:root{color-scheme:light;--bg:#f7f8fa;--panel:#ffffff;--text:#16202a;--muted:#5c6975;--line:#d8dde3;--brand:#146c63;--brand-strong:#0b4f49;--accent:#345c96;--danger:#9f2d2d;--radius:8px}*{box-sizing:border-box}body,html{min-height:100%;margin:0;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.auth-page{display:grid;min-height:100vh;place-items:center;padding:24px}.auth-panel{width:min(100%,420px);background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px}.app-shell{display:grid;min-height:100vh;grid-template-columns:260px 1fr}.sidebar{background:#122029;color:#f8fafb;padding:24px 18px}.brand{margin-bottom:28px}.brand-title{margin:0;font-size:20px;font-weight:700}.brand-subtitle{margin:6px 0 0;color:#bac5cb;font-size:13px}.nav-list{display:grid;grid-gap:6px;gap:6px}.nav-link{border-radius:6px;color:#e9eef1;padding:10px 12px}.nav-link:hover{background:#21313b}.sidebar-footer{margin-top:36px;color:#bac5cb;font-size:13px}.main{min-width:0;padding:28px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:28px}.page-title{margin:0;font-size:28px}.page-subtitle{margin:6px 0 0;color:var(--muted)}.grid{grid-gap:16px}.grid,.stats-grid{display:grid;gap:16px}.stats-grid{grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:16px}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px}.stat-value{display:block;font-size:30px;font-weight:700}.stat-label{color:var(--muted);font-size:13px}.toolbar{display:flex;justify-content:space-between;gap:16px;margin-bottom:16px}.button,.toolbar{align-items:center}.button{background:var(--brand);border:0;border-radius:6px;color:white;cursor:pointer;display:inline-flex;font-weight:700;min-height:40px;padding:0 14px}.button:hover{background:var(--brand-strong)}.button.secondary{background:#eef2f4;color:var(--text)}.button.secondary:hover{background:#dde4e8}.button.danger{background:var(--danger)}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;min-width:760px}td,th{border-bottom:1px solid var(--line);padding:12px 10px;text-align:left;vertical-align:top}th{color:var(--muted);font-size:12px;text-transform:uppercase}.form-grid{display:grid;grid-gap:14px;gap:14px}.form-row{display:grid;grid-gap:6px;gap:6px}.form-row label{color:var(--muted);font-size:13px;font-weight:700}.input,.select,.textarea{width:100%;border:1px solid var(--line);border-radius:6px;min-height:42px;padding:9px 10px}.textarea{min-height:86px;resize:vertical}.notice{border-left:4px solid var(--accent);background:#f0f4fa;border-radius:6px;padding:12px 14px}.error{color:var(--danger);font-weight:700}.success{color:var(--brand-strong);font-weight:700}.code-box{overflow-wrap:anywhere;background:#f2f5f7;border:1px solid var(--line);border-radius:6px;padding:12px}@media (max-width:900px){.app-shell{grid-template-columns:1fr}.sidebar{position:static}.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:560px){.main{padding:20px}.toolbar,.topbar{align-items:flex-start;flex-direction:column}.stats-grid{grid-template-columns:1fr}}