:root{--bg: #f5f6f8;--surface: #ffffff;--border: #e2e5ea;--text: #1a1d23;--text-muted: #6b7280;--primary: #2f5dff;--primary-dark: #1e40cc;--danger: #dc2626;--danger-bg: #fef2f2;--success: #16a34a;--success-bg: #f0fdf4;--warning: #d97706;--warning-bg: #fffbeb;--radius: 10px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.app-shell{display:flex;min-height:100vh}.sidebar{width:230px;background:var(--surface);border-right:1px solid var(--border);padding:20px 14px;flex-shrink:0}.sidebar h1{font-size:17px;margin:6px 8px 24px}.sidebar nav a{display:block;padding:10px 12px;border-radius:8px;color:var(--text);font-size:14px;font-weight:500;margin-bottom:2px}.sidebar nav a:hover{background:var(--bg);text-decoration:none}.sidebar nav a.active{background:#eef2ff;color:var(--primary-dark)}.sidebar .logout{margin-top:24px;font-size:13px;color:var(--text-muted);cursor:pointer;padding:10px 12px}.sidebar .logout:hover{color:var(--danger)}.main{flex:1;padding:28px 36px;max-width:1100px}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;gap:16px;flex-wrap:wrap}.page-header h2{margin:0;font-size:22px}.btn{background:var(--primary);color:#fff;border:none;border-radius:8px;padding:9px 16px;font-size:14px;font-weight:600;cursor:pointer}.btn:hover{background:var(--primary-dark)}.btn.secondary{background:var(--surface);color:var(--text);border:1px solid var(--border)}.btn.secondary:hover{background:var(--bg)}.btn.danger{background:var(--danger)}.btn.danger:hover{background:#b91c1c}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.small{padding:6px 10px;font-size:13px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:18px}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin-bottom:24px}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.stat-card .value{font-size:26px;font-weight:700}.stat-card .label{font-size:13px;color:var(--text-muted);margin-top:2px}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border)}th{color:var(--text-muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em}tr:hover td{background:#fafbfc}tr.clickable{cursor:pointer}.badge{display:inline-block;padding:3px 9px;border-radius:999px;font-size:12px;font-weight:600}.badge.active{background:var(--success-bg);color:var(--success)}.badge.revoked{background:var(--danger-bg);color:var(--danger)}.badge.expired{background:var(--warning-bg);color:var(--warning)}.form-grid{display:grid;gap:14px;max-width:480px}.form-grid label{font-size:13px;font-weight:600;margin-bottom:5px;display:block}.form-grid input,.form-grid select,.form-grid textarea{width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit}.form-grid textarea{resize:vertical;min-height:70px}.form-row{display:flex;gap:10px}.error-msg{background:var(--danger-bg);color:var(--danger);padding:10px 14px;border-radius:8px;font-size:14px;margin-bottom:14px}.info-msg{background:#eef2ff;color:var(--primary-dark);padding:10px 14px;border-radius:8px;font-size:13px;margin-bottom:14px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.login-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:36px;width:100%;max-width:380px}.login-card h1{font-size:20px;margin:0 0 4px}.login-card p.sub{color:var(--text-muted);font-size:13px;margin:0 0 22px}.key-display{font-family:Courier New,monospace;font-size:15px;font-weight:700;letter-spacing:.5px;background:var(--bg);padding:4px 8px;border-radius:6px}.muted{color:var(--text-muted)}.section-title{font-size:15px;font-weight:700;margin:0 0 12px}.empty-state{color:var(--text-muted);font-size:14px;padding:24px 0;text-align:center}.actions-row{display:flex;gap:8px;flex-wrap:wrap}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;display:flex;align-items:center;justify-content:center;z-index:50}.modal{background:var(--surface);border-radius:var(--radius);padding:24px;width:100%;max-width:460px;max-height:90vh;overflow:auto}.modal h3{margin-top:0}