/* ============================================================
   PostbackFlow — Guide Pages Stylesheet (guide.php + guide-detail.php)
   Extends landing.css tokens — load after landing.css
   ============================================================ */

/* ---- GUIDE LIST PAGE -------------------------------------- */
.guide-page-hero {
  padding: 120px 0 52px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.guide-page-hero-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.guide-page-eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.guide-page-eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
}
.guide-page-h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  color: var(--ink);
  margin-bottom: 10px;
}
.guide-page-sub {
  font-size: 1rem;
  color: var(--ink-2);
  max-width: 480px;
  line-height: 1.65;
}
.guide-page-count {
  font-size: 0.8125rem;
  color: var(--ink-3);
  white-space: nowrap;
  padding-bottom: 4px;
}

/* Guide grid */
.guide-section {
  padding: 52px 0 80px;
}
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}
.guide-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s, box-shadow 0.2s;
  text-decoration: none;
}
.guide-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
  text-decoration: none;
}
.guide-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.guide-card-category {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  background: var(--primary-light);
  border: 1px solid rgba(55,48,163,0.15);
  border-radius: 100px;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.guide-card-date {
  font-size: 0.75rem;
  color: var(--ink-3);
}
.guide-card-icon {
  font-size: 1.75rem;
  margin-bottom: 14px;
  line-height: 1;
}
.guide-card-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 8px;
}
.guide-card-desc {
  font-size: 0.875rem;
  color: var(--ink-2);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 20px;
}
.guide-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
  transition: gap 0.15s;
  margin-top: auto;
}
.guide-card:hover .guide-card-cta { gap: 9px; }

/* Empty state */
.guide-empty {
  text-align: center;
  padding: 80px 20px;
  color: var(--ink-2);
}
.guide-empty p { font-size: 1.05rem; }

/* ---- GUIDE DETAIL PAGE ------------------------------------ */
.guide-detail-wrap {
  max-width: 740px;
  margin-inline: auto;
  padding: 0 24px;
}
.guide-detail-header {
  padding: 112px 0 48px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.guide-back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-3);
  margin-bottom: 28px;
  transition: color 0.15s;
}
.guide-back-link:hover { color: var(--primary); }
.guide-back-link svg { transition: transform 0.15s; }
.guide-back-link:hover svg { transform: translateX(-3px); }
.guide-meta-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.guide-category-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background: var(--primary-light);
  border: 1px solid rgba(55,48,163,0.2);
  border-radius: 100px;
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.guide-date-str {
  font-size: 0.8125rem;
  color: var(--ink-3);
}
.guide-article-title {
  font-size: clamp(1.65rem, 4vw, 2.4rem);
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: 16px;
}
.guide-article-desc {
  font-size: 1.0625rem;
  color: var(--ink-2);
  line-height: 1.7;
  border-left: 3px solid var(--primary);
  padding-left: 16px;
  font-weight: 400;
}

/* Article body */
.guide-body {
  padding: 48px 0 80px;
}
.guide-content {
  color: var(--ink-2);
}
.guide-content h2 {
  font-family: 'Sora', sans-serif;
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.015em;
  margin: 44px 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.guide-content h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--ink);
  margin: 28px 0 10px;
}
.guide-content p {
  margin-bottom: 18px;
  font-size: 0.9375rem;
  line-height: 1.8;
}
.guide-content ul,
.guide-content ol {
  margin-left: 22px;
  margin-bottom: 20px;
}
.guide-content li {
  margin-bottom: 8px;
  font-size: 0.9375rem;
  line-height: 1.7;
}
.guide-content strong { color: var(--ink); font-weight: 600; }
.guide-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity 0.15s;
}
.guide-content a:hover { opacity: 0.75; }

/* Inline code */
.guide-content code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.8125rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--primary);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Code block */
.guide-content pre {
  background: var(--ink);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius);
  padding: 20px 22px;
  overflow-x: auto;
  margin: 24px 0;
  position: relative;
}
.guide-content pre code {
  background: transparent;
  border: none;
  color: #e2e8f0;
  font-size: 0.8125rem;
  padding: 0;
  border-radius: 0;
  display: block;
  line-height: 1.7;
}
.copy-code-btn {
  position: absolute;
  top: 10px;
  right: 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.5);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: all 0.15s;
  letter-spacing: 0.04em;
}
.copy-code-btn:hover {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

/* Blockquote / callout */
.guide-content blockquote {
  border-left: 3px solid var(--amber);
  background: var(--amber-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 14px 18px;
  margin: 24px 0;
  font-size: 0.9375rem;
  color: var(--ink-2);
  line-height: 1.7;
}
.guide-content blockquote p { margin-bottom: 0; }

/* Table */
.guide-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.875rem;
}
.guide-content th {
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  color: var(--ink);
  font-size: 0.8125rem;
}
.guide-content td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  color: var(--ink-2);
}
.guide-content tr:nth-child(even) td {
  background: var(--surface-2);
}

/* Nav active state on guide pages */
.nav-link-active {
  color: var(--ink) !important;
  font-weight: 600 !important;
}

/* ---- RESPONSIVE ------------------------------------------- */
@media (max-width: 991px) {
  .guide-page-hero { padding-top: 96px; }
  .guide-page-hero-inner { gap: 16px; }
  .guide-detail-header { padding-top: 88px; }
  .guide-grid { grid-template-columns: 1fr; }
}