:root{--primary: #4F46E5;--primary-hover: #4338CA;--secondary: #10B981;--danger: #EF4444;--warning: #F59E0B;--bg-body: #F3F4F6;--bg-card: #FFFFFF;--text-main: #1F2937;--text-muted: #6B7280;--border: #E5E7EB;--space-1: .25rem;--space-2: .5rem;--space-4: 1rem;--space-6: 1.5rem;--space-8: 2rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: 1rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--transition: all .2s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--bg-body);color:var(--text-main);line-height:1.5;-webkit-font-smoothing:antialiased}button{cursor:pointer;border:none;font-family:inherit;transition:var(--transition)}a{text-decoration:none;color:inherit}.container{max-width:1200px;margin:0 auto;padding:0 var(--space-4)}.card{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:var(--space-6);border:1px solid var(--border)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:var(--space-2) var(--space-4);border-radius:var(--radius-md);font-weight:500;gap:var(--space-2)}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-ghost{background:transparent;color:var(--text-muted)}.btn-ghost:hover{background:var(--bg-body);color:var(--text-main)}.btn-blue{background:#2563eb;color:#fff}.btn-blue:hover{background:#1d4ed8;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-green{background:#059669;color:#fff}.btn-green:hover{background:#047857;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-purple{background:#7c3aed;color:#fff}.btn-purple:hover{background:#6d28d9;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-orange{background:#ea580c;color:#fff}.btn-orange:hover{background:#c2410c;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-teal{background:#0d9488;color:#fff}.btn-teal:hover{background:#0f766e;transform:translateY(-1px);box-shadow:var(--shadow-md)}.input{width:100%;padding:var(--space-2) 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#0000001a;overflow:hidden}.list-title{padding:.75rem 1rem;background:#f9fafb;font-weight:600;color:#6b7280;font-size:.9rem;border-bottom:1px solid #e5e7eb;margin:0}.search-result-item{padding:1rem;border-bottom:1px solid #f3f4f6;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .1s}.search-result-item:hover{background:#f3f4f6}.student-profile-card{background:#fff;border-radius:16px;padding:1.5rem;box-shadow:0 4px 6px -1px #0000001a;animation:slideIn .3s ease-out}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.profile-header{display:flex;gap:1rem;align-items:center;margin-bottom:1.5rem}.avatar-placeholder{width:64px;height:64px;background:#e0e7ff;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--primary)}.student-name-lg{font-size:1.5rem;font-weight:800;color:#111827;margin:0}.student-meta{color:#6b7280;font-size:1rem;margin:0}.financial-status-box{background:#f8fafc;border-radius:12px;padding:1rem;border:1px solid #e2e8f0}.status-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem;font-size:.95rem;color:#4b5563}.status-row.highlight{margin-bottom:0;margin-top:.75rem}.divider{height:1px;background:#e2e8f0;margin:.5rem 0}.amount-tag{padding:.25rem 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#f3f4f6;display:flex;flex-direction:column;background:#fff}.cart-header{padding:.5rem 1rem;background:#f9fafb;border-bottom:1px solid #e5e7eb;display:flex;align-items:center;gap:.5rem;color:#374151;flex-shrink:0}.cart-items{flex:1;overflow-y:auto;padding:.5rem;background:#fdfdfd}.cart-item{display:flex;justify-content:space-between;align-items:center;padding:.5rem;margin-bottom:.4rem;background:#fff;border:1px solid #e5e7eb;border-radius:8px;box-shadow:0 1px 2px #00000005}.item-name{font-weight:600;display:block;font-size:.85rem;color:#111827}.item-price{color:#6b7280;font-size:.75rem}.cart-controls{display:flex;align-items:center;gap:.4rem;background:#f3f4f6;padding:2px;border-radius:6px}.cart-controls button{border:none;background:#fff;width:22px;height:22px;border-radius:4px;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 1px 2px #0000000d}.cart-total{font-weight:700;margin-left:.5rem;font-size:.85rem;display:flex;align-items:center;gap:.4rem}.btn-trash{background:none;border:none;color:#ef4444;cursor:pointer;opacity:.6;padding:4px;transition:opacity .2s}.btn-trash:hover{opacity:1}.cart-footer{padding:.75rem 1rem;background:#fff;border-top:1px solid #e5e7eb;flex-shrink:0;box-shadow:0 -4px 6px -1px #0000000d}.total-row{display:flex;justify-content:space-between;font-size:1rem;font-weight:700;margin-bottom:.5rem;color:#111827}.total-val{color:#16a34a;font-size:1.25rem}.balance-projection{display:flex;justify-content:space-between;font-size:.8rem;color:#6b7280;margin-bottom:.5rem;padding-top:.25rem;border-top:1px dashed #e5e7eb}.warning-msg{text-align:center;color:#b91c1c;background:#fef2f2;border-radius:6px;padding:.25rem;font-size:.75rem;font-weight:700;margin-bottom:.5rem}.btn-checkout{width:100%;padding:.85rem;background:var(--primary);color:#fff;border:none;border-radius:12px;font-weight:800;font-size:1.1rem;cursor:pointer;transition:all .2s;box-shadow:0 4px 6px -1px #4f46e533}.btn-checkout:active{transform:scale(.98)}.btn-checkout:hover:not(.disabled){filter:brightness(1.1);box-shadow:0 6px 12px -1px #4f46e54d}.btn-checkout.disabled{background:#e5e7eb;color:#9ca3af;cursor:not-allowed;box-shadow:none}.badge{padding:2px 8px;border-radius:4px;font-size:.7rem;font-weight:700;text-transform:uppercase}.badge-mini-blue{background:#eff6ff;color:#2563eb;font-size:.6rem;padding:1px 4px;border-radius:3px;border:1px solid #bfdbfe}.clients-container{padding:2rem 1rem;max-width:800px;margin:0 auto}.clients-header{margin-bottom:2rem}.title-main{font-size:1.5rem;font-weight:700}.subtitle{color:var(--text-muted)}.btn-back{padding-left:0;margin-bottom:1rem}.search-form{display:flex;gap:.5rem;margin-bottom:1.5rem}.search-input-wrapper{flex:1}.filter-bar{display:flex;align-items:center;gap:.75rem;margin-bottom:1rem;flex-wrap:wrap}.filter-pill{padding:.5rem 1rem;border-radius:var(--radius-full);border:1px solid var(--border);background:var(--bg-card);color:var(--text-muted);font-size:.9rem;font-weight:500;cursor:pointer;transition:var(--transition)}.filter-pill:hover{background:var(--bg-body);border-color:var(--primary)}.filter-pill.active{background:var(--primary);color:#fff;border-color:var(--primary)}.filter-pill.active-red{background:#dc2626;color:#fff;border-color:#dc2626}.filter-pill.active-blue{background:#2563eb;color:#fff;border-color:#2563eb}.filter-pill.active-indigo{background:#4f46e5;color:#fff;border-color:#4f46e5}.badge-mini-blue{background:#eff6ff;color:#2563eb;font-size:.7rem;padding:2px 6px;border-radius:4px;border:1px solid #bfdbfe;font-weight:600}.amount-tag{padding:.25rem .75rem;border-radius:var(--radius-full);font-weight:700;font-size:.85rem}.amount-tag.bg-green{background:#dcfce7;color:#166534}.amount-tag.bg-red{background:#fee2e2;color:#991b1b}.badge{padding:4px 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var(--primary);padding:var(--space-6);background:var(--bg-card);border-radius:var(--radius-lg)}.student-avatar{width:64px;height:64px;background:#e0e7ff;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--primary);flex-shrink:0}.student-info-section{flex:1}.student-header-row{display:flex;align-items:center;gap:.5rem}.student-title{font-size:1.25rem;font-weight:700}.allergies-box{background:#fef2f2;border:1px solid #F87171;color:#991b1b;padding:.75rem;border-radius:8px;margin-bottom:1rem;font-weight:700}.parent-info-box{background:#f3f4f6;padding:.75rem;border-radius:8px;margin-bottom:1rem;font-size:.9rem}.parent-info-label{font-weight:700;color:#374151;margin-bottom:.25rem}.email-row{display:flex;justify-content:space-between;align-items:center;margin-top:4px}.history-section-title{font-size:1.1rem;font-weight:700;margin-bottom:1rem}.transaction-card{padding:.75rem;margin-bottom:.5rem;background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border-width:0 0 0 4px;border-style:solid}.transaction-header{display:flex;justify-content:space-between;align-items:flex-start}.transaction-amount{font-weight:700;font-size:1.1rem}.transaction-badge{padding:2px 6px;border-radius:4px;font-weight:700;font-size:.75rem;display:inline-block}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:100;padding:1rem}.modal-content{width:100%;max-width:500px;background:#fff;padding:1.5rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);max-height:90vh;overflow-y:auto}.modal-header{display:flex;justify-content:space-between;margin-bottom:1rem}.modal-title{font-weight:700;font-size:1.25rem}.form-group{display:flex;flex-direction:column;gap:1rem}.form-row{display:flex;gap:1rem}@media(max-width:768px){.clients-container{padding:1rem}.student-detail-card{flex-direction:column;align-items:flex-start;gap:1rem;padding:1rem}.student-avatar{align-self:center;margin-bottom:.5rem}.email-row{flex-direction:column;align-items:flex-start;gap:.5rem}.email-row button{width:100%}.form-row{flex-direction:column;gap:1rem}}