@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700&display=swap";:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--primary:#8b5cf6;--primary-hover:#7c3aed;--success:#10b981;--success-hover:#059669;--danger:#f43f5e;--warning:#f59e0b;--background:#0b0f19;--surface:#151e30;--surface-glass:#151e30bf;--border:#ffffff14;--text-primary:#f8fafc;--text-muted:#94a3b8;--xs:4px;--sm:8px;--md:16px;--lg:24px;--xl:32px;--2xl:48px;--radius-sm:6px;--radius-md:12px;--radius-lg:20px;--radius-full:9999px;--shadow-sm:0 2px 4px #0000001a;--shadow-md:0 8px 16px #0003;--shadow-lg:0 20px 40px #0000004d;--glass-shadow:inset 0 1px 1px #ffffff0d, 0 10px 30px #0006;--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--transition-normal:.25s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--background);color:var(--text-primary);min-height:100vh;font-family:Inter,sans-serif;line-height:1.6;overflow-x:hidden}h1,h2,h3,.brand-font{letter-spacing:-.02em;font-family:Outfit,sans-serif;font-weight:700}.hidden{display:none!important}.container{width:100%;max-width:1200px;padding:0 var(--md);margin:0 auto}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--background)}::-webkit-scrollbar-thumb{background:var(--surface);border-radius:var(--radius-full);border:2px solid var(--background)}::-webkit-scrollbar-thumb:hover{background:var(--primary)}.glass-panel{background:var(--surface-glass);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--glass-shadow)}.hover-card{transition:var(--transition-normal)}.hover-card:hover{border-color:var(--primary);box-shadow:var(--shadow-lg), 0 0 15px #8b5cf626;transform:translateY(-4px)}.btn{border-radius:var(--radius-md);cursor:pointer;transition:var(--transition-fast);justify-content:center;align-items:center;gap:var(--sm);-webkit-user-select:none;user-select:none;border:1px solid #0000;padding:10px 20px;font-size:.95rem;font-weight:600;display:inline-flex}.btn-sm{border-radius:var(--radius-sm);padding:6px 12px;font-size:.85rem}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-hover);box-shadow:0 0 12px #8b5cf666}.btn-primary:disabled{color:#ffffff80;cursor:not-allowed;box-shadow:none;background-color:#8b5cf64d}.btn-secondary{border:1px solid var(--border);color:var(--text-primary);background-color:#0000}.btn-secondary:hover{border-color:var(--text-muted);background-color:#ffffff0d}.btn-danger{background-color:var(--danger);color:#fff}.btn-danger:hover{background-color:#e11d48;box-shadow:0 0 12px #f43f5e66}.btn-success{background-color:var(--success);color:#fff}.btn-success:hover{background-color:var(--success-hover);box-shadow:0 0 12px #10b98166}.input-group{margin-bottom:var(--md);gap:var(--sm);flex-direction:column;display:flex}.input-label{color:var(--text-muted);font-size:.875rem;font-weight:500}.form-input{border:1px solid var(--border);border-radius:var(--radius-sm);transition:var(--transition-fast);--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;-webkit-text-fill-color:var(--text-primary);outline:none;width:100%;padding:12px 16px;font-size:.95rem;color:var(--text-primary)!important;background-color:#ffffff0d!important}.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 2px #8b5cf633;background-color:#ffffff14!important}select.form-input{cursor:pointer;appearance:none;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");background-position:right 16px center;background-repeat:no-repeat;background-size:16px;padding-right:40px;color:var(--text-primary)!important;background-color:#ffffff0d!important}select.form-input option{background-color:var(--surface);color:var(--text-primary)}input,select,textarea{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}input::placeholder,textarea::placeholder{opacity:1;color:var(--text-muted)!important}input[type=number]::-webkit-inner-spin-button{opacity:.5;filter:invert()}input[type=number]::-webkit-outer-spin-button{opacity:.5;filter:invert()}header{border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:100;background:#0b0f19cc;align-items:center;height:70px;display:flex;position:sticky;top:0}header .header-content{justify-content:space-between;align-items:center;width:100%;display:flex}.logo-container{align-items:center;gap:var(--sm);display:flex}.logo-dot{background-color:var(--primary);border-radius:var(--radius-full);width:12px;height:12px;box-shadow:0 0 8px var(--primary)}.app-title{background:linear-gradient(135deg, var(--text-primary) 30%, var(--primary) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:1.5rem}.exams-grid-layout{gap:var(--lg);grid-template-columns:repeat(auto-fill,minmax(320px,1fr));display:grid}.exam-card{padding:var(--lg);flex-direction:column;height:100%;display:flex;position:relative}.exam-card-title{margin-bottom:var(--sm);font-size:1.25rem}.exam-card-type-badge{border-radius:var(--radius-full);margin-bottom:var(--md);text-transform:uppercase;align-self:flex-start;padding:3px 8px;font-size:.75rem;font-weight:600}.badge-tracnghiem{color:#a78bfa;background-color:#8b5cf626}.badge-tuluan{color:#34d399;background-color:#10b98126}.exam-card-progress{border-top:1px solid var(--border);padding-top:var(--md);margin-top:auto}.exam-progress-stats{color:var(--text-muted);margin-bottom:var(--xs);justify-content:space-between;font-size:.85rem;display:flex}.card-rounds-history{gap:var(--xs);margin-top:var(--sm);flex-wrap:wrap;display:flex}.history-tag{border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-muted);background-color:#ffffff0a;padding:2px 6px;font-size:.75rem}.card-actions-bar{gap:var(--sm);margin-top:var(--lg);display:flex}.progress-bar-container{border-radius:var(--radius-full);background-color:#ffffff0d;width:100%;height:8px;overflow:hidden}.progress-bar-fill{background:linear-gradient(90deg, var(--primary) 0%, #a78bfa 100%);border-radius:var(--radius-full);height:100%;transition:width var(--transition-normal)}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:200;transition:var(--transition-normal);background:#000000b3;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal-content{width:90%;max-width:500px;padding:var(--xl);position:relative}.timer-box{align-items:center;gap:var(--sm);border-radius:var(--radius-full);color:var(--warning);background-color:#f59e0b1f;border:1px solid #f59e0b33;padding:6px 14px;font-weight:700;display:flex}.timer-box.pulse{color:var(--danger);background-color:#f43f5e26;border-color:#f43f5e4d;animation:1s infinite alternate pulse-border}.warning-banner{border-left:4px solid var(--warning);padding:10px var(--md);border-radius:var(--radius-sm);color:#fbd38d;background-color:#f59e0b1a;font-size:.85rem;font-weight:500}.success-banner{border-left:4px solid var(--success);padding:12px var(--md);border-radius:var(--radius-sm);color:#a7f3d0;background-color:#10b9811a;font-size:.9rem;font-weight:500}.dropzone-area{border:2px dashed var(--border);border-radius:var(--radius-md);padding:var(--2xl) var(--xl);text-align:center;cursor:pointer;transition:var(--transition-normal);background-color:#ffffff03}.dropzone-area:hover{border-color:var(--primary);background-color:#8b5cf608}.dropzone-area.dragover{border-color:var(--success);background-color:#10b9810d}.preview-table{border-collapse:collapse;width:100%;font-size:.85rem}.preview-table th{background-color:var(--surface);color:var(--text-muted);text-align:left;border-bottom:1px solid var(--border);z-index:10;padding:10px 12px;font-weight:600;position:sticky;top:0}.preview-table td{border-bottom:1px solid var(--border);padding:10px 12px}.preview-table tbody tr:hover{background-color:#ffffff05}.preview-row-error{border-left:4px solid var(--danger)!important;background-color:#f43f5e14!important}.preview-row-error td{border-bottom-color:#f43f5e33}.result-metric-circle{border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--md) var(--lg);background-color:#ffffff05;flex-direction:column;justify-content:center;align-items:center;min-width:140px;display:flex}.question-item{padding:var(--lg);margin-bottom:var(--lg)}.question-text-title{margin-bottom:var(--md);justify-content:space-between;align-items:flex-start;gap:var(--md);font-size:1.15rem;font-weight:600;display:flex}.options-list-grid{gap:var(--sm);flex-direction:column;display:flex}.option-choice-btn{background-color:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);text-align:left;cursor:pointer;transition:var(--transition-fast);color:var(--text-primary);align-items:center;gap:var(--md);padding:14px 18px;font-size:.95rem;display:flex}.option-choice-btn:hover{border-color:var(--primary);background-color:#ffffff05}.option-choice-btn.selected{border-color:var(--primary);background-color:#8b5cf626;box-shadow:0 0 10px #8b5cf61a}.option-badge-key{border:1px solid var(--border);border-radius:var(--radius-full);width:24px;height:24px;color:var(--text-muted);background-color:#ffffff0d;justify-content:center;align-items:center;font-size:.8rem;font-weight:700;display:inline-flex}.option-choice-btn.selected .option-badge-key{background-color:var(--primary);color:#fff;border-color:var(--primary)}.option-choice-btn.correct-state{border-color:var(--success);background-color:#10b98126}.option-choice-btn.correct-state .option-badge-key{background-color:var(--success);color:#fff;border-color:var(--success)}.option-choice-btn.incorrect-state{border-color:var(--danger);background-color:#f43f5e26}.option-choice-btn.incorrect-state .option-badge-key{background-color:var(--danger);color:#fff;border-color:var(--danger)}.btn-bookmark-star{cursor:pointer;color:var(--text-muted);transition:var(--transition-fast);background:0 0;border:none;padding:4px;font-size:1.5rem}.btn-bookmark-star:hover{transform:scale(1.2)}.btn-bookmark-star.bookmarked{color:#eab308}.essay-textarea{resize:vertical;min-height:120px}@keyframes pulse-border{0%{box-shadow:0 0 #f43f5e66}to{box-shadow:0 0 10px #f43f5eb3}}.app-container{width:100%;min-height:100vh;display:flex;position:relative}.main-body{flex-direction:column;flex-grow:1;min-width:0;display:flex}.sidebar{border-right:1px solid var(--border);width:260px;padding:var(--xl) var(--lg);gap:var(--2xl);-webkit-backdrop-filter:blur(20px);z-index:150;height:100vh;transition:var(--transition-normal);background:#0b0f19f2;flex-direction:column;flex-shrink:0;display:flex;position:sticky;top:0}.sidebar-brand{align-items:center;gap:var(--sm);padding-left:var(--sm);display:flex}.sidebar-brand .logo-dot{background-color:var(--primary);border-radius:var(--radius-full);width:12px;height:12px;box-shadow:0 0 8px var(--primary)}.sidebar-brand .brand-font{background:linear-gradient(135deg, var(--text-primary) 30%, var(--primary) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:1.5rem;font-weight:700}.sidebar-nav{gap:var(--xs);flex-direction:column;display:flex}.nav-item{align-items:center;gap:var(--md);color:var(--text-muted);border-radius:var(--radius-md);transition:var(--transition-fast);padding:12px 16px;font-size:.95rem;font-weight:500;text-decoration:none;display:flex}.nav-item:hover{color:var(--text-primary);background-color:#ffffff08}.nav-item.active{color:#fff;background:linear-gradient(135deg, var(--primary) 0%, #a78bfa 100%);box-shadow:0 4px 12px #8b5cf64d}.nav-icon{font-size:1.1rem}#main-header{border-bottom:1px solid var(--border);height:80px;padding:0 var(--xl);-webkit-backdrop-filter:blur(12px);z-index:100;justify-content:space-between;align-items:center;gap:var(--md);background:#0b0f19cc;display:flex;position:sticky;top:0}.header-user-info{align-items:center;gap:var(--md);display:flex}.user-avatar{border-radius:var(--radius-full);border:2px solid var(--primary);object-fit:cover;width:44px;height:44px;box-shadow:0 0 10px #8b5cf633}.user-details{flex-direction:column;display:flex}.user-greeting{color:var(--text-primary);font-size:.95rem;font-weight:600}.user-status{color:var(--text-muted);align-items:center;gap:var(--xs);margin-top:1px;font-size:.75rem;display:flex}.status-dot{background-color:var(--success);border-radius:var(--radius-full);width:8px;height:8px;box-shadow:0 0 6px var(--success);display:inline-block}.header-date{color:var(--text-muted);font-size:.9rem;font-weight:500}.header-actions{align-items:center;gap:var(--md);display:flex}.search-box{width:240px;position:relative}.search-box input{border:1px solid var(--border);border-radius:var(--radius-full);color:var(--text-primary);width:100%;transition:var(--transition-fast);background-color:#ffffff08;outline:none;padding:8px 12px 8px 36px;font-size:.85rem}.search-box input:focus{border-color:var(--primary);background-color:#ffffff0f;box-shadow:0 0 0 2px #8b5cf626}.search-box .search-icon{color:var(--text-muted);font-size:.85rem;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.icon-btn{border:1px solid var(--border);color:var(--text-primary);border-radius:var(--radius-full);cursor:pointer;width:40px;height:40px;transition:var(--transition-fast);background:#ffffff05;justify-content:center;align-items:center;font-size:1.1rem;display:flex;position:relative}.icon-btn:hover{border-color:var(--text-muted);background:#ffffff0f;transform:scale(1.05)}.notification-badge{background-color:var(--danger);border-radius:var(--radius-full);width:8px;height:8px;box-shadow:0 0 6px var(--danger);position:absolute;top:10px;right:10px}.logout-btn:hover{border-color:var(--danger);color:var(--danger);background:#f43f5e1a}.dashboard-layout{gap:var(--xl);grid-template-columns:320px 1fr;align-items:start;display:grid}.dashboard-sidebar-stats{flex-direction:column;display:flex}.dashboard-main-content{flex-direction:column;min-width:0;display:flex}.progress-circle-wrapper{width:160px;height:160px;margin:var(--lg) auto;position:relative}.progress-circle{width:100%;height:100%;transform:rotate(-90deg)}.circle-bg{fill:none;stroke:#ffffff08;stroke-width:8px}.circle-progress{fill:none;stroke:var(--primary);stroke-width:8px;stroke-dasharray:251.2;stroke-dashoffset:251.2px;stroke-linecap:round;transition:stroke-dashoffset 1s cubic-bezier(.4,0,.2,1)}.progress-circle-text{text-align:center;pointer-events:none;flex-direction:column;align-items:center;display:flex;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.progress-circle-text span{color:var(--text-primary);font-family:Outfit,sans-serif;font-size:2rem;font-weight:700;line-height:1.1}.progress-circle-text .sub-text{color:var(--text-muted);margin-top:2px;font-size:.8rem;font-weight:500}.accuracy-trend-box{margin-top:var(--lg);border-top:1px solid var(--border);padding-top:var(--md)}.mini-chart-container{height:40px;margin-top:var(--sm)}.mini-line-chart{width:100%;height:100%}.history-list{gap:var(--sm);max-height:250px;padding-right:var(--xs);flex-direction:column;display:flex;overflow-y:auto}.history-item{border:1px solid var(--border);border-radius:var(--radius-sm);gap:var(--xs);transition:var(--transition-fast);background:#ffffff03;flex-direction:column;padding:10px 12px;font-size:.85rem;display:flex}.history-item:hover{border-color:var(--primary);background:#ffffff08}.history-item-header{justify-content:space-between;font-weight:600;display:flex}.history-item-title{white-space:nowrap;text-overflow:ellipsis;max-width:160px;overflow:hidden}.history-item-details{color:var(--text-muted);justify-content:space-between;font-size:.8rem;display:flex}.filter-tab{color:var(--text-muted);cursor:pointer;border-radius:var(--radius-full);transition:var(--transition-fast);background:0 0;border:none;padding:6px 12px;font-size:.85rem;font-weight:600}.filter-tab:hover{color:var(--text-primary);background-color:#ffffff08}.filter-tab.active{color:#fff;background-color:var(--primary);box-shadow:0 2px 8px #8b5cf64d}.exams-list-layout{gap:var(--md);flex-direction:column;display:flex}.exam-list-card{gap:var(--lg);padding:var(--lg);grid-template-columns:1fr 150px;align-items:center;display:grid}.exam-list-card-left{gap:var(--sm);flex-direction:column;min-width:0;display:flex}.exam-list-card-title-row{align-items:center;gap:var(--md);flex-wrap:wrap;display:flex}.exam-list-card-title{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;margin-bottom:0;font-size:1.25rem;font-weight:600;overflow:hidden}.exam-list-card-meta{color:var(--text-muted);font-size:.8rem}.exam-list-card-progress-row{align-items:center;gap:var(--md);width:100%;display:flex}.exam-list-card-progress-row .progress-bar-container{flex-grow:1}.exam-list-card-progress-percent{color:var(--text-primary);text-align:right;min-width:35px;font-size:.85rem;font-weight:600}.exam-list-card-status-info{color:var(--text-muted);gap:var(--md);flex-wrap:wrap;font-size:.8rem;display:flex}.exam-list-card-actions{gap:var(--sm);flex-direction:column;display:flex}@media (width<=1200px){.dashboard-layout{gap:var(--lg);grid-template-columns:280px 1fr}}@media (width<=992px){.dashboard-layout{grid-template-columns:1fr}.sidebar{width:80px;padding:var(--xl) var(--xs);align-items:center}.sidebar-brand .brand-font{display:none}.nav-item{justify-content:center;width:48px;height:48px;padding:12px}.nav-item span:not(.nav-icon){display:none}#main-header{padding:0 var(--lg)}.header-date{display:none}}@media (width<=768px){.app-container{flex-direction:column}.sidebar{width:100%;height:auto;padding:var(--sm) var(--md);border-right:none;border-bottom:1px solid var(--border);flex-direction:row;justify-content:space-between;position:sticky;top:0}.sidebar-nav{gap:var(--sm);flex-direction:row}.nav-item{width:auto;height:auto;padding:8px var(--sm)}#main-header{height:auto;padding:var(--md);flex-direction:column;align-items:stretch}.header-actions{margin-top:var(--sm);justify-content:space-between}.search-box{flex-grow:1}.exam-list-card{gap:var(--md);grid-template-columns:1fr}.exam-list-card-actions{flex-direction:row}.exam-list-card-actions button{flex:1}}body:not(.logged-in-layout) .app-container{justify-content:center;align-items:center}body:not(.logged-in-layout) .main-body{flex-grow:0;width:100%;max-width:450px}#toast-container{gap:var(--sm);z-index:99999;pointer-events:none;flex-direction:column;width:max-content;max-width:380px;display:flex;inset:auto 24px 24px auto;position:fixed!important}.toast{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);box-shadow:var(--shadow-lg);opacity:0;pointer-events:all;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);word-break:break-word;min-width:220px;max-width:360px;padding:12px 20px;font-size:.9rem;transition:transform .3s cubic-bezier(.4,0,.2,1),opacity .3s;transform:translate(calc(100% + 24px))}.toast.show{opacity:1;transform:translate(0)}.toast-info{border-left:4px solid var(--primary)}.toast-success{border-left:4px solid var(--success)}.toast-error{border-left:4px solid var(--danger)}.toast-warning{border-left:4px solid var(--warning)}.bookmark-mode-badge{border-radius:var(--radius-full);color:var(--warning);white-space:nowrap;background:#f59e0b26;border:1px solid #f59e0b4d;align-items:center;padding:3px 10px;font-size:.75rem;font-weight:600;display:inline-flex}.btn-warning{color:var(--warning);background-color:#f59e0b1f;border:1px solid #f59e0b40}.btn-warning:hover{border-color:var(--warning);background-color:#f59e0b38;box-shadow:0 0 12px #f59e0b33}.btn-warning:disabled{opacity:.4;cursor:not-allowed;box-shadow:none}.view-page-header{margin-bottom:var(--xl);padding-bottom:var(--lg);border-bottom:1px solid var(--border)}.view-page-header h2{margin-bottom:var(--xs);background:linear-gradient(135deg, var(--text-primary) 30%, var(--primary) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-family:Outfit,sans-serif;font-size:1.75rem;font-weight:700}.view-page-header p{color:var(--text-muted);font-size:.95rem}.history-exam-group{padding:var(--xl);margin-bottom:var(--lg)}.history-exam-title{margin-bottom:var(--md);align-items:center;gap:var(--sm);color:var(--text-primary);flex-wrap:wrap;font-size:1.15rem;font-weight:600;display:flex}.history-rounds-list{gap:var(--sm);padding-left:var(--sm);flex-direction:column;display:flex}.round-history-card{border:1px solid var(--border);border-radius:var(--radius-md);padding:var(--md) var(--lg);transition:var(--transition-fast);background:#ffffff05;justify-content:space-between;align-items:center;display:flex}.round-history-card:hover{border-color:var(--primary);background:#8b5cf60a;transform:translate(4px)}.round-history-info h4{margin-bottom:2px;font-size:1rem;font-weight:600}.round-history-info p{color:var(--text-muted);font-size:.8rem}.round-accuracy-badge{text-align:right;min-width:60px;font-family:Outfit,sans-serif;font-size:1.4rem;font-weight:700}.profile-header-card{padding:var(--xl);align-items:center;gap:var(--xl);margin-bottom:var(--xl);flex-wrap:wrap;display:flex}.profile-avatar-large{border-radius:var(--radius-full);border:3px solid var(--primary);object-fit:cover;flex-shrink:0;width:90px;height:90px;box-shadow:0 0 24px #8b5cf64d}.profile-info-main h3{margin-bottom:var(--xs);font-family:Outfit,sans-serif;font-size:1.6rem;font-weight:700}.profile-info-main p{color:var(--text-muted);font-size:.9rem;line-height:1.6}.profile-stats-grid{gap:var(--md);margin-bottom:var(--xl);grid-template-columns:repeat(auto-fill,minmax(200px,1fr));display:grid}.profile-stat-card{padding:var(--lg);text-align:center;transition:var(--transition-fast)}.profile-stat-card:hover{border-color:var(--primary);transform:translateY(-2px)}.profile-stat-value{color:var(--primary);font-family:Outfit,sans-serif;font-size:2.2rem;font-weight:700;line-height:1;display:block}.profile-stat-label{color:var(--text-muted);margin-top:var(--sm);font-size:.8rem;display:block}.achievement-badge{align-items:center;gap:var(--sm);border-radius:var(--radius-full);color:#a78bfa;margin-right:var(--sm);margin-bottom:var(--sm);background:#8b5cf61a;border:1px solid #8b5cf640;padding:6px 16px;font-size:.9rem;font-weight:500;display:inline-flex}@media (width<=768px){.profile-header-card{text-align:center;gap:var(--md);flex-direction:column}.profile-stats-grid{grid-template-columns:1fr 1fr}.history-exam-group{padding:var(--md)}.round-history-card{padding:var(--sm) var(--md)}.round-accuracy-badge{min-width:48px;font-size:1.1rem}}.admin-tab-nav{border:1px solid var(--border);border-radius:var(--radius-md);background:#ffffff08;gap:0;width:fit-content;padding:4px;display:flex}.admin-tab-btn{color:var(--text-muted);border-radius:calc(var(--radius-md) - 2px);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;background:0 0;border:none;padding:8px 20px;font-size:.9rem;font-weight:500}.admin-tab-btn:hover{color:var(--text-primary);background:#ffffff0d}.admin-tab-btn.active{background:var(--primary);color:#fff;box-shadow:0 2px 8px #8b5cf666}.exam-manage-table{border-collapse:collapse;width:100%;font-size:.875rem}.exam-manage-table th{text-align:left;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);border-bottom:1px solid var(--border);white-space:nowrap;padding:10px 12px;font-size:.75rem;font-weight:600}.exam-manage-table td{vertical-align:middle;color:var(--text-primary);border-bottom:1px solid #ffffff0a;padding:12px}.exam-manage-table tr:last-child td{border-bottom:none}.exam-title-cell{font-weight:500;line-height:1.4}.exam-type-mini{padding:2px 8px!important;font-size:.7rem!important}.category-badge{color:#38bdf8;border-radius:var(--radius-full);white-space:nowrap;letter-spacing:.03em;background:#0ea5e926;border:1px solid #0ea5e94d;padding:2px 8px;font-size:.7rem;font-weight:600;display:inline-block}.category-chip{color:var(--primary);border-radius:var(--radius-full);transition:all var(--transition-fast);background:#8b5cf61f;border:1px solid #8b5cf64d;align-items:center;gap:6px;padding:4px 10px 4px 12px;font-size:.8rem;font-weight:500;display:inline-flex}.category-chip:hover{background:#8b5cf633}.chip-delete-btn{color:var(--danger);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;width:18px;height:18px;padding:0 2px;font-size:1rem;line-height:1;display:flex}.chip-delete-btn:hover{background:#f43f5e33}.btn-danger{background:var(--danger);color:#fff;border:none}.btn-danger:hover{background:#e11d48;transform:translateY(-1px)}.btn-xs{border-radius:var(--radius-sm)!important;padding:4px 8px!important;font-size:.75rem!important}.exam-filters-bar{padding:var(--md);margin-bottom:var(--lg);gap:var(--sm);border-radius:var(--radius-md);flex-direction:column;display:flex}.filter-tabs-row{gap:var(--xs);flex-wrap:wrap;display:flex}.filter-search-row{gap:var(--sm);flex-wrap:wrap;align-items:center;display:flex}.filter-select{border:1px solid var(--border);border-radius:var(--radius-full);cursor:pointer;appearance:none;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;transition:var(--transition-fast);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");background-position:right 10px center;background-repeat:no-repeat;background-size:14px;outline:none;flex-shrink:0;min-width:160px;padding:8px 36px 8px 14px;font-size:.85rem;color:var(--text-primary)!important;background-color:#ffffff0d!important}.filter-select:focus{border-color:var(--primary);box-shadow:0 0 0 2px #8b5cf633}.filter-select option{background-color:var(--surface);color:var(--text-primary)}.filter-search-wrapper{flex:1;min-width:200px;position:relative}.filter-search-icon{color:var(--text-muted);pointer-events:none;font-size:.85rem;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.filter-search-input{border:1px solid var(--border);border-radius:var(--radius-full);width:100%;transition:var(--transition-fast);--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;outline:none;padding:8px 14px 8px 36px;font-size:.9rem;color:var(--text-primary)!important;background-color:#ffffff0d!important}.filter-search-input:focus{border-color:var(--primary);box-shadow:0 0 0 2px #8b5cf633;background-color:#ffffff14!important}.filter-search-input::placeholder{color:var(--text-muted)}.settings-layout{gap:var(--lg);grid-template-columns:1fr 1fr;display:grid}@media (width<=768px){.settings-layout{grid-template-columns:1fr}}.settings-card{padding:var(--xl)}.settings-card-title{margin-bottom:var(--lg);color:var(--text-primary);padding-bottom:var(--sm);border-bottom:1px solid var(--border);font-size:1.1rem;font-weight:600}.settings-desc{color:var(--text-muted);margin-bottom:var(--sm);font-size:.9rem;line-height:1.5}.avatar-upload-area{gap:var(--lg);flex-wrap:wrap;align-items:flex-start;display:flex}.avatar-preview-container{cursor:pointer;border:3px solid var(--border);width:120px;height:120px;transition:border-color var(--transition-fast);border-radius:50%;flex-shrink:0;position:relative;overflow:hidden}.avatar-preview-container:hover{border-color:var(--primary)}.settings-avatar-preview{object-fit:cover;width:100%;height:100%;display:block}.avatar-overlay{opacity:0;transition:opacity var(--transition-fast);color:#fff;background:#0000008c;flex-direction:column;justify-content:center;align-items:center;gap:2px;font-size:1.5rem;display:flex;position:absolute;inset:0}.avatar-preview-container:hover .avatar-overlay{opacity:1}.avatar-overlay small{letter-spacing:.04em;font-size:.7rem;font-weight:600}.avatar-upload-info{gap:var(--xs);flex-direction:column;flex:1;min-width:180px;display:flex}.exam-manage-table{border-collapse:collapse;text-align:left;background:0 0;width:100%}.exam-manage-table th{color:var(--text-muted);text-transform:uppercase;letter-spacing:.1em;border-bottom:1px solid var(--border);background:#ffffff08;padding:14px 16px;font-size:.75rem;font-weight:700}.exam-manage-table td{vertical-align:middle;border-bottom:1px solid #ffffff0d;padding:16px;font-size:.95rem}.exam-manage-table tr:hover td{background:#ffffff05}.exam-type-mini{white-space:nowrap;padding:4px 10px;font-size:.75rem;display:inline-block}.admin-table-actions{flex-wrap:nowrap;justify-content:center;align-items:center;gap:8px;display:flex}.btn-action{border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition-fast);color:var(--text-primary);background-color:#ffffff0d;border:1px solid #0000;justify-content:center;align-items:center;gap:6px;padding:6px 14px;font-size:.8rem;font-weight:600;display:inline-flex}.btn-action:hover{background-color:#ffffff1a;border-color:#fff3}.btn-action svg{opacity:.7}.btn-warning-action{color:#fbbf24;background-color:#fbbf241a}.btn-warning-action:hover{background-color:#fbbf2433;border-color:#fbbf244d}.btn-warning-action svg{color:#fbbf24}.btn-danger-action{color:#f87171;background-color:#f871711a}.btn-danger-action:hover{background-color:#f8717133;border-color:#f871714d}.btn-danger-action svg{color:#f87171}