/* ==========================================================================
   ArctiSeal Sales Quiz — Styles
   ========================================================================== */

:root {
  --navy: #1C1E21;
  --white: #FFFFFF;
  --steel: #65676B;
  --primary: #0064E0;
  --primary-dark: #0050b8;
  --header-dark: #0e1b4d;
  --correct: #16a34a;
  --incorrect: #dc2626;
  --page-bg: #eff0f5;
  --explainer-bg: #fefce8;
  --card-shadow: 0 1px 2px rgba(14, 27, 77, 0.04), 0 4px 16px rgba(14, 27, 77, 0.06);
  --card-shadow-hover: 0 2px 4px rgba(14, 27, 77, 0.08), 0 8px 24px rgba(14, 27, 77, 0.10);
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.8rem;
  --radius-pill: 999px;
  --transition: 0.2s ease;
}

/* ----- Reset / base ----- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--navy);
  background: var(--page-bg);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
button:focus-visible { outline: 3px solid rgba(0, 100, 224, 0.4); outline-offset: 2px; border-radius: var(--radius-sm); }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ----- Header ----- */
.app-header {
  background: var(--header-dark);
  color: var(--white);
  padding: 1.5rem 1.25rem 1.75rem;
}
.app-header--compact { padding: 1rem 1.25rem; }
.app-header__inner {
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.app-header--compact .app-header__inner {
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
}
.app-header__title {
  font-family: 'Outfit', 'Inter', sans-serif;
  font-weight: 600;
  font-size: 1.5rem;
  margin: 0;
  letter-spacing: -0.01em;
}
.app-header__title--small { font-size: 1.125rem; font-weight: 500; }
.app-header__subtitle {
  font-size: 0.95rem;
  margin: 0;
  color: rgba(255,255,255,0.78);
  font-weight: 400;
}
.app-header__back {
  color: var(--white);
  font-size: 1.25rem;
  line-height: 1;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.08);
  transition: background var(--transition);
}
.app-header__back:hover { background: rgba(255,255,255,0.18); text-decoration: none; }

/* ----- Layout ----- */
.container {
  flex: 1;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 2rem;
}

/* ----- Footer ----- */
.app-footer {
  text-align: center;
  font-size: 0.8rem;
  color: var(--steel);
  padding: 1.5rem 1rem 2rem;
}
.app-footer p { margin: 0; }

/* ==========================================================================
   Home — Module cards
   ========================================================================== */
.modules {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.module-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.25rem;
  box-shadow: var(--card-shadow);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border: 1px solid transparent;
}
.module-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-shadow-hover);
  border-color: rgba(0, 100, 224, 0.15);
}
.module-card:focus-within { border-color: var(--primary); }
.module-card__icon { font-size: 2rem; line-height: 1; }
.module-card__name {
  font-family: 'Outfit', sans-serif;
  font-size: 1.35rem;
  font-weight: 600;
  margin: 0;
  color: var(--navy);
}
.module-card__desc {
  font-size: 0.95rem;
  color: var(--steel);
  margin: 0 0 0.5rem 0;
  line-height: 1.5;
}
.module-card__cta {
  align-self: flex-start;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  color: var(--primary);
  font-size: 0.95rem;
  padding: 0.25rem 0;
}
.module-card__cta:hover { color: var(--primary-dark); }

@media (min-width: 720px) {
  .modules {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  .container { max-width: 960px; }
}
@media (min-width: 1100px) {
  .modules { grid-template-columns: repeat(4, 1fr); }
  .container { max-width: 1200px; }
}

/* ----- Level picker ----- */
.level-picker {
  margin-top: 1.5rem;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.25rem;
  box-shadow: var(--card-shadow);
  position: relative;
  animation: slideDown 0.25s ease;
}
.level-picker__close {
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--steel);
  padding: 0.25rem 0;
  margin-bottom: 0.5rem;
}
.level-picker__close:hover { color: var(--primary); }
.level-picker__title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 0.25rem 0;
}
.level-picker__module {
  font-size: 0.9rem;
  color: var(--steel);
  margin: 0 0 1rem 0;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.level-picker__buttons {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.level-pill {
  width: 100%;
  min-height: 56px;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-pill);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  background: var(--white);
  color: var(--navy);
  border: 1.5px solid #d8dae0;
  transition: all var(--transition);
  text-align: center;
}
.level-pill:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.level-pill.is-active,
.level-pill:active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

@media (min-width: 480px) {
  .level-picker__buttons { flex-direction: row; }
  .level-pill { flex: 1; }
}

/* ==========================================================================
   Quiz screen
   ========================================================================== */
.quiz-breadcrumb {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.85rem;
  color: var(--steel);
  margin-bottom: 0.75rem;
  letter-spacing: 0.01em;
}
.quiz-breadcrumb strong { color: var(--navy); font-weight: 600; }

.progress {
  width: 100%;
  height: 6px;
  background: #d8dae0;
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.progress__bar {
  height: 100%;
  width: 0%;
  background: var(--primary);
  border-radius: 3px;
  transition: width 0.3s ease;
}

.quiz-question {
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 1.25rem;
  line-height: 1.4;
  color: var(--navy);
  margin: 0 0 1.25rem 0;
}

.answers {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.answer-tile {
  width: 100%;
  min-height: 56px;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background: var(--white);
  border: 1.5px solid #d8dae0;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 1rem;
  color: var(--navy);
  text-align: left;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  line-height: 1.4;
}
.answer-tile:hover:not(:disabled) {
  border-color: var(--primary);
  transform: translateY(-1px);
}
.answer-tile:disabled { cursor: default; }
.answer-tile__letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #eff0f5;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--steel);
  flex-shrink: 0;
  transition: all var(--transition);
}
.answer-tile__text { flex: 1; }
.answer-tile__icon {
  margin-left: auto;
  font-size: 1.1rem;
  line-height: 1;
  flex-shrink: 0;
}

.answer-tile.is-correct {
  border-color: var(--correct);
  background: rgba(22, 163, 74, 0.08);
  color: var(--navy);
}
.answer-tile.is-correct .answer-tile__letter {
  background: var(--correct);
  color: var(--white);
}
.answer-tile.is-incorrect {
  border-color: var(--incorrect);
  background: rgba(220, 38, 38, 0.08);
  color: var(--navy);
}
.answer-tile.is-incorrect .answer-tile__letter {
  background: var(--incorrect);
  color: var(--white);
}
.answer-tile.is-dimmed { opacity: 0.55; }

/* ----- Explainer panel ----- */
.explainer-panel {
  background: var(--explainer-bg);
  border-left: 4px solid var(--primary);
  border-radius: 0.8rem;
  padding: 1rem 1.25rem;
  margin-top: 1rem;
  animation: slideDown 0.25s ease;
}
.explainer-panel .why-header {
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  margin-bottom: 0.5rem;
}
.explainer-panel p {
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  color: var(--navy);
  line-height: 1.6;
  margin: 0 0 0.5rem 0;
}
.explainer-panel p:last-child { margin-bottom: 0; }
.explainer-panel .key-takeaway {
  font-weight: 600;
  color: var(--header-dark);
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ----- Quiz actions ----- */
.quiz-actions {
  margin-top: 1.5rem;
  display: flex;
  justify-content: flex-end;
}

/* ----- Buttons ----- */
.btn {
  min-height: 48px;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-pill);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-align: center;
}
.btn--primary {
  background: var(--primary);
  color: var(--white);
}
.btn--primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn--secondary {
  background: var(--white);
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn--secondary:hover { background: rgba(0, 100, 224, 0.06); }
.btn--ghost {
  background: transparent;
  color: var(--steel);
}
.btn--ghost:hover { color: var(--navy); }

/* ==========================================================================
   Results screen
   ========================================================================== */
.results-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: var(--card-shadow);
  animation: slideDown 0.3s ease;
}
.results-card__label {
  font-size: 0.85rem;
  color: var(--steel);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  margin: 0 0 0.5rem 0;
}
.results-card__score {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 3rem;
  line-height: 1.1;
  color: var(--navy);
  margin: 0;
}
.results-card__percent {
  font-family: 'Outfit', sans-serif;
  font-weight: 500;
  font-size: 1.25rem;
  color: var(--steel);
  margin: 0.25rem 0 1rem 0;
}
.results-card__badge {
  display: inline-block;
  padding: 0.4rem 1.1rem;
  border-radius: var(--radius-pill);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
.results-card__badge.is-pass {
  background: rgba(22, 163, 74, 0.12);
  color: var(--correct);
}
.results-card__badge.is-fail {
  background: rgba(220, 38, 38, 0.12);
  color: var(--incorrect);
}
.results-card__message {
  font-size: 1rem;
  color: var(--navy);
  margin: 0;
  line-height: 1.55;
}

.results-actions {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.results-actions .btn { width: 100%; }

/* ==========================================================================
   Glossary
   ========================================================================== */
.glossary-link {
  margin-top: 1.25rem;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  box-shadow: var(--card-shadow);
  display: flex;
  align-items: center;
  gap: 0.9rem;
  text-decoration: none;
  color: var(--navy);
  border: 1px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.glossary-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-shadow-hover);
  border-color: rgba(0, 100, 224, 0.15);
  text-decoration: none;
}
.glossary-link__icon {
  font-size: 1.6rem;
  line-height: 1;
  flex-shrink: 0;
}
.glossary-link__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.glossary-link__title {
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--navy);
}
.glossary-link__desc {
  font-size: 0.85rem;
  color: var(--steel);
  line-height: 1.4;
}
.glossary-link__arrow {
  color: var(--primary);
  font-weight: 600;
  font-size: 1.1rem;
}

.glossary-intro {
  font-size: 0.95rem;
  color: var(--steel);
  margin: 0 0 1rem 0;
  line-height: 1.5;
}

.glossary {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.glossary-item {
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--card-shadow);
  padding: 0;
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.glossary-item[open] { box-shadow: var(--card-shadow-hover); }
.glossary-item summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  min-height: 56px;
  position: relative;
  user-select: none;
}
.glossary-item summary::-webkit-details-marker { display: none; }
.glossary-item summary::after {
  content: '+';
  margin-left: auto;
  font-family: 'Outfit', sans-serif;
  font-weight: 500;
  font-size: 1.4rem;
  line-height: 1;
  color: var(--primary);
  transition: transform var(--transition);
}
.glossary-item[open] summary::after {
  content: '\2013';
  transform: scale(1.1);
}
.glossary-term {
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--navy);
}
.glossary-tag {
  font-family: 'Inter', sans-serif;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--primary);
  background: rgba(0, 100, 224, 0.08);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-pill);
  letter-spacing: 0.01em;
}
.glossary-item[open] > p,
.glossary-item[open] > .glossary-context {
  animation: slideDown 0.2s ease;
}
.glossary-item p {
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  color: var(--navy);
  line-height: 1.55;
  margin: 0;
  padding: 0 1.25rem 1rem;
}
.glossary-item .glossary-context {
  background: var(--explainer-bg);
  border-top: 1px solid rgba(14, 27, 77, 0.06);
  padding: 0.85rem 1.25rem 1rem;
  color: var(--navy);
}
.glossary-item .glossary-context strong { color: var(--header-dark); }

.glossary-back {
  margin-top: 1.5rem;
  width: 100%;
}

/* ----- Error view ----- */
.error-view {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: var(--card-shadow);
}
.error-view h2 {
  font-family: 'Outfit', sans-serif;
  margin: 0 0 0.5rem 0;
}
.error-view p { color: var(--steel); margin: 0 0 1.25rem 0; }