/* ═══════════════════════════════════════════════════════════════
   UPSC FAQ Knowledge Hub — styles
═══════════════════════════════════════════════════════════════ */

/* ── Hub landing page ── */
.faq-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}
@media (max-width: 600px) { .faq-stats { grid-template-columns: repeat(2, 1fr); } }

.faq-stat {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 10px;
  padding: var(--space-3);
  text-align: center;
}
.faq-stat__value {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-brand);
  line-height: 1;
}
.faq-stat__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: var(--font-semibold);
  margin-top: 4px;
}

/* Search trigger */
.faq-search-bar { margin-bottom: var(--space-5); }
.faq-search-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  cursor: pointer;
  font-family: inherit;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: left;
  transition: all 0.15s;
}
.faq-search-trigger:hover {
  border-color: var(--color-accent);
  box-shadow: 0 2px 12px rgba(212,160,23,0.08);
}
.faq-search-trigger > span { flex: 1; }
.faq-search-trigger kbd {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--color-text);
}

/* Category grid */
.faq-categories {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}
.faq-cat-card {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  gap: 14px;
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 12px;
  text-decoration: none;
  color: inherit;
  transition: all 0.15s;
  align-items: center;
}
.faq-cat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  border-color: var(--color-accent);
}
.faq-cat-card__icon {
  width: 48px; height: 48px;
  background: var(--color-bg-alt);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}
.faq-cat-card__main { min-width: 0; }
.faq-cat-card__name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 3px;
}
.faq-cat-card__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.4;
  margin-bottom: 6px;
}
.faq-cat-card__count {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  background: rgba(212,160,23,0.08);
  padding: 2px 8px;
  border-radius: 10px;
}
.faq-cat-card__arrow {
  color: var(--color-text-muted);
  font-size: 18px;
  flex-shrink: 0;
  transition: transform 0.15s;
}
.faq-cat-card:hover .faq-cat-card__arrow {
  color: var(--color-accent);
  transform: translateX(4px);
}

/* Popular questions */
.faq-popular { margin-bottom: var(--space-8); }
.faq-popular__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
  color: var(--color-brand);
}
.faq-popular__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 8px;
}
.faq-popular__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: all 0.12s;
}
.faq-popular__item:hover {
  background: var(--color-bg-alt);
  border-color: var(--color-accent);
}
.faq-popular__cat {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}
.faq-popular__q {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  line-height: 1.4;
}

.faq-related { margin-top: var(--space-8); }
.faq-related__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
  color: var(--color-brand);
}

/* ── Category page (with sidebar + accordion) ── */
.faq-cat-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}
@media (max-width: 900px) {
  .faq-cat-layout { grid-template-columns: 1fr; }
}

.faq-cat-sidebar {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 10px;
  padding: var(--space-4);
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}
@media (max-width: 900px) { .faq-cat-sidebar { position: static; max-height: none; } }

.faq-cat-sidebar__title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border-light);
}
.faq-cat-sidebar__list {
  margin: 0;
  padding: 0 0 0 18px;
  list-style: decimal;
  font-size: var(--text-sm);
}
.faq-cat-sidebar__list li { margin-bottom: 8px; line-height: 1.4; }
.faq-cat-sidebar__list a {
  color: var(--color-text-secondary);
  text-decoration: none;
}
.faq-cat-sidebar__list a:hover { color: var(--color-accent); text-decoration: underline; }
.faq-cat-sidebar__back {
  display: inline-block;
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-light);
  font-size: var(--text-xs);
  color: var(--color-accent);
  text-decoration: none;
  font-weight: var(--font-semibold);
}

/* FAQ items in category page */
.faq-cat-main { min-width: 0; }
.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 12px;
  padding: var(--space-5);
  margin-bottom: var(--space-4);
  scroll-margin-top: 80px;
}
.faq-item__question {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-brand);
  margin: 0 0 var(--space-3);
  line-height: 1.3;
}
.faq-item__permalink {
  color: inherit;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.faq-item__permalink:hover { color: var(--color-accent); }
.faq-item__link-icon {
  font-size: 14px;
  opacity: 0;
  transition: opacity 0.15s;
  color: var(--color-accent);
}
.faq-item__permalink:hover .faq-item__link-icon { opacity: 1; }

.faq-item__tldr {
  background: linear-gradient(135deg, rgba(212,160,23,0.08) 0%, rgba(212,160,23,0.04) 100%);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 8px 8px 0;
  padding: 12px 16px;
  margin-bottom: var(--space-3);
}
.faq-item__tldr-label {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.faq-item__tldr p {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.6;
  font-weight: var(--font-medium);
}

.faq-item__answer {
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-text-secondary);
}
.faq-item__answer p { margin: 0 0 var(--space-3); }
.faq-item__answer p:last-child { margin-bottom: 0; }
.faq-item__answer strong { color: var(--color-text); }
.faq-item__answer a { color: var(--color-accent); text-decoration: none; }
.faq-item__answer a:hover { text-decoration: underline; }
.faq-item__answer ul, .faq-item__answer ol { margin: 0 0 var(--space-3) 18px; }
.faq-item__answer li { margin-bottom: 4px; }
.faq-item__answer h3 { font-size: 15px; font-weight: 700; color: var(--color-text); margin: var(--space-4) 0 var(--space-2); line-height: 1.35; }
.faq-item__answer h4 { font-size: 14px; font-weight: 700; color: var(--color-text); margin: var(--space-3) 0 var(--space-2); }
.faq-item__answer em { font-style: italic; color: var(--color-text); }
.faq-item__answer code { background: rgba(15,76,58,0.08); padding: 1px 5px; border-radius: 4px; font-family: var(--font-mono, monospace); font-size: 0.92em; }
.faq-item__answer blockquote { margin: var(--space-3) 0; padding: 8px 14px; border-left: 3px solid var(--color-accent); background: rgba(212,160,23,0.06); font-style: italic; color: var(--color-text-secondary); }
.faq-item__answer table { width: 100%; border-collapse: collapse; margin: var(--space-3) 0; font-size: 13px; }
.faq-item__answer th { background: var(--color-bg-subtle, #f6f7f8); padding: 8px 10px; text-align: left; font-weight: 700; border: 1px solid var(--color-border-light); color: var(--color-text); }
.faq-item__answer td { padding: 8px 10px; border: 1px solid var(--color-border-light); vertical-align: top; }
.faq-item__answer tr:nth-child(even) td { background: rgba(0,0,0,0.015); }
.faq-item__answer hr { border: none; border-top: 1px dashed var(--color-border-light); margin: var(--space-4) 0; }
@media (max-width: 600px) {
  .faq-item__answer table { font-size: 12px; display: block; overflow-x: auto; }
  .faq-item__answer th, .faq-item__answer td { padding: 6px 8px; min-width: 90px; }
}

.faq-item__sources {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px dashed var(--color-border-light);
  font-size: 11px;
  color: var(--color-text-muted);
  line-height: 1.6;
}
.faq-item__sources-label {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-right: 6px;
}
.faq-item__source {
  color: var(--color-accent);
  text-decoration: none;
}
.faq-item__source:hover { text-decoration: underline; }

.faq-item__related {
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.7;
}
.faq-item__related strong { color: var(--color-text-secondary); margin-right: 6px; }
.faq-item__related a { color: var(--color-accent); text-decoration: none; }
.faq-item__related a:hover { text-decoration: underline; }

/* ── Single question page ── */
.faq-single {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 14px;
  padding: var(--space-6);
}
@media (max-width: 600px) { .faq-single { padding: var(--space-4); border-radius: 10px; } }

.faq-single__tldr {
  background: linear-gradient(135deg, rgba(212,160,23,0.1) 0%, rgba(212,160,23,0.04) 100%);
  border: 1px solid rgba(212,160,23,0.25);
  border-radius: 10px;
  padding: 16px 20px;
  margin-bottom: var(--space-5);
}
.faq-single__tldr-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.faq-single__tldr p {
  margin: 0;
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.6;
  font-weight: var(--font-medium);
}

.faq-single__answer {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--color-text);
}
.faq-single__answer p { margin: 0 0 var(--space-3); }
.faq-single__answer strong { color: var(--color-text); font-weight: var(--font-semibold); }
.faq-single__answer a { color: var(--color-accent); text-decoration: none; font-weight: var(--font-medium); }
.faq-single__answer a:hover { text-decoration: underline; }
.faq-single__answer ul, .faq-single__answer ol { margin: 0 0 var(--space-3) var(--space-5); }
.faq-single__answer li { margin-bottom: 6px; line-height: 1.7; }
.faq-single__answer h3 { font-size: 18px; font-weight: 700; color: var(--color-text); margin: var(--space-5) 0 var(--space-2); line-height: 1.35; font-family: var(--font-heading, inherit); }
.faq-single__answer h3:first-child { margin-top: 0; }
.faq-single__answer h4 { font-size: 16px; font-weight: 700; color: var(--color-text); margin: var(--space-4) 0 var(--space-2); }
.faq-single__answer em { font-style: italic; color: var(--color-text); }
.faq-single__answer code { background: rgba(15,76,58,0.08); padding: 2px 6px; border-radius: 4px; font-family: var(--font-mono, monospace); font-size: 0.92em; color: var(--color-brand); }
.faq-single__answer pre { background: var(--color-bg-subtle, #f6f7f8); border: 1px solid var(--color-border-light); border-radius: 8px; padding: var(--space-3); overflow-x: auto; margin: var(--space-3) 0; }
.faq-single__answer pre code { background: transparent; padding: 0; }
.faq-single__answer blockquote { margin: var(--space-4) 0; padding: 12px 18px; border-left: 4px solid var(--color-accent); background: rgba(212,160,23,0.06); font-style: italic; color: var(--color-text-secondary); border-radius: 0 8px 8px 0; }
.faq-single__answer table { width: 100%; border-collapse: collapse; margin: var(--space-4) 0; font-size: 14px; border: 1px solid var(--color-border-light); border-radius: 8px; overflow: hidden; }
.faq-single__answer th { background: var(--color-bg-subtle, #f6f7f8); padding: 10px 12px; text-align: left; font-weight: 700; border-bottom: 2px solid var(--color-border); color: var(--color-text); }
.faq-single__answer td { padding: 10px 12px; border-top: 1px solid var(--color-border-light); vertical-align: top; }
.faq-single__answer tr:nth-child(even) td { background: rgba(0,0,0,0.015); }
.faq-single__answer hr { border: none; border-top: 1px dashed var(--color-border-light); margin: var(--space-5) 0; }
@media (max-width: 600px) {
  .faq-single__answer { font-size: 15px; line-height: 1.7; }
  .faq-single__answer h3 { font-size: 16px; }
  .faq-single__answer h4 { font-size: 15px; }
  .faq-single__answer table { font-size: 13px; display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .faq-single__answer th, .faq-single__answer td { padding: 8px 10px; min-width: 100px; }
}

.faq-single__sources,
.faq-single__related,
.faq-single__tools-cta {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
}
.faq-single__sources h3,
.faq-single__related h3,
.faq-single__tools-cta h3 {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  color: var(--color-brand);
  margin: 0 0 var(--space-3);
}
.faq-single__sources ul {
  margin: 0;
  padding-left: 20px;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
}
.faq-single__sources a {
  color: var(--color-accent);
  text-decoration: none;
}
.faq-single__sources a:hover { text-decoration: underline; }

.faq-single__related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 8px;
}
.faq-single__related-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  background: var(--color-bg-alt);
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: all 0.12s;
}
.faq-single__related-item:hover {
  background: var(--color-bg);
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}
.faq-single__related-cat {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}
.faq-single__related-q {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  line-height: 1.4;
}

.faq-single__nav {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: space-between;
}
.faq-single__back {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-accent);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 6px;
  background: var(--color-bg-alt);
  transition: background 0.12s;
}
.faq-single__back:hover { background: var(--color-bg); }
.faq-single__back--hub { color: var(--color-text-secondary); }