit;
}

.topic-label {
  color: #8bd0c4;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.topic-meter {
  height: 0.4rem;
  margin: 2rem 0 0.65rem;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.16);
  border-radius: 999px;
}

.topic-meter span {
  display: block;
  width: var(--progress, 0%);
  height: 100%;
  background: #80cdbf;
  border-radius: inherit;
  transition: width 300ms ease;
}

.question-count {
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.question-card {
  min-height: 30rem;
  padding: clamp(1.25rem, 4vw, 3rem);
  background: var(--surface-solid);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow);
}

#practice-card {
  position: relative;
  padding-right: clamp(3.5rem, 6vw, 5rem);
}

.practice-question-id {
  position: absolute;
  top: 50%;
  right: 1rem;
  color: var(--ink-soft);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  opacity: 0.32;
  transform: translateY(-50%) rotate(180deg);
  writing-mode: vertical-rl;
}

.question-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
  color: var(--accent-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.question-card h2 {
  max-width: 58rem;
  margin-bottom: 2rem;
  font-size: clamp(1.35rem, 2.5vw, 2.15rem);
  white-space: pre-line;
}

fieldset {
  display: grid;
  gap: 0.75rem;
  min-width: 0;
  margin: 0 0 1.5rem;
  padding: 0;
  border: 0;
}

.answer-option {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  padding: 1rem;
  background: #fafaf6;
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  cursor: pointer;
  line-height: 1.5;
}

.answer-option:hover {
  border-color: #9eb0a9;
}

.feedback.hint {
  color: var(--ink);
  background: var(--accent-soft);
  border-color: var(--accent);
  white-space: pre-line;
}

.answer-option:has(input:checked) {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.answer-option input {
  width: 1.15rem;
  height: 1.15rem;
  margin-top: 0.15rem;
  accent-color: var(--accent);
}

#practice-answers .answer-option {
  grid-template-columns: auto 1.6rem minmax(0, 1fr);
}

.answer-index {
  color: var(--accent-dark);
  font-weight: 800;
  text-align: center;
}

.feedback-heading,
.feedback-subheading {
  display: block;
  margin-bottom: 0.35rem;
}

.feedback-subheading {
  margin-top: 0.8rem;
}

.feedback p,
.feedback ul {
  margin: 0;
}

.feedback ul {
  padding-left: 1.2rem;
}

.feedback-completed {
  margin-top: 0.8rem !important;
  font-weight: 700;
}

.answer-option.is-correct {
  background: var(--success-soft);
  border-color: var(--success);
}

.answer-option.is-wrong {
  background: var(--danger-soft);
  border-color: var(--danger);
}

.feedback {
  margin: 0 0 1.25rem;
  padding: 1rem;
  border-left: 0.25rem solid currentColor;
  border-radius: 0 var(--radius-small) var(--radius-small) 0;
}

.feedback.correct {
  color: var(--success);
  background: var(--success-soft);
}

.feedback.wrong {
  color: var(--danger);
  background: var(--danger-soft);
}

.loading-state {
  display: grid;
  gap: 1rem;
}

.loading-line,
.loading-block {
  display: block;
  background: #e7e9e4;
  border-radius: var(--radius-small);
  animation: pulse 1.2s infinite alternate;
}

.loading-line {
  width: 85%;
  height: 1.5rem;
}

.loading-line.short {
  width: 55%;
}

.loading-block {
  height: 14rem;
  margin-top: 1.5rem;
}

@keyframes pulse {
  to {
    opacity: 0.45;
  }
}

.exam-intro {
  display: grid;
  grid-template-columns: repeat(3, 1fr) auto;
  gap: 1px;
  align-items: stretch;
  overflow: hidden;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
}

.exam-intro > div {
  display: grid;
  align-content: center;
  min-height: 13rem;
  padding: 1.5rem;
  background: var(--surface-solid);
}

.exam-intro > div span:last-child {
  max-width: 12rem;
  color: var(--ink-soft);
  line-height: 1.45;
}

.large-number {
  margin-bottom: 0.3rem;
  color: var(--accent-dark);
  font-size: 3.5rem;
  font-weight: 850;
}

.exam-intro .button {
  margin: auto 1.5rem;
}

.exam-session {
  display: grid;
  grid-template-columns: 13rem minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.exam-progress {
  padding: 1.25rem;
  background: var(--ink);
  border-radius: var(--radius);
}

.exam-progress div {
  display: grid;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.78rem;
}

.exam-progress strong {
  color: white;
  font-size: 1.75rem;
}

.exam-question-text {
  margin: 0.75rem 0 1.5rem;
  color: var(--ink);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 700;
  line-height: 1.45;
}

progress {
  width: 100%;
  height: 0.45rem;
  margin-top: 1.25rem;
  overflow: hidden;
  appearance: none;
  border: 0;
  border-radius: 999px;
}

progress::-webkit-progress-bar {
  background: rgba(255, 255, 255, 0.16);
}

progress::-webkit-progress-value {
  background: #80cdbf;
}

.exam-result {
  max-width: 45rem;
  margin: 0 auto;
  padding: clamp(2rem, 6vw, 5rem);
  text-align: center;
  background: var(--surface-solid);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow);
}

.result-score {
  display: grid;
  width: 14rem;
  height: 14rem;
  align-content: center;
  margin: 2rem auto;
  background: var(--accent-soft);
  border-radius: 50%;
}

.result-score strong {
  color: var(--accent-dark);
  font-size: 3rem;
}

.result-score span {
  color: var(--ink-soft);
  font-size: 0.8rem;
}

.progress-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.progress-card {
  display: grid;
  justify-items: center;
  padding: 1.5rem 1rem;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.small-ring {
  display: grid;
  width: 8rem;
  height: 8rem;
  margin-bottom: 1.25rem;
  background: conic-gradient(
    var(--success) 0 var(--correct-progress, 0%),
    var(--accent) var(--correct-progress, 0%) var(--answered-progress, 0%),
    var(--line) var(--answered-progress, 0%) 100%
  );
  border-radius: 50%;
  place-items: center;
}

.small-ring::before {
  width: 6rem;
  height: 6rem;
  content: "";
  background: var(--surface-solid);
  border-radius: 50%;
}

.small-ring strong {
  position: absolute;
  font-size: 1.35rem;
}

.progress-card h2 {
  margin: 0;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.progress-card p {
  margin: 0.35rem 0 0;
  font-size: 0.78rem;
}

.insight-panel,
.author-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
  margin-top: 1.5rem;
  padding: clamp(1.25rem, 4vw, 2.25rem);
  background: var(--surface-solid);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
}

.insight-panel h2,
.author-panel h2 {
  margin-bottom: 0.35rem;
}

.insight-panel p,
.author-panel p {
  max-width: 44rem;
  margin-bottom: 0;
}

.assigned-users-panel {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
  padding: clamp(1.25rem, 4vw, 2.25rem);
  background: var(--surface-solid);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
}

.assigned-users-panel h2 {
  margin-bottom: 0.35rem;
}

.assigned-users-panel p {
  max-width: 44rem;
  margin-bottom: 0;
}

.assigned-users-list {
  display: grid;
  gap: 0.75rem;
}

.assigned-user-card {
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.assigned-user-header {
  display: grid;
  grid-template-columns: minmax(12rem, 1fr) auto;
  gap: 1rem;
  align-items: start;
}

.assigned-user-header h3 {
  margin: 0;
  font-size: 1rem;
}

.assigned-user-header p {
  margin-top: 0.2rem;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.assigned-user-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(5.5rem, 1fr));
  gap: 0.5rem;
  margin: 0;
}

.assigned-user-meta div {
  padding: 0.65rem 0.75rem;
  background: var(--surface-solid);
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
}

.assigned-user-meta dt {
  color: var(--ink-soft);
  font-size: 0.68rem;
  font-weight: 700;
}

.assigned-user-meta dd {
  margin: 0.1rem 0 0;
  font-weight: 800;
}

.user-progress-details {
  margin-top: 1rem;
  border-top: 1px solid var(--line);
}

.user-progress-details summary {
  width: max-content;
  max-width: 100%;
  margin-top: 0.85rem;
  padding: 0.65rem 0.9rem;
  cursor: pointer;
  color: var(--accent-strong);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 800;
}

.user-progress-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.user-progress-detail-section h3 {
  margin: 0 0 0.6rem;
  font-size: 0.86rem;
}

.user-progress-detail-list {
  display: grid;
  gap: 0.45rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.user-progress-line {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.65rem;
  align-items: center;
  padding: 0.7rem 0.8rem;
  background: var(--surface-solid);
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  font-size: 0.78rem;
}

.user-progress-line span {
  color: var(--ink-soft);
}

.user-progress-line strong {
  color: var(--accent-strong);
}

.assigned-users-empty {
  padding: 1rem;
  color: var(--ink-soft);
  background: var(--surface);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}

.author-panel {
  grid-template-columns: 1fr auto;
}

.admin-updates-panel {
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 30rem);
}

.admin-updates-panel > label,
.admin-updates-panel > textarea,
.admin-updates-panel > button,
.admin-updates-panel > .import-result {
  grid-column: 2;
}

.admin-updates-panel > label {
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.admin-updates-panel textarea {
  width: 100%;
  padding: 0.8rem;
  color: var(--ink);
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  resize: vertical;
}

.user-create {
  display: grid;
  gap: 0.6rem;
  min-width: 16rem;
}

.user-admin-list {
  display: grid;
  grid-column: 1 / -1;
  gap: 0.6rem;
}

.user-admin-row {
  display: grid;
  grid-template-columns: minmax(14rem, 1fr) minmax(0, 2fr) auto;
  gap: 1rem;
  align-items: start;
  padding: 0.9rem 1rem;
  background: var(--surface-solid);
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
}

.user-admin-row strong,
.user-admin-row small {
  display: block;
}

.user-admin-row small {
  margin-top: 0.15rem;
  color: var(--ink-soft);
}

.user-admin-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  gap: 0.65rem;
  min-width: 0;
}

.admin-select-field {
  display: grid;
  gap: 0.25rem;
}

.admin-email-control {
  display: grid;
  grid-template-columns: minmax(10rem, 1fr) auto;
  gap: 0.5rem;
}

.admin-email-field {
  grid-column: 1 / -1;
}

.admin-email-control .button,
.warning-button {
  min-height: 3rem;
  white-space: nowrap;
}

.admin-select-field span {
  color: var(--ink-soft);
  font-size: 0.7rem;
  font-weight: 700;
}

.user-admin-row .danger-button {
  justify-self: end;
  color: var(--danger);
  background: var(--danger-soft);
  border-color: rgba(164, 60, 50, 0.2);
}

.user-admin-row .warning-button {
  justify-self: start;
}

.import-result {
  grid-column: 1 / -1;
  margin: 0;
}

.group-create {
  display: grid;
  gap: 0.55rem;
  min-width: min(22rem, 100%);
}

.group-create textarea {
  resize: vertical;
}

.trainer-groups-list,
.member-groups-list {
  display: grid;
  grid-column: 1 / -1;
  gap: 0.85rem;
}

.trainer-group-card,
.member-group-card {
  display: grid;
  gap: 0.7rem;
  padding: 1rem;
  background: var(--surface-solid);
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
}

.trainer-group-card h3,
.member-group-card h3 {
  margin: 0;
}

.trainer-group-card p,
.member-group-card p {
  margin: 0;
  color: var(--ink-soft);
  white-space: pre-line;
}

.group-add-member {
  display: grid;
  grid-template-columns: minmax(12rem, 1fr) auto;
  gap: 0.5rem;
}

.group-member-list {
  display: grid;
  gap: 0.6rem;
}

.group-member-row {
  display: grid;
  grid-template-columns: minmax(14rem, 1fr) minmax(0, 2fr) auto;
  gap: 0.8rem;
  align-items: start;
  padding: 0.8rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
}

.group-member-row strong,
.group-member-row small {
  display: block;
}

.group-member-row small {
  margin-top: 0.2rem;
  color: var(--ink-soft);
}

.group-member-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  gap: 0.55rem;
}

@media (max-width: 1100px) {
  .group-member-row {
    grid-template-columns: 1fr;
  }
}

footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  width: min(var(--page-width), calc(100% - 3rem));
  margin: 0 auto;
  padding: 2rem 0 3rem;
  color: var(--ink-soft);
  font-size: 0.75rem;
  border-top: 1px solid var(--line);
}

footer > div {
  display: grid;
  gap: 0.35rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  white-space: nowrap;
  border: 0;
  clip: rect(0, 0, 0, 0);
}

[hidden] {
  display: none !important;
}

@media (max-width: 1100px) {
  .site-header {
    grid-template-columns: auto 1fr;
  }

  .session-indicator {
    display: none;
  }

  .account-chip {
    justify-self: end;
  }

  .main-nav {
    justify-content: end;
  }

  .role-switcher {
    grid-template-columns: 1fr;
    width: 100%;
  }

  .document-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .progress-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .exam-intro {
    grid-template-columns: repeat(3, 1fr);
  }

  .exam-intro .button {
    grid-column: 1 / -1;
    margin: 1rem;
  }

  .landing {
    grid-template-columns: 1fr;
    max-width: 48rem;
    min-height: auto;
    margin: 0 auto;
  }

  .landing h1 {
    max-width: 13ch;
  }

  .user-admin-row {
    grid-template-columns: 1fr;
  }

  .assigned-user-header {
    grid-template-columns: 1fr;
  }

  .user-admin-row .danger-button {
    justify-self: start;
  }
}

@media (max-width: 780px) {
  .site-header {
    position: relative;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    padding-bottom: 0;
  }

  .main-nav {
    justify-content: start;
    gap: 0;
    overflow-x: auto;
    border-top: 1px solid var(--line);
  }

  .main-nav button {
    flex: 0 0 auto;
    padding: 0.75rem 0.7rem;
  }

  main,
  footer {
    width: min(100% - 2rem, var(--page-width));
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .progress-switcher {
    width: 100%;
  }

  .view {
    padding: 3rem 0 6rem;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-bottom: 4rem;
  }

  .landing {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-panel {
    max-width: 30rem;
  }

  .action-grid,
  .document-grid,
  .training-layout,
  .exam-session,
  .insight-panel,
  .author-panel,
  .user-progress-detail-grid,
  .user-admin-row {
    grid-template-columns: 1fr;
  }

  .admin-updates-panel > label,
  .admin-updates-panel > textarea,
  .admin-updates-panel > button,
  .admin-updates-panel > .import-result {
    grid-column: 1;
  }

  .user-admin-controls {
    grid-template-columns: repeat(2, minmax(9rem, 1fr));
  }

  .assigned-user-meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .action-card {
    min-height: 13rem;
  }

  .page-heading,
  .section-heading {
    display: grid;
    align-items: start;
  }

  .question-count {
    justify-self: start;
  }

  .exam-intro {
    grid-template-columns: 1fr;
  }

  .exam-intro > div {
    min-height: 9rem;
  }

  .exam-intro .button {
    grid-column: auto;
  }

  .exam-progress {
    display: flex;
    align-items: center;
    gap: 1rem;
    justify-content: space-between;
  }

  .exam-progress progress {
    max-width: 45%;
    margin: 0;
  }

  .analytics-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  footer {
    display: grid;
  }
}

@media (max-width: 480px) {
  .brand small {
    display: none;
  }

  h1 {
    font-size: 2.65rem;
  }

  .hero-actions,
  .question-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .mini-stats,
  .analytics-stats {
    grid-template-columns: 1fr 1fr;
  }

  .progress-grid {
    grid-template-columns: 1fr;
  }

  .user-admin-controls {
    grid-template-columns: 1fr;
  }

  .admin-email-control {
    grid-template-columns: 1fr;
  }

  .assigned-user-meta {
    grid-template-columns: 1fr;
  }

  .mini-stats div:last-child,
  .analytics-stats div:last-child {
    grid-column: 1 / -1;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .question-card {
    padding: 1.1rem;
    border-radius: var(--radius);
  }

  footer {
    align-items: stretch;
    flex-direction: column;
  }

}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  #three-background {
    display: none;
  }
}