/* =========================================================================
   RojgarDwaar — Design Tokens
   Signature idea: the site borrows the visual language of an Indian
   government exam admit card / OMR answer sheet — perforated ticket
   edges, roll-number-style code blocks, a digital-clock timer, and
   circular OMR-bubble option letters. It's built for the subject
   (mock tests, Railway exam prep) rather than a generic template.
   ========================================================================= */
:root {
  --ink: #1b2a4a;
  --ink-soft: #45557a;
  --paper: #f1efe6;
  --paper-deep: #e7e3d5;
  --card: #ffffff;
  --line: #d9d3c1;
  --stamp-red: #b23a2e;
  --stamp-red-soft: #f3e0dd;
  --gold: #c1852c;
  --gold-soft: #f6ead2;
  --success: #2f6b4f;
  --success-soft: #dcece3;
  --shadow: 0 2px 10px rgba(27, 42, 74, 0.08);

  --font-display: "Roboto Slab", "Noto Serif Devanagari", serif;
  --font-body: "Inter", "Noto Sans Devanagari", -apple-system, sans-serif;
  --font-mono: "Space Mono", "Noto Sans Mono", monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --container: 880px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

button {
  font-family: inherit;
}

img {
  max-width: 100%;
}

.rjd-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 16px;
}

/* ---------- Header / Global Nav ---------------------------------------- */
.rjd-site-header {
  background: var(--ink);
  color: #fff;
  border-bottom: 4px solid var(--gold);
}

.rjd-site-header__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.rjd-brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
  color: #fff;
}

.rjd-brand__mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.02em;
}

.rjd-brand__tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid var(--gold);
  padding: 2px 6px;
  border-radius: 3px;
  display: none;
}

@media (min-width: 480px) {
  .rjd-brand__tag {
    display: inline-block;
  }
}

.rjd-lang-toggle {
  display: flex;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
}

.rjd-lang-toggle button {
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.75);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.rjd-lang-toggle button.is-active {
  background: var(--gold);
  color: var(--ink);
}

/* ---------- Buttons ------------------------------------------------------ */
.rjd-btn {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  padding: 11px 18px;
  border-radius: var(--radius-sm);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.06s ease, opacity 0.15s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.rjd-btn:active {
  transform: scale(0.98);
}

.rjd-btn:disabled,
.rjd-btn.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.rjd-btn--primary {
  background: var(--ink);
  color: #fff;
}

.rjd-btn--secondary {
  background: var(--gold-soft);
  color: var(--gold);
  border-color: var(--gold);
}

.rjd-btn--danger {
  background: var(--stamp-red);
  color: #fff;
}

.rjd-btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.rjd-btn--block {
  width: 100%;
  margin-top: 14px;
}

/* ---------- Eyebrow / Section title -------------------------------------- */
.rjd-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.rjd-section-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  margin: 22px 0 10px;
  color: var(--ink);
  border-bottom: 2px solid var(--line);
  padding-bottom: 6px;
}

/* ---------- Chapter Hero (masthead) --------------------------------------- */
.rjd-chapter-hero {
  padding: 22px 0 16px;
  border-bottom: 3px double var(--ink);
  margin-bottom: 4px;
}

.rjd-chapter-hero__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 5vw, 30px);
  margin: 6px 0 8px;
  color: var(--ink);
}

.rjd-chapter-hero__stat {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--stamp-red);
  margin: 0;
}

/* ---------- Tabs ---------------------------------------------------------- */
.rjd-tabs {
  display: flex;
  gap: 4px;
  margin: 18px 0 4px;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
}

.rjd-tab {
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  padding: 10px 6px;
  font-weight: 700;
  font-size: 14px;
  color: var(--ink-soft);
  cursor: pointer;
  white-space: nowrap;
}

.rjd-tab.is-active {
  color: var(--ink);
  border-bottom-color: var(--stamp-red);
}

.rjd-tab-panel {
  padding: 18px 0 40px;
}

/* ---------- Notes card ----------------------------------------------------- */
.rjd-notes-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow);
}

.rjd-notes-card p {
  margin: 4px 0 12px;
}

.rjd-key-points {
  margin: 0 0 12px;
  padding-left: 20px;
}

.rjd-key-points li {
  margin-bottom: 6px;
}

.rjd-quick-revision {
  background: var(--gold-soft);
  border-left: 4px solid var(--gold);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 14px;
}

/* ---------- Practice toolbar / cards --------------------------------------- */
.rjd-practice-toolbar {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.rjd-chip {
  border: 1.5px solid var(--line);
  background: var(--card);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  color: var(--ink-soft);
}

.rjd-chip.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.rjd-practice-card,
.rjd-exam-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow);
}

.rjd-practice-card__meta,
.rjd-exam-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.rjd-question-text {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  margin: 0 0 16px;
  color: var(--ink);
}

.rjd-question-text--sm {
  font-size: 15px;
}

/* ---------- Options (OMR-bubble styled) ------------------------------------ */
.rjd-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 14px;
}

.rjd-option {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  text-align: left;
  background: var(--paper);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  cursor: pointer;
  font-size: 15px;
  color: var(--ink);
  transition: border-color 0.12s ease, background 0.12s ease;
}

.rjd-option:hover:not(.is-disabled) {
  border-color: var(--ink-soft);
}

.rjd-option__letter {
  flex: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--ink-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  color: var(--ink-soft);
}

.rjd-option.is-selected {
  border-color: var(--ink);
  background: #eef1f8;
}

.rjd-option.is-selected .rjd-option__letter {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

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

.rjd-option.is-correct .rjd-option__letter {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}

.rjd-option.is-wrong {
  border-color: var(--stamp-red);
  background: var(--stamp-red-soft);
}

.rjd-option.is-wrong .rjd-option__letter {
  background: var(--stamp-red);
  border-color: var(--stamp-red);
  color: #fff;
}

.rjd-option.is-disabled {
  cursor: default;
}

/* ---------- Feedback / Badges ---------------------------------------------- */
.rjd-feedback {
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-bottom: 14px;
  font-size: 14px;
}

.rjd-feedback--correct {
  background: var(--success-soft);
  border-left: 4px solid var(--success);
}

.rjd-feedback--wrong {
  background: var(--stamp-red-soft);
  border-left: 4px solid var(--stamp-red);
}

.rjd-feedback__verdict {
  font-weight: 700;
  margin: 0 0 6px;
}

.rjd-feedback__explanation {
  margin: 0;
}

.rjd-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 9px;
  border-radius: 999px;
  font-weight: 700;
}

.rjd-badge--easy {
  background: var(--success-soft);
  color: var(--success);
}

.rjd-badge--medium {
  background: var(--gold-soft);
  color: var(--gold);
}

.rjd-badge--hard {
  background: var(--stamp-red-soft);
  color: var(--stamp-red);
}

.rjd-practice-card__actions,
.rjd-exam-card__actions,
.rjd-exam-card__nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 6px;
}

/* ---------- Mock Test Hub — "admit card" tickets --------------------------- */
.rjd-testcard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
  margin: 14px 0;
}

.rjd-testcard {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--card);
  border: 1.5px dashed var(--ink-soft);
  border-radius: var(--radius-md);
  padding: 16px 14px;
  text-decoration: none;
  color: var(--ink);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.rjd-testcard::before,
.rjd-testcard::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  background: var(--paper);
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
}

.rjd-testcard::before {
  left: -8px;
}

.rjd-testcard::after {
  right: -8px;
}

.rjd-testcard__index {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--stamp-red);
}

.rjd-testcard__label {
  font-weight: 700;
  font-size: 14px;
}

.rjd-testcard__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-soft);
}

.rjd-testcard--accent {
  border-style: solid;
  border-color: var(--gold);
}

.rjd-topic-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.rjd-topic-chip {
  border: 1.5px solid var(--line);
  background: var(--card);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  text-decoration: none;
  color: var(--ink);
}

.rjd-history-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rjd-history-item {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
}

/* ---------- Exam page (admit-card header + OMR palette) --------------------- */
.rjd-exam {
  padding-bottom: 40px;
}

.rjd-exam__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin: 14px 0;
  flex-wrap: wrap;
}

.rjd-exam__title {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.rjd-exam__title .rjd-eyebrow {
  color: var(--gold);
}

.rjd-exam__admit-code {
  font-family: var(--font-mono);
  font-size: 10px;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.04em;
}

.rjd-exam__timer {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.rjd-exam__timer-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.65);
}

.rjd-exam__timer-value {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--gold);
  padding: 2px 12px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}

.rjd-exam__timer-value.is-low {
  color: #ffb3ab;
  border-color: var(--stamp-red);
  animation: rjd-pulse 1s infinite;
}

@keyframes rjd-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}

.rjd-exam__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 760px) {
  .rjd-exam__body {
    grid-template-columns: 2fr 1fr;
    align-items: start;
  }
}

.rjd-exam__palette-area {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow);
  position: sticky;
  top: 12px;
}

.rjd-palette {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(38px, 1fr));
  gap: 6px;
  margin: 10px 0 14px;
}

.rjd-palette__cell {
  aspect-ratio: 1;
  border-radius: 50%;
  border: 2px solid var(--line);
  background: var(--paper);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  cursor: pointer;
  color: var(--ink-soft);
}

.rjd-palette__cell--attempted {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}

.rjd-palette__cell--marked {
  background: var(--gold);
  border-color: var(--gold);
  color: #fff;
}

.rjd-palette__cell--unattempted {
  background: var(--card);
}

.rjd-palette__cell.is-current {
  outline: 2px solid var(--stamp-red);
  outline-offset: 2px;
}

.rjd-palette-legend {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

.rjd-palette-legend span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.rjd-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.rjd-dot--attempted { background: var(--success); }
.rjd-dot--marked { background: var(--gold); }
.rjd-dot--unattempted { background: var(--line); }

/* ---------- Result page ----------------------------------------------------- */
.rjd-result {
  padding: 14px 0 40px;
}

.rjd-result__banner {
  text-align: center;
  padding: 26px 16px;
  border-radius: var(--radius-lg);
  margin-bottom: 18px;
  background: var(--ink);
  color: #fff;
}

.rjd-result__score {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 700;
  margin: 0;
}

.rjd-result__performance {
  margin: 4px 0 0;
  font-weight: 600;
  color: var(--gold);
}

.rjd-stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 18px;
}

@media (min-width: 560px) {
  .rjd-stat-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.rjd-stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px;
  text-align: center;
}

.rjd-stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
}

.rjd-stat__label {
  font-size: 11px;
  color: var(--ink-soft);
}

.rjd-stat--correct .rjd-stat__value { color: var(--success); }
.rjd-stat--wrong .rjd-stat__value { color: var(--stamp-red); }

.rjd-result__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.rjd-review-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rjd-review-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-left-width: 5px;
  border-radius: var(--radius-sm);
  padding: 14px;
}

.rjd-review-item--correct { border-left-color: var(--success); }
.rjd-review-item--wrong { border-left-color: var(--stamp-red); }
.rjd-review-item--unattempted { border-left-color: var(--line); }

.rjd-review-item__head {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 12px;
  margin-bottom: 6px;
  color: var(--ink-soft);
}

.rjd-review-item__answer,
.rjd-review-item__explanation {
  font-size: 13px;
  margin: 4px 0;
}

/* ---------- Loading / Error / Empty ---------------------------------------- */
.rjd-loading,
.rjd-error,
.rjd-empty-state {
  text-align: center;
  padding: 60px 16px;
  color: var(--ink-soft);
}

.rjd-loading__spinner {
  width: 34px;
  height: 34px;
  margin: 0 auto 14px;
  border: 3px solid var(--line);
  border-top-color: var(--stamp-red);
  border-radius: 50%;
  animation: rjd-spin 0.8s linear infinite;
}

@keyframes rjd-spin {
  to { transform: rotate(360deg); }
}

.rjd-error__icon {
  font-size: 30px;
  margin-bottom: 6px;
}

/* ---------- Toasts ----------------------------------------------------------- */
.rjd-toast-root {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: min(92vw, 420px);
}

.rjd-toast {
  background: var(--ink);
  color: #fff;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  box-shadow: var(--shadow);
}

.rjd-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.rjd-toast--warn { background: var(--gold); color: var(--ink); }
.rjd-toast--success { background: var(--success); }

/* ---------- Modal ------------------------------------------------------------ */
.rjd-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(27, 42, 74, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.18s ease;
  padding: 16px;
}

.rjd-modal-overlay.is-visible {
  opacity: 1;
}

.rjd-modal {
  background: var(--card);
  border-radius: var(--radius-md);
  padding: 22px;
  width: 100%;
  max-width: 360px;
  box-shadow: var(--shadow);
}

.rjd-modal__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  margin: 0 0 8px;
}

.rjd-modal__message {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0 0 18px;
}

.rjd-modal__actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* ---------- Footer ------------------------------------------------------------ */
.rjd-site-footer {
  text-align: center;
  padding: 24px 16px 40px;
  font-size: 12px;
  color: var(--ink-soft);
}

/* ---------- Reduced motion --------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- Focus visibility --------------------------------------------------- */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--stamp-red);
  outline-offset: 2px;
}