:root{--font-sans:'Inter',-apple-system,sans-serif;--font-mono:'JetBrains Mono',monospace;--radius:12px;--transition:0.25s ease}
[data-theme="dark"]{--bg:#0F172A;--bg2:#1E293B;--bg-card:rgba(30,41,59,0.85);--bg-input:rgba(51,65,85,0.5);--border:rgba(148,163,184,0.1);--text:#F1F5F9;--text2:#94A3B8;--text3:#64748B;--primary:#6366F1;--accent:#22D3EE;--gradient:linear-gradient(135deg,#6366F1,#8B5CF6)}
[data-theme="light"]{--bg:#F8FAFC;--bg2:#FFFFFF;--bg-card:rgba(255,255,255,0.95);--bg-input:rgba(241,245,249,0.5);--border:rgba(0,0,0,0.08);--text:#1E293B;--text2:#475569;--text3:#94A3B8;--primary:#4F46E5;--accent:#0891B2;--gradient:linear-gradient(135deg,#4F46E5,#7C3AED)}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);min-height:100vh}
.app{max-width:800px;margin:0 auto}.header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid var(--border)}
.logo{display:flex;align-items:center;gap:10px}.logo h1{font-size:1rem;font-weight:700;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.btn{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-sans);font-size:.82rem;font-weight:500;padding:8px 16px;border-radius:8px;border:none;cursor:pointer;transition:all var(--transition)}
.btn-primary{background:var(--gradient);color:#fff}.btn-primary:hover{transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text2)}.btn-ghost:hover{background:var(--bg-input);color:var(--text)}
.main{padding:24px}
.panels{display:grid;grid-template-columns:1fr 320px;gap:24px;align-items:start}
.panel-left{display:flex;flex-direction:column;gap:12px}
.tabs{display:flex;gap:4px;padding:4px;background:var(--bg-input);border-radius:8px}
.tab{flex:1;font-family:var(--font-sans);font-size:.78rem;font-weight:500;padding:8px;background:transparent;color:var(--text2);border:none;border-radius:6px;cursor:pointer;transition:all var(--transition)}
.tab.active{background:var(--gradient);color:#fff}
textarea,input[type="url"],input[type="text"],input[type="tel"],input[type="email"],input[type="password"],select{width:100%;padding:10px;background:var(--bg-input);color:var(--text);border:1px solid var(--border);border-radius:8px;font-family:var(--font-mono);font-size:.85rem;outline:none;margin-bottom:6px}textarea:focus,input:focus,select:focus{border-color:var(--primary)}
.opts{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}
.opt{flex:1;min-width:80px}.opt-label{font-size:.72rem;color:var(--text3);margin-bottom:4px;display:block}
input[type="color"]{width:100%;height:36px;padding:2px;border:1px solid var(--border);border-radius:6px;cursor:pointer;background:none}
.panel-right{display:flex;flex-direction:column;align-items:center;gap:14px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
canvas{border-radius:8px;max-width:100%}
.dl-actions{display:flex;gap:8px}
[data-theme="dark"] .icon-moon{display:none}[data-theme="dark"] .icon-sun{display:block}[data-theme="light"] .icon-moon{display:block}[data-theme="light"] .icon-sun{display:none}
@media(max-width:640px){.panels{grid-template-columns:1fr}.main{padding:16px}}