@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --dark:#0a0e1a;--dark-2:#0d1631;--blue:#4988ff;--blue-dark:#2c6fea;
  --green:#00c896;--muted:rgba(255,255,255,0.65);--body-bg:#f5f7fa;
  --card-bg:#fff;--card-border:rgba(0,0,0,0.08);--text:#0a0e1a;
  --text-2:#4a5568;--shadow-sm:0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:0 8px 30px rgba(0,0,0,0.10);--radius:14px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:'Inter',-apple-system,sans-serif;background:var(--body-bg);color:var(--text);padding-top:4.5rem;overflow-x:hidden;}

/* ── Hero ── */
.kb-hero{background:linear-gradient(135deg,var(--dark) 0%,var(--dark-2) 100%);padding:3.5rem 1.5rem 3rem;text-align:center;}
.kb-hero.slim{padding:2.5rem 1.5rem 2.25rem;text-align:left;}
.kb-title{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:900;color:#fff;letter-spacing:-0.03em;margin-bottom:0.5rem;}
.kb-subtitle{font-size:1rem;color:var(--muted);margin-bottom:2rem;}
.kb-hero.slim .kb-title{font-size:clamp(1.3rem,3vw,2rem);margin-bottom:0.3rem;}
.kb-hero.slim .kb-subtitle{margin-bottom:0;font-size:0.88rem;}

/* ── Search Bar ── */
.kb-search-bar{max-width:600px;margin:0 auto;display:flex;}
.kb-search-bar input{flex:1;padding:0.85rem 1.25rem;font-size:1rem;border:none;border-radius:100px 0 0 100px;outline:none;font-family:'Inter',sans-serif;}
.kb-search-bar button{padding:0.85rem 1.5rem;background:var(--blue);color:#fff;border:none;border-radius:0 100px 100px 0;font-weight:600;cursor:pointer;font-size:0.9rem;white-space:nowrap;}
.kb-search-bar button:hover{background:var(--blue-dark);}

/* ── Breadcrumb ── */
.breadcrumb-trail{display:flex;gap:0.4rem;align-items:center;font-size:0.82rem;margin-bottom:0.85rem;flex-wrap:wrap;}
.breadcrumb-trail a{color:rgba(255,255,255,0.55);text-decoration:none;}
.breadcrumb-trail a:hover{color:#fff;}
.breadcrumb-trail .sep{color:rgba(255,255,255,0.25);}
.breadcrumb-trail .cur{color:rgba(255,255,255,0.85);}

/* ── Content container ── */
.kb-content{max-width:1100px;margin:0 auto;padding:2.5rem 1.5rem 4rem;}
@media(max-width:600px){.kb-content{padding:1.5rem 1rem 3rem;}}

/* ── Category grid ── */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.25rem;margin-bottom:2.5rem;}
@media(max-width:900px){.cat-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:520px){.cat-grid{grid-template-columns:1fr 1fr;gap:0.85rem;}}
.cat-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:1.75rem 1.25rem 1.5rem;text-align:center;text-decoration:none;color:var(--text);transition:box-shadow 0.2s,transform 0.15s;display:flex;flex-direction:column;align-items:center;}
.cat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);}
.cat-icon{font-size:1.8rem;color:var(--blue);margin-bottom:0.85rem;}
.cat-title{font-size:0.97rem;font-weight:700;margin-bottom:0.3rem;}
.cat-count{color:var(--text-2);font-size:0.8rem;}
.cat-desc{color:var(--text-2);font-size:0.8rem;margin-top:0.5rem;line-height:1.5;display:none;}
@media(max-width:900px){.cat-desc{display:block;}}

/* ── Category badges ── */
.cat-badge{display:inline-block;font-size:0.68rem;font-weight:700;letter-spacing:0.05em;text-transform:uppercase;padding:0.18rem 0.5rem;border-radius:5px;margin-bottom:0.5rem;}
.badge-getting-started{background:rgba(73,136,255,0.1);color:var(--blue);}
.badge-troubleshooting{background:rgba(255,165,0,0.12);color:#b07000;}
.badge-account-billing{background:rgba(0,200,150,0.1);color:#00846a;}
.badge-privacy-security{background:rgba(140,100,220,0.1);color:#7040c0;}

/* ── Featured cards ── */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;margin-bottom:2.5rem;}
@media(max-width:900px){.feat-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:560px){.feat-grid{grid-template-columns:1fr;}}
.feat-card{display:block;background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius);padding:1.4rem 1.25rem;text-decoration:none;color:var(--text);transition:box-shadow 0.2s,transform 0.15s;box-shadow:var(--shadow-sm);}
.feat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);}
.feat-title{font-size:0.95rem;font-weight:700;color:var(--blue);margin-bottom:0.4rem;}
.feat-meta{color:var(--text-2);font-size:0.78rem;margin-bottom:0.5rem;}
.feat-snippet{color:var(--text-2);font-size:0.87rem;line-height:1.55;}

/* ── Article list items ── */
.article-item{display:block;background:var(--card-bg);border:1px solid var(--card-border);border-left:4px solid var(--blue);border-radius:var(--radius);padding:1.05rem 1.35rem;margin-bottom:0.65rem;text-decoration:none;color:var(--text);transition:box-shadow 0.18s,transform 0.15s;}
.article-item:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);}
.article-title{font-size:0.95rem;font-weight:700;color:var(--blue);margin-bottom:0.2rem;}
.article-snippet{color:var(--text-2);font-size:0.87rem;line-height:1.5;}
.article-meta{font-size:0.75rem;color:var(--text-2);margin-bottom:0.25rem;}

/* ── Labels & headings ── */
.section-label{font-size:0.72rem;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;color:var(--text-2);margin-bottom:1.1rem;display:block;}
.section-h2{font-size:1.15rem;font-weight:800;color:var(--text);margin-bottom:1rem;}

/* ── Cards ── */
.kb-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius);box-shadow:var(--shadow-sm);}
.kb-card-padded{padding:2rem 2.5rem;}
@media(max-width:600px){.kb-card-padded{padding:1.5rem 1.25rem;}}

/* ── Sidebar layout ── */
.two-col{display:grid;grid-template-columns:220px 1fr;gap:2rem;align-items:start;}
@media(max-width:768px){.two-col{grid-template-columns:1fr;}}
.sidebar-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:1.25rem;position:sticky;top:5.5rem;}
.sidebar-card h2{font-size:0.72rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;color:var(--text-2);margin-bottom:0.85rem;}
.sidebar-card a{color:var(--text-2);text-decoration:none;font-weight:500;font-size:0.86rem;padding:0.3rem 0.5rem;border-radius:7px;display:block;transition:background 0.15s,color 0.15s;border-left:2px solid transparent;}
.sidebar-card a:hover,.sidebar-card a.active{color:var(--blue);background:rgba(73,136,255,0.07);border-left-color:var(--blue);}

/* ── Article nav bar ── */
.kb-nav-bar{background:#fff;border-bottom:1px solid var(--card-border);padding:0.75rem 1.5rem;position:sticky;top:4.5rem;z-index:50;}
.kb-nav-bar-inner{max-width:1100px;margin:0 auto;display:flex;gap:0.6rem;align-items:center;flex-wrap:wrap;}
.btn-back{display:inline-flex;align-items:center;gap:0.35rem;padding:0.45rem 0.9rem;border-radius:100px;background:var(--body-bg);border:1px solid var(--card-border);color:var(--text);font-weight:600;font-size:0.83rem;cursor:pointer;font-family:'Inter',sans-serif;text-decoration:none;white-space:nowrap;}
.btn-back:hover{background:#e8eaf0;}
.btn-guides{display:inline-flex;align-items:center;gap:0.35rem;padding:0.45rem 1rem;border-radius:100px;background:var(--blue);color:#fff;font-weight:600;font-size:0.83rem;text-decoration:none;white-space:nowrap;}
.btn-guides:hover{background:var(--blue-dark);color:#fff;}

/* ── Search dropdown ── */
.kb-search-dropdown{position:relative;flex:1;max-width:280px;margin-left:auto;}
.kb-search-dropdown input{width:100%;padding:0.5rem 1rem;border:1px solid var(--card-border);border-radius:100px;font-size:0.86rem;outline:none;font-family:'Inter',sans-serif;background:var(--body-bg);}
.kb-search-dropdown input:focus{border-color:var(--blue);background:#fff;}
.kb-search-dropdown-list{position:absolute;left:0;right:0;top:calc(100% + 6px);background:#fff;border-radius:10px;box-shadow:var(--shadow-md);z-index:200;max-height:280px;overflow-y:auto;display:none;border:1px solid var(--card-border);}
.kb-search-dropdown-list.active{display:block;}
.kb-search-dropdown-list a{display:block;padding:0.65rem 1rem;color:var(--text);text-decoration:none;border-bottom:1px solid var(--card-border);font-size:0.86rem;line-height:1.4;}
.kb-search-dropdown-list a:last-child{border-bottom:none;}
.kb-search-dropdown-list a:hover,.kb-search-dropdown-list a.selected{background:rgba(73,136,255,0.07);color:var(--blue);}

/* ── Article content ── */
.kb-article-toc{background:var(--body-bg);border:1px solid var(--card-border);border-radius:10px;padding:1.1rem 1.4rem;margin-bottom:2rem;}
.kb-article-toc strong{font-size:0.72rem;text-transform:uppercase;letter-spacing:0.09em;color:var(--text-2);display:block;margin-bottom:0.65rem;}
.kb-article-toc ol{padding-left:1.1rem;margin:0;}
.kb-article-toc li{margin-bottom:0.35rem;}
.kb-article-toc a{color:var(--blue);text-decoration:none;font-size:0.88rem;}
.kb-article-toc a:hover{text-decoration:underline;}
.kb-article-content h2{font-size:1.15rem;font-weight:800;color:var(--text);margin-top:2rem;margin-bottom:0.55rem;padding-bottom:0.4rem;border-bottom:1px solid var(--card-border);}
.kb-article-content h3{font-size:0.97rem;font-weight:700;color:var(--text);margin-top:1.35rem;margin-bottom:0.45rem;}
.kb-article-content h2:first-child{margin-top:0;}
.kb-article-content p{color:var(--text-2);line-height:1.8;margin-bottom:0.85rem;font-size:0.92rem;}
.kb-article-content ul,.kb-article-content ol{color:var(--text-2);padding-left:1.4em;margin-bottom:0.85rem;}
.kb-article-content li{margin-bottom:0.45em;line-height:1.7;font-size:0.92rem;}
.kb-article-content a{color:var(--blue);}
.kb-article-content strong{color:var(--text);font-weight:600;}
.kb-article-content blockquote{border-left:4px solid var(--blue);background:rgba(73,136,255,0.06);padding:0.9em 1.4em;margin:1.25em 0;color:var(--text-2);border-radius:0 8px 8px 0;font-size:0.92rem;}
.kb-article-content code{font-family:'SF Mono','Fira Code',monospace;font-size:0.88em;background:rgba(73,136,255,0.08);padding:0.1em 0.4em;border-radius:4px;color:var(--blue-dark);}

/* ── Callouts ── */
.callout{border-radius:8px;padding:0.9em 1.2em;margin:1.1em 0;border-left:4px solid var(--blue);background:rgba(73,136,255,0.07);font-size:0.9rem;line-height:1.7;color:var(--text-2);}
.callout.tip{background:rgba(73,136,255,0.07);border-color:var(--blue);}
.callout.warning{background:rgba(255,165,0,0.09);border-color:#ff9500;color:#6b4000;}
.callout.success{background:rgba(0,200,150,0.08);border-color:var(--green);color:#065740;}
.callout.danger{background:rgba(220,50,50,0.08);border-color:#dc3232;color:#7c1a1a;}
.callout strong{font-weight:700;}

/* ── Numbered steps ── */
.steps{margin:1.1em 0;}
.step{display:flex;gap:1rem;margin-bottom:1.2rem;align-items:flex-start;}
.step-num{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:var(--blue);color:#fff;font-size:0.8rem;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:0.1rem;}
.step-body{flex:1;}
.step-body strong{display:block;font-size:0.93rem;font-weight:700;color:var(--text);margin-bottom:0.25rem;}
.step-body p{margin:0;font-size:0.9rem;color:var(--text-2);line-height:1.65;}

/* ── Related articles ── */
.related-section{margin-top:2.5rem;padding-top:1.75rem;border-top:1px solid var(--card-border);}
.related-label{font-size:0.72rem;font-weight:700;letter-spacing:0.09em;text-transform:uppercase;color:var(--text-2);margin-bottom:1rem;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;}
@media(max-width:768px){.related-grid{grid-template-columns:1fr;}}
.related-card{background:var(--body-bg);border:1px solid var(--card-border);border-radius:var(--radius);padding:1.1rem;text-decoration:none;color:var(--text);display:block;transition:box-shadow 0.18s,transform 0.15s;}
.related-card:hover{box-shadow:var(--shadow-sm);transform:translateY(-2px);}
.related-title{font-size:0.9rem;font-weight:700;color:var(--blue);margin-bottom:0.35rem;}
.related-desc{font-size:0.83rem;color:var(--text-2);margin-bottom:0.5rem;line-height:1.5;}
.related-link{font-size:0.78rem;font-weight:600;color:var(--blue);}

/* ── Search results ── */
.search-result-card{display:block;background:var(--card-bg);border:1px solid var(--card-border);border-left:4px solid var(--blue);border-radius:var(--radius);padding:1.1rem 1.4rem;margin-bottom:0.7rem;text-decoration:none;color:var(--text);transition:box-shadow 0.18s,transform 0.15s;}
.search-result-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);}
.search-result-title{font-size:0.97rem;font-weight:700;color:var(--blue);margin-bottom:0.2rem;}
.search-result-meta{color:var(--text-2);font-size:0.78rem;margin-bottom:0.35rem;}
.search-result-snippet{color:var(--text-2);font-size:0.88rem;line-height:1.55;}
.search-query-box{background:rgba(73,136,255,0.07);border:1px solid rgba(73,136,255,0.18);border-radius:10px;padding:0.85rem 1.2rem;margin-bottom:1.5rem;font-size:0.9rem;color:var(--text-2);}
.no-results-box{background:rgba(255,165,0,0.09);border:1px solid #ffaa00;border-radius:10px;padding:1.5rem;text-align:center;color:#6b4000;margin-bottom:1.5rem;font-size:0.93rem;}

/* ── Responsive ── */
@media(max-width:600px){
  .kb-nav-bar-inner{flex-wrap:wrap;}
  .kb-search-dropdown{max-width:100%;margin-left:0;width:100%;}
}