:root{--bg-base:#080a0f;--bg-sidebar:#0b0e16;--bg-header:#0b0e16cc;--bg-card:#101420;--bg-card-hover:#151a2a;--bg-input:#121624;--bg-muted:#171d2e;--border-subtle:#ffffff12;--border-medium:#ffffff21;--border-focus:#3b82f6;--border-hover:#ffffff38;--text-main:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--text-dim:#475569;--accent-primary:#3b82f6;--accent-primary-hover:#2563eb;--accent-primary-glow:#3b82f62e;--accent-emerald:#10b981;--accent-cyan:#06b6d4;--accent-amber:#f59e0b;--accent-purple:#8b5cf6;--radius-xs:4px;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius-xl:18px;--radius-full:9999px;--shadow-card:inset 0 1px 0 #ffffff0f, 0 8px 24px -6px #0009;--shadow-glow:0 0 24px #3b82f629;--font-display:"Outfit", "Plus Jakarta Sans", system-ui, sans-serif;--font-sans:"Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono:"JetBrains Mono", ui-monospace, SFMono-Regular, monospace;--sidebar-width:250px;--header-height:64px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-base);color:var(--text-main);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-image:radial-gradient(70% 50% at 50% -10%,#3b82f612,#0000 60%),radial-gradient(circle at 100% 10%,#06b6d40a,#0000 40%);background-attachment:fixed;line-height:1.5}.tabular,th,td,.badge-pill,.stat-val{font-variant-numeric:tabular-nums}button,input,select,textarea{font-family:inherit}a{color:inherit;text-decoration:none}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{border-radius:var(--radius-full);background:#ffffff1f}::-webkit-scrollbar-thumb:hover{background:#ffffff38}.client-app-shell{min-height:100vh;display:flex}.client-sidebar{width:var(--sidebar-width);background:var(--bg-sidebar);border-right:1px solid var(--border-subtle);z-index:30;flex-direction:column;display:flex;position:fixed;top:0;bottom:0;left:0;box-shadow:10px 0 30px #0000004d}.client-content-area{margin-left:var(--sidebar-width);flex-direction:column;flex:1;min-width:0;min-height:100vh;display:flex}.client-header{height:var(--header-height);background:var(--bg-header);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-subtle);z-index:20;justify-content:space-between;align-items:center;padding:0 32px;display:flex;position:sticky;top:0}.client-main{flex:1;width:100%;max-width:1540px;margin:0 auto;padding:32px}.card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);position:relative;overflow:hidden}.card-header{border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.card-title{font-family:var(--font-display);letter-spacing:-.2px;color:var(--text-main);font-size:14.5px;font-weight:600}.card-body{padding:20px}.form-group{flex-direction:column;gap:6px;display:flex}.form-label{color:var(--text-secondary);font-size:12.5px;font-weight:600}.form-input{background:var(--bg-input);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);width:100%;color:var(--text-main);outline:none;padding:9px 12px;font-size:13.5px;transition:all .15s}.form-input:focus{border-color:var(--border-focus);box-shadow:0 0 0 1px var(--border-focus)}.subdomain-input-group{background:var(--bg-input);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);align-items:center;transition:border-color .15s;display:flex;overflow:hidden}.subdomain-input-group:focus-within{border-color:var(--border-focus);box-shadow:0 0 0 1px var(--border-focus)}.subdomain-input-group input{color:var(--text-main);font-size:14px;font-family:var(--font-mono);background:0 0;border:none;outline:none;flex:1;padding:9px 14px}.subdomain-suffix{color:var(--text-muted);font-size:13.5px;font-family:var(--font-mono);border-left:1px solid var(--border-subtle);background:#ffffff0a;padding:9px 14px}.badge-pill{border-radius:var(--radius-full);letter-spacing:.2px;align-items:center;gap:5px;padding:2px 8px;font-size:11px;font-weight:600;display:inline-flex}.badge-emerald{color:#34d399;background:#10b9811f;border:1px solid #10b98140}.badge-blue{color:#93c5fd;background:#3b82f626;border:1px solid #3b82f64d}.btn-primary{color:#fff;border-radius:var(--radius-sm);cursor:pointer;background:linear-gradient(135deg,#2563eb,#1d4ed8);border:1px solid #ffffff26;justify-content:center;align-items:center;gap:8px;padding:8px 16px;font-size:13px;font-weight:600;transition:all .15s cubic-bezier(.16,1,.3,1);display:inline-flex;box-shadow:0 2px 8px #2563eb40}.btn-primary:hover{background:linear-gradient(135deg,#3b82f6,#2563eb)}.btn-primary:active{transform:scale(.98)}.btn-secondary{color:var(--text-main);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);cursor:pointer;background:#ffffff0a;justify-content:center;align-items:center;gap:8px;padding:7px 14px;font-size:13px;font-weight:500;transition:all .15s cubic-bezier(.16,1,.3,1);display:inline-flex}.btn-secondary:hover{border-color:var(--border-medium);background:#ffffff14}.btn-secondary:active{transform:scale(.98)}.split-editor{grid-template-columns:460px 1fr;align-items:start;gap:28px;display:grid}@media (width<=1200px){.split-editor{grid-template-columns:1fr}}.device-switcher{background:var(--bg-muted);border:1px solid var(--border-subtle);border-radius:var(--radius-full);align-items:center;gap:2px;padding:3px;display:flex}.device-btn{border-radius:var(--radius-full);color:var(--text-muted);cursor:pointer;background:0 0;border:none;align-items:center;gap:5px;padding:4px 10px;font-size:11.5px;font-weight:500;transition:all .15s;display:flex}.device-btn:hover{color:var(--text-main)}.device-btn.active{color:var(--text-main);background:#ffffff1a;font-weight:600;box-shadow:0 1px 4px #0000004d}@media (width<=768px){.client-sidebar{display:none}.client-content-area{margin-left:0}.client-header{padding:0 16px}.client-main{padding:16px}}