/* Kling AI Blog — Frontend CSS
   Palette: Deep Indigo #1E1B4B | Electric Blue #3B82F6 | Cyan #06B6D4
   Slate #1E293B | Light Slate #F1F5F9 | White #FFFFFF | Text #0F172A */

:root {
  --kb-deep:   #1E1B4B;
  --kb-blue:   #3B82F6;
  --kb-cyan:   #06B6D4;
  --kb-slate:  #1E293B;
  --kb-light:  #F1F5F9;
  --kb-white:  #FFFFFF;
  --kb-text:   #0F172A;
  --kb-muted:  #64748B;
  --kb-green:  #10B981;
  --kb-amber:  #F59E0B;
  --kb-red:    #EF4444;
  --kb-border: #E2E8F0;
  --kb-radius: 10px;
}

/* ── Base ── */
.kbg-post { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: var(--kb-text); line-height: 1.8; }
.kbg-post h2 { color: var(--kb-deep); font-size: clamp(19px,2.5vw,25px); margin: 2rem 0 1rem; padding-bottom: 8px; border-bottom: 2px solid var(--kb-cyan); }
.kbg-post h3 { color: var(--kb-slate); font-size: 17px; margin: 1.5rem 0 0.5rem; }
.kbg-post p  { margin: 0 0 1rem; }
.kbg-post a  { color: var(--kb-blue); }
.kbg-post a:hover { color: var(--kb-deep); }
.kbg-inline-link { color: var(--kb-blue); font-weight: 600; border-bottom: 1px dotted var(--kb-blue); text-decoration: none; }
.kbg-inline-link:hover { border-bottom-style: solid; }

/* ── Meta bar ── */
.kbg-meta-bar { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; font-size: 13px; color: var(--kb-muted); background: var(--kb-light); padding: 10px 16px; border-radius: var(--kb-radius); }
.kbg-cluster-tag { background: var(--kb-deep); color: #fff; padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }

/* ── TOC ── */
.kbg-toc { background: var(--kb-light); border-left: 4px solid var(--kb-blue); border-radius: 0 var(--kb-radius) var(--kb-radius) 0; padding: 18px 22px; margin-bottom: 28px; }
.kbg-toc strong { display: block; color: var(--kb-deep); font-size: 13px; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 10px; }
.kbg-toc ol { margin: 0; padding-left: 20px; }
.kbg-toc li { font-size: 14px; margin-bottom: 5px; }
.kbg-toc a { color: var(--kb-blue); text-decoration: none; }
.kbg-toc a:hover { text-decoration: underline; }

/* ── Intro ── */
.kbg-intro { margin-bottom: 24px; font-size: 17px; line-height: 1.8; }

/* ── Sections ── */
.kbg-section { background: var(--kb-white); border: 1px solid var(--kb-border); border-radius: var(--kb-radius); padding: 28px 32px; margin-bottom: 20px; }
.kbg-style-structure { border-top: 3px solid var(--kb-blue); }
.kbg-style-tips      { border-top: 3px solid var(--kb-green); }
.kbg-style-warning   { border-top: 3px solid var(--kb-red); background: #FFF5F5; }
.kbg-style-advanced  { border-top: 3px solid var(--kb-deep); background: #F8F7FF; }
.kbg-style-examples  { border-top: 3px solid var(--kb-cyan); }
.kbg-style-workflow  { border-top: 3px solid var(--kb-amber); }
.kbg-style-faq       { border-top: 3px solid var(--kb-muted); background: var(--kb-light); }
.kbg-style-reference { border-top: 3px solid var(--kb-cyan); background: #F0FDFF; }
.kbg-style-technical { border-top: 3px solid var(--kb-slate); }
.kbg-style-conclusion{ border-top: 3px solid var(--kb-green); }

/* ── Prompt formula box ── */
.kbg-formula-box { background: var(--kb-deep); color: #fff; border-radius: 8px; padding: 18px 22px; margin: 16px 0; }
.kbg-formula-box strong { display: block; color: var(--kb-cyan); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 10px; }
.kbg-formula-box code { font-size: 14px; color: #E0F2FE; font-family: 'Courier New', monospace; word-break: break-word; }

/* ── Prompt cards ── */
.kbg-prompt-card { background: #F8F7FF; border: 1px solid #C7D2FE; border-radius: 8px; padding: 16px 18px; margin: 14px 0; }
.kbg-prompt-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--kb-blue); margin-bottom: 8px; }
.kbg-prompt-code { display: block; background: #1E1B4B; color: #E0F2FE; font-family: 'Courier New', monospace; font-size: 13px; padding: 14px 16px; border-radius: 6px; line-height: 1.6; word-break: break-word; white-space: pre-wrap; }

/* ── Component list ── */
.kbg-component-list { list-style: none; padding: 0; }
.kbg-component-list li { padding: 9px 0; border-bottom: 1px solid var(--kb-border); font-size: 15px; }
.kbg-component-list li:last-child { border: none; }
.kbg-component-list strong { color: var(--kb-blue); }

/* ── Tip list ── */
.kbg-tip-list { padding-left: 20px; }
.kbg-tip-list li { padding: 6px 0; font-size: 15px; }
.kbg-tip-list strong { color: var(--kb-deep); }

/* ── Mistake list ── */
.kbg-mistake-list { list-style: none; padding: 0; }
.kbg-mistake-list li { background: #FFF5F5; border-left: 3px solid var(--kb-red); padding: 10px 14px; margin-bottom: 8px; border-radius: 0 6px 6px 0; font-size: 14px; }
.kbg-mistake-list strong { color: #991B1B; }

/* ── Reference table ── */
.kbg-reference-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.kbg-reference-table th { background: var(--kb-deep); color: #fff; padding: 10px 14px; text-align: left; }
.kbg-reference-table td { padding: 9px 14px; border-bottom: 1px solid var(--kb-border); }
.kbg-reference-table tr:nth-child(even) td { background: var(--kb-light); }

/* ── FAQ ── */
.kbg-faq-item { background: var(--kb-white); border: 1px solid var(--kb-border); border-radius: 8px; padding: 18px 20px; margin-bottom: 12px; }
.kbg-faq-item h3 { color: var(--kb-blue); font-size: 16px; margin-bottom: 8px; }
.kbg-faq-item p { font-size: 14px; color: var(--kb-muted); margin: 0; }

/* ── Related posts ── */
.kbg-related-section { margin: 28px 0; }
.kbg-related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; margin-top: 14px; }
.kbg-related-card { display: flex; align-items: center; gap: 12px; background: var(--kb-white); border: 1px solid var(--kb-border); border-radius: var(--kb-radius); padding: 16px; text-decoration: none; transition: box-shadow .2s, border-color .2s, transform .15s; }
.kbg-related-card:hover { box-shadow: 0 4px 16px rgba(59,130,246,.15); border-color: var(--kb-blue); transform: translateY(-2px); text-decoration: none; }
.kbg-ri { font-size: 22px; flex-shrink: 0; }
.kbg-rt { font-size: 13px; color: var(--kb-text); font-weight: 600; line-height: 1.4; flex: 1; }
.kbg-ra { color: var(--kb-blue); font-size: 16px; flex-shrink: 0; }
/* Cluster accent borders */
.kbg-cl-guide,.kbg-cl-advanced { border-left: 3px solid var(--kb-deep); }
.kbg-cl-tips,.kbg-cl-examples  { border-left: 3px solid var(--kb-green); }
.kbg-cl-review,.kbg-cl-comparison { border-left: 3px solid var(--kb-amber); }
.kbg-cl-use-case,.kbg-cl-workflow  { border-left: 3px solid var(--kb-cyan); }
.kbg-cl-technical,.kbg-cl-camera-visual { border-left: 3px solid var(--kb-blue); }

/* ── References ── */
.kbg-references { background: var(--kb-light); border: 1px solid var(--kb-border); border-radius: var(--kb-radius); padding: 22px 26px; margin: 24px 0; }
.kbg-references h2 { font-size: 18px; border: none; padding: 0; margin-top: 0; }
.kbg-references ol { padding-left: 20px; margin: 0; }
.kbg-references li { font-size: 13px; margin-bottom: 6px; color: var(--kb-muted); }
.kbg-references a { color: var(--kb-blue); word-break: break-all; }

/* ── No related ── */
.kbg-no-related { font-size: 14px; color: var(--kb-muted); font-style: italic; }

/* ── Responsive ── */
@media (max-width:640px) {
  .kbg-section { padding: 18px 16px; }
  .kbg-formula-box { padding: 14px; }
  .kbg-prompt-code { font-size: 12px; }
}

/* ── Ebook CTA blocks ── */
.kbg-cta { border-radius: var(--kb-radius); margin: 32px 0; overflow: hidden; }

/* Top CTA */
.kbg-cta-top { background: linear-gradient(135deg, #1E1B4B 0%, #312e81 100%); padding: 32px 36px; display: flex; flex-direction: column; gap: 16px; }
.kbg-cta-badge { display: inline-block; background: rgba(99,102,241,.3); color: #c7d2fe; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; padding: 5px 14px; border-radius: 20px; border: 1px solid rgba(99,102,241,.4); width: fit-content; }
.kbg-cta-body h3 { color: #fff; font-size: clamp(18px, 2.5vw, 22px); margin: 0 0 10px; }
.kbg-cta-body p  { color: rgba(255,255,255,.8); font-size: 15px; margin: 0 0 14px; }
.kbg-cta-list { list-style: none; padding: 0; margin: 0 0 20px; display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.kbg-cta-list li { color: #a5b4fc; font-size: 13px; }
.kbg-cta-btn { display: inline-block; background: #6366F1; color: #fff !important; font-weight: 700; font-size: 15px; padding: 13px 24px; border-radius: 8px; text-decoration: none !important; transition: background .2s, transform .15s; }
.kbg-cta-btn:hover { background: #4F46E5; transform: translateY(-1px); color: #fff !important; }
.kbg-cta-btn-sm { font-size: 13px; padding: 10px 18px; white-space: nowrap; }
.kbg-cta-btn-lg { font-size: 17px; padding: 16px 32px; display: inline-block; }

/* Mid CTA — compact inline banner */
.kbg-cta-mid { background: #EEF2FF; border: 1px solid #c7d2fe; padding: 20px 24px; border-radius: var(--kb-radius); }
.kbg-cta-inner { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.kbg-cta-mid-icon { font-size: 32px; flex-shrink: 0; }
.kbg-cta-inner > div { flex: 1; min-width: 200px; }
.kbg-cta-inner strong { display: block; color: var(--kb-deep); font-size: 15px; margin-bottom: 4px; }
.kbg-cta-inner p { color: var(--kb-muted); font-size: 13px; margin: 0; }

/* Bottom CTA */
.kbg-cta-bottom { background: linear-gradient(135deg, #0F172A 0%, #1e1b4b 100%); padding: 36px 40px; }
.kbg-cta-bottom .kbg-cta-body h3 { font-size: clamp(20px, 2.5vw, 26px); }
.kbg-cta-features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 20px 0 24px; }
.kbg-cta-feat { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.1); border-radius: 8px; padding: 12px; text-align: center; display: flex; flex-direction: column; gap: 6px; }
.kbg-cta-feat span:first-child { font-size: 22px; }
.kbg-cta-feat span:last-child { font-size: 12px; color: #a5b4fc; font-weight: 600; }
.kbg-cta-sub { color: rgba(255,255,255,.4); font-size: 12px; margin-top: 12px; text-align: center; }

@media (max-width: 640px) {
  .kbg-cta-top, .kbg-cta-bottom { padding: 22px 18px; }
  .kbg-cta-list { grid-template-columns: 1fr; }
  .kbg-cta-features { grid-template-columns: repeat(2,1fr); }
  .kbg-cta-inner { flex-direction: column; align-items: flex-start; }
}