:root{--bg:#f5f5f7;--panel:#ffffff;--text:#1d1d1f;--muted:#6e6e73;--border:#d9d9de;--dark:#111111;--blue:#0066cc;--green:#16794c;--red:#b42318}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.shell{display:grid;grid-template-columns:248px 1fr;min-height:100vh}.nav{background:var(--dark);color:white;padding:22px 18px;display:flex;flex-direction:column;gap:18px}.brand{font-weight:760;letter-spacing:0;font-size:18px}.nav-links{display:grid;grid-gap:6px;gap:6px}.nav-link{display:flex;align-items:center;gap:10px;color:#c7c7cc;padding:10px 12px;border-radius:6px;font-size:14px}.nav-link:hover{background:#242426;color:white}.main{padding:28px;min-width:0}.page{max-width:1180px;margin:0 auto;display:grid;grid-gap:18px;gap:18px}.page-header{display:flex;justify-content:space-between;gap:16px;align-items:center}h1{margin:0;font-size:26px;letter-spacing:0}h2{margin:0 0 12px;font-size:16px}.muted{color:var(--muted);font-size:13px}.grid{display:grid;grid-gap:16px;gap:16px}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.card{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:18px}.stat{display:grid;grid-gap:6px;gap:6px}.stat strong{font-size:24px}.btn{border:1px solid var(--dark);background:var(--dark);color:white;border-radius:6px;padding:9px 13px;cursor:pointer;display:inline-flex;align-items:center;gap:8px;font-size:14px}.btn.secondary{background:white;color:var(--dark);border-color:var(--border)}.btn:disabled{opacity:.55;cursor:not-allowed}.table{width:100%;border-collapse:collapse}.table td,.table th{padding:12px 10px;border-bottom:1px solid var(--border);text-align:left;font-size:14px;vertical-align:top}.table th{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.02em}.badge{display:inline-flex;border-radius:999px;padding:3px 8px;font-size:12px;background:#eeeef0;color:#424245}.badge.green{background:#e9f7ef;color:var(--green)}.badge.red{background:#fff0ee;color:var(--red)}.field{display:grid;grid-gap:6px;gap:6px}.field label{font-size:12px;color:var(--muted);font-weight:650;text-transform:uppercase}input,select,textarea{width:100%;border:1px solid var(--border);border-radius:6px;padding:10px 11px;background:white;color:var(--text)}textarea{min-height:150px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}.alert{padding:11px 13px;border-radius:6px;font-size:14px;border:1px solid var(--border);background:white}.alert.ok{border-color:#b8e2c9;color:var(--green);background:#f1fbf5}.alert.err{border-color:#ffd0c8;color:var(--red);background:#fff7f5}.preview{width:100%;min-height:520px;border:1px solid var(--border);border-radius:8px;background:white}.login{min-height:100vh;display:grid;place-items:center;padding:20px}.login-card{width:min(420px,100%)}@media (max-width:820px){.shell{grid-template-columns:1fr}.nav{position:static}.grid-2,.grid-3{grid-template-columns:1fr}.main{padding:18px}}