@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg-primary:#f0f4f8;--bg-secondary:#fff;--bg-elevated:#e8eef6;--bg-sidebar:#0d1f45;--bg-topbar:#0d1f45;--text-primary:#0d1f45;--text-secondary:#4a6080;--text-muted:#8fa5c0;--text-on-dark:#f0f4ff;--text-on-dark-muted:#8fa8d0;--accent-blue:#1d4ed8;--accent-blue-hover:#1e40af;--accent-blue-light:#1d4ed81a;--accent-blue-mid:#1d4ed82e;--status-success:#059669;--status-warning:#d97706;--status-danger:#dc2626;--status-info:#2563eb;--heatmap-emerald:#059669;--heatmap-amber:#d97706;--heatmap-crimson:#dc2626;--border-color:#d1ddef;--border-subtle:#e4ecf5;--font-main:"Inter", "Roboto", sans-serif;--transition-fast:.15s ease-in-out;--shadow-sm:0 1px 3px #0d1f4514, 0 1px 2px #0d1f450d;--shadow-md:0 4px 12px #0d1f451f;--shadow-lg:0 20px 40px #0d1f452e}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.5;overflow-x:hidden}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:#c3d0e4;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--accent-blue)}.glass-panel{background:var(--bg-secondary);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);border-radius:10px;padding:24px}.hover-lift{transition:transform var(--transition-fast), box-shadow var(--transition-fast)}.hover-lift:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.animate-fade-in{animation:.35s ease-out forwards fadeIn}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.dashboard-layout{height:100vh;display:flex}.sidebar{background:var(--bg-sidebar);z-index:10;flex-direction:column;flex-shrink:0;width:256px;display:flex;overflow-y:auto}.sidebar-logo{border-bottom:1px solid #ffffff1a;justify-content:space-between;align-items:center;min-height:70px;margin-bottom:8px;padding:18px 20px 16px;display:flex}.sidebar-logo .pulse-dot{background:#60a5fa;border-radius:50%;flex-shrink:0;width:9px;height:9px;animation:2s infinite pulse;box-shadow:0 0 8px #60a5fa}@keyframes pulse{0%{box-shadow:0 0 #60a5fab3}70%{box-shadow:0 0 0 7px #60a5fa00}to{box-shadow:0 0 #60a5fa00}}.sidebar-section-label{text-transform:uppercase;letter-spacing:.1em;color:#ffffff59;padding:14px 20px 5px;font-size:.62rem;font-weight:600}.nav-item{color:#fff9;cursor:pointer;transition:all var(--transition-fast);border-left:3px solid #0000;align-items:center;gap:10px;padding:10px 20px;font-size:.875rem;font-weight:500;display:flex}.nav-item:hover{color:#fff;background:#ffffff12}.nav-item.active{color:#fff;background:#60a5fa26;border-left-color:#60a5fa}.main-content{flex-direction:column;flex:1;min-width:0;display:flex;overflow:hidden}.topbar{background:var(--bg-topbar);z-index:5;border-bottom:1px solid #ffffff14;flex-shrink:0;justify-content:space-between;align-items:center;height:62px;padding:0 28px;display:flex}.topbar-title{color:#fff;font-size:1rem;font-weight:600}.topbar-actions{align-items:center;gap:14px;display:flex}.icon-button{color:#fff9;cursor:pointer;transition:color var(--transition-fast);background:0 0;border:none;justify-content:center;align-items:center;padding:4px;display:flex}.icon-button:hover{color:#fff}.profile-avatar{color:#fff;cursor:pointer;background:#1d4ed8;border:2px solid #fff3;border-radius:50%;justify-content:center;align-items:center;width:34px;height:34px;font-size:.8rem;font-weight:700;display:flex}.content-area{background:var(--bg-primary);flex:1;padding:28px;overflow-y:auto}.metrics-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-bottom:24px;display:grid}.metric-card{flex-direction:column;gap:8px;display:flex}.metric-header{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;justify-content:space-between;align-items:center;font-size:.78rem;font-weight:600;display:flex}.metric-value{letter-spacing:-1px;color:var(--text-primary);font-size:2.25rem;font-weight:700}.metric-trend{align-items:center;gap:6px;font-size:.78rem;font-weight:500;display:flex}.trend-up{color:var(--status-success)}.trend-down{color:var(--status-danger)}.dashboard-row{grid-template-columns:2fr 1fr;gap:18px;display:grid}.chart-container{width:100%;height:280px}.section-title{color:var(--text-primary);text-transform:uppercase;letter-spacing:.04em;margin-bottom:16px;font-size:.95rem;font-weight:700}.alert-list{flex-direction:column;gap:10px;display:flex}.alert-item{background:var(--bg-secondary);border:1px solid var(--border-color);border-left:4px solid var(--accent-blue);border-radius:8px;align-items:flex-start;gap:12px;padding:13px 14px;display:flex}.alert-item.critical{border-left-color:var(--status-danger)}.alert-item.warning{border-left-color:var(--status-warning)}.alert-item.critical .alert-icon{color:var(--status-danger)}.alert-item.warning .alert-icon{color:var(--status-warning)}.alert-icon{color:var(--accent-blue);flex-shrink:0;margin-top:2px}.alert-content{flex:1}.alert-content h4{color:var(--text-primary);margin-bottom:3px;font-size:.85rem;font-weight:600}.alert-content p{color:var(--text-secondary);font-size:.75rem}.alert-time{color:var(--text-muted);white-space:nowrap;font-size:.7rem}.teacher-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;margin-bottom:22px;display:flex}.teacher-info h2{color:var(--text-primary);margin-bottom:3px;font-size:1.4rem;font-weight:700}.teacher-info p{color:var(--text-secondary);font-size:.85rem}.class-selector{align-items:center;gap:10px;display:flex}select.premium-select{background:var(--bg-secondary);color:var(--text-primary);border:1.5px solid var(--border-color);font-family:var(--font-main);cursor:pointer;appearance:none;min-width:200px;transition:border-color var(--transition-fast);border-radius:7px;outline:none;padding:9px 14px;font-size:.875rem}select.premium-select:focus{border-color:var(--accent-blue)}select.premium-select option{color:var(--text-primary);background:#fff}.action-button{background:var(--accent-blue);color:#fff;cursor:pointer;transition:all var(--transition-fast);border:none;border-radius:7px;align-items:center;gap:8px;padding:9px 18px;font-size:.875rem;font-weight:600;display:flex}.action-button:hover{background:var(--accent-blue-hover);transform:translateY(-1px);box-shadow:0 4px 12px #1d4ed84d}.secondary-button{background:var(--bg-secondary);color:var(--text-primary);border:1.5px solid var(--border-color);cursor:pointer;transition:all var(--transition-fast);border-radius:7px;align-items:center;gap:6px;padding:7px 14px;font-size:.8rem;font-weight:500;display:flex}.secondary-button:hover{border-color:var(--accent-blue);color:var(--accent-blue);background:var(--accent-blue-light)}.primary-button{background:var(--accent-blue);color:#fff;cursor:pointer;transition:all var(--transition-fast);border:none;border-radius:7px;align-items:center;gap:8px;padding:9px 18px;font-size:.875rem;font-weight:600;display:flex}.primary-button:hover{background:var(--accent-blue-hover)}.mark-input{background:var(--bg-secondary);border:1.5px solid var(--border-color);color:var(--text-primary);width:70px;font-family:var(--font-main);text-align:center;transition:border-color var(--transition-fast), box-shadow var(--transition-fast);border-radius:6px;outline:none;padding:8px 10px;font-size:.875rem}.mark-input:focus{border-color:var(--accent-blue);box-shadow:0 0 0 3px #1d4ed81a}.spreadsheet-container{border:1px solid var(--border-color);background:var(--bg-secondary);box-shadow:var(--shadow-sm);border-radius:10px;overflow-x:auto}.data-table{border-collapse:collapse;text-align:left;width:100%}.data-table th{text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary);border-bottom:1.5px solid var(--border-color);background:#f0f4f8;padding:12px 16px;font-size:.7rem;font-weight:700}.data-table td{border-bottom:1px solid var(--border-subtle);vertical-align:middle;color:var(--text-primary);padding:11px 16px;font-size:.875rem}.data-table tr:last-child td{border-bottom:none}.data-table tr:hover 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var(--border-color);width:100%;max-width:640px;max-height:90vh;box-shadow:var(--shadow-lg);border-radius:12px;overflow-y:auto}.report-header{border-bottom:1px solid var(--border-color);background:linear-gradient(135deg, var(--accent-blue) 0%, #1e40af 100%);border-radius:12px 12px 0 0;justify-content:space-between;align-items:flex-start;padding:20px 24px;display:flex}.school-branding h3{color:#fff;font-size:1.1rem;font-weight:700}.school-branding p{color:#ffffffbf;font-size:.78rem}.report-body{padding:24px}.student-report-info{background:var(--bg-elevated);border:1px solid var(--border-color);border-radius:8px;flex-wrap:wrap;justify-content:space-between;gap:14px;margin-bottom:20px;padding:16px;display:flex}.info-block span{color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px;font-size:.65rem;display:block}.info-block strong{color:var(--text-primary);font-size:1rem;font-weight:700}.report-table{border-collapse:collapse;width:100%;margin-bottom:18px}.report-table th{text-align:left;border-bottom:1.5px solid var(--border-color);text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);padding:9px 12px;font-size:.7rem;font-weight:700}.report-table td{border-bottom:1px solid var(--border-subtle);color:var(--text-primary);padding:10px 12px;font-size:.875rem}.velocity-warning{border-left:4px solid var(--status-warning);border:1px solid #fde68a;border-left:4px solid var(--status-warning);background:#fffbeb;border-radius:0 6px 6px 0;margin-top:14px;padding:12px 14px}.velocity-warning h4{color:var(--status-warning);align-items:center;gap:7px;margin-bottom:6px;font-size:.875rem;display:flex}.close-btn{color:#fff;cursor:pointer;transition:background var(--transition-fast);background:#fff3;border:none;border-radius:6px;padding:4px}.close-btn:hover{background:#ffffff59}.heatmap-grid{overflow-x:auto}.heatmap-table{border-collapse:separate;border-spacing:4px;width:100%}.heatmap-table th{text-transform:uppercase;color:var(--text-secondary);text-align:center;white-space:nowrap;padding:6px 8px;font-size:.68rem;font-weight:700}.heatmap-table td{text-align:center;cursor:pointer;transition:filter var(--transition-fast), transform var(--transition-fast);border-radius:6px;min-width:68px;padding:10px 6px;font-size:.75rem;font-weight:700}.heatmap-table td:hover{filter:brightness(.9);transform:scale(1.04)}.heatmap-emerald{color:#065f46;background:#d1fae5;border:1px solid #a7f3d0}.heatmap-amber{color:#92400e;background:#fef3c7;border:1px solid #fde68a}.heatmap-crimson{color:#991b1b;background:#fee2e2;border:1px solid #fca5a5}.rollcall-grid{grid-template-columns:repeat(auto-fill,minmax(155px,1fr));gap:10px;display:grid}.rollcall-card{border:1.5px solid var(--border-color);background:var(--bg-secondary);cursor:pointer;transition:all var(--transition-fast);-webkit-user-select:none;user-select:none;border-radius:8px;padding:12px}.rollcall-card:hover{border-color:var(--accent-blue);box-shadow:var(--shadow-sm)}.rollcall-card.present{background:#f0fdf4;border-color:#6ee7b7}.rollcall-card.absent{background:#fff5f5;border-color:#fca5a5}.rollcall-card.late{background:#fffbeb;border-color:#fcd34d}.rollcall-card.sick{background:#eff6ff;border-color:#93c5fd}.comment-box{background:var(--bg-elevated);border:1.5px solid var(--border-color);font-family:var(--font-main);color:var(--text-primary);resize:vertical;width:100%;min-height:70px;transition:border-color var(--transition-fast), box-shadow var(--transition-fast);border-radius:7px;outline:none;padding:12px;font-size:.875rem;line-height:1.5}.comment-box:focus{border-color:var(--accent-blue);box-shadow:0 0 0 3px #1d4ed81a}.page-header-bar{background:var(--bg-secondary);border:1px solid var(--border-color);border-left:4px solid var(--accent-blue);border-radius:10px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:22px;padding:18px 22px;display:flex}.menu-toggle{color:#ffffffb3;cursor:pointer;transition:color var(--transition-fast);background:0 0;border:none;justify-content:center;align-items:center;display:none}.menu-toggle:hover{color:#fff}.mobile-overlay{display:none}@media (width<=1024px){.dashboard-row{grid-template-columns:1fr!important}}@media (width<=768px){.menu-toggle{display:flex}.sidebar{height:100vh;transition:left .3s cubic-bezier(.4,0,.2,1);position:fixed;top:0;left:-256px}.sidebar.mobile-open{left:0;box-shadow:4px 0 24px #0d1f454d}.mobile-overlay{-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);z-index:8;background:#0d1f4573;display:block;position:fixed;inset:0}.topbar{padding:0 16px}.content-area{padding:16px}.teacher-header{flex-direction:column;align-items:flex-start}.class-selector{flex-direction:column;align-items:stretch;width:100%}.class-selector select,.class-selector button{width:100%}.topbar-actions{gap:10px}.report-modal{width:calc(100% - 32px)}.student-report-info{flex-direction:column}.metrics-grid{grid-template-columns:1fr}}