:root{--bg:#0b1117;--bg-subtle:#0f1923;--surface:#151f2b;--surface-hover:#1a2736;--surface-active:#1f2f3f;--border:#94bfe01a;--border-hover:#94bfe02e;--border-focus:#38bdf866;--text:#e8f1f8;--text-secondary:#8ba3b8;--text-muted:#5a7389;--accent:#38bdf8;--accent-hover:#22d3ee;--accent-bg:#38bdf81a;--accent-border:#38bdf840;--success:#34d399;--success-bg:#34d3991a;--success-border:#34d39940;--warning:#fbbf24;--warning-bg:#fbbf241a;--warning-border:#fbbf2440;--danger:#f87171;--danger-bg:#f871711a;--danger-border:#f8717140;--info:#818cf8;--info-bg:#818cf81a;--info-border:#818cf840;--radius-sm:6px;--radius:10px;--radius-lg:14px;--radius-xl:18px;--shadow-sm:0 1px 2px #0003;--shadow:0 4px 12px #00000040;--shadow-lg:0 8px 30px #00000059;--sidebar-width:240px;--transition:.15s ease;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,Manrope,Segoe 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0;place-items:center;padding:0;font-family:inherit;font-size:13px;font-weight:500;display:grid}.pagination-btn:hover:not(:disabled){background:var(--surface);color:var(--text);border-color:var(--border-hover)}.pagination-btn.active{background:var(--accent-bg);color:var(--accent);border-color:var(--accent-border);font-weight:700}.pagination-btn:disabled{opacity:.35;cursor:not-allowed}.pagination-dots{text-align:center;width:34px;color:var(--text-muted);font-size:13px}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background:#0009;place-items:center;padding:20px;animation:.15s fadeIn;display:grid;position:fixed;inset:0}.modal-content{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);width:100%;max-width:560px;max-height:90vh;box-shadow:var(--shadow-lg);padding:24px;animation:.2s slideUp;overflow-y:auto}.modal-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.modal-header h3{font-size:17px;font-weight:700}.modal-close{border-radius:var(--radius-sm);width:32px;height:32px;color:var(--text-muted);cursor:pointer;transition:all var(--transition);background:0 0;border:none;place-items:center;padding:0;display:grid}.modal-close:hover{background:var(--danger-bg);color:var(--danger)}.modal-body{flex-direction:column;gap:16px;display:flex}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.alert{border-radius:var(--radius);align-items:center;gap:8px;margin-top:12px;padding:10px 14px;font-size:13px;display:flex}.alert-danger{background:var(--danger-bg);color:var(--danger);border:1px solid var(--danger-border)}.error-box{text-align:center;color:var(--text-muted);flex-direction:column;justify-content:center;align-items:center;gap:16px;padding:60px 20px;display:flex}.empty-state{text-align:center;color:var(--text-muted);flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:48px 20px;display:flex}.empty-state svg{opacity:.3}.empty-state p{font-size:14px}.skeleton-pulse{background:linear-gradient(90deg, var(--surface) 0%, var(--surface-hover) 40%, var(--surface) 80%);border-radius:var(--radius-sm);background-size:200% 100%;animation:1.5s ease-in-out infinite shimmer}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.skeleton-table{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);flex-direction:column;gap:8px;padding:20px;display:flex}.skeleton-row{gap:12px;display:flex}.skeleton-header .skeleton-cell{opacity:.5;height:12px}.skeleton-cell{flex:1;height:16px}.skeleton-cards{grid-template-columns:repeat(4,1fr);gap:14px;display:grid}.skeleton-card{border-radius:var(--radius-lg);height:88px}.text-success{color:var(--success)}.text-warning{color:var(--warning)}.text-danger{color:var(--danger)}.text-muted{color:var(--text-muted)}.page-toolbar{justify-content:space-between;align-items:center;gap:12px;display:flex}.page-toolbar-info{font-size:13px}.attendance-toolbar{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:16px;display:flex}.date-range{flex-wrap:wrap;gap:12px;display:flex}@media (width<=1024px){.stat-grid-4,.form-grid,.skeleton-cards{grid-template-columns:repeat(2,1fr)}}@media (width<=768px){.app-layout{grid-template-columns:1fr;padding-bottom:70px}.sidebar{display:none}.mobile-topbar{background:var(--bg-subtle);border-bottom:1px solid var(--border);z-index:90;align-items:center;gap:10px;padding:12px 16px;display:flex;position:sticky;top:0}.mobile-title{flex:1;font-size:16px;font-weight:700}.mobile-nav{background:var(--bg-subtle);border-top:1px solid var(--border);z-index:90;justify-content:space-around;gap:2px;padding:6px 8px;display:flex;position:fixed;bottom:0;left:0;right:0}.mobile-nav-item{border-radius:var(--radius-sm);color:var(--text-muted);cursor:pointer;transition:all var(--transition);background:0 0;border:none;flex-direction:column;flex:1;align-items:center;gap:3px;max-width:80px;padding:6px 8px;font-family:inherit;font-size:10px;font-weight:500;display:flex}.mobile-nav-item.active{color:var(--accent)}.main-content{grid-column:1;padding:20px 16px 32px}.page-header h1{margin-bottom:16px;font-size:20px}.stat-grid-4,.stat-grid-3{grid-template-columns:repeat(2,1fr)}.stat-card{padding:14px 12px}.stat-card-icon{width:36px;height:36px}.stat-card-value{font-size:22px}.form-grid{grid-template-columns:1fr}.panel{border-radius:var(--radius);padding:16px}.table-wrap{display:none}.mobile-cards{display:block}.attendance-toolbar{flex-direction:column;align-items:stretch}.date-range{flex-direction:column}.page-toolbar{flex-direction:column;align-items:stretch;gap:10px}.page-toolbar .btn{width:100%}.pagination{flex-direction:column;align-items:center;gap:12px}.skeleton-cards{grid-template-columns:repeat(2,1fr)}.modal-content{border-radius:var(--radius-lg);max-width:100%;padding:20px}}@media (width<=400px){.stat-card{flex-direction:column;gap:8px}.stat-card-icon{width:32px;height:32px}.stat-card-value{font-size:20px}.stat-card-label{font-size:11.5px}}