:root{color-scheme:light;font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;background:#f5f7fb;color:#172033}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input,select{font:inherit}button{cursor:pointer}.login-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(135deg,#eef5ff,#f8fbf5)}.login-panel{width:min(420px,100%);display:grid;gap:16px;padding:32px;background:#fff;border:1px solid #e4e9f2;border-radius:8px;box-shadow:0 18px 50px #1720331f}.login-panel h1,.topbar h1,.panel h2{margin:0}.login-panel p,.topbar p{margin:4px 0 0;color:#657187}.login-icon,.brand-mark{width:48px;height:48px;display:grid;place-items:center;border-radius:8px;background:#1976d2;color:#fff;font-weight:800}label{display:grid;gap:8px;color:#39465c;font-weight:600}input,select{width:100%;border:1px solid #d7deea;border-radius:6px;padding:10px 12px;background:#fff;color:#172033}select[multiple]{min-height:108px}.primary-button,.secondary-button,.icon-button,.nav-item{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:6px;min-height:40px;padding:10px 14px;font-weight:700}.primary-button{background:#1976d2;color:#fff}.secondary-button,.icon-button{background:#edf2f7;color:#172033}.app-shell{min-height:100vh;display:grid;grid-template-columns:248px 1fr}.sidebar{padding:20px;background:#102033;color:#fff}.brand{display:flex;align-items:center;gap:12px;margin-bottom:28px}.brand span{display:block;color:#a9b6c8;font-size:13px}.sidebar nav{display:grid;gap:8px}.nav-item{width:100%;justify-content:flex-start;background:transparent;color:#dfe8f5}.nav-item:hover{background:#ffffff1a}.main{min-width:0;padding:24px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px}.content-stack{display:grid;gap:18px}.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.metric-card,.panel{background:#fff;border:1px solid #e4e9f2;border-radius:8px}.metric-card{padding:18px;border-top:4px solid #1976d2}.metric-card.green{border-top-color:#388e3c}.metric-card.orange{border-top-color:#f57c00}.metric-card.gray{border-top-color:#757575}.metric-card span{display:block;color:#657187;font-size:13px;margin-bottom:8px}.metric-card strong{font-size:26px}.panel{padding:20px}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.panel-heading span{color:#657187}.form-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;align-items:end}.user-form{grid-template-columns:repeat(3,minmax(0,1fr))}.chart-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.chart-box{min-height:280px;min-width:0}.table-wrap{width:100%;overflow:auto}table{width:100%;border-collapse:collapse;font-size:14px}th,td{padding:12px;border-bottom:1px solid #e9edf5;text-align:left;white-space:nowrap}th{background:#f7f9fc;color:#39465c;text-transform:capitalize}.alert{padding:12px 14px;border-radius:6px}.alert.error{background:#fff0f0;color:#b42318;border:1px solid #ffd1d1}.alert.success{background:#eef8f0;color:#1b6f32;border:1px solid #cfead5}.empty-state{padding:24px;color:#657187;text-align:center}.loading-report{display:inline-flex;align-items:center;gap:10px;width:fit-content;min-height:44px;padding:10px 14px;color:#39465c;background:#f7f9fc;border:1px solid #dfe6f1;border-radius:6px;font-weight:700}.loading-spinner{color:#1976d2;animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.danger-icon{width:36px;height:36px;display:inline-grid;place-items:center;border:0;border-radius:6px;color:#c62828;background:#fff0f0}@media(max-width:980px){.app-shell{grid-template-columns:1fr}.sidebar{position:static}.metric-grid,.chart-grid,.form-grid,.user-form{grid-template-columns:1fr 1fr}}@media(max-width:640px){.main{padding:16px}.topbar,.panel-heading{align-items:flex-start;flex-direction:column}.metric-grid,.chart-grid,.form-grid,.user-form{grid-template-columns:1fr}}