/* html-compiler.com - OneCompiler style Side-by-Side Large Equal Width */
:root{
  --bg:#f1f5f9;
  --header:#0b1220;
  --header2:#111827;
  --card:#ffffff;
  --border:#e2e8f0;
  --primary:#2563eb;
  --primary-hover:#1d4ed8;
  --run:#16a34a;
  --run-hover:#15803d;
  --text:#0f172a;
  --muted:#64748b;
  --radius:10px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial;background:var(--bg);color:var(--text);line-height:1.6}
a{color:var(--primary);text-decoration:none}
.container{max-width:1440px;margin:0 auto;padding:0 16px}
.topbar{background:var(--header);color:#fff;border-bottom:1px solid #1e293b;position:sticky;top:0;z-index:20}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 0}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:-0.02em}
.logo span{color:#38bdf8}
.logo-badge{font-size:10px;background:#2563eb;color:#fff;padding:3px 7px;border-radius:999px}
.nav{display:flex;gap:16px;font-size:13px;align-items:center;flex-wrap:wrap}
.nav a{color:#cbd5e1}
.dropdown{position:relative;display:inline-block;flex-shrink:0}
.dropbtn{cursor:pointer;color:#cbd5e1;display:inline-flex;align-items:center;gap:4px;padding:6px 10px;border:1px solid transparent;border-radius:8px;user-select:none}
.dropbtn:hover{background:#1e293b;color:#fff}
.dropdown-content{display:none !important;position:absolute;top:100%;right:0;background:#0f172a;border:1px solid #1e293b;border-radius:10px;min-width:220px;box-shadow:0 12px 30px rgba(0,0,0,0.4);z-index:999;flex-direction:column;margin-top:8px;overflow:visible}
.dropdown::after{content:'';position:absolute;top:100%;left:0;right:0;height:12px;display:none}
.dropdown:hover::after{display:block}
.dropdown-content a{display:block !important;width:100%;padding:10px 14px;font-size:13px;color:#cbd5e1;border-bottom:1px solid #1e293b;text-align:left;white-space:nowrap}
.dropdown-content a:last-child{border-bottom:none}
.dropdown-content a:hover{background:#1e293b;color:#fff}
.dropdown:hover .dropdown-content{display:flex !important;flex-direction:column}
.dropdown:hover .dropbtn{background:#1e293b;color:#fff}
@media(max-width:900px){
  .dropdown-content{position:fixed;top:auto;left:10px;right:10px;min-width:auto;max-height:70vh;overflow-y:auto}
  .submenu{position:static;display:none !important;left:auto;top:auto;border:none;box-shadow:none;border-radius:0;background:#111d33;margin-left:12px}
  .category:hover .submenu{display:flex !important}
}
.hero{padding:18px 0 12px;text-align:center;background:#fff;border-bottom:1px solid var(--border)}
.hero h1{font-size:28px;letter-spacing:-0.03em;line-height:1.1}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero p{max-width:760px;margin:8px auto 0;color:var(--muted);font-size:14px}
.badges{margin-top:10px;display:flex;gap:6px;justify-content:center;flex-wrap:wrap}
.badge{font-size:11px;background:#f8fafc;border:1px solid var(--border);padding:5px 9px;border-radius:999px;color:var(--muted)}

/* TOOL - OneCompiler side by side */
.tool-wrap{margin:14px auto;background:var(--card);border:1px solid var(--border);border-radius:12px;overflow:hidden;box-shadow:0 6px 24px rgba(0,0,0,0.06);max-width:1440px}
.toolbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between;padding:8px 10px;background:#ffffff;border-bottom:1px solid var(--border)}
.toolbar-left,.toolbar-right{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.btn{appearance:none;border:1px solid var(--border);background:#fff;padding:7px 12px;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:6px}
.btn:hover{border-color:#cbd5e1}
.btn-run{background:var(--run);color:#fff;border-color:var(--run);padding:8px 18px;font-weight:800}
.btn-run:hover{background:var(--run-hover)}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-hover)}
.select,input[type="text"]{border:1px solid var(--border);background:#fff;padding:7px 10px;border-radius:8px;font-size:13px}
.input-url{width:260px}

/* MAIN SPLIT - EQUAL WIDTH LIKE ONECOMPILER */
.main-split{display:flex;height:78vh;min-height:700px;border-top:1px solid var(--border)}
.pane{flex:1 1 50%;display:flex;flex-direction:column;min-width:0;border-right:1px solid var(--border);background:#fff}
.pane:last-child{border-right:none}
.pane-head{height:42px;display:flex;align-items:center;justify-content:space-between;padding:0 10px;background:#f8fafc;border-bottom:1px solid var(--border);font-size:12px;font-weight:800;letter-spacing:0.04em;color:var(--muted);text-transform:uppercase}
.tabs{display:flex;align-items:center;gap:0;background:#f1f5f9;border-bottom:1px solid var(--border);padding:0}
.tab{padding:10px 16px;font-size:13px;font-weight:700;border-right:1px solid var(--border);cursor:pointer;color:#475569;background:#f1f5f9;display:flex;align-items:center;gap:6px;user-select:none}
.tab.active{background:#fff;color:var(--primary);border-bottom:2px solid var(--primary);margin-bottom:-1px}
.tab:hover{background:#fff}
.editor-wrap{flex:1;position:relative;overflow:hidden}
.CodeMirror{height:100%!important;font-size:14px;line-height:1.6;position:absolute;inset:0}
.CodeMirror-hidden{display:none}
.preview-iframe{width:100%;height:100%;border:0;background:#fff;flex:1}
.console{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:11px;background:#0f172a;color:#e2e8f0;padding:10px;overflow:auto;max-height:180px;min-height:120px;border-top:1px solid var(--border)}
.console-line{padding:2px 0;border-bottom:1px solid rgba(255,255,255,0.06)}
.statusbar{padding:7px 12px;font-size:11px;color:var(--muted);display:flex;justify-content:space-between;align-items:center;background:#fbfbff;border-top:1px solid var(--border)}

/* content */
.content{max-width:860px;margin:24px auto;padding:0 20px}
.content h2{font-size:28px;margin:28px 0 12px;letter-spacing:-0.02em}
.content h3{font-size:20px;margin:18px 0 10px}
.content p{margin:12px 0;color:#1e293b;font-size:17px;line-height:1.75}
.table{width:100%;border-collapse:collapse;margin:16px 0;font-size:15px;background:#fff;border:1px solid var(--border);border-radius:10px;overflow:hidden}
.table th{background:#f8fafc;text-align:left;padding:9px 10px;border-bottom:1px solid var(--border)}
.table td{padding:9px 10px;border-bottom:1px solid #f1f5f9}
.kbd{font-family:ui-monospace,monospace;background:#fff;border:1px solid var(--border);border-bottom-width:2px;padding:1px 5px;border-radius:5px;font-size:11px}
.alert{background:#eef2ff;border:1px solid #c7d2fe;padding:10px 12px;border-radius:10px;margin:14px 0;font-size:13px}
.faq details{background:#fff;border:1px solid var(--border);border-radius:10px;padding:10px 12px;margin:8px 0}
.faq summary{font-weight:700;cursor:pointer}
.footer{margin-top:30px;padding:20px 0;border-top:1px solid var(--border);color:var(--muted);font-size:12px;text-align:center;background:#fff}

@media(max-width:900px){
  .main-split{flex-direction:column;height:auto}
  .pane{flex:none;height:420px}
  .input-url{width:150px}
  .hero h1{font-size:22px}
}