:root{
  --bg:#0b1020;
  --bg2:#0f172a;
  --card:#121a30;
  --text:#e9eefc;
  --muted:#94a3b8;
  --brand:#60a5fa;
  --line:rgba(255,255,255,.08);
}

:root[data-theme='light']{
  --bg:#f7fafc;
  --bg2:#eef2f7;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#475569;
  --brand:#2563eb;
  --line:rgba(15,23,42,.12);
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,sans-serif;
  background:linear-gradient(180deg,var(--bg) 0%,var(--bg2) 100%);
  color:var(--text);
  line-height:1.7;
}
.wrap{max-width:860px;margin:0 auto;padding:32px 20px 60px}
.nav{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  margin-bottom:28px;
  min-height:56px;
  position:sticky;
  top:10px;
  z-index:1000;
  background:rgba(11,16,32,.75);
  backdrop-filter:blur(8px);
  border:1px solid var(--line);
  border-radius:14px;
  padding:10px 12px;
}
:root[data-theme='light'] .nav{background:rgba(247,250,252,.82)}
.logo{font-weight:700;font-size:20px;color:var(--text);text-decoration:none;white-space:nowrap}
.logo span{color:var(--brand)}
.menu{display:flex;align-items:center;gap:12px;min-height:34px}
.menu a{
  color:var(--muted);
  text-decoration:none;
  white-space:nowrap;
  margin-left:0;
  display:inline-flex;
  align-items:center;
  height:34px;
}
.menu-with-search{display:flex;align-items:center;gap:12px}
.menu-with-search a{margin-left:0}
.appearance-btn{
  width:34px;
  height:34px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--card);
  color:var(--text);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  padding:0;
}
.appearance-btn:hover{border-color:var(--brand);color:var(--brand)}
.appearance-btn svg{width:18px;height:18px;display:block}
.hero{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:18px;padding:28px;margin-bottom:24px}
.hero h1{margin:0 0 10px;font-size:30px}
.hero p{margin:0;color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;margin-bottom:14px}
.card h2{margin:0 0 6px;font-size:22px}
.meta{font-size:14px;color:var(--muted);margin-bottom:10px}
.author-line{font-size:14px;color:var(--muted);margin:-4px 0 12px}
.post-image{width:100%;height:auto;border-radius:12px;border:1px solid var(--line);margin:12px 0}
a{color:var(--brand)}
footer{margin-top:26px;color:var(--muted);font-size:14px}
.article h1{font-size:34px;margin-bottom:8px}
.article p{margin:0 0 14px}
.tag{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:2px 10px;font-size:12px;color:var(--muted);margin-right:8px}
.comments h2{margin:0 0 8px}
.comments .meta{margin-bottom:14px}

.controls{
  display:flex;
  justify-content:flex-end;
  gap:10px;
  align-items:center;
  margin-bottom:14px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  border-radius:14px;
  padding:12px;
}
.search-input,.size-input,.size-select{
  width:100%;
  background:var(--card);
  color:var(--text);
  border:1px solid var(--line);
  border-radius:10px;
  padding:10px 12px;
  outline:none;
}
.search-input:focus,.size-input:focus,.size-select:focus{border-color:var(--brand)}
.search-google{
  width:280px;
  height:34px;
  background:#fff;
  color:#111827;
  border:1px solid #dfe1e5;
  border-radius:999px;
  box-shadow:0 1px 6px rgba(32,33,36,.18);
}
.search-google::placeholder{color:#6b7280}
.search-google:focus{border-color:#dfe1e5;box-shadow:0 1px 8px rgba(32,33,36,.28)}
.size-wrap{display:flex;gap:8px;align-items:center;flex-wrap:nowrap}
.size-select{
  min-width:100px;
  width:auto;
  flex:0 0 auto;
  padding-right:30px;
}
.size-input{
  min-width:100px;
  width:auto;
  flex:0 0 auto;
}
.btn{
  background:var(--card);
  color:var(--text);
  border:1px solid var(--line);
  border-radius:10px;
  padding:10px 12px;
  cursor:pointer;
}
.btn:hover{border-color:var(--brand);color:var(--brand)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.pagination{
  display:flex;
  justify-content:flex-end;
  align-items:center;
  gap:10px;
  margin-top:10px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  border-radius:14px;
  padding:12px;
}
.page-info{color:var(--muted);font-size:14px}
@media (max-width:900px){
  .nav{align-items:flex-start;flex-direction:column}
  .menu-with-search{width:100%;flex-wrap:wrap;justify-content:flex-start}
  .search-google{width:min(100%,320px)}
}
/* Code block styling */
.code-tabs{margin:14px 0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#0a1224}
.tab-list{display:flex;flex-wrap:wrap;gap:0;background:#101a30;border-bottom:1px solid var(--line)}
.tab-btn{border:none;background:transparent;color:var(--muted);padding:8px 12px;cursor:pointer;border-right:1px solid var(--line)}
.tab-btn.active{color:var(--text);background:#0f1a33}
.tab-pane{display:none;position:relative}
.tab-pane.active{display:block}
.code-block{position:relative;margin:14px 0}
.code-block pre,.tab-pane pre{
  margin:0;
  padding:16px;
  border:none;
  border-radius:0;
  background:#0a1224;
  overflow:auto;
}
.code-block code,.tab-pane code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
  font-size:13px;
  line-height:1.6;
  color:#dbeafe;
}
.copy-btn{
  position:absolute;
  top:10px;
  right:10px;
  border:1px solid var(--line);
  background:#111b33;
  color:var(--text);
  border-radius:8px;
  padding:6px 10px;
  font-size:12px;
  cursor:pointer;
}
.copy-btn:hover{border-color:var(--brand);color:var(--brand)}

:root[data-theme='light'] .code-tabs{background:#f8fafc}
:root[data-theme='light'] .tab-list{background:#eef2f7}
:root[data-theme='light'] .tab-btn{color:#475569}
:root[data-theme='light'] .tab-btn.active{color:#0f172a;background:#e2e8f0}
:root[data-theme='light'] .code-block pre,
:root[data-theme='light'] .tab-pane pre{background:#f8fafc}
:root[data-theme='light'] .code-block code,
:root[data-theme='light'] .tab-pane code{color:#0f172a}
:root[data-theme='light'] .copy-btn{background:#ffffff;color:#0f172a}

.note-form{display:grid;gap:10px}
.note-textarea{min-height:140px;resize:vertical}
.note-controls{justify-content:space-between}
.note-card{margin-bottom:12px}
.note-content{white-space:normal;word-break:break-word}
.note-preview{margin:0}
.note-details{margin-top:8px}
.note-details summary{cursor:pointer;color:var(--brand)}
.note-details summary:hover{text-decoration:underline}

@media (max-width:700px){
  .wrap{padding:20px 14px 40px}
  .hero{padding:20px}
  .hero h1{font-size:24px}
  .card{padding:16px}
  .card h2{font-size:19px}
  .article h1{font-size:28px}
  .controls{justify-content:stretch}
  .size-wrap{width:100%;display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .size-select,.size-input{width:100%;min-width:0}
  .pagination{display:grid;grid-template-columns:1fr auto 1fr;align-items:center}
  .pagination .btn{width:100%;min-width:0}
  .page-info{text-align:center;white-space:nowrap;font-size:12px}
  .search-google{width:100%}
  .code-block pre{padding:14px}
  .note-controls{flex-direction:column;align-items:stretch}
}