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var(--border);border-radius:var(--radius-md);padding:24px;box-shadow:var(--shadow-sm)}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.card-title{font-size:1rem;font-weight:700;color:var(--dark)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-md);padding:20px;display:flex;flex-direction:column;gap:6px;box-shadow:var(--shadow-sm);transition:box-shadow .2s var(--ease)}.stat-card:hover{box-shadow:var(--shadow-md)}.stat-card-label{font-size:.82rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}.stat-card-value{font-size:1.8rem;font-weight:800;color:var(--dark);line-height:1.1}.stat-card-value--accent{color:var(--accent)}.stat-card-value--primary{color:var(--primary-light)}.table-wrapper{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--white)}.table{width:100%;border-collapse:collapse;font-size:.88rem}.table th{text-align:left;padding:12px 16px;font-weight:700;font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);background:var(--light-bg);border-bottom:1px solid var(--border);white-space:nowrap}.table td{padding:12px 16px;border-bottom:1px solid var(--border);color:var(--text)}.table tr:last-child td{border-bottom:none}.table tr:hover td{background:#eef1ff80}.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:100px;font-size:.75rem;font-weight:700;white-space:nowrap}.badge--active,.badge--success{background:var(--success-light);color:#276749}.badge--warning{background:var(--warning-light);color:#975a16}.badge--danger,.badge--expired{background:var(--danger-light);color:#c53030}.badge--free{background:var(--light-bg);color:var(--muted)}.badge--pro{background:#2b3bf71a;color:var(--primary-dark)}.badge--institutional{background:#11b88d1a;color:#0d7a5f}.badge--teacher{background:#2b3bf71a;color:var(--primary-light)}.badge--student{background:var(--light-bg);color:var(--muted)}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;color:var(--muted);gap:12px}.loading-spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--primary-light);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-inline{display:flex;align-items:center;justify-content:center;padding:40px;color:var(--muted);gap:10px}.loading-inline .loading-spinner{width:24px;height:24px;border-width:2.5px}.page-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:300px;text-align:center;color:var(--muted);gap:8px}.page-placeholder h2{font-size:1.2rem;font-weight:700;color:var(--dark)}.page-placeholder p{font-size:.9rem}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px 24px;text-align:center;color:var(--muted);gap:12px}.empty-state-title{font-size:1rem;font-weight:700;color:var(--text)}.empty-state-text{font-size:.88rem;max-width:400px}.filters-bar{display:flex;align-items:center;gap:12px;margin-bottom:20px;flex-wrap:wrap}.filters-bar .form-input,.filters-bar .form-select{width:auto;min-width:180px;padding:8px 12px;font-size:.85rem}.text-muted{color:var(--muted)}.text-accent{color:var(--accent)}.text-danger{color:var(--danger)}.text-sm{font-size:.82rem}.font-bold{font-weight:700}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}.flex{display:flex}.flex-between{display:flex;justify-content:space-between;align-items:center}.gap-1{gap:8px}.gap-2{gap:16px}@media(max-width:768px){:root{--sidebar-width:0px}.sidebar{transform:translate(-100%);transition:transform .3s var(--ease)}.sidebar.sidebar--open{transform:translate(0);width:260px}.admin-main{margin-left:0}.admin-content{padding:20px 16px}.header{padding:0 16px}.stats-grid{grid-template-columns:repeat(2,1fr)}.login-card{padding:32px 24px}}@media(max-width:480px){.stats-grid{grid-template-columns:1fr}.header-user-name{display:none}}