*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg: #0f1923;--surface: #1a2734;--surface-alt: #162230;--sidebar: #0d1520;--border: #2a3a4a;--text: #e0e6ed;--text-muted: #8899aa;--accent: #4fc3f7;--accent-hover: #39b0e6;--green: #66bb6a;--red: #ef5350;--yellow: #ffa726;--radius: 8px;--radius-sm: 4px;--sidebar-width: 220px;--header-height: 56px;--transition: .18s ease}html{font-size:14px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:Segoe 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h1{font-size:1.4rem;font-weight:700;color:var(--accent);text-align:center;margin-bottom:8px}.login-card p{text-align:center;color:var(--text-muted);font-size:.85rem;margin-bottom:28px}.login-card .form-group{margin-bottom:18px}.login-card .btn{width:100%;padding:10px;font-size:.95rem}.login-error{color:var(--red);font-size:.82rem;text-align:center;margin-bottom:12px}.text-muted{color:var(--text-muted)}.text-accent{color:var(--accent)}.text-green{color:var(--green)}.text-red{color:var(--red)}.text-center{text-align:center}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}.flex{display:flex}.items-center{align-items:center}.gap-1{gap:8px}.gap-2{gap:16px}.spinner{width:28px;height:28px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .6s linear infinite}.loading-center{display:flex;align-items:center;justify-content:center;padding:48px}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:48px 24px;color:var(--text-muted)}.empty-state p{font-size:.95rem}@media (max-width: 1024px){.stat-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 768px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.main-wrapper{margin-left:0}.header{padding:0 16px}.page-content{padding:16px}.stat-grid{grid-template-columns:1fr}.page-header{flex-direction:column;align-items:flex-start}.table-wrapper{overflow-x:auto}table{min-width:600px}.form-row{flex-direction:column}.modal-card{width:95%;max-height:90vh}}.sidebar-toggle{display:none;background:none;border:none;color:var(--text);font-size:1.3rem;padding:4px;margin-right:auto}@media (max-width: 768px){.sidebar-toggle{display:flex}}.sidebar-backdrop{display:none}@media (max-width: 768px){.sidebar-backdrop.visible{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:99}}