@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  --color-bg: #0A0A0A;
  --color-surface: #111111;
  --color-surface-2: #1A1A1A;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.16);
  --color-text: #FAFAFA;
  --color-text-secondary: #A3A3A3;
  --color-text-muted: #737373;
  --color-text-subtle: #525252;
  --color-accent: #3B82F6;
  --color-accent-hover: #60A5FA;
  --color-danger: #EF4444;
  --color-success: #22C55E;
  --color-overlay: rgba(0, 0, 0, 0.7);

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', monospace;

  --fs-xxs: 0.6875rem;
  --fs-xs: 0.75rem;
  --fs-sm: 0.8125rem;
  --fs-md: 0.9375rem;
  --fs-lg: 1.0625rem;
  --fs-xl: clamp(1.15rem, 1.6vw, 1.4rem);
  --fs-2xl: clamp(1.5rem, 2.8vw, 2rem);
  --fs-3xl: clamp(1.85rem, 4vw, 2.75rem);

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 10px;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  color: var(--color-text-secondary);
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  line-height: 1.5;
  overflow-x: hidden;
  background: var(--color-bg);
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.4;
  background-image:
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 100% 32px, 32px 100%;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--color-text);
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: var(--fs-3xl);
  margin-bottom: 0.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

h2 {
  font-size: var(--fs-2xl);
  margin-bottom: 0.65rem;
}

h3 {
  font-size: var(--fs-xl);
}

h4 {
  margin-bottom: 0.5rem;
  font-size: var(--fs-lg);
  font-weight: 600;
}

p {
  margin: 0;
  color: var(--color-text-secondary);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-accent);
}

/* ---- Header ---- */
.site-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.6rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1rem;
}

.brand-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.brand-logo {
  height: 1.6em;
  width: auto;
}

.brand-link:hover {
  color: var(--color-text);
  text-decoration: none;
  opacity: 0.85;
}

.brand-tag {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  grid-column: 1 / -1;
}

.main-nav a {
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  padding: 0.35rem 0.65rem;
  text-decoration: none;
  transition: color 0.15s ease, background 0.15s ease;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.04);
}

.main-nav a[aria-current='page'] {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--color-border);
}

.auth-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  justify-self: end;
  text-align: right;
  gap: 0.5rem;
  grid-column: 2;
  grid-row: 1;
}

/* ---- Layout ---- */
.shell {
  max-width: 1100px;
  margin: 1.25rem auto 3rem;
  padding: 0 1.5rem;
  display: grid;
  gap: 1rem;
}

.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  padding: 1.5rem;
}

.page {
  animation: page-fade 200ms ease;
}

@keyframes page-fade {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---- Eyebrow / pills ---- */
.eyebrow {
  margin-bottom: 0.4rem;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.pill-row {
  margin-top: 0.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.pill {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-xxs);
  padding: 0.2rem 0.55rem;
  letter-spacing: 0.01em;
}

.home-cta-row {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

/* ---- Buttons ---- */
.cta,
button,
.btn-link {
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: 500;
  min-height: 2.25rem;
  padding: 0.45rem 0.9rem;
  text-decoration: none;
  transition: opacity 0.15s ease, background 0.15s ease;
}

button,
.cta {
  color: var(--color-bg);
  background: var(--color-text);
}

button:hover,
.cta:hover {
  opacity: 0.88;
}

button.alt,
.btn-link {
  color: var(--color-text-secondary);
  border-color: var(--color-border);
  background: transparent;
}

button.alt:hover,
.btn-link:hover {
  color: var(--color-text);
  border-color: var(--color-border-hover);
  background: rgba(255, 255, 255, 0.04);
  opacity: 1;
  text-decoration: none;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.4;
}

.ghost-link {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.ghost-link:hover {
  color: var(--color-text-secondary);
}

/* ---- Utility ---- */
.row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.between {
  justify-content: space-between;
}

.wrap {
  flex-wrap: wrap;
}

.stack {
  margin-top: 0.75rem;
  display: grid;
  gap: 0.65rem;
}

/* ---- Forms ---- */
label {
  display: grid;
  gap: 0.3rem;
  color: var(--color-text-secondary);
  font-size: var(--fs-sm);
  font-weight: 500;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.65rem;
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.04);
  font: inherit;
  font-size: var(--fs-sm);
}

textarea {
  line-height: 1.5;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: none;
}

select option {
  background: var(--color-surface-2);
  color: var(--color-text);
}

.muted {
  color: var(--color-text-muted);
  font-size: var(--fs-xs);
}

.hidden {
  display: none;
}

/* ---- Home hero ---- */
.csa-hero p {
  max-width: 65ch;
}

/* ---- 2026 changes info section ---- */
.csa-changes h3 {
  margin-bottom: 0.25rem;
}

.csa-changes details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  overflow: hidden;
}

.csa-changes details + details {
  margin-top: 0.45rem;
}

.csa-changes summary {
  padding: 0.6rem 0.85rem;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  user-select: none;
  transition: background 0.15s ease;
}

.csa-changes summary:hover {
  background: rgba(255, 255, 255, 0.03);
}

.csa-changes summary::marker {
  color: var(--color-text-muted);
}

.details-body {
  padding: 0 0.85rem 0.75rem;
  font-size: var(--fs-sm);
}

.details-body h4 {
  margin-top: 0.6rem;
  margin-bottom: 0.2rem;
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.details-body p {
  margin-top: 0.2rem;
  font-size: var(--fs-sm);
  line-height: 1.55;
}

.details-body ul {
  margin: 0.3rem 0 0.5rem;
  padding-left: 1.25rem;
  font-size: var(--fs-sm);
  line-height: 1.6;
}

.details-body li {
  margin-bottom: 0.25rem;
}

.details-body code {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  padding: 0.1rem 0.35rem;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.info-table {
  margin-top: 0.45rem;
  display: grid;
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  font-size: var(--fs-xs);
}

.info-row {
  display: grid;
  grid-template-columns: 48px 1fr 60px 1fr;
  gap: 0.65rem;
  padding: 0.45rem 0.65rem;
  background: var(--color-surface);
  align-items: baseline;
}

.info-row-header {
  background: rgba(255, 255, 255, 0.03);
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: var(--fs-xxs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* 3-column variant for course units table */
.csa-changes details:nth-of-type(2) .info-row {
  grid-template-columns: 48px 1fr 80px;
}

/* ---- Dashboard ---- */
.dashboard-columns {
  margin-top: 0.9rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

.dashboard-col {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.02);
}

.dashboard-actions {
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--color-border);
}

.session-list {
  display: grid;
  gap: 0.5rem;
}

.session-list:empty::after {
  content: 'No sessions yet.';
  color: var(--color-text-muted);
  font-size: var(--fs-xs);
}

.session-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  padding: 0.65rem;
}

.session-meta {
  display: grid;
  gap: 0.25rem;
}

.session-top {
  display: flex;
  gap: 0.5rem;
  align-items: baseline;
}

.session-top strong {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text);
}

.session-progress {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.session-detail {
  color: var(--color-text-muted);
  font-size: var(--fs-xs);
}

.progress-bar-bg {
  width: 80px;
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--color-accent);
  border-radius: 999px;
}

/* ---- Exam ---- */
.exam-header {
  margin-bottom: 0.65rem;
}

#overallTimer {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  padding: 0.35rem 0.6rem;
  font-size: var(--fs-sm);
}

#questionIndex {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.question-body {
  display: grid;
  gap: 0.55rem;
  font-size: var(--fs-md);
}

.question-body p,
.frq-context p,
.option-text p {
  color: var(--color-text-secondary);
  margin: 0;
}

.question-stem {
  white-space: pre-wrap;
}

.question-image {
  max-width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.code-block {
  margin: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface-2);
  overflow: auto;
  padding: 0.65rem;
}

.code-block code,
pre,
code {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text);
}

.option-card {
  margin-top: 0.75rem;
}

/* ---- FRQ ---- */
.frq-view {
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.frq-title {
  margin: 0 0 0.75rem;
  font-size: var(--fs-xl);
}

.frq-instructions {
  margin: 0.4rem 0 0.85rem;
  border-top: 1px solid var(--color-border-hover);
  border-bottom: 1px solid var(--color-border-hover);
  padding: 0.75rem 0.5rem;
  text-align: center;
  font-size: var(--fs-sm);
  background: rgba(255, 255, 255, 0.02);
}

.frq-instructions p {
  color: var(--color-text-secondary);
}

.frq-context {
  font-size: var(--fs-md);
}

.frq-view pre,
.frq-view code {
  font-family: var(--font-mono);
}

.frq-view pre {
  margin: 0.6rem 0;
  border: none;
  border-radius: 0;
  background: transparent;
  padding: 0;
}

.frq-class-info {
  border: 1px solid var(--color-border-hover);
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-md);
  margin: 1rem 0;
  padding: 0.85rem 1rem;
}

.frq-class-info h4 {
  margin: 0 0 0.5rem;
  font-size: var(--fs-md);
}

.frq-class-info-body {
  font-size: var(--fs-md);
}

.frq-parts {
  display: grid;
  gap: 0.9rem;
  margin-top: 0.7rem;
}

.frq-part {
  border-top: 1px solid var(--color-border);
  padding-top: 0.7rem;
}

.frq-part-label {
  margin-bottom: 0.3rem;
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--color-text);
}

.frq-response-input {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: 1.5;
  resize: vertical;
}

/* ---- MCQ options ---- */
.options-list {
  display: grid;
  gap: 0.45rem;
}

.option-item {
  position: relative;
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: baseline;
  gap: 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  padding: 0.6rem 0.75rem;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.option-item:hover {
  border-color: var(--color-border-hover);
}

.option-item.selected {
  border-color: var(--color-accent);
  background: rgba(59, 130, 246, 0.08);
}

.option-item input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.option-label {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: 600;
}

.option-text {
  color: var(--color-text-secondary);
  font-size: var(--fs-md);
}

.remediation-review-options {
  display: grid;
  gap: 0.45rem;
}

.review-question-card {
  gap: 0.65rem;
}

.review-question-body {
  font-size: var(--fs-md);
}

.review-answer-summary {
  color: var(--color-text-muted);
}

.remediation-review-option {
  cursor: default;
  grid-template-columns: auto 1fr auto;
}

.remediation-review-option:hover {
  border-color: var(--color-border);
}

.remediation-review-option.is-user {
  border-color: rgba(59, 130, 246, 0.4);
}

.remediation-review-option.is-correct {
  border-color: rgba(16, 185, 129, 0.45);
}

.review-flags {
  display: flex;
  gap: 0.35rem;
  align-items: center;
}

.review-flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 7.6rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: var(--fs-xxs);
  color: var(--color-text-muted);
  padding: 0.08rem 0.38rem;
  white-space: nowrap;
}

.review-flag.is-user {
  border-color: rgba(59, 130, 246, 0.5);
  color: var(--color-accent);
}

.review-flag.is-correct {
  border-color: rgba(16, 185, 129, 0.55);
  color: var(--color-success);
}

.remediation-explanation-card {
  margin-top: 0.6rem;
}

.remediation-explanation-card h5 {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.nav-bottom {
  margin-top: 0.85rem;
}

/* ---- Summary / results ---- */
.summary-stats {
  margin-top: 0.65rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.5rem;
}

.summary-top-actions {
  margin-bottom: 0.35rem;
}

.summary-top-actions h3,
.summary-top-actions h4 {
  margin: 0;
}

.summary-breakdown-heading {
  margin-top: 1rem;
  margin-bottom: 0.4rem;
}

.stat-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  padding: 0.75rem;
  text-align: center;
}

.stat-value {
  display: block;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-xxs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.timing-table {
  margin-top: 0.6rem;
  display: grid;
  gap: 0.35rem;
}

.timing-row {
  display: grid;
  align-items: center;
  gap: 0.45rem;
  min-height: 44px;
  grid-template-columns: 40px 52px 118px minmax(330px, 1fr) 92px 58px;
  font-size: var(--fs-xs);
}

.timing-q,
.timing-answer,
.timing-time {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.timing-result {
  font-size: var(--fs-xxs);
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.timing-result-correct {
  color: var(--color-success);
}

.timing-result-wrong {
  color: var(--color-danger);
}

.timing-result-blank {
  color: var(--color-text-muted);
}

.timing-result-frq {
  color: var(--color-accent);
}

.timing-bar-bg {
  height: 6px;
  width: 92px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
  justify-self: start;
}

.timing-bar {
  height: 100%;
  background: var(--color-accent);
  border-radius: 999px;
}

.timing-remediation-cell {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: nowrap;
  white-space: nowrap;
  min-width: 0;
}

.timing-remediation-empty {
  color: var(--color-text-muted);
}

.remediation-open-btn {
  justify-self: start;
  min-height: 1.7rem;
  font-size: var(--fs-xxs);
  padding: 0.2rem 0.5rem;
}

.remediation-inline-status {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-xxs);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.practice-token {
  display: inline-flex;
  align-items: center;
  gap: 0.12rem;
}

.practice-token-label {
  color: var(--color-text-muted);
}

.practice-token-mark.is-correct {
  color: var(--color-success);
}

.practice-token-mark.is-wrong {
  color: var(--color-danger);
}

.remediation-fixed-pill {
  border: 1px solid rgba(16, 185, 129, 0.55);
  border-radius: 999px;
  color: var(--color-success);
  font-family: var(--font-mono);
  font-size: var(--fs-xxs);
  line-height: 1.2;
  padding: 0.12rem 0.42rem;
}

.remediation-modal-footer {
  margin-top: 0.55rem;
  display: flex;
  gap: 0.6rem;
  justify-content: stretch;
  flex-wrap: nowrap;
}

.remediation-modal-footer > button {
  flex: 1 1 0;
  min-width: 0;
  white-space: nowrap;
}

.remediation-review-list {
  margin-top: 0.6rem;
  display: grid;
  gap: 0.55rem;
}

.remediation-review-card,
.remediation-practice-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  padding: 0.7rem;
  display: grid;
  gap: 0.45rem;
}

.remediation-review-card.is-fixed {
  border-color: rgba(16, 185, 129, 0.45);
}

.remediation-review-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}

.remediation-fixed-badge {
  margin-left: 0.35rem;
  border: 1px solid rgba(16, 185, 129, 0.55);
  border-radius: 999px;
  color: var(--color-success);
  font-family: var(--font-mono);
  font-size: var(--fs-xxs);
  padding: 0.1rem 0.38rem;
  vertical-align: middle;
}

.remediation-review-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem 0.6rem;
}

.remediation-practice-title {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.remediation-question {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.6rem;
  display: grid;
  gap: 0.45rem;
  background: var(--color-surface);
}

.remediation-question-stem {
  color: var(--color-text-secondary);
  font-size: var(--fs-sm);
}

.remediation-options {
  display: grid;
  gap: 0.35rem;
}

.remediation-question-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.remediation-check-status {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.remediation-check-status.is-correct {
  color: var(--color-success);
  font-weight: 600;
}

.remediation-check-status.is-wrong {
  color: var(--color-danger);
  font-weight: 600;
}

.remediation-question.is-correct {
  border-color: rgba(16, 185, 129, 0.45);
  background: rgba(16, 185, 129, 0.07);
}

.remediation-question.is-wrong {
  border-color: rgba(239, 68, 68, 0.45);
  background: rgba(239, 68, 68, 0.07);
}

.remediation-feedback {
  border-left: 3px solid var(--color-accent);
  padding-left: 0.55rem;
  font-size: var(--fs-sm);
}

.remediation-question.is-correct .remediation-feedback {
  border-left-color: var(--color-success);
}

.remediation-question.is-wrong .remediation-feedback {
  border-left-color: var(--color-danger);
}

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

.remediation-modal {
  width: min(760px, 96vw);
}

.remediation-modal-panel {
  max-height: min(78vh, 860px);
  overflow-y: auto;
}

.remediation-modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
}

.remediation-modal-head h4 {
  margin: 0;
}

/* ---- Legal pages ---- */
.legal-page h3 {
  margin-top: 0.85rem;
  margin-bottom: 0.3rem;
}

/* ---- Auth dialog ---- */
.auth-dialog {
  border: 1px solid var(--color-border-hover);
  border-radius: var(--radius-lg);
  width: min(480px, 94vw);
  padding: 0;
  background: var(--color-surface);
  color: var(--color-text-secondary);
}

.auth-dialog::backdrop {
  background: var(--color-overlay);
  backdrop-filter: blur(4px);
}

.auth-panel {
  margin: 0;
  padding: 1.25rem;
  display: grid;
  gap: 0.6rem;
}

#authCodeInput {
  max-width: 140px;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .shell,
  .site-header {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .card {
    padding: 1.15rem;
  }

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

  .session-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .session-row > button {
    width: 100%;
  }

  .timing-row {
    grid-template-columns: 34px 44px 96px minmax(220px, 1fr) 76px 48px;
  }

  .remediation-review-head {
    flex-direction: column;
    align-items: flex-start;
  }

}

@media (max-width: 720px) {
  .site-header {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  .brand-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
  }

  .brand-link {
    font-size: 1.5rem;
  }

  .brand-tag {
    font-size: var(--fs-xxs);
  }

  .main-nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
    gap: 0.35rem;
  }

  .main-nav a {
    text-align: center;
    border: 1px solid var(--color-border);
    padding: 0.45rem 0.55rem;
  }

  .auth-strip {
    grid-column: auto;
    grid-row: auto;
    justify-self: stretch;
    text-align: left;
    align-items: stretch;
    gap: 0.4rem;
  }

  #loginBtn,
  #logoutBtn {
    width: 100%;
  }

  .card {
    border-radius: var(--radius-md);
  }

  .home-cta-row {
    align-items: stretch;
  }

  .cta,
  .home-cta-row .ghost-link {
    width: 100%;
    text-align: center;
  }

  .exam-card,
  .exam-header {
    padding: 0.85rem;
  }

  .option-item {
    grid-template-columns: auto 1fr;
    gap: 0.5rem;
  }

  .option-item .option-text {
    grid-column: 1 / -1;
    margin-top: 0.1rem;
  }

  .row.between.wrap {
    align-items: flex-start;
  }

  .row.between.wrap > button,
  .row.between.wrap > .btn-link {
    width: 100%;
  }

  .exam-header .row.between.wrap > :last-child {
    width: 100%;
    justify-content: flex-start;
  }

  .nav-bottom > button {
    flex: 1 1 140px;
  }

  .auth-panel .row {
    align-items: stretch;
  }

  .auth-panel .row > * {
    width: 100%;
  }

  #authCodeInput {
    max-width: none;
  }
}

@media (max-width: 520px) {
  .main-nav {
    grid-template-columns: 1fr;
  }

  .shell {
    margin-top: 0.5rem;
    gap: 0.65rem;
  }

  .card {
    padding: 0.75rem;
  }

  .question-body,
  .frq-context,
  .frq-class-info-body,
  .option-text {
    font-size: 0.875rem;
  }

  .timing-row {
    gap: 0.3rem;
    grid-template-columns: 34px 42px 80px 1fr;
    font-size: var(--fs-xxs);
  }

  .timing-bar-bg,
  .timing-time,
  .timing-remediation-cell,
  .timing-remediation-empty {
    grid-column: 1 / -1;
  }

  #overallTimer {
    padding: 0.3rem 0.5rem;
  }

  .frq-instructions {
    padding: 0.6rem 0.35rem;
  }

  .frq-title,
  .frq-part-label {
    font-size: 1rem;
  }
}