/* ============================================
   STARR PREP — Marketing Site Styles
   Emerald green (#10b981) + Gold (#f59e0b)
   Mobile-first, BEM naming
   ============================================ */

/* --- Variables --- */
:root {
  --color-primary: #10b981;
  --color-primary-dark: #059669;
  --color-primary-light: #34d399;
  --color-accent: #f59e0b;
  --color-accent-dark: #d97706;
  --color-surface-dark: #0a1210;
  --color-surface: #152019;
  --color-surface-light: #1e2e28;
  --color-surface-lighter: #2a3f36;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-text-bright: #ffffff;
  --color-border: rgba(16, 185, 129, 0.15);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --container-max: 1200px;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: 0.25s ease;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-family);
  background: var(--color-surface-dark);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-primary-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* --- Layout --- */
.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 1.5rem; }

.section {
  padding: 5rem 0;
}
.section--alt {
  background: var(--color-surface);
}
.section--cta {
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-dark) 100%);
  text-align: center;
  padding: 5rem 0;
}
.section--cta h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-text-bright);
  margin-bottom: 1rem;
}
.section--cta p {
  color: var(--color-text-muted);
  font-size: 1.125rem;
  margin-bottom: 2rem;
}
.section__header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.section__header h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-text-bright);
  margin-bottom: 0.75rem;
}
.section__lead {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-family);
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  font-size: 1rem;
  padding: 0.75rem 1.75rem;
  gap: 0.5rem;
}
.btn--gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: var(--color-surface-dark);
  font-weight: 700;
}
.btn--gradient:hover {
  color: var(--color-surface-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.35);
}
.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-border);
}
.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-light);
}
.btn--sm { font-size: 0.875rem; padding: 0.5rem 1.25rem; }
.btn--lg { font-size: 1.0625rem; padding: 0.875rem 2rem; }
.btn--xl { font-size: 1.125rem; padding: 1rem 2.5rem; font-weight: 700; }
.btn--full { width: 100%; }

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 18, 16, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text-bright);
}
.nav__logo:hover { color: var(--color-text-bright); }
.nav__logo-img {
  height: 32px;
  width: auto;
}
.nav__links {
  display: none;
  align-items: center;
  gap: 2rem;
}
.nav__link {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition);
}
.nav__link:hover { color: var(--color-text-bright); }
.nav__actions { display: flex; align-items: center; gap: 1rem; }
.nav__menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: 0.25rem;
}
.nav__mobile {
  display: none;
  flex-direction: column;
  padding: 1rem 1.5rem 1.5rem;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}
.nav__mobile a {
  padding: 0.75rem 0;
  color: var(--color-text);
  font-weight: 500;
  border-bottom: 1px solid var(--color-border);
}
.nav__mobile.is-open { display: flex; }

@media (min-width: 768px) {
  .nav__links { display: flex; }
  .nav__menu-btn { display: none; }
  .nav__mobile { display: none !important; }
}

/* --- Hero --- */
.hero {
  position: relative;
  padding: 8rem 0 5rem;
  overflow: hidden;
  text-align: center;
}
.hero__orbs {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.3;
}
.hero__orb--primary {
  width: 500px;
  height: 500px;
  background: var(--color-primary);
  top: -150px;
  right: -100px;
}
.hero__orb--accent {
  width: 400px;
  height: 400px;
  background: var(--color-accent);
  bottom: -100px;
  left: -100px;
  opacity: 0.15;
}
.hero__content {
  position: relative;
  z-index: 1;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: 100px;
  padding: 0.375rem 1rem;
  font-size: 0.875rem;
  color: var(--color-primary-light);
  margin-bottom: 1.5rem;
}
.hero__title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-text-bright);
  margin-bottom: 1.5rem;
}
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 1.5rem;
}
.hero__note {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

@media (min-width: 768px) {
  .hero { padding: 10rem 0 6rem; }
  .hero__title { font-size: 3.5rem; }
}
@media (min-width: 1024px) {
  .hero__title { font-size: 4rem; }
}

/* --- Verticals Grid --- */
.verticals-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .verticals-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .verticals-grid { grid-template-columns: repeat(4, 1fr); }
}

.vertical-card {
  background: var(--color-surface-dark);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
}
.vertical-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(16, 185, 129, 0.1);
}
.vertical-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}
.vertical-card__icon--sales { background: rgba(245, 158, 11, 0.15); color: var(--color-accent); }
.vertical-card__icon--healthcare { background: rgba(239, 68, 68, 0.15); color: #ef4444; }
.vertical-card__icon--sap { background: rgba(59, 130, 246, 0.15); color: #3b82f6; }
.vertical-card__icon--pm { background: rgba(139, 92, 246, 0.15); color: #8b5cf6; }
.vertical-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-bright);
  margin-bottom: 0.75rem;
}
.vertical-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}
.vertical-card__topics li {
  padding: 0.375rem 0;
  font-size: 0.875rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  padding-left: 1rem;
  position: relative;
}
.vertical-card__topics li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}
.vertical-card__topics li:last-child { border-bottom: none; }

/* --- Assessment Modes Grid --- */
.modes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .modes-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .modes-grid { grid-template-columns: repeat(3, 1fr); }
}

.mode-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
}
.mode-card:hover {
  border-color: var(--color-primary);
}
.mode-card__number {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 1rem;
}
.mode-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-bright);
  margin-bottom: 0.75rem;
}
.mode-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- Steps Grid --- */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 768px) {
  .steps-grid { grid-template-columns: repeat(3, 1fr); }
}

.step-card {
  text-align: center;
  padding: 2rem;
}
.step-card__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: var(--color-surface-dark);
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
}
.step-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-bright);
  margin-bottom: 0.75rem;
}
.step-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- Pricing --- */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: start;
}
@media (min-width: 768px) {
  .pricing-grid { grid-template-columns: repeat(3, 1fr); }
}

.pricing-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  position: relative;
  transition: all var(--transition);
}
.pricing-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}
.pricing-card--featured {
  border-color: var(--color-primary);
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.08) 0%, var(--color-surface) 100%);
}
.pricing-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: var(--color-surface-dark);
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 0.25rem 1rem;
  border-radius: 100px;
  white-space: nowrap;
}
.pricing-card__header {
  text-align: center;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}
.pricing-card__header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-bright);
  margin-bottom: 0.75rem;
}
.pricing-card__amount {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-text-bright);
}
.pricing-card__period {
  font-size: 1rem;
  color: var(--color-text-muted);
}
.pricing-card__features {
  margin-bottom: 2rem;
}
.pricing-card__features li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.9375rem;
  color: var(--color-text);
}
.pricing-card__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* --- Comparison Table --- */
.comparison-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.comparison-table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  font-size: 0.9375rem;
}
.comparison-table th,
.comparison-table td {
  padding: 1rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.comparison-table th {
  font-weight: 700;
  color: var(--color-text-bright);
  background: var(--color-surface-dark);
  position: sticky;
  top: 0;
}
.comparison-table td {
  color: var(--color-text-muted);
}
.comparison-table__highlight {
  color: var(--color-primary-light) !important;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.05);
}

/* --- FAQ --- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1.25rem 0;
  background: none;
  border: none;
  color: var(--color-text-bright);
  font-family: var(--font-family);
  font-size: 1.0625rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  gap: 1rem;
  transition: color var(--transition);
}
.faq-item__question:hover { color: var(--color-primary-light); }
.faq-item__icon {
  flex-shrink: 0;
  transition: transform var(--transition);
  color: var(--color-text-muted);
}
.faq-item.is-open .faq-item__icon {
  transform: rotate(180deg);
}
.faq-item__answer {
  display: none;
  padding-bottom: 1.25rem;
}
.faq-item.is-open .faq-item__answer {
  display: block;
}
.faq-item__answer p {
  color: var(--color-text-muted);
  line-height: 1.7;
  font-size: 0.9375rem;
}

/* --- Footer --- */
.footer {
  background: var(--color-surface-dark);
  border-top: 1px solid var(--color-border);
  padding: 3rem 0 2rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}
@media (min-width: 768px) {
  .footer__grid { grid-template-columns: 1.5fr 2fr; }
}
.footer__brand p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-top: 0.75rem;
  max-width: 300px;
}
.footer__cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.footer__heading {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-text-bright);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}
.footer__col a {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  padding: 0.25rem 0;
}
.footer__col a:hover { color: var(--color-primary-light); }
.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
  text-align: center;
}
.footer__bottom p {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}

/* --- SEO Pages (shared styles for generated pages) --- */
.seo-page-wrapper {
  padding-top: 5rem;
  min-height: 100vh;
}
.breadcrumbs {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.breadcrumbs a { color: var(--color-primary-light); }
.breadcrumbs .separator { color: var(--color-text-muted); }
.breadcrumbs .current { color: var(--color-text); }

.hub-header {
  margin-bottom: 2rem;
}
.hub-header h1 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-text-bright);
  margin-bottom: 1rem;
}
.hub-intro {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}
.hub-stats {
  display: flex;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.hub-cta-banner {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}
.hub-cta-banner p {
  color: var(--color-text);
  font-size: 0.9375rem;
}

.hub-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 1024px) {
  .hub-layout { grid-template-columns: 2.5fr 1fr; }
}

.question-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
  transition: all var(--transition);
}
.question-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}
.question-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text-bright);
  margin: 0.5rem 0;
}
.question-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
}
.question-preview {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  line-height: 1.5;
}
.difficulty {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  text-transform: uppercase;
}
.difficulty--entry { background: rgba(52, 211, 153, 0.15); color: #34d399; }
.difficulty--midlevel { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.difficulty--senior { background: rgba(239, 68, 68, 0.15); color: #ef4444; }
.difficulty--expert { background: rgba(139, 92, 246, 0.15); color: #8b5cf6; }
.read-time { color: var(--color-text-muted); }
.category { color: var(--color-primary-light); font-weight: 500; }

.hub-sidebar .sidebar-section {
  margin-bottom: 2rem;
}
.hub-sidebar h3,
.hub-sidebar h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-bright);
  margin-bottom: 1rem;
}
.topic-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.topic-link {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}
.topic-link:hover, .topic-link.active {
  background: rgba(16, 185, 129, 0.08);
  color: var(--color-primary-light);
}
.topic-count {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.sidebar-cta {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.sidebar-cta p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

/* Question detail page */
.question-header {
  margin-bottom: 2rem;
}
.question-header h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-text-bright);
  margin-top: 0.75rem;
}
.question-meta {
  display: flex;
  gap: 1rem;
  align-items: center;
  font-size: 0.875rem;
  flex-wrap: wrap;
}
.question-block {
  background: var(--color-surface);
  border-left: 4px solid var(--color-primary);
  padding: 1.5rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1rem 0;
  font-size: 1.0625rem;
  color: var(--color-text-bright);
  font-style: italic;
}
.seo-question-page section {
  margin-bottom: 2.5rem;
}
.seo-question-page h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-bright);
  margin-bottom: 1rem;
}
.seo-question-page p {
  color: var(--color-text);
  line-height: 1.7;
}
.key-points ul {
  padding-left: 1.25rem;
}
.key-points li {
  list-style: disc;
  padding: 0.375rem 0;
  color: var(--color-text);
  font-size: 0.9375rem;
}
.cta-card {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(245, 158, 11, 0.05) 100%);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
}
.cta-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-bright);
  margin-bottom: 1rem;
}
.cta-card p {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 768px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
.related-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: all var(--transition);
}
.related-card:hover {
  border-color: var(--color-primary);
}
.related-card h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-bright);
  margin: 0.5rem 0 0.25rem;
}
.related-category {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.back-to-hub a {
  color: var(--color-primary-light);
  font-weight: 500;
}

.category-section {
  margin-bottom: 2.5rem;
}
.category-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-bright);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border);
}