:root{--primary:#6366f1;--primary-light:#e0e7ff;--primary-dark:#4f46e5;--primary-glow:#6366f126;--bg-app:#f8fafc;--bg-card:#fff;--bg-sidebar:#0f172a;--bg-sidebar-hover:#1e293b;--bg-sidebar-active:#4f46e5;--text-main:#0f172a;--text-muted:#64748b;--text-sidebar:#94a3b8;--text-sidebar-active:#fff;--border-color:#f1f5f9;--border-card:#e2e8f0;--success:#10b981;--success-light:#d1fae5;--success-text:#065f46;--warning:#f59e0b;--warning-light:#fef3c7;--warning-text:#92400e;--danger:#ef4444;--danger-light:#fee2e2;--danger-text:#991b1b;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000000d, 0 2px 4px -1px #00000008;--shadow-lg:0 10px 15px -3px #0000000d, 0 4px 6px -2px #00000008;--font-heading:"Outfit", sans-serif;--font-body:"Inter", sans-serif;--sidebar-width:260px;--radius-sm:6px;--radius-md:12px;--radius-lg:18px}[data-theme=dark]{--bg-app:#0b0f19;--bg-card:#131b2e;--text-main:#f8fafc;--text-muted:#94a3b8;--border-color:#1e293b;--border-card:#1e293b;--bg-sidebar:#080c14;--bg-sidebar-hover:#131b2e;--text-sidebar:#64748b}[data-theme=dark] .session-item{background-color:#1e293b;border-color:#334155}[data-theme=dark] .session-time{background-color:#0b0f19;border-color:#1e293b}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);background-color:var(--bg-app);color:var(--text-main);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.5}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);color:var(--text-main);font-weight:600}button,input,select,textarea{font-family:inherit;font-size:inherit}.app-container{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-width);background-color:var(--bg-sidebar);color:var(--text-sidebar);z-index:100;border-right:1px solid #ffffff0d;flex-direction:column;transition:transform .3s;display:flex;position:fixed;top:0;bottom:0;left:0}.sidebar-brand{border-bottom:1px solid #ffffff0d;align-items:center;gap:12px;padding:24px;display:flex}.sidebar-brand h2{color:#fff;font-size:1.15rem;font-family:var(--font-heading);font-weight:700;line-height:1.2}.sidebar-brand svg{color:var(--primary);flex-shrink:0}.sidebar-menu{flex-grow:1;padding:16px 12px;list-style:none;overflow-y:auto}.sidebar-item{margin-bottom:4px}.sidebar-link{color:var(--text-sidebar);border-radius:var(--radius-md);cursor:pointer;align-items:center;gap:12px;padding:12px 16px;font-size:.925rem;font-weight:500;text-decoration:none;transition:all .2s;display:flex}.sidebar-link:hover{background-color:var(--bg-sidebar-hover);color:#fff}.sidebar-link.active{background-color:var(--bg-sidebar-active);color:var(--text-sidebar-active);box-shadow:0 4px 12px #6366f159}.sidebar-link svg{width:20px;height:20px}.sidebar-toggle,.sidebar-close-btn{display:none!important}.sidebar-overlay{display:none}.main-content{margin-left:var(--sidebar-width);flex-direction:column;flex-grow:1;min-height:100vh;padding:32px 40px;display:flex}.content-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.content-header h1{letter-spacing:-.02em;font-size:1.75rem;font-weight:700}.header-actions{align-items:center;gap:16px;display:flex}.icon-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:8px;transition:all .2s;display:flex}.icon-btn:hover{background-color:var(--border-color);color:var(--text-main)}.user-profile{border-left:1px solid var(--border-card);align-items:center;gap:10px;padding-left:16px;display:flex}.avatar{background-color:var(--primary-light);width:36px;height:36px;color:var(--primary);border-radius:50%;justify-content:center;align-items:center;font-size:.95rem;font-weight:600;display:flex}.metrics-grid{grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:28px;display:grid}.metric-card{background-color:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);flex-direction:column;gap:12px;padding:24px;display:flex;position:relative;overflow:hidden}.metric-card-header{align-items:center;gap:12px;display:flex}.metric-icon-wrapper{border-radius:var(--radius-md);justify-content:center;align-items:center;width:40px;height:40px;display:flex}.metric-icon-wrapper.purple{color:#8b5cf6;background-color:#f5f3ff}.metric-icon-wrapper.blue{color:#3b82f6;background-color:#eff6ff}.metric-icon-wrapper.green{color:#10b981;background-color:#ecfdf5}.metric-icon-wrapper.orange{color:#f59e0b;background-color:#fffbeb}.metric-label{color:var(--text-muted);font-size:.825rem;font-weight:600}.metric-value{font-family:var(--font-heading);color:var(--text-main);font-size:1.625rem;font-weight:700}.metric-footer{color:var(--text-muted);font-size:.775rem;font-weight:500}.progress-bar-container{background-color:var(--border-color);border-radius:3px;width:100%;height:6px;margin-top:4px;overflow:hidden}.progress-bar-fill{background-color:var(--primary);border-radius:3px;height:100%;transition:width .4s}.dashboard-middle-grid{grid-template-columns:1.2fr 1fr 1.2fr;gap:20px;margin-bottom:28px;display:grid}.dashboard-bottom-grid{grid-template-columns:1fr 1.3fr;gap:20px;margin-bottom:28px;display:grid}.dashboard-card{background-color:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);flex-direction:column;padding:24px;display:flex}.card-title-bar{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.card-title-bar h3{font-size:1.1rem;font-family:var(--font-heading);color:var(--text-main);align-items:center;gap:8px;display:flex}.card-title-bar h3 svg{color:var(--primary);width:18px;height:18px}.card-link{color:var(--primary);font-size:.8rem;font-weight:600;text-decoration:none;transition:opacity .2s}.card-link:hover{opacity:.8;text-decoration:underline}.session-list{flex-direction:column;gap:12px;display:flex}.session-item{border-radius:var(--radius-md);background-color:#f8fafc;border:1px solid #f1f5f9;justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.session-time{color:var(--text-muted);border-radius:var(--radius-sm);background-color:#fff;border:1px solid #e2e8f0;padding:4px 8px;font-size:.8rem;font-weight:600}.session-info{flex-grow:1;margin-left:16px}.session-subject{color:var(--text-main);font-size:.875rem;font-weight:600}.session-badge{border-radius:var(--radius-sm);padding:4px 8px;font-size:.725rem;font-weight:600}.session-badge.success{background-color:var(--success-light);color:var(--success-text)}.session-badge.warning{background-color:var(--warning-light);color:var(--warning-text)}.session-badge.info{background-color:var(--primary-light);color:var(--primary-dark)}.revision-item{border-bottom:1px solid var(--border-color);align-items:center;gap:12px;padding:12px;display:flex}.revision-item:last-child{border-bottom:none}.revision-icon{color:#8b5cf6;border-radius:var(--radius-sm);background-color:#f5f3ff;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;display:flex}.revision-details{flex-grow:1}.revision-subject{color:var(--text-main);font-size:.85rem;font-weight:600}.revision-topic{color:var(--text-muted);font-size:.75rem}.revision-date{color:var(--text-muted);align-items:center;gap:4px;font-size:.725rem;display:flex}.discipline-progress-list{flex-direction:column;gap:14px;display:flex}.discipline-progress-item{flex-direction:column;gap:6px;display:flex}.discipline-progress-header{justify-content:space-between;font-size:.825rem;font-weight:600;display:flex}.discipline-progress-name{color:var(--text-main);align-items:center;gap:8px;display:flex}.discipline-dot{border-radius:50%;width:8px;height:8px;display:inline-block}.discipline-progress-percent{color:var(--text-muted)}.discipline-progress-bar{background-color:var(--border-color);border-radius:4px;width:100%;height:8px;overflow:hidden}.discipline-progress-fill{border-radius:4px;height:100%}.quick-actions-row{grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:28px;display:grid}.quick-action-card{background-color:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);cursor:pointer;justify-content:space-between;align-items:center;padding:20px 24px;text-decoration:none;transition:all .2s;display:flex}.quick-action-card:hover{box-shadow:var(--shadow-md);border-color:var(--primary);transform:translateY(-2px)}.quick-action-content{align-items:center;gap:16px;display:flex}.quick-action-icon{background-color:var(--primary-light);width:44px;height:44px;color:var(--primary);border-radius:var(--radius-md);justify-content:center;align-items:center;display:flex}.quick-action-text h4{font-size:.95rem;font-weight:600}.quick-action-text p{color:var(--text-muted);font-size:.775rem}.quick-action-arrow{color:var(--text-muted)}.quick-action-card:hover .quick-action-arrow{color:var(--primary)}.page-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.btn{border-radius:var(--radius-md);cursor:pointer;border:none;justify-content:center;align-items:center;gap:8px;padding:10px 18px;font-size:.875rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--primary);color:#fff;box-shadow:0 4px 10px #6366f140}.btn-primary:hover{background-color:var(--primary-dark)}.btn-secondary{background-color:var(--border-color);color:var(--text-main);border:1px solid var(--border-card)}.btn-secondary:hover{background-color:var(--border-card)}.btn-danger{background-color:var(--danger);color:#fff}.btn-danger:hover{background-color:#dc2626}.form-card{background-color:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);max-width:600px;padding:28px}.form-grid{grid-template-columns:1fr;gap:16px;margin-bottom:24px;display:grid}.form-grid.two-cols{grid-template-columns:1fr 1fr}.form-group{flex-direction:column;gap:6px;display:flex}.form-group label{color:var(--text-muted);font-size:.825rem;font-weight:600}.form-control{border-radius:var(--radius-md);border:1px solid var(--border-card);background-color:var(--bg-card);color:var(--text-main);outline:none;padding:10px 14px;font-size:.875rem;transition:all .2s}.form-control option{background-color:var(--bg-card);color:var(--text-main)}.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}textarea.form-control{resize:vertical;min-height:100px}.form-actions{justify-content:flex-end;gap:12px;display:flex}.table-card{background-color:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);overflow:hidden}.table-responsive{width:100%;overflow-x:auto}.data-table{border-collapse:collapse;text-align:left;width:100%}.data-table th{background-color:var(--bg-app);text-transform:uppercase;color:var(--text-muted);border-bottom:1px solid var(--border-color);letter-spacing:.05em;padding:16px 20px;font-size:.775rem;font-weight:700}.data-table td{color:var(--text-main);border-bottom:1px solid var(--border-color);vertical-align:middle;padding:16px 20px;font-size:.875rem}.data-table tr:last-child td{border-bottom:none}.data-table tr:hover td{background-color:var(--border-color)}.actions-cell{gap:8px;display:flex}.btn-icon{border-radius:var(--radius-sm);cursor:pointer;color:var(--text-muted);background:0 0;border:none;justify-content:center;align-items:center;padding:6px;transition:all .2s;display:flex}.btn-icon:hover{background-color:var(--border-color)}.btn-icon.edit:hover{color:var(--primary)}.btn-icon.delete:hover{color:var(--danger)}.login-wrapper{background:radial-gradient(circle at 10% 20%,#6366f1 0%,#8b5cf6 90%);justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.login-card{background-color:var(--bg-card);border-radius:var(--radius-lg);flex-direction:column;gap:24px;width:100%;max-width:440px;padding:40px;display:flex;box-shadow:0 10px 25px #00000026}.login-header{text-align:center;flex-direction:column;align-items:center;gap:12px;display:flex}.login-logo{background-color:var(--primary-light);width:52px;height:52px;color:var(--primary);border-radius:var(--radius-md);justify-content:center;align-items:center;display:flex}.login-header h2{font-size:1.5rem;font-family:var(--font-heading);font-weight:800}.login-header p{color:var(--text-muted);font-size:.85rem}.login-form{flex-direction:column;gap:18px;display:flex}.error-alert{background-color:var(--danger-light);color:var(--danger-text);border-radius:var(--radius-md);border:1px solid #fee2e2;padding:12px;font-size:.8rem;font-weight:500}.chart-container{justify-content:center;align-items:center;height:200px;display:flex;position:relative}.chart-center-label{text-align:center;flex-direction:column;justify-content:center;display:flex;position:absolute}.chart-center-value{font-family:var(--font-heading);color:var(--text-main);font-size:1.35rem;font-weight:700}.chart-center-text{color:var(--text-muted);font-size:.725rem;font-weight:500}@media (width<=992px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-toggle{cursor:pointer;color:var(--text-color);background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;padding:8px;display:flex!important}.sidebar-toggle:hover{background-color:var(--bg-card)}.sidebar-close-btn{color:var(--text-sidebar);cursor:pointer;background:0 0;border:none;border-radius:4px;justify-content:center;align-items:center;padding:4px;display:flex!important}.sidebar-close-btn:hover{background-color:var(--bg-sidebar-hover);color:#fff}.sidebar-overlay{z-index:90;background-color:#00000080;display:block;position:fixed;inset:0}.main-content{margin-left:0;padding:20px}.metrics-grid{grid-template-columns:repeat(2,1fr)}.dashboard-middle-grid,.dashboard-bottom-grid,.quick-actions-row{grid-template-columns:1fr}}@media (width<=576px){.metrics-grid,.form-grid.two-cols{grid-template-columns:1fr}.login-card{padding:24px 16px}}