.sidebar{width:260px;height:100vh;background-color:var(--bg-sidebar);color:var(--text-light);display:flex;flex-direction:column;padding:var(--spacing-lg);position:fixed;left:0;top:0;border-right:1px solid var(--border);transition:var(--transition-normal)}.sidebar-header{display:flex;align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-xl);padding:0 var(--spacing-sm)}.logo-icon{width:2rem;height:2rem;color:var(--accent)}.logo-text{font-size:1.25rem;font-weight:700;color:#fff}.sidebar-nav{display:flex;flex-direction:column;gap:var(--spacing-xs);gap:.5rem;flex:1}.nav-item{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);border-radius:var(--radius-md);color:var(--text-muted);transition:var(--transition-fast);font-weight:500}.nav-item:hover{background-color:#ffffff0d;color:var(--text-light)}.nav-item.active{background-color:var(--primary);color:#fff;box-shadow:var(--shadow-md)}.sidebar-footer{margin-top:auto;padding-top:var(--spacing-md);border-top:1px solid rgba(255,255,255,.1)}.logout-btn{width:100%;color:#ef4444}.logout-btn:hover{background-color:#ef44441a;color:#f87171}.header{height:64px;background-color:var(--bg-card);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 var(--spacing-xl);position:sticky;top:0;z-index:10}.search-bar{position:relative;width:300px}.search-icon{position:absolute;left:var(--spacing-sm);top:50%;transform:translateY(-50%);color:var(--text-muted)}.search-bar input{width:100%;padding:.5rem .5rem .5rem 2.25rem;border:1px solid var(--border);border-radius:var(--radius-md);background-color:var(--bg-body);color:var(--text-main);transition:var(--transition-fast)}.search-bar input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px #4f46e51a}.header-actions{display:flex;align-items:center;gap:var(--spacing-lg)}.icon-btn{position:relative;padding:var(--spacing-sm);color:var(--text-muted);border-radius:var(--radius-md);transition:var(--transition-fast)}.icon-btn:hover{background-color:var(--bg-body);color:var(--primary)}.badge{position:absolute;top:0;right:0;background-color:#ef4444;color:#fff;font-size:.75rem;width:16px;height:16px;border-radius:50%;display:flex;align-items:center;justify-content:center}.user-profile{display:flex;align-items:center;gap:var(--spacing-sm);cursor:pointer}.avatar{width:32px;height:32px;background-color:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff}.user-info{display:flex;flex-direction:column}.user-name{font-size:.875rem;font-weight:600;color:var(--text-main)}.user-role{font-size:.75rem;color:var(--text-muted)}.logout-btn{border:none;background:transparent;cursor:pointer}.logout-btn:hover{color:#ef4444}.main-layout{display:flex;min-height:100vh}.main-content{flex:1;margin-left:260px;display:flex;flex-direction:column;background-color:var(--bg-body)}.page-content{padding:var(--spacing-xl);flex:1;overflow-y:auto}.dashboard-page{display:flex;flex-direction:column;gap:var(--spacing-xl)}.page-title{font-size:1.5rem;font-weight:700;color:var(--text-main);margin-bottom:var(--spacing-md)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--spacing-lg)}.stat-card{background-color:var(--bg-card);padding:var(--spacing-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border);transition:transform var(--transition-normal)}.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.stat-card.clickable{cursor:pointer}.stat-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:var(--spacing-md)}.stat-icon-wrapper{background-color:#4f46e51a;padding:var(--spacing-sm);border-radius:var(--radius-md);color:var(--primary)}.stat-icon{width:24px;height:24px}.stat-trend{font-size:.875rem;font-weight:600;padding:.125rem .5rem;border-radius:1rem}.stat-trend.positive{background-color:#22c55e1a;color:#16a34a}.stat-trend.negative{background-color:#ef44441a;color:#dc2626}.stat-value{font-size:1.875rem;font-weight:700;color:var(--text-main);line-height:1.2}.stat-title{color:var(--text-muted);font-size:.875rem;margin-top:.25rem}.content-grid{display:grid;grid-template-columns:2fr 1fr;gap:var(--spacing-lg)}.card{background-color:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow-sm);padding:var(--spacing-lg)}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-lg);padding-bottom:var(--spacing-md);border-bottom:1px solid var(--border)}.card-header h2{font-size:1.125rem;font-weight:600}.btn-link{color:var(--primary);font-size:.875rem;font-weight:500}.activity-list{display:flex;flex-direction:column;gap:var(--spacing-md)}.activity-item{display:flex;gap:var(--spacing-md);align-items:center}.activity-dot{width:10px;height:10px;border-radius:50%;background-color:var(--accent)}.activity-details{display:flex;flex-direction:column}.activity-text{font-size:.875rem;color:var(--text-main)}.activity-time{font-size:.75rem;color:var(--text-muted)}.actions-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-md)}.action-btn{background-color:var(--bg-body);border:1px solid var(--border);padding:var(--spacing-md);border-radius:var(--radius-md);font-weight:500;color:var(--text-main);transition:var(--transition-fast)}.action-btn:hover{background-color:var(--primary);color:#fff;border-color:var(--primary)}.pill-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:var(--spacing-md)}.pill{display:inline-flex;align-items:center;justify-content:space-between;gap:var(--spacing-sm);padding:.75rem 1rem;border-radius:999px;border:1px solid var(--border);background-color:var(--bg-body);color:var(--text-main);font-weight:600;transition:var(--transition-fast)}.pill:hover{background-color:#0000000d}.pill-selected{background-color:#16794a;color:#fff;border-color:#16794a}.pill-actions{display:inline-flex;gap:6px;margin-left:8px}.add-pill{background-color:#16794a1a;color:#16794a;border-color:#16794a33}.icon-btn{display:inline-flex;align-items:center;justify-content:center;padding:6px;border-radius:var(--radius-md);border:1px solid var(--border);background-color:var(--bg-card);color:var(--text-main)}.icon-btn.delete-btn{color:#dc2626;border-color:#ef44444d;background-color:#ef44440d}.form-inline{display:flex;gap:var(--spacing-md);flex-wrap:wrap}.search-input{width:100%;padding:.6rem .75rem;border:1px solid var(--border);border-radius:var(--radius-md);background-color:var(--bg-body);color:var(--text-main);transition:var(--transition-fast);font-size:.95rem;line-height:1.25rem}.search-input:hover{border-color:#cbd5e1;background-color:#f8fafc}.search-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #4f46e526;background-color:#fff}.search-input::placeholder{color:var(--text-muted)}.search-input:disabled{opacity:.7;cursor:not-allowed;background-color:#eef2f7;color:var(--text-muted)}select.search-input{appearance:none;-webkit-appearance:none;-moz-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .75rem center;background-size:16px 16px;padding-right:2rem}.db-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;padding:20px}.subject-card{border-radius:20px;padding:20px;height:160px;position:relative;overflow:hidden;color:#fff;cursor:pointer;box-shadow:0 4px 15px #0000001a;transition:transform .2s ease,box-shadow .2s ease}.subject-card:hover{transform:translateY(-5px);box-shadow:0 8px 25px #00000026}.subject-icon{position:absolute;right:-10px;bottom:-20px;font-size:120px;opacity:.2;z-index:0}.subject-info{position:relative;z-index:1;height:100%;display:flex;flex-direction:column}.subject-info h3{font-size:24px;font-weight:700;margin:0 0 5px;line-height:1.2;text-shadow:0 2px 4px rgba(0,0,0,.1)}.exam-tag{margin-top:auto;background:#fff3;align-self:flex-start;padding:5px 12px;border-radius:15px;font-size:13px;font-weight:600;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.add-btn{background-color:var(--primary, #4F46E5);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:var(--radius-md, 8px);font-weight:600;cursor:pointer;transition:background-color .2s ease,transform .1s ease}.add-btn:hover{background-color:#4338ca;transform:translateY(-1px)}.add-btn:active{transform:translateY(0)}.add-btn:disabled{background-color:#9ca3af;cursor:not-allowed;transform:none}.table-container{overflow-x:auto}.users-table{width:100%;border-collapse:collapse;margin-top:1rem}.users-table th,.users-table td{padding:12px 15px;text-align:left;border-bottom:1px solid #eee}.users-table th{background-color:#f8f9fa;color:#444;font-weight:600}.users-table tr:hover{background-color:#f9f9f9}.login-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px}.login-box{background:#fff;border-radius:12px;box-shadow:0 10px 40px #0003;padding:40px;width:100%;max-width:400px}.login-title{font-size:28px;font-weight:700;color:#333;margin:0 0 8px;text-align:center}.login-subtitle{font-size:14px;color:#666;margin:0 0 32px;text-align:center}.login-form{display:flex;flex-direction:column;gap:20px}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-size:14px;font-weight:600;color:#333}.form-group input{padding:12px 16px;border:1px solid #ddd;border-radius:8px;font-size:14px;transition:all .3s ease}.form-group input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.error-message{background-color:#fee;color:#c33;padding:12px;border-radius:8px;font-size:14px;text-align:center;border:1px solid #fcc}.login-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:14px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease}.login-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #667eea66}.login-button:active{transform:translateY(0)}.reports-container{padding:24px;background-color:#f8fafc;min-height:100vh}.reports-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.reports-header h1{font-size:24px;font-weight:700;color:#1e293b;margin:0}.reports-filters{display:flex;gap:12px}.filter-btn{padding:8px 16px;border:1px solid #e2e8f0;border-radius:8px;background:#fff;color:#64748b;font-weight:500;cursor:pointer;transition:all .2s}.filter-btn.active{background:#2563eb;color:#fff;border-color:#2563eb}.reports-table-container{background:#fff;border-radius:12px;box-shadow:0 1px 3px #0000001a;overflow:hidden}.reports-table{width:100%;border-collapse:collapse}.reports-table th,.reports-table td{padding:16px;text-align:left;border-bottom:1px solid #f1f5f9}.reports-table th{background-color:#f8fafc;font-weight:600;color:#475569;font-size:14px;text-transform:uppercase}.reports-table td{color:#1e293b;font-size:14px}.status-badge{padding:4px 12px;border-radius:9999px;font-size:12px;font-weight:600;display:inline-block}.status-pending{background-color:#fef3c7;color:#d97706}.status-resolved{background-color:#dcfce3;color:#16a34a}.action-btn{padding:6px 12px;background-color:#eff6ff;color:#2563eb;border:none;border-radius:6px;font-weight:500;cursor:pointer;transition:background-color .2s}.action-btn:hover{background-color:#dbeafe}.modal-overlay{position:fixed;inset:0;background-color:#0f172a80;display:flex;justify-content:center;align-items:center;z-index:1000}.modal-content{background:#fff;border-radius:16px;width:90%;max-width:600px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 25px -5px #0000001a}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;border-bottom:1px solid #f1f5f9}.modal-header h2{margin:0;font-size:20px;color:#1e293b}.close-btn{background:none;border:none;color:#64748b;cursor:pointer;padding:4px}.close-btn:hover{color:#0f172a}.modal-body{padding:24px}.info-group{margin-bottom:20px}.info-label{display:block;font-size:13px;color:#64748b;margin-bottom:6px;text-transform:uppercase;font-weight:600}.info-value{font-size:15px;color:#1e293b;background:#f8fafc;padding:12px;border-radius:8px;border:1px solid #e2e8f0}.form-group{margin-bottom:16px}.form-control{width:100%;padding:10px 12px;border:1px solid #cbd5e1;border-radius:6px;font-size:15px;font-family:inherit;transition:border-color .2s}.form-control:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61a}textarea.form-control{min-height:100px;resize:vertical}.modal-footer{padding:20px 24px;border-top:1px solid #f1f5f9;display:flex;justify-content:flex-end;gap:12px;background:#f8fafc;border-bottom-left-radius:16px;border-bottom-right-radius:16px}.btn{padding:10px 20px;border-radius:8px;font-weight:600;cursor:pointer;border:none;transition:all .2s}.btn-secondary{background-color:#e2e8f0;color:#475569}.btn-secondary:hover{background-color:#cbd5e1}.btn-primary{background-color:#2563eb;color:#fff}.btn-primary:hover{background-color:#1d4ed8}.btn-success{background-color:#16a34a;color:#fff}.btn-success:hover{background-color:#15803d}.options-list{display:flex;flex-direction:column;gap:8px;margin-top:8px}.option-edit-row{display:flex;align-items:center;gap:12px}.option-edit-row .form-control{flex:1}.radio-label{display:flex;align-items:center;gap:6px;font-size:14px;color:#475569;cursor:pointer}:root{--primary: #4F46E5;--primary-hover: #4338CA;--secondary: #64748B;--accent: #06B6D4;--bg-body: #F1F5F9;--bg-card: #FFFFFF;--bg-sidebar: #1E293B;--text-main: #0F172A;--text-muted: #64748B;--text-light: #F8FAFC;--border: #E2E8F0;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: 1rem;--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-fast: .15s ease-in-out;--transition-normal: .3s ease-in-out}.dark{--bg-body: #0F172A;--bg-card: #1E293B;--bg-sidebar: #020617;--text-main: #F8FAFC;--text-muted: #94A3B8;--border: #334155}*,*:before,*:after{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}a{text-decoration:none;color:inherit}button{cursor:pointer;border:none;background:none;font-family:inherit}.icon{width:1.25rem;height:1.25rem;stroke-width:2}