:root{--primary: oklch(45% .14 290);--primary-dark: oklch(38% .15 290);--primary-light: oklch(52% .13 290);--primary-soft: oklch(94% .03 290);--bg: oklch(97% .01 290);--card-bg: #ffffff;--border: oklch(91% .01 290);--text: oklch(25% .03 290);--text-muted: oklch(56% .02 290);--success: oklch(45% .12 150);--success-bg: oklch(93% .06 150);--warning: oklch(45% .14 40);--warning-bg: oklch(92% .08 40);--error: oklch(45% .16 25);--error-bg: oklch(92% .07 25);--pending: oklch(50% .03 290);--pending-bg: oklch(93% .02 290);--sidebar-width: 240px;--radius: 20px;--radius-sm: 12px;--shadow: 0 1px 3px rgba(30, 10, 60, .06);--shadow-md: 0 8px 24px rgba(30, 10, 60, .12)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:Plus Jakarta Sans,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}a{color:var(--primary);text-decoration:none}a:hover{color:var(--primary-dark)}.app-shell{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);flex-shrink:0;background:var(--primary);color:#fff;display:flex;flex-direction:column;padding:32px 20px}.sidebar-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:.5px;margin-bottom:36px}.sidebar-brand-icon{font-size:22px}.sidebar-nav{display:flex;flex-direction:column;gap:4px}.nav-pill{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:var(--radius-sm);color:#ffffffd9;font-size:14px;font-weight:500;transition:background .15s,color .15s}.nav-pill:hover{background:var(--primary-light);color:#fff}.nav-pill.active{background:#ffffff29;color:#fff;font-weight:600}.nav-pill-icon{font-size:16px;flex-shrink:0}.sidebar-footer{margin-top:auto;padding-top:32px;font-size:11px;color:#ffffff80}.main-content{flex:1;display:flex;flex-direction:column;min-width:0}.top-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:32px 40px 0}.top-bar-title{font-size:26px;font-weight:800;color:var(--text)}.top-bar-actions{display:flex;align-items:center;gap:14px}.icon-btn{width:38px;height:38px;border-radius:var(--radius-sm);border:none;background:var(--card-bg);box-shadow:var(--shadow);cursor:pointer;font-size:15px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.icon-btn:hover{background:var(--primary-soft)}.notif-bell-wrapper{position:relative}.notif-badge{position:absolute;top:-4px;right:-4px;min-width:17px;height:17px;padding:0 4px;border-radius:999px;background:var(--error);color:#fff;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center;line-height:1;box-shadow:0 0 0 2px var(--card-bg)}.notif-dropdown{position:absolute;top:calc(100% + 10px);right:0;width:320px;max-height:380px;background:var(--card-bg);border-radius:var(--radius-sm);box-shadow:var(--shadow-md);overflow:hidden;display:flex;flex-direction:column;z-index:50}.notif-dropdown-header{padding:14px 18px;font-size:13px;font-weight:700;color:var(--text);border-bottom:1px solid var(--border)}.notif-list{overflow-y:auto}.notif-item{display:block;width:100%;text-align:left;padding:12px 18px;border:none;border-bottom:1px solid var(--border);background:none;cursor:pointer;font-family:inherit}.notif-item:last-child{border-bottom:none}.notif-item:hover{background:var(--bg)}.notif-item.unread{background:var(--primary-soft)}.notif-item.unread:hover{background:#dddaf7}.notif-item-message{font-size:13px;color:var(--text);line-height:1.4}.notif-item.unread .notif-item-message{font-weight:700}.notif-item-date{font-size:11.5px;color:var(--text-muted);margin-top:4px}.notif-empty{padding:28px 18px;text-align:center;color:var(--text-muted);font-size:13px}.page-area{flex:1;padding:24px 40px 40px}.stack-24{display:flex;flex-direction:column;gap:24px}.card{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px 28px}.card-title{font-size:16px;font-weight:700;color:var(--text)}.card-header-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px;flex-wrap:wrap}.card-header-actions{display:flex;align-items:center;gap:12px}.link-btn{font-size:13px;font-weight:600}.profile-card{display:flex;align-items:center;gap:20px}.avatar-circle{width:64px;height:64px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;flex-shrink:0}.profile-info{flex:1;min-width:0}.profile-name{font-size:19px;font-weight:700;color:var(--text)}.profile-sub{font-size:13px;color:var(--text-muted);margin-top:2px}.profile-edit-row{display:flex;gap:10px;align-items:center}.profile-edit-row .form-control{max-width:280px}.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px}.stat-tile{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 22px}.stat-tile-value{font-size:28px;font-weight:800;color:var(--primary)}.stat-tile-label{font-size:12.5px;color:var(--text-muted);margin-top:4px}.exam-timeline{display:flex;flex-direction:column}.exam-timeline-row{display:flex;gap:16px}.exam-timeline-marker{display:flex;flex-direction:column;align-items:center;width:14px;flex-shrink:0}.exam-dot{width:12px;height:12px;border-radius:50%;flex-shrink:0}.exam-line{width:2px;flex:1;background:var(--border);min-height:32px}.exam-row-card{flex:1;background:var(--bg);border-radius:var(--radius-sm);padding:14px 18px;margin-bottom:14px}.exam-row-main{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.exam-row-title{font-weight:700;font-size:14px}.exam-row-date{font-size:12px;color:var(--text-muted)}.exam-row-sub{font-size:12.5px;color:var(--text-muted);margin-top:4px}.tone-success{color:var(--success)}.tone-warning{color:var(--warning)}.tone-error{color:var(--error)}.tone-pending{color:var(--pending)}.exam-dot.tone-success{background:var(--success)}.exam-dot.tone-warning{background:var(--warning)}.exam-dot.tone-error{background:var(--error)}.exam-dot.tone-pending{background:var(--pending)}.badge-pill{display:inline-flex;align-items:center;gap:4px;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600}.badge-pill.tone-success{background:var(--success-bg);color:var(--success)}.badge-pill.tone-warning{background:var(--warning-bg);color:var(--warning)}.badge-pill.tone-error{background:var(--error-bg);color:var(--error)}.badge-pill.tone-pending{background:var(--pending-bg);color:var(--pending)}.form-group{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.form-group label{font-size:12px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.4px}.form-control{padding:11px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:14px;color:var(--text);background:#fff;outline:none;transition:border-color .15s,box-shadow .15s;width:100%;font-family:inherit}.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 18px;border-radius:var(--radius-sm);font-size:13.5px;font-weight:600;cursor:pointer;border:none;transition:background .15s,transform .1s,opacity .15s;white-space:nowrap;font-family:inherit}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-dark)}.btn-secondary{background:var(--primary-soft);color:var(--primary-dark)}.btn-secondary:hover:not(:disabled){background:#dddaf7}.btn-sm{padding:7px 14px;font-size:12.5px}.dropzone{border:2px dashed var(--border);border-radius:var(--radius-sm);padding:36px 16px;text-align:center;cursor:pointer;background:var(--bg);transition:border-color .15s,background .15s}.dropzone:hover,.dropzone-active{border-color:var(--primary);background:var(--primary-soft)}.alert{padding:16px 18px;border-radius:var(--radius-sm);font-size:13.5px;margin-bottom:16px}.alert-error{background:var(--error-bg);color:var(--error)}.alert-success{background:var(--success-bg);color:var(--success)}.spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .75s linear infinite;margin:0 auto}.spinner-sm{width:16px;height:16px;border-width:2px}@keyframes spin{to{transform:rotate(360deg)}}.spinner-wrapper{display:flex;align-items:center;justify-content:center;padding:32px}.toast-container{position:fixed;bottom:20px;right:20px;display:flex;flex-direction:column;gap:8px;z-index:9999;pointer-events:none}.toast{padding:12px 18px;border-radius:var(--radius-sm);font-size:13.5px;font-weight:500;box-shadow:var(--shadow-md);animation:slideIn .25s ease;pointer-events:auto;min-width:240px;max-width:360px;color:#fff}.toast-success{background:var(--success)}.toast-error{background:var(--error)}@keyframes slideIn{0%{opacity:0;transform:translate(40px)}to{opacity:1;transform:translate(0)}}.empty-state{text-align:center;padding:36px 16px;color:var(--text-muted);font-size:13.5px}.empty-state .empty-icon{font-size:36px;margin-bottom:10px}.table-wrapper{overflow-x:auto;border-radius:var(--radius-sm);border:1px solid var(--border)}table{width:100%;border-collapse:collapse;font-size:13px}thead th{background:var(--bg);padding:12px 16px;text-align:left;font-weight:700;color:var(--text-muted);font-size:11.5px;text-transform:uppercase;letter-spacing:.4px;border-bottom:1px solid var(--border);white-space:nowrap}tbody tr{border-bottom:1px solid var(--border)}tbody tr:last-child{border-bottom:none}tbody td{padding:12px 16px;color:var(--text);vertical-align:middle}.page-header{margin-bottom:24px}.page-header h1{font-size:22px;font-weight:800;color:var(--text)}.page-header p{color:var(--text-muted);font-size:13.5px;margin-top:4px}.flex-center{display:flex;align-items:center;justify-content:center}.mt-16{margin-top:16px}@media (max-width: 860px){.sidebar{width:76px;padding:24px 12px}.sidebar-brand span:not(.sidebar-brand-icon){display:none}.nav-pill span:not(.nav-pill-icon){display:none}.nav-pill{justify-content:center}.sidebar-footer{display:none}.top-bar,.page-area{padding-left:20px;padding-right:20px}}