/* ============================================
   AD UNIT CONTAINERS
   Google AdSense placements — replace data-ad-client
   and data-ad-slot values with your own after approval.
   ============================================ */

/* ---- SHARED AD WRAPPER ---- */
.ad-unit {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  transition: border-color var(--transition-base);
}

.ad-unit::before {
  content: 'Advertisement';
  position: absolute;
  top: 4px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 9px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
  pointer-events: none;
  z-index: 1;
  font-weight: 500;
}

/* Ensure AdSense ins tags fill container */
.ad-unit ins.adsbygoogle {
  display: block !important;
  width: 100% !important;
}

/* ============================================
   1. TOP LEADERBOARD — below topbar, above calculator
      Best for: high viewability, first impression
      Size: 728x90 desktop | responsive mobile
      Expected CPM: ₹50–150
   ============================================ */
.ad-leaderboard {
  width: 100%;
  min-height: 90px;
  margin: var(--space-6) 0 var(--space-4);
  padding-top: 16px; /* room for 'Advertisement' label */
}

@media (max-width: 767px) {
  .ad-leaderboard { min-height: 60px; }
}

/* ============================================
   2. STICKY SIDEBAR AD — right rail, follows scroll
      Best for: passive views, long sessions
      Size: 300x600 or 300x250 (auto-collapse)
      Expected CPM: ₹80–200 (highest CPM size)
   ============================================ */
.ad-sidebar-sticky {
  position: sticky;
  top: calc(var(--topbar-height) + var(--space-4));
  width: 300px;
  min-height: 250px;
  padding-top: 16px;
  margin-left: var(--space-4);
  flex-shrink: 0;
  align-self: flex-start;
}

@media (max-width: 1279px) {
  .ad-sidebar-sticky { display: none; }
}

/* ============================================
   3. IN-RESULTS AD — shown after user calculates
      Best for: high intent moment, peak attention
      Size: 336x280 (large rectangle)
      Expected CPM: ₹60–180
   ============================================ */
.ad-in-results {
  min-height: 280px;
  width: 100%;
  padding-top: 16px;
  margin: var(--space-4) 0;
}

@media (max-width: 479px) {
  .ad-in-results { min-height: 250px; }
}

/* ============================================
   4. MID-CONTENT AD — between calculator and FAQ
      Best for: users who scroll to read more
      Size: 300x250 responsive
      Expected CPM: ₹40–100
   ============================================ */
.ad-mid-content {
  min-height: 250px;
  max-width: 728px;
  margin: var(--space-8) auto;
  padding-top: 16px;
}

/* ============================================
   5. IN-CONTENT / NATIVE — inside FAQ or How-it-Works
      Best for: blending with content, high CTR
      Size: responsive / auto
      Expected CPM: ₹30–90
   ============================================ */
.ad-in-content {
  min-height: 200px;
  width: 100%;
  padding-top: 16px;
  margin: var(--space-6) 0;
}

/* ============================================
   6. BELOW FOLD — above footer, end of page
      Best for: users who read entire page
      Size: 728x90 / responsive
      Expected CPM: ₹25–70
   ============================================ */
.ad-below-fold {
  min-height: 90px;
  width: 100%;
  padding-top: 16px;
  margin: var(--space-6) 0 var(--space-4);
}

/* ============================================
   7. MOBILE ANCHOR / STICKY BOTTOM
      Best for: mobile revenue, always visible
      Size: 320x50
      Expected CPM: ₹20–60
   ============================================ */
.ad-mobile-anchor {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  z-index: var(--z-overlay);
  padding-top: 10px;
  align-items: center;
  justify-content: center;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
}

@media (max-width: 767px) {
  .ad-mobile-anchor { display: flex; }
  /* Add bottom padding so anchor doesn't cover content */
  .main-content { padding-bottom: 70px; }
  .footer { margin-bottom: 60px; }
}

/* ============================================
   LAYOUT HELPER: Side-by-side calculator + sidebar ad
   ============================================ */
.calculator-with-sidebar {
  display: flex;
  align-items: flex-start;
  gap: 0;
}

.calculator-main-col {
  flex: 1;
  min-width: 0;
}

/* ============================================
   PAGE WRAPPER WITH RIGHT RAIL
   ============================================ */
.page-with-rail {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
}

.page-main-content {
  flex: 1;
  min-width: 0;
}

.page-right-rail {
  width: 300px;
  flex-shrink: 0;
}

@media (max-width: 1279px) {
  .page-right-rail { display: none; }
}

/* ============================================
   SEO CONTENT SECTIONS
   ============================================ */
.seo-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-top: var(--space-8);
}

.seo-section h2 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-5);
  color: var(--text-primary);
}

.seo-section h3 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.seo-section p {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.seo-section ul {
  list-style: disc;
  padding-left: var(--space-6);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 2;
}

/* FAQ */
.faq-list { display: flex; flex-direction: column; gap: var(--space-3); }

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: var(--space-4) var(--space-5);
  text-align: left;
  background: var(--bg-input);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  transition: background var(--transition-fast);
}

.faq-question:hover { background: var(--bg-card-hover); }

.faq-question::after {
  content: '▾';
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.faq-item.open .faq-question::after {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 var(--space-5);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.open .faq-answer {
  max-height: 600px;
  padding: var(--space-4) var(--space-5);
}

/* Related calculators */
.related-calcs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.related-calc-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.related-calc-link:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--color-primary); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb-sep { color: var(--text-muted); }

/* How it works steps */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.step-card {
  text-align: center;
  padding: var(--space-5);
  background: var(--bg-body);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
}

.step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-3);
}

.step-card h4 {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-1);
}

.step-card p {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin: 0;
}