:root{
  --bg:#ffffff;
  --bg-soft:#f7f8fa;
  --text:#0b1220;
  --muted:#778;
  --border:#e6e8ee;
  --shadow:0 6px 24px rgba(2,9,27,.06),0 1px 2px rgba(3,10,26,.06);
  --radius:14px;
  --radius-sm:10px;
  --brand:#111827;
  --accent:#2563eb;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
}
.app{display:flex;min-height:100vh}

/* Sidebar */
.sidebar{
  width:280px;
  background:var(--bg-soft);
  border-right:1px solid var(--border);
  position:sticky;top:0;height:100vh;
  padding:22px 16px;display:flex;flex-direction:column;gap:14px
}
.sidebar-top{display:flex;align-items:center;gap:10px}
.sidebar-toggle{display:none;border:1px solid var(--border);background:#fff;border-radius:10px;padding:8px 10px;cursor:pointer}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;text-decoration:none;color:var(--brand);font-size:18px}
.brand-text{font-family:'DM Sans',Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:30px;line-height:.95;letter-spacing:-.045em;display:inline-flex;align-items:baseline}
.brand-text-main{font-weight:700;color:#111827}
.brand-text-accent{font-weight:400;background:linear-gradient(90deg,#4ECDC4,#7C3AED);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;color:transparent}
.brand-mark{display:inline-block;width:56px;height:56px;flex:0 0 56px}
.themes{display:flex;flex-direction:column;gap:10px;overflow:auto;padding-right:6px}
.theme-btn{
  display:flex;align-items:center;gap:10px;
  padding:8px 7px;border-radius:10px;border:1px solid transparent;
  background:#fff;box-shadow:var(--shadow);cursor:pointer;
  font-size:13px;color:var(--text);transition:transform .14s ease, border .14s, box-shadow .14s
}
.theme-btn:hover{transform:translateY(-2px);border-color:var(--border);box-shadow:0 10px 28px rgba(3,10,26,.08),0 2px 4px rgba(3,10,26,.06)}
.theme-btn.active{border-color:var(--accent);background:linear-gradient(180deg,#fff, #fafbff)}
.sidebar-footer{margin-top:auto;color:var(--muted);font-size:12px;padding:6px 8px}

/* Main */
.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{
  position:sticky;top:0;z-index:5;display:grid;grid-template-columns:360px 1fr;align-items:center;
  gap:16px;padding:18px 22px;background:rgba(255,255,255,.9);backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--border)
}
.search{display:flex;align-items:center;gap:10px;border:1px solid var(--border);background:#fff;border-radius:14px;padding:10px 14px;min-width:0;max-width:none;width:100%}
.search input{border:none;outline:none;flex:1;font-size:14px;background:transparent;color:var(--text)}
.topbar-spacer{width:100%;height:42px}
.top-nav{display:flex;align-items:center;gap:12px;justify-self:stretch;width:100%}
.nav-item{display:inline-flex;align-items:center;gap:8px;padding:10px 12px;border-radius:12px;border:1px solid var(--border);text-decoration:none;color:var(--text);background:#fff}
.nav-item.active,.nav-item:hover{border-color:var(--accent)}
.top-link-group{display:flex;align-items:center;gap:12px;margin-left:auto}
.top-link{display:inline-flex;align-items:center;gap:6px;padding:4px 2px;background:transparent;border:none;text-decoration:none;color:#64748b;font-size:13px;font-weight:600}
.top-link i{font-size:12px}
.top-link:hover,.top-link.active{color:#0f172a}
.lang-toggle{display:inline-flex;align-items:center;gap:6px;padding:0 2px;background:transparent;border:none;color:#475569;cursor:pointer;font-size:13px}
.lang-list{position:absolute;right:0;top:calc(100% + 8px);display:flex;flex-direction:column;min-width:132px;padding:6px;background:#fff;border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow);z-index:8}
.lang-list[hidden]{display:none}
.lang-option{border:none;background:transparent;text-align:left;padding:6px 8px;border-radius:8px;cursor:pointer;color:var(--text);font-size:13px}
.lang-option:hover{background:#f8fafc}
.quick-options{display:flex;flex-direction:column;gap:6px}
.quick-btn{justify-content:flex-start;padding:12px 10px;min-height:44px}
.quick-options .quick-btn i{width:18px;text-align:center}
.quick-options .quick-btn:nth-child(1){background:linear-gradient(180deg,rgba(14,165,233,.12),rgba(255,255,255,.96));border-color:rgba(14,165,233,.25)}
.quick-options .quick-btn:nth-child(1) i{color:#0284c7}
.quick-options .quick-btn:nth-child(2){background:linear-gradient(180deg,rgba(168,85,247,.12),rgba(255,255,255,.96));border-color:rgba(168,85,247,.26)}
.quick-options .quick-btn:nth-child(2) i{color:#7e22ce}
.quick-options .quick-btn:nth-child(3){background:linear-gradient(180deg,rgba(245,158,11,.14),rgba(255,255,255,.96));border-color:rgba(245,158,11,.28)}
.quick-options .quick-btn:nth-child(3) i{color:#b45309}
.quick-options .quick-btn.active:nth-child(1){border-color:#0284c7;box-shadow:0 10px 22px rgba(2,132,199,.16)}
.quick-options .quick-btn.active:nth-child(2){border-color:#7e22ce;box-shadow:0 10px 22px rgba(126,34,206,.16)}
.quick-options .quick-btn.active:nth-child(3){border-color:#b45309;box-shadow:0 10px 22px rgba(180,83,9,.16)}
.top-nav .nav-item i{width:18px;text-align:center}
.top-nav #navPalettes{background:linear-gradient(180deg,rgba(37,99,235,.11),rgba(255,255,255,.96));border-color:rgba(37,99,235,.25)}
.top-nav #navPalettes i{color:#1d4ed8}
.top-nav #navImage{background:linear-gradient(180deg,rgba(14,165,233,.11),rgba(255,255,255,.96));border-color:rgba(14,165,233,.25)}
.top-nav #navImage i{color:#0284c7}
.top-nav #navBlog{background:linear-gradient(180deg,rgba(16,185,129,.11),rgba(255,255,255,.96));border-color:rgba(16,185,129,.25)}
.top-nav #navBlog i{color:#059669}
.top-nav #navGenerator{background:linear-gradient(180deg,rgba(168,85,247,.11),rgba(255,255,255,.96));border-color:rgba(168,85,247,.25)}
.top-nav #navGenerator i{color:#7e22ce}
.top-nav #navPalettes.active,.top-nav #navPalettes:hover{border-color:#1d4ed8;box-shadow:0 10px 22px rgba(29,78,216,.14)}
.top-nav #navImage.active,.top-nav #navImage:hover{border-color:#0284c7;box-shadow:0 10px 22px rgba(2,132,199,.14)}
.top-nav #navBlog.active,.top-nav #navBlog:hover{border-color:#059669;box-shadow:0 10px 22px rgba(5,150,105,.14)}
.top-nav #navGenerator.active,.top-nav #navGenerator:hover{border-color:#7e22ce;box-shadow:0 10px 22px rgba(126,34,206,.14)}
.library-title{font-size:12px;color:var(--muted);font-weight:600;letter-spacing:.03em;margin-top:2px}
.compact-reading .sidebar{position:fixed;left:0;top:0;transform:translateX(-100%);transition:transform .18s;box-shadow:var(--shadow);z-index:20;height:100vh}
.compact-reading .sidebar.open{transform:translateX(0)}
.compact-reading .sidebar-toggle{display:inline-flex}

/* Grid */
.content-layout{display:flex;align-items:flex-start;gap:16px;padding:12px 16px 16px}
.grid{padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px;flex:1}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;transition:transform .16s ease, box-shadow .16s}
.card:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(2,9,27,.08),0 3px 6px rgba(2,9,27,.06)}
.swatches{display:grid;height:118px}
.swatch{min-width:0;position:relative;display:flex;align-items:flex-end;justify-content:flex-end;padding:8px;transition:transform .12s ease}
.swatch:hover{transform:scale(1.02)}
.card-foot{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-top:1px solid var(--border);gap:6px}
.card-meta{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:12px}
.actions{display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:flex-end}
.btn{border:1px solid var(--border);background:#fff;border-radius:10px;padding:6px 10px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;font-size:13px}
.btn:hover{border-color:var(--accent)}
.btn-like{padding:6px 8px}
.btn-like.active{border-color:#ef4444;color:#ef4444}

/* Toast */
.toast{position:fixed;bottom:16px;left:50%;transform:translateX(-50%);background:#111827;color:#fff;border-radius:10px;padding:10px 12px;opacity:0;pointer-events:none;transition:opacity .18s, transform .18s;border:1px solid rgba(0,0,0,.1)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(-6px)}

/* Image Palette Tool */
.image-tool{padding:22px;display:flex;flex-direction:column;gap:18px}
.dropzone{border:1px dashed var(--border);border-radius:var(--radius);background:var(--bg-soft);padding:26px;display:flex;align-items:center;justify-content:center;text-align:center;color:var(--muted);cursor:pointer}
.dz-inner i{font-size:28px;color:var(--accent);margin-bottom:6px}
.dz-inner p{margin:6px 0;color:var(--text)}
.image-preview img{max-width:100%;border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow)}
.generator-tool{padding:16px;display:flex;flex-direction:column;gap:14px;max-width:920px;margin:0 auto;width:100%}
.generator-controls{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end}
.control-block{display:flex;flex-direction:column;gap:6px;min-width:140px}
.control-block label{font-size:12px;color:var(--muted);font-weight:600}
.control-block input,.control-block select{height:40px;border:1px solid var(--border);border-radius:10px;padding:0 10px;background:#fff;color:var(--text);font-size:14px}
.control-block input[type="color"]{padding:4px;min-width:76px}
.generator-wheel-card{padding:16px}
.wheel-wrap{display:flex;align-items:center;justify-content:center}
#colorWheel{width:min(360px,100%);height:auto;touch-action:none;border-radius:50%;box-shadow:var(--shadow);background:#fff;cursor:crosshair}
.generator-card{padding:0;overflow:hidden}
.generator-card .swatches{height:160px}
.generator-hex-list{display:flex;flex-wrap:wrap;gap:8px;padding:12px;border-top:1px solid var(--border)}
.generator-hex-list button{border:1px solid var(--border);background:#fff;border-radius:999px;padding:5px 10px;font-size:12px;cursor:pointer}
.generator-hex-list button:hover{border-color:var(--accent)}

/* Ads */
.ad-slot{display:flex;align-items:center;justify-content:center;border:1px dashed var(--border);border-radius:12px;background:var(--bg-soft);color:#94a3b8}
.ad-top{min-height:96px;margin:0 22px 10px 22px}
.ad-rail{min-height:280px}
.ad-inline{min-height:90px}
.ad-card{display:flex;align-items:center;justify-content:center;height:120px;font-size:14px;background:var(--bg-soft);border:1px dashed var(--border);border-radius:var(--radius)}
.right-rail{width:236px;min-width:236px;display:flex;flex-direction:column;gap:10px;position:sticky;top:88px;align-self:flex-start;height:calc(100vh - 108px)}
.likes-space{background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);padding:10px;display:flex;flex-direction:column;gap:8px;flex:1;min-height:220px}
.likes-title{margin:0;font-size:13px}
.liked-palettes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;align-content:start;overflow:auto}
.liked-thumb{border:1px solid var(--border);border-radius:10px;overflow:hidden;background:#fff;cursor:pointer}
.liked-thumb-row{display:flex;height:40px}
.liked-thumb-row span{flex:1}
.liked-thumb-name{padding:6px;font-size:11px;color:#334155;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;border-top:1px solid var(--border)}
.liked-empty{font-size:12px;color:var(--muted)}
@media (max-width: 960px){
  .ad-rail{display:none}
  .ad-inline{display:none}
  .content-layout{padding:0}
  .right-rail{display:none}
  .grid{padding:22px}
  .topbar{display:flex;justify-content:space-between}
  .topbar-spacer{display:none}
  .generator-controls .btn{flex:1 1 calc(50% - 10px)}
  .control-block{min-width:calc(50% - 10px)}
}

/* Blog */
.blog-grid{padding:22px;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.blog-card-link{display:block;text-decoration:none;color:inherit}
.blog-card{cursor:pointer}
.blog-card .blog-cover{position:relative;height:180px;background:linear-gradient(90deg,#93c5fd,#a7f3d0);overflow:hidden;border-bottom:1px solid var(--border)}
.blog-card .blog-cover img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .25s ease}
.blog-card:hover .blog-cover img{transform:scale(1.04)}
.blog-card .blog-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg, rgba(17,24,39,.25), rgba(255,255,255,0));mix-blend-mode:multiply;pointer-events:none}
.blog-body{padding:12px}
.blog-title{margin:0 0 6px 0;font-size:18px}
.blog-meta{font-size:12px;color:var(--muted);margin-bottom:6px}
.blog-summary{margin:6px 0 10px 0;color:#334155;font-size:14px}
.blog-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:6px}
.tag{font-size:12px;padding:3px 8px;border:1px solid var(--border);border-radius:999px;background:#fff}

/* Article */
.article{padding:24px;max-width:880px;margin:0 auto}
.article-head{padding:6px 2px 10px 2px;border-bottom:1px solid var(--border);margin-bottom:12px}
.article-title{margin:0;font-size:28px;line-height:1.2}
.article-meta{color:var(--muted);font-size:13px;margin-top:6px}
.article-body{font-size:16px;line-height:1.75;color:#1f2937}
.article-body figure{margin:14px 0;display:flex;flex-direction:column;align-items:center}
.article-body img{width:100%;max-width:640px;max-height:420px;object-fit:cover;border-radius:12px;border:1px solid var(--border);box-shadow:var(--shadow)}
.article-body figcaption{font-size:12px;color:var(--muted);margin-top:6px}
.article-body h2{margin-top:22px;margin-bottom:10px;font-size:20px}
.article-body h3{margin-top:18px;margin-bottom:8px;font-size:18px}
.article-body p{margin:10px 0}
.article-body ul{margin:8px 0 12px 18px}
.article-body ol{margin:8px 0 12px 20px}
.article-table{width:100%;border-collapse:collapse;margin:12px 0;font-size:14px}
.article-table th,.article-table td{border:1px solid var(--border);padding:8px 10px;text-align:left;vertical-align:top}
.article-table thead th{background:#f8fafc}
.palette-inline{display:flex;gap:10px;margin:12px 0}
.palette-inline .sw{flex:1;min-width:120px;height:84px;border-radius:12px;border:1px solid var(--border);display:flex;align-items:flex-end;justify-content:flex-end;padding:6px;background:#fff;cursor:pointer;transition:transform .12s ease}
.palette-inline .sw:hover{transform:translateY(-2px)}
.palette-inline .sw span{font-size:12px;background:rgba(255,255,255,.9);border:1px solid var(--border);border-radius:8px;padding:3px 6px}

/* Lightbox */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.72);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:opacity .18s, visibility .18s;z-index:50}
.lightbox.open{opacity:1;visibility:visible}
.lightbox img{max-width:92vw;max-height:88vh;border-radius:12px;border:1px solid var(--border);box-shadow:var(--shadow)}
.lightbox-close{position:absolute;top:16px;right:16px;background:#fff;border:1px solid var(--border);border-radius:10px;padding:6px 10px;cursor:pointer}

/* Responsive */
@media (max-width: 960px){
  .sidebar{position:fixed;left:0;transform:translateX(-100%);transition:transform .18s;box-shadow:var(--shadow);height:100vh}
  .sidebar.open{transform:translateX(0)}
  .sidebar-toggle{display:inline-flex}
  .main{margin-left:0}
}
@media (max-width: 640px){
  .swatches{height:100px}
  .grid{grid-template-columns:repeat(auto-fill,minmax(170px,1fr))}
  .top-nav{display:none}
}