:root{--bg: #0f172a;--card: #1e293b;--border: #334155;--text: #e2e8f0;--muted: #94a3b8;--accent: #6366f1;--pass: #10b981;--fail: #ef4444;--warn: #f59e0b}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text)}.app{max-width:1200px;margin:0 auto;padding:24px}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.title{font-size:24px;font-weight:700}.nav{display:flex;gap:16px}.nav a{color:var(--accent);text-decoration:none}.btn{background:var(--accent);color:#fff;border:none;padding:8px 16px;border-radius:8px;cursor:pointer;font-weight:600}.btn:hover{opacity:.9}.btn-danger{background:var(--fail)}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:16px}.form{display:flex;flex-direction:column;gap:12px;max-width:400px}.form input,.form textarea{padding:8px 12px;background:var(--bg);border:1px solid var(--border);border-radius:6px;color:var(--text);font-size:14px}.item{display:flex;justify-content:space-between;align-items:center;padding:12px;border-bottom:1px solid var(--border)}.item:last-child{border-bottom:none}.error{color:var(--fail);padding:8px;background:#ef44441a;border-radius:6px}.badge{display:inline-block;padding:2px 8px;border-radius:4px;font-size:12px;font-weight:600}.badge-admin{background:var(--fail);color:#fff}.badge-user{background:var(--accent);color:#fff}.badge-guest{background:var(--muted);color:var(--bg)}