:root{--primary-color:#5856d6;--primary-hover:#4341b5;--secondary-color:#e5e5ea;--success-color:#34c759;--success-hover:#28a745;--warning-color:#ff9500;--danger-color:#ff3b30;--danger-bg:#ffeef0;--background:#f2f2f7;--sidebar-bg:#fff;--card-bg:#fff;--text-primary:#1c1c1e;--text-secondary:#8e8e93;--border-color:#e5e5ea;--font-sans:"Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--shadow-sm:0 2px 8px #0000000a;--shadow-md:0 4px 20px #00000014}*{box-sizing:border-box;margin:0;padding:0}html,body{font-family:var(--font-sans);color:var(--text-primary);-webkit-tap-highlight-color:transparent;width:100vw;height:100dvh;overflow:hidden;background-color:var(--background)!important}.app-container{width:100vw;height:100dvh;display:flex}.sidebar{background-color:var(--sidebar-bg);border-right:1px solid var(--border-color);flex-direction:column;flex-shrink:0;width:260px;padding:24px;display:flex}.brand{align-items:center;gap:12px;margin-bottom:40px;display:flex}.brand .logo-icon{color:#fff;background:linear-gradient(135deg,#a2a1ff,#5856d6);border-radius:12px;padding:6px;font-size:28px}.brand h2{color:var(--primary-color);font-size:20px;font-weight:700}.nav-menu{flex-direction:column;flex-grow:1;gap:8px;display:flex}.nav-item{color:var(--text-secondary);border-radius:12px;align-items:center;gap:12px;padding:12px 16px;font-size:15px;font-weight:500;text-decoration:none;transition:all .2s;display:flex}.nav-item:hover,.nav-item.active{color:var(--primary-color);background-color:#f2f2f7}.nav-item.active{background-color:#efefff;font-weight:600}.sidebar-footer{border-top:1px solid var(--border-color);padding-top:16px}.docente-info-card{background-color:#f8f8fa;border-radius:12px;padding:12px}.docente-name{white-space:nowrap;text-overflow:ellipsis;font-size:14px;font-weight:600;overflow:hidden}.institucion-name{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;margin-top:2px;font-size:11px;overflow:hidden}.main-content{flex-direction:column;flex-grow:1;min-width:0;max-width:100%;height:100%;padding:40px;display:flex;position:relative;overflow-y:auto}.panel{flex-direction:column;gap:32px;animation:.3s fadeIn;display:none}.panel.active{display:flex}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.panel-header{justify-content:space-between;align-items:center;display:flex}.panel-header 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0;border:none;margin-bottom:8px;font-size:14px;font-weight:600}.btn-block{justify-content:center;width:100%}.grupos-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;display:grid}.grupo-card{background-color:var(--card-bg);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);border-radius:12px;flex-direction:column;gap:8px;padding:14px 16px;transition:all .15s;display:flex;position:relative;overflow:hidden}.grupo-card:before{content:"";background-color:var(--primary-color);width:6px;height:100%;position:absolute;top:0;left:0}.grupo-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}.grupo-card h3{font-size:18px;font-weight:700}.grupo-card .curso-tag{color:var(--text-secondary);background-color:#f2f2f7;border-radius:20px;align-self:flex-start;padding:4px 12px;font-size:12px;font-weight:600}.grupo-card .meta{color:var(--text-secondary);font-size:13px}.grupo-card 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var(--border-color);box-shadow:var(--shadow-sm);border-radius:20px;flex-direction:column;display:flex;overflow:hidden}.table-responsive{max-height:calc(100vh - 350px);overflow-x:auto}.table-notas{border-collapse:collapse;width:100%;font-size:13px}.table-notas th{color:var(--text-secondary);border-bottom:1px solid var(--border-color);border-right:1px solid var(--border-color);text-align:center;white-space:nowrap;background-color:#f8f8fa;padding:10px 8px;font-weight:600}.table-notas td{border-bottom:1px solid var(--border-color);border-right:1px solid var(--border-color);text-align:center;white-space:nowrap;padding:6px 8px}.table-notas td.student-name,.table-notas th.student-name{text-align:left;background-color:var(--card-bg);z-index:2;border-right:2px solid var(--border-color);font-weight:600;position:sticky;left:0}.table-notas tr:hover td.student-name{background-color:#f8f8fa}.input-nota{border:1px solid 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.2s}.auth-tab-btn.active{color:var(--primary-color);border-bottom:3px solid var(--primary-color);margin-bottom:-2px}.auth-form,.activation-form{flex-direction:column;gap:16px;display:flex}.auth-form .btn,.activation-form .btn{margin-top:8px;padding:12px}.activation-info{color:var(--text-primary);text-align:center;border-left:4px solid var(--warning-color);background-color:#f2f2f7;border-radius:12px;padding:16px;font-size:13px;line-height:1.5}.admin-grid{grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:32px;display:grid}.admin-list-container{border:1px solid var(--border-color);-webkit-overflow-scrolling:touch;background:#f8f8fa;border-radius:12px;max-height:350px;margin-top:12px;overflow:auto}.admin-table{border-collapse:collapse;text-align:left;width:100%;font-size:13px}.admin-table th,.admin-table td{border-bottom:1px solid var(--border-color);white-space:nowrap;padding:12px 14px}.admin-table 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env(safe-area-inset-right,0px))!important;min-width:0!important;max-width:100%!important;height:100%!important;overflow-y:auto!important}.form-row{flex-direction:column;gap:16px}.panel-header{flex-direction:column;align-items:flex-start;gap:16px}.panel-header .action-buttons{flex-wrap:wrap;gap:8px;width:100%;display:flex}.panel-header .action-buttons .btn{flex:calc(50% - 8px);justify-content:center;padding:12px;font-size:13px}.tabs-container{white-space:nowrap;-webkit-overflow-scrolling:touch;padding-bottom:4px;overflow-x:auto}.tab-btn{flex-shrink:0;padding:8px 12px;font-size:13px}.table-responsive{max-height:none!important;overflow:auto visible!important}.config-grid,.admin-grid{grid-template-columns:1fr;gap:16px}.grupos-grid{gap:16px;grid-template-columns:1fr!important}.grupo-card{border-radius:16px!important;gap:10px!important;padding:16px!important}.grupo-card h3{font-size:15px!important}.grupo-card .meta{font-size:12px!important}.grupo-card 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