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var(--transition-fast)}.dashboard-alert-item:hover{background:var(--surface-hover)}.dashboard-alert-warning{border-left-color:var(--warning);background:#f59e0b0f}.dashboard-alert-info{border-left-color:var(--info);background:#3b82f60f}.dashboard-alert-danger{border-left-color:var(--danger);background:#ef44440f}.dashboard-alert-content{display:flex;align-items:center;gap:var(--space-3);flex:1;min-width:0}.dashboard-alert-icon{font-size:var(--text-lg);flex-shrink:0}.dashboard-alert-text{display:flex;flex-direction:column;min-width:0}.dashboard-alert-title{font-size:var(--text-sm);font-weight:600;color:var(--text-primary)}.dashboard-alert-detail{font-size:var(--text-xs);color:var(--text-tertiary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.dashboard-alert-dismiss-btn{display:inline-flex;align-items:center;gap:4px;height:28px;padding:0 10px;border:1px solid rgba(16,185,129,.25);border-radius:var(--radius-md);background:#10b98114;color:var(--success, 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p{font-size:var(--text-sm);max-width:300px}.tooltip{position:relative}.tooltip:after{content:attr(data-tooltip);position:absolute;bottom:calc(100% + 8px);left:50%;transform:translate(-50%);padding:var(--space-1) var(--space-3);background:var(--surface-3);color:var(--text-primary);font-size:var(--text-xs);border-radius:var(--radius-sm);white-space:nowrap;opacity:0;pointer-events:none;transition:opacity var(--transition-fast)}.tooltip:hover:after{opacity:1}.form-group{margin-bottom:var(--space-5)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-4)}@media(max-width:768px){:root{--sidebar-width: 100%;--header-height: 96px}.app-main{flex-direction:column;height:auto;min-height:0;overflow:visible}.admin-page-shell{overflow-x:hidden;padding-bottom:var(--space-6)}.admin-summary-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-2);padding:var(--space-3)}.admin-calendar-wrap{padding:0 var(--space-3)}.admin-student-workspace{height:auto;min-height:0;gap:var(--space-3);padding:0 var(--space-3) var(--space-4)}.dashboard-alerts{margin:var(--space-2) var(--space-3) 0}.dashboard-alert-item,.dashboard-alerts-toggle{align-items:flex-start;gap:var(--space-2)}.dashboard-alert-detail{white-space:normal}.form-row{grid-template-columns:1fr}}@media(max-width:430px){.admin-summary-grid{grid-template-columns:1fr}}.preview-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:500;background:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center}.preview-modal{width:520px;max-width:95vw;max-height:90vh;background:#fff;border-radius:16px;overflow-y:auto;box-shadow:0 24px 64px #0003,0 0 0 1px #0000000d;position:relative}.preview-modal-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:#f8f8fb;border-bottom:1px solid 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*{color:inherit!important;box-sizing:border-box!important}.preview-modal-body .inv-header{display:flex!important;justify-content:space-between!important;align-items:flex-start!important;margin-bottom:10mm!important}.preview-modal-body .inv-customer-name{font-size:18px!important;font-weight:700!important;color:#1a1a1a!important}.preview-modal-body .inv-title{display:inline-block!important;background:#2d3748!important;color:#fff!important;font-size:16px!important;font-weight:700!important;padding:4px 18px!important;letter-spacing:4px!important}.preview-modal-body .inv-title-block{text-align:right!important}.preview-modal-body .inv-title-date,.preview-modal-body .inv-title-no{font-size:11px!important;color:#555!important}.preview-modal-body .inv-company{text-align:right!important;font-size:10px!important;color:#1a1a1a!important}.preview-modal-body .inv-company-name{font-size:14px!important;font-weight:700!important;color:#1a1a1a!important}.preview-modal-body .inv-middle{display:flex!important;gap:8mm!important;margin-bottom:8mm!important}.preview-modal-body .inv-message-box{flex:1!important;border:1px solid #ccc!important;padding:8px 12px!important;font-size:10px!important;color:#1a1a1a!important;background:#fff!important}.preview-modal-body .inv-bank-title{font-weight:700!important;color:#1a1a1a!important}.preview-modal-body .inv-bank-detail{color:#1a1a1a!important}.preview-modal-body .inv-due-line{text-align:right!important;font-size:12px!important;color:#4338ca!important;font-weight:500!important}.preview-modal-body .inv-due-line strong{font-weight:700!important}.preview-modal-body .inv-table{width:100%!important;border-collapse:collapse!important;background:#fff!important}.preview-modal-body .inv-table th{background:#2d3748!important;color:#fff!important;padding:6px 10px!important;font-size:10px!important;font-weight:700!important;border:1px solid #2d3748!important}.preview-modal-body .inv-table td{padding:6px 10px!important;border:1px solid #ccc!important;font-size:10px!important;color:#1a1a1a!important;background:#fff!important}.preview-modal-body .inv-footer-table{margin-left:auto!important;border-collapse:collapse!important}.preview-modal-body .inv-ft-label{padding:5px 14px!important;font-size:10px!important;font-weight:700!important;color:#1a1a1a!important;background:#f7f7f7!important;border:1px solid #ccc!important}.preview-modal-body .inv-ft-value{padding:5px 14px!important;font-size:11px!important;font-weight:700!important;color:#1a1a1a!important;border:1px solid #ccc!important}.preview-modal-body .inv-ft-grand .inv-ft-label.grand{background:#2d3748!important;color:#fff!important;border-color:#2d3748!important}.preview-modal-body .inv-ft-grand .inv-ft-value.grand{border:2px solid #2d3748!important;background:#eef2ff!important}