:root{--text:#000;--text-h:#000;--bg:#e0e1e9;--bg-secondary:#d5c2c2;--border:#000;--code-bg:#f4f3ec;--accent:#1e072f;--accent-bg:#aa3bff1a;--accent-border:#1c0d2780;--social-bg:#f4f3ec80;--shadow:#00000014 0 2px 8px -2px, #0000000a 0 1px 3px -1px;--shadow-hover:#0000001f 0 8px 24px -4px, #0000000f 0 4px 8px -2px;--sans:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--heading:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--mono:ui-monospace, "SF Mono", "Cascadia Code", "Consolas", monospace;--navbar-height:56px;--sidebar-width:260px;--right-panel-width:280px;font:14px/1.6 var(--sans);letter-spacing:.16px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}[data-theme=dark]{--text:#fff;--text-h:#f3f4f6;--bg:#000;--bg-secondary:#000;--border:#bbb5b5;--code-bg:#1f2028;--accent:#c084fc;--accent-bg:#c084fc26;--accent-border:#c084fc80;--social-bg:#2f303a80;--shadow:#0006 0 2px 8px -2px, #00000040 0 1px 3px -1px;--shadow-hover:#00000080 0 8px 24px -4px, #0000004d 0 4px 8px -2px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font:14px/1.6 var(--sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;transition:background .3s,color .3s}.app-container{background:var(--bg);flex-direction:column;min-height:100vh;transition:background .3s;display:flex}.navbar{z-index:1000;height:var(--navbar-height);background:var(--bg);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:0 20px;transition:background .3s,border-color 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32px;overflow-y:auto}.main-content-header{margin-bottom:24px}.main-content-title{color:var(--text-h);font-size:22px;font-weight:600;font-family:var(--heading);letter-spacing:-.2px;margin-bottom:4px}.main-content-subtitle{color:var(--text);opacity:.8;font-size:14px}.content-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;display:grid}.content-card{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:16px 20px;transition:all .2s}.content-card:hover{box-shadow:var(--shadow-hover);border-color:var(--accent-border);transform:translateY(-2px)}.content-card-title{color:var(--text-h);margin-bottom:6px;font-size:14px;font-weight:600}.content-card-description{color:var(--text);opacity:.85;font-size:13px;line-height:1.5}.right-panel{width:var(--right-panel-width);background:var(--bg);border-left:1px solid var(--border);height:calc(100vh - var(--navbar-height));top:var(--navbar-height);flex-shrink:0;padding:20px 16px;position:sticky;overflow-y:auto}.right-panel-section{margin-bottom:20px}.right-panel-title{text-transform:uppercase;letter-spacing:.5px;color:var(--text);opacity:.6;margin-bottom:8px;padding:0 4px;font-size:10px;font-weight:600}.right-panel-item{cursor:pointer;color:var(--text);border-radius:6px;align-items:center;gap:10px;padding:8px 10px;font-size:13px;transition:all .15s;display:flex}.right-panel-item:hover{background:var(--code-bg);color:var(--text-h)}.right-panel-item .avatar{background:var(--accent-bg);width:28px;height:28px;color:var(--accent);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:12px;font-weight:600;display:flex}.right-panel-item .status{border-radius:50%;flex-shrink:0;width:6px;height:6px;margin-left:auto}.status.online{background:#22c55e}.status.offline{background:#9ca3af}.status.away{background:#f59e0b}@media (width<=1200px){:root{--right-panel-width:240px}}@media (width<=1024px){:root{--right-panel-width:220px;--sidebar-width:220px}.main-content{padding:20px 16px}.content-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}}@media (width<=768px){:root{--navbar-height:52px;--sidebar-width:280px;--right-panel-width:0px}.hamburger{display:flex}.logo{width:100px}.navbar-center{display:none}.navbar-center.mobile-open{top:var(--navbar-height);background:var(--bg);border-bottom:1px solid var(--border);max-width:100%;margin:0;padding:12px 16px;display:flex;position:absolute;left:0;right:0}.sidebar{top:var(--navbar-height);z-index:999;width:var(--sidebar-width);box-shadow:var(--shadow-hover);position:fixed;bottom:0;left:0;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar.closed{transform:translate(-100%)}.right-panel{display:none}.main-content{margin-left:0;padding:16px}.main-content-title{font-size:20px}.content-grid{grid-template-columns:1fr}.navbar-button-text{display:none}}@media (width<=480px){.navbar{padding:0 12px}.main-content{padding:12px}.main-content-title{font-size:18px}.content-card{padding:14px 16px}.navbar-brand{font-size:18px}}.sidebar-overlay{top:var(--navbar-height);z-index:998;background:#0006;display:none;position:fixed;bottom:0;left:0;right:0}.sidebar-overlay.open{display:block}@media (width<=768px){.sidebar-overlay.open{display:block}}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text);opacity:.6}.text-accent{color:var(--accent)}.bg-accent{background:var(--accent-bg)}.border-accent{border-color:var(--accent-border)}.shadow{box-shadow:var(--shadow)}.shadow-hover{box-shadow:var(--shadow-hover)}.flex{display:flex}.flex-center{justify-content:center;align-items:center;display:flex}.gap-2{gap:6px}.gap-4{gap:12px}.mt-4{margin-top:12px}.mb-4{margin-bottom:12px}.p-4{padding:12px}.sidebar-menu-wrapper{margin-bottom:2px}.sidebar-item.has-submenu{cursor:pointer;position:relative}.sidebar-item.has-submenu:hover{background:var(--code-bg)}.submenu-arrow{color:var(--text);opacity:.5;margin-left:auto;font-size:9px;transition:transform .25s}.submenu-arrow.expanded{transform:rotate(90deg)}.sidebar-submenu{border-left:1.5px solid var(--border);margin-top:2px;margin-bottom:4px;padding-left:16px;animation:.2s ease-out slideDown}.sidebar-subitem{cursor:pointer;color:var(--text);border-radius:6px;align-items:center;gap:10px;margin-bottom:1px;padding:6px 10px;font-size:12px;font-weight:440;text-decoration:none;transition:all .15s;display:flex}.sidebar-subitem:hover{background:var(--code-bg);color:var(--text-h)}.sidebar-subitem.active{background:var(--accent-bg);color:var(--accent);font-weight:500}.sidebar-subitem .icon{flex-shrink:0;justify-content:center;align-items:center;width:16px;height:16px;font-size:13px;display:flex}.sidebar-subitem .badge{background:var(--code-bg);color:var(--text);border-radius:10px;margin-left:auto;padding:1px 6px;font-size:9px;font-weight:500}@keyframes slideDown{0%{opacity:0;max-height:0;transform:translateY(-6px)}to{opacity:1;max-height:500px;transform:translateY(0)}}.sidebar-subitem:hover .badge,.sidebar-item.active.has-submenu{background:var(--accent-bg);color:var(--accent)}.sidebar-item.active.has-submenu .submenu-arrow{color:var(--accent);opacity:1}@media (width<=768px){.sidebar-submenu{padding-left:12px}.sidebar-subitem{padding:6px 8px;font-size:12px}}.sidebar{overflow:hidden auto}.sidebar::-webkit-scrollbar{width:4px}.sidebar::-webkit-scrollbar-track{background:0 0}.sidebar::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.sidebar::-webkit-scrollbar-thumb:hover{background:var(--text);opacity:.5}h1,h2,h3,h4,h5,h6{font-family:var(--heading);color:var(--text-h);letter-spacing:-.02em;font-weight:600}h1{font-size:26px}h2{font-size:22px}h3{font-size:18px}h4{font-size:16px}h5{font-size:14px}h6{font-size:13px}p{color:var(--text);font-size:14px;line-height:1.6}a{color:var(--accent);text-decoration:none;transition:color .15s}a:hover{color:var(--text-h)}small{color:var(--text);opacity:.7;font-size:12px}.btn{font-size:13px;font-weight:500;font-family:var(--sans);border:1px solid var(--border);background:var(--bg);color:var(--text);cursor:pointer;border-radius:6px;justify-content:center;align-items:center;gap:6px;height:34px;padding:6px 16px;transition:all .15s;display:inline-flex}.btn:hover{background:var(--code-bg);border-color:var(--text)}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-primary:hover{background:var(--accent);opacity:.9;border-color:var(--accent)}.btn-sm{height:28px;padding:4px 12px;font-size:12px}.btn-lg{height:40px;padding:8px 24px;font-size:14px}.input{border:1px solid var(--border);background:var(--bg);color:var(--text-h);font-size:13px;font-family:var(--sans);border-radius:6px;outline:none;width:100%;height:34px;padding:6px 12px;transition:all .15s}.input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-bg)}.input::placeholder{color:var(--text);opacity:.5}.card{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:16px 20px;transition:all .2s}.card:hover{box-shadow:var(--shadow-hover);border-color:var(--accent-border)}.badge{background:var(--code-bg);color:var(--text);border-radius:12px;align-items:center;padding:1px 8px;font-size:11px;font-weight:500;display:inline-flex}.badge-primary{background:var(--accent-bg);color:var(--accent)}.badge-success{color:#22c55e;background:#22c55e26}.badge-warning{color:#f59e0b;background:#f59e0b26}.badge-danger{color:#ef4444;background:#ef444426}.students-container{background-color:var(--bg);color:var(--text);min-height:100vh;padding:20px;transition:background-color .3s,color .3s}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.error-message{background-color:var(--danger);color:#fff;align-items:center;gap:12px;margin:16px 0;padding:12px 20px;display:flex}.students-content{margin-top:20px}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@media (width<=768px){.students-container{padding:12px}.students-content{margin-top:12px}.detail-grid,.form-grid{grid-template-columns:1fr!important}.header{flex-direction:column}.header-actions{width:100%}.summary{flex-direction:column;align-items:stretch}.summary-item{align-items:flex-start}.action-buttons{flex-wrap:wrap}.toolbar-actions{flex-direction:column;align-items:stretch}.filter-select{width:100%}.fields-grid{grid-template-columns:1fr!important}}@media (width<=480px){.student-header{flex-direction:column;align-items:flex-start}.header-meta{flex-direction:column;gap:4px}.header-actions{flex-direction:column}.action-button{width:100%}}@media print{.students-container{color:#000!important;background-color:#fff!important}.action-buttons,.header-actions,.back-button{display:none!important}.card{box-shadow:none!important;border:1px solid #ddd!important}}.notification-container{display:inline-block;position:relative}.notification-bell{cursor:pointer;border-radius:50%;padding:8px;font-size:24px;transition:background-color .2s;position:relative}.notification-bell:hover{background-color:var(--bg)}.badge{background-color:var(--bg);color:var(--text);text-align:center;min-width:20px;padding:2px 6px;font-size:12px;font-weight:700;position:absolute;top:-2px;right:-2px}.notification-dropdown{background:var(--bg-secondary);z-index:1000;flex-direction:column;width:380px;max-height:500px;display:flex;position:absolute;top:100%;right:0;overflow:hidden}.notification-header{border-bottom:1px solid var(--border);background:var(--bg-secondary);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.notification-header h3{margin:0;font-size:16px;font-weight:600}.mark-all-read-btn{color:var(--text-h);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:4px 8px;font-size:13px}.mark-all-read-btn:hover{background:var(--bg-secondary)}.notification-list{max-height:400px;overflow-y:auto}.notification-item{border-bottom:1px solid var(--border);cursor:pointer;justify-content:space-between;align-items:flex-start;padding:12px 20px;transition:background-color .15s;display:flex}.notification-item:hover,.notification-item.unread,.notification-item.unread:hover{background-color:var(--bg-secondary)}.notification-content{flex:1;margin-right:12px}.notification-title{align-items:center;gap:8px;margin-bottom:4px;display:flex}.unread-dot{color:var(--text-h);font-size:8px}.notification-body{color:var(--text-h);word-wrap:break-word;margin:4px 0;font-size:14px}.notification-time{color:var(--text-h);font-size:12px}.remove-btn{color:var(--text-h);cursor:pointer;background:0 0;border:none;flex-shrink:0;padding:4px 8px;font-size:16px}.remove-btn:hover{background:var(--bg-secondary);color:var(--text-h)}.empty-state{text-align:center;color:var(--text-h);padding:40px 20px}.dropdown-overlay{z-index:999;position:fixed;inset:0}.staff-container{background-color:var(--bg);color:var(--text);min-height:100vh;padding:20px;transition:background-color .3s,color .3s}.loading-spinner{flex-direction:column;justify-content:center;align-items:center;padding:40px 0;display:flex}.spinner{border:4px solid var(--border);border-top:4px solid var(--primary-color);border-radius:50%;width:40px;height:40px;animation:1s linear infinite spin}.error-message{color:var(--text);background-color:#dc3545;align-items:center;gap:12px;margin:16px 0;padding:12px 20px;display:flex}.error-icon{font-size:20px}.staff-content{margin-top:20px}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--text-secondary)}::-webkit-scrollbar-thumb:hover{background:var(--primary-color)}.fade-in{animation:.3s ease-in fadeIn}@media (width<=768px){.staff-container{padding:12px}.staff-content{margin-top:12px}.detail-grid,.form-grid{grid-template-columns:1fr!important}.header{flex-direction:column}.header-actions{width:100%}.action-buttons{flex-wrap:wrap}.toolbar-actions{flex-direction:column;align-items:stretch}.filter-select{width:100%}.fields-grid{grid-template-columns:1fr!important}.salary-summary{grid-template-columns:1fr 1fr!important}}@media (width<=480px){.staff-header{flex-direction:column;align-items:flex-start}.header-meta{flex-direction:column;gap:4px}.header-actions{flex-direction:column}.action-button{width:100%}.salary-summary{grid-template-columns:1fr!important}}@media print{.staff-container{color:#000!important;background-color:#fff!important}.action-buttons,.header-actions,.back-button{display:none!important}.card{box-shadow:none!important;border:1px solid #ddd!important}}