:root {
  color-scheme: light;
  --primary: #0d3553;
  --primary-dark: #00263c;
  --hero-blue: #1d6ba6;
  --horizon-blue: #0095c8;
  --accent: #15eac4;
  --success: #157347;
  --warning: #b76e00;
  --danger: #b42318;
  --bg: #f5f7fa;
  --surface: #ffffff;
  --surface-alt: #eef3f8;
  --border: #d6dee8;
  --text: #1d2939;
  --muted: #667085;
  --shadow: 0 10px 28px rgba(16, 24, 40, 0.08);
  --radius: 16px;
  --focus: rgba(21, 234, 196, 0.55);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Roboto, "Segoe UI", Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

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

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
.skip-link:focus {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 10;
  background: var(--accent);
  color: var(--primary-dark);
  padding: 0.6rem 0.9rem;
  font-weight: 800;
}

.skip-link:focus {
  top: 1rem;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.25rem;
  padding: 18px 28px;
  border-top: 6px solid var(--horizon-blue);
  background: linear-gradient(135deg, var(--primary), var(--hero-blue));
  color: #ffffff;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  background: #ffffff;
  color: var(--primary);
  font-size: 15px;
  font-weight: 900;
}

.brand h1,
h2 {
  font-family: Merriweather, Georgia, serif;
  font-style: italic;
  font-weight: 800;
}

.brand h1 {
  margin: 0;
  font-size: clamp(1.7rem, 4vw, 2.25rem);
  line-height: 1.15;
}

.brand p {
  margin: 3px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.9rem;
}

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

h2 {
  margin-bottom: 0;
  color: var(--primary-dark);
  font-size: 1.5rem;
  line-height: 1.2;
}

h3 {
  margin-bottom: 0.85rem;
  color: var(--primary-dark);
  font-size: 1.05rem;
  font-weight: 800;
}

h4 {
  margin: 0 0 0.65rem;
  color: var(--primary-dark);
  font-size: 0.95rem;
  font-weight: 800;
}

.eyebrow {
  margin: 0 0 0.25rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.small {
  color: var(--muted);
  font-size: 0.86rem;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.session-status,
.role-badge,
.pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.4rem 0.75rem;
  background: var(--surface-alt);
  color: var(--primary-dark);
  font-size: 0.86rem;
  font-weight: 800;
}

.session-status {
  max-width: min(320px, 55vw);
  overflow: hidden;
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.role-badge {
  text-transform: capitalize;
}

.app-shell {
  width: min(1500px, calc(100% - 2rem));
  margin: 24px auto 36px;
}

.auth-panel,
.sidebar,
.workspace,
.form-surface,
.data-surface,
.metric-tile,
.flash-message {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.auth-panel {
  width: min(470px, 100%);
  margin: clamp(2rem, 8vh, 4.5rem) auto;
  padding: 1.35rem;
  border-top: 5px solid var(--horizon-blue);
}

.auth-panel h2 {
  margin-bottom: 1rem;
}

.form-stack,
.form-surface {
  display: grid;
  gap: 0.95rem;
}

.form-surface,
.data-surface,
.workspace {
  padding: 1.1rem;
}

.form-surface,
.data-surface {
  box-shadow: none;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

label span {
  display: block;
  margin-bottom: 0.35rem;
  color: #344054;
  font-size: 0.84rem;
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #c8d2df;
  border-radius: 10px;
  padding: 0.68rem 0.75rem;
  background: #ffffff;
  color: var(--text);
}

textarea {
  min-height: 118px;
  resize: vertical;
  line-height: 1.45;
}

button {
  border: 0;
  cursor: pointer;
  transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease, transform 0.16s ease;
}

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

button:disabled,
button:disabled:hover {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

.primary-button,
.secondary-button,
.link-button,
.nav-item,
.table-button,
.metric-tile {
  font-weight: 800;
}

.primary-button {
  border: 1px solid var(--accent);
  border-radius: 10px;
  background: var(--accent);
  color: var(--primary-dark);
  padding: 0.72rem 0.95rem;
}

.primary-button:hover {
  border-color: #99e0dc;
  background: #99e0dc;
  color: var(--primary-dark);
}

.secondary-button,
.table-button {
  border: 1px solid var(--primary);
  border-radius: 10px;
  background: #ffffff;
  color: var(--primary);
}

.secondary-button {
  padding: 0.55rem 0.8rem;
}

.table-button {
  padding: 0.42rem 0.62rem;
  white-space: nowrap;
}

.secondary-button:hover,
.table-button:hover {
  border-color: var(--primary-dark);
  background: var(--surface-alt);
  color: var(--primary-dark);
}

.link-button {
  border: 0;
  background: transparent;
  color: var(--primary);
  padding: 0.25rem 0.1rem;
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.link-button:hover {
  color: var(--hero-blue);
}

.auth-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
  justify-content: center;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.form-message,
.flash-message {
  min-height: 1.4rem;
  margin-bottom: 0;
  color: var(--muted);
}

.form-message.error,
.flash-message.error {
  color: var(--danger);
}

.flash-message {
  margin: 1rem 0;
  border-left: 5px solid var(--accent);
  padding: 0.7rem 0.85rem;
  background: #fff8e6;
  box-shadow: none;
}

.flash-message.error {
  border-left-color: var(--danger);
  background: #fee4e2;
}

.app-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: 16px;
  display: grid;
  gap: 16px;
  height: fit-content;
  padding: 18px;
  border-color: var(--primary);
  background: var(--primary);
  color: #ffffff;
}

.sidebar-heading {
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.24);
}

.sidebar-heading .eyebrow,
.sidebar-heading h2 {
  color: #ffffff;
}

.sidebar-heading h2 {
  font-size: 1.35rem;
}

.sidebar-nav {
  display: grid;
  gap: 8px;
}

.nav-item {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  padding: 0.72rem 0.8rem;
  text-align: left;
}

.nav-item:hover {
  border-color: rgba(255, 255, 255, 0.52);
  background: rgba(255, 255, 255, 0.2);
}

.nav-item.active {
  border-color: #99e0dc;
  background: #99e0dc;
  color: var(--primary-dark);
}

.workspace {
  min-height: 760px;
  min-width: 0;
  padding: 22px;
}

.workspace-header,
.surface-heading {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

.workspace-header {
  margin-bottom: 1rem;
}

.surface-heading {
  margin-bottom: 0.9rem;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 1rem;
}

.metric-tile {
  display: grid;
  gap: 0.35rem;
  min-height: 112px;
  padding: 1rem;
  color: var(--text);
  text-align: left;
}

.metric-tile:not(.static):hover {
  border-color: var(--horizon-blue);
  background: #fbfcfe;
}

.metric-tile span {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 800;
}

.metric-tile strong {
  color: var(--primary-dark);
  font-size: 1.75rem;
  overflow-wrap: anywhere;
}

.metric-tile.static {
  cursor: default;
}

.split-layout {
  display: grid;
  grid-template-columns: 370px minmax(0, 1fr);
  gap: 1rem;
}

.split-layout.wide-form {
  grid-template-columns: minmax(370px, 460px) minmax(0, 1fr);
}

.toolbar {
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  background: var(--surface-alt);
}

.toolbar label {
  display: block;
  width: min(560px, 100%);
}

.table-scroll {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  min-width: 620px;
  border: 1px solid var(--border);
  border-collapse: collapse;
  border-radius: 10px;
  overflow: hidden;
  background: #ffffff;
}

th,
td {
  padding: 0.72rem 0.8rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--primary-dark);
  color: #ffffff;
  font-size: 0.84rem;
  font-weight: 800;
}

tr:last-child td {
  border-bottom: 0;
}

tbody tr:hover td {
  background: #fbfcfe;
}

.selected-row td {
  background: #e7fbf7;
}

.table-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.empty-state {
  margin: 0;
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 1rem;
  background: #fbfcfe;
  color: var(--muted);
}

.builder-shell {
  margin: -22px;
}

.tabs {
  display: flex;
  gap: 8px;
  padding: 14px 22px 0;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  background: #ffffff;
}

.tab {
  border: 1px solid transparent;
  border-bottom: 0;
  border-radius: 12px 12px 0 0;
  padding: 12px 16px;
  background: transparent;
  color: var(--muted);
  font-weight: 800;
  white-space: nowrap;
}

.tab:hover {
  border-color: #c8f7f2;
  background: #c8f7f2;
  color: var(--primary-dark);
}

.tab.active {
  border-color: #99e0dc;
  background: #99e0dc;
  color: var(--primary-dark);
}

.builder-layout {
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  gap: 22px;
  padding: 24px 22px 22px;
}

.builder-layout.full-width {
  grid-template-columns: minmax(0, 1fr);
}

.builder-workspace {
  min-width: 0;
}

.side-panel,
.form-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.side-panel {
  position: sticky;
  top: 16px;
  height: fit-content;
  padding: 18px;
  border-color: var(--primary);
  background: var(--primary);
  color: #ffffff;
}

.side-panel h3,
.side-panel .small,
.side-panel .howto-list {
  color: #ffffff;
}

.side-panel .pill,
.side-panel .settings-nav a {
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
}

.side-panel .divider {
  background: rgba(255, 255, 255, 0.28);
}

.section-title {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.section-title h2,
.section-title h3 {
  margin: 0;
}

.divider {
  height: 1px;
  margin: 18px 0;
  background: var(--border);
}

.howto-list {
  padding-left: 20px;
  line-height: 1.55;
  color: #344054;
}

.settings-nav {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.settings-nav a {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  background: var(--surface-alt);
  color: var(--text);
  font-size: 14px;
  text-decoration: none;
}

.screen {
  display: none;
}

.screen.active {
  display: block;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.form-card {
  margin-bottom: 16px;
  padding: 18px;
  box-shadow: none;
}

.field {
  margin-bottom: 14px;
}

.embedded-form {
  display: grid;
  gap: 12px;
}

input[readonly] {
  background: var(--surface-alt);
  color: var(--muted);
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid #eef2f6;
  color: #344054;
}

.toggle-row:last-child {
  border-bottom: 0;
}

.toggle-row span {
  display: grid;
  gap: 2px;
}

.toggle-row small {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 500;
}

.toggle-row input[type="checkbox"] {
  width: 48px;
  height: 26px;
  flex: 0 0 auto;
  accent-color: var(--primary);
}

.pill.good {
  background: #e7f6ed;
  color: var(--success);
}

.pill.warn {
  background: #fff2cc;
  color: var(--warning);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0;
}

.metric-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  background: #ffffff;
}

.metric-card strong {
  display: block;
  margin-top: 5px;
  color: var(--primary-dark);
  font-size: 28px;
  overflow-wrap: anywhere;
}

.preview-frame {
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  background: #fbfcfe;
}

.learner-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
  padding: 16px 20px;
  background: #f8fafc;
}

.learner-header.inline-preview {
  margin-bottom: 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
}

.learner-body {
  padding: 24px;
}

.instructions-box,
.locked-passage,
.typing-box {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #ffffff;
  padding: 18px;
  line-height: 1.65;
  margin-bottom: 18px;
}

.locked-passage {
  background: #f8fafc;
  user-select: none;
  font-size: 17px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.typing-box {
  min-height: 160px;
  color: var(--text);
}

.comparison {
  display: grid;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  overflow-x: auto;
  background: #f8fafc;
  font-family: "Courier New", monospace;
  line-height: 1.8;
}

.comparison-line {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.comparison-note {
  color: var(--muted);
  font-size: 13px;
}

.typed-ok {
  border-bottom: 2px solid var(--success);
  background: #d1fadf;
  color: #054f31;
}

.typed-error {
  border-bottom: 2px solid var(--danger);
  background: #fee4e2;
  color: #7a271a;
}

.error {
  border-bottom: 2px solid var(--danger);
  background: #fee4e2;
  color: #7a271a;
}

.missing {
  border-bottom: 2px solid var(--warning);
  background: #fef0c7;
  color: #7a4d00;
}

.feedback-card {
  border-top: 5px solid var(--horizon-blue);
}

.feedback-group {
  margin-top: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  background: #f9f9f9;
}

.feedback-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 20px;
  line-height: 1.55;
}

.status-pass {
  color: var(--success) !important;
}

.status-fail {
  color: var(--danger) !important;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.sticky-actions {
  position: sticky;
  bottom: 0;
  z-index: 2;
  border-top: 1px solid var(--border);
  padding: 14px 0 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0), #ffffff 28%);
}

.banner {
  margin-bottom: 18px;
  border-left: 5px solid var(--accent);
  border-radius: 12px;
  padding: 14px 16px;
  background: #fff8e6;
}

.scorm-data {
  max-height: 420px;
  overflow: auto;
  border-radius: 14px;
  padding: 16px;
  background: #0b1220;
  color: #d0d5dd;
  font-family: "Courier New", monospace;
  font-size: 13px;
  line-height: 1.6;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.tier-table {
  width: 100%;
  margin-top: 14px;
  border: 1px solid var(--border);
  border-collapse: collapse;
  border-radius: 10px;
  overflow: hidden;
}

.tier-table thead {
  background: var(--primary-dark);
  color: #ffffff;
}

.tier-table th,
.tier-table td {
  padding: 10px 12px;
  border-top: 1px solid var(--border);
  font-size: 13px;
}

.tier-table th {
  border-top: 0;
  text-align: left;
}

.a11y-large-text {
  font-size: 18px;
}

.a11y-large-text .learner-header,
.a11y-large-text .instructions-box,
.a11y-large-text .locked-passage,
.a11y-large-text .typing-box,
.a11y-large-text .metric-card,
.a11y-large-text .form-card {
  font-size: 18px;
  line-height: 1.85;
}

.a11y-large-text .locked-passage {
  font-size: 21px;
}

.a11y-high-contrast,
.a11y-high-contrast .learner-header,
.a11y-high-contrast .learner-body,
.a11y-high-contrast .instructions-box,
.a11y-high-contrast .locked-passage,
.a11y-high-contrast .typing-box,
.a11y-high-contrast .metric-card,
.a11y-high-contrast .form-card,
.a11y-high-contrast .feedback-group,
.a11y-high-contrast .comparison {
  border-color: #ffffff;
  background: #000000;
  color: #ffffff;
  box-shadow: none;
}

.a11y-high-contrast h2,
.a11y-high-contrast h3,
.a11y-high-contrast h4,
.a11y-high-contrast .small,
.a11y-high-contrast .metric-card strong {
  color: #ffffff;
}

.a11y-high-contrast .typed-ok {
  background: #00ff66;
  color: #000000;
}

.a11y-high-contrast .typed-error {
  background: #ff4d4d;
  color: #000000;
}

@media (max-width: 1000px) {
  .app-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-actions {
    justify-content: flex-start;
  }

  .app-shell {
    width: min(100% - 1rem, 1500px);
    margin-top: 18px;
  }

  .app-layout,
  .metrics-grid,
  .builder-layout,
  .split-layout,
  .split-layout.wide-form,
  .form-grid,
  .grid-2,
  .grid-3,
  .metrics {
    display: block;
  }

  .sidebar {
    position: static;
    margin-bottom: 1rem;
  }

  .sidebar-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .workspace,
  .data-surface,
  .role-badge {
    margin-top: 0.75rem;
  }

  .side-panel {
    position: static;
    margin-bottom: 1rem;
  }

  .form-surface {
    margin-bottom: 1rem;
  }
}

@media (max-width: 560px) {
  .app-header {
    padding: 16px;
  }

  .brand {
    align-items: flex-start;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
    font-size: 13px;
  }

  .brand h1 {
    font-size: 1.45rem;
  }

  .sidebar-nav {
    grid-template-columns: 1fr;
  }

  .workspace {
    padding: 16px;
  }

  .auth-panel {
    margin-top: 1rem;
  }
}