.sidebar-upgrade{position:relative;width:var(--sidebar-w);background:var(--bg-base, #f3f4f6);border-right:1px solid var(--border-subtle, #e5e7eb);min-height:100vh;color:var(--text-primary, #1f2937);display:flex;flex-direction:column}.sidebar-logo{height:72px;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--border-subtle, #e5e7eb);font-family:var(--font-display, "Fraunces", Georgia, serif);font-size:20px;font-weight:700;letter-spacing:-.02em;color:var(--text-primary, #1f2937)}.sidebar-logo span{background:linear-gradient(135deg,var(--accent, #6366f1),oklch(50% .18 240));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.sidebar-nav{flex:1;padding:var(--space-sm) 0;overflow-y:auto}.sidebar-section{padding:var(--space-xs) var(--space-md) var(--space-2xs);font-family:var(--font-ui);font-size:.69rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-tertiary)}.nav-item{display:flex;align-items:center;gap:var(--space-xs);padding:10px var(--space-md);margin:2px var(--space-xs);font-size:var(--text-sm);color:var(--text-secondary);cursor:pointer;border-radius:var(--radius-sm);transition:all .18s var(--ease-out);text-decoration:none;border:none;background:none;width:calc(100% - var(--space-sm));text-align:left;font-family:var(--font-ui);font-weight:var(--fw-medium)}.nav-item:hover{background:#0000000a;color:var(--text-primary)}.nav-item.active{background:var(--accent-dim);color:var(--accent);font-weight:var(--fw-semibold)}.nav-icon{width:20px;height:20px;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}.nav-badge{margin-left:auto;padding:1px 8px;font-size:var(--text-xs);font-weight:var(--fw-semibold);border-radius:var(--radius-full);background:var(--accent-dim);color:var(--accent)}.sidebar-toggle-btn{background:var(--bg-elevated);border:1px solid var(--border-subtle);color:var(--text-secondary);cursor:pointer;padding:4px 8px;border-radius:var(--radius-sm);font-size:14px;margin-left:auto;display:flex;align-items:center;transition:all .2s var(--ease-out)}.sidebar-toggle-btn:hover{background:var(--bg-raised);border-color:var(--border-mid);color:var(--text-primary)}.sidebar-footer{padding:var(--space-md);border-top:1px solid var(--border-subtle);background:var(--bg-base);flex-shrink:0}.sidebar-user{display:flex;align-items:center;gap:var(--space-xs)}.sidebar-avatar{width:32px;height:32px;border-radius:var(--radius-sm);background:linear-gradient(135deg,var(--accent),oklch(50% .18 240));display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}.sidebar-username{font-size:var(--text-sm);font-weight:var(--fw-medium);color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-role{font-size:var(--text-xs);color:var(--text-tertiary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-collapsed{width:64px!important;min-width:64px!important}.card-upgrade{background:var(--bg-raised);border-radius:var(--radius-lg);border:1px solid var(--border-subtle);box-shadow:var(--shadow-sm);transition:all .3s var(--ease-out)}.card-upgrade:hover{box-shadow:var(--shadow-md)}.card-header-upgrade{padding:var(--space-sm) var(--space-md);border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between}.card-header-upgrade h3{font-family:var(--font-display);font-size:1.2rem;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:var(--space-2xs)}.card-body-upgrade{padding:var(--space-md)}.stat-card{background:var(--bg-raised);border-radius:var(--radius-md);padding:var(--space-md);border:1px solid var(--border-subtle);position:relative;overflow:hidden}.stat-card:before{content:"";position:absolute;top:0;left:0;width:3px;height:100%;background:linear-gradient(180deg,var(--accent),oklch(50% .18 240))}.stat-card .icon-wrapper{width:48px;height:48px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:var(--space-sm)}.stat-card .icon-wrapper.purple{background:var(--accent-dim);color:var(--accent)}.stat-card .icon-wrapper.blue{background:#0079b314;background:oklch(55% .15 240 / .08);color:#0079b3;color:oklch(55% .15 240)}.stat-card .icon-wrapper.green{background:var(--green-dim);color:var(--green)}.stat-card .icon-wrapper.orange{background:var(--yellow-dim);color:#bf8100;color:oklch(65% .18 75)}.stat-card .stat-value{font-family:var(--font-display);font-size:2rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--space-3xs);line-height:1.1}.stat-card .stat-label{font-family:var(--font-ui);font-size:.875rem;color:var(--text-secondary)}.stat-card .stat-trend{position:absolute;top:var(--space-md);right:var(--space-md);font-size:.81rem;font-weight:600}.stat-card .stat-trend.up{color:var(--green)}.stat-card .stat-trend.down{color:var(--red)}.action-card{background:var(--bg-raised);border-radius:var(--radius-lg);padding:var(--space-sm);cursor:pointer;transition:all .3s var(--ease-out);border:1px solid var(--border-subtle);text-align:center}.action-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--border-mid)}.action-card .icon-wrapper{width:64px;height:64px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:28px;margin:0 auto var(--space-sm);transition:transform .3s var(--ease-out)}.action-card:hover .icon-wrapper{transform:scale(1.1)}.action-card.purple .icon-wrapper{background:var(--accent);color:#fff;box-shadow:0 2px 12px var(--accent-glow)}.action-card.blue .icon-wrapper{background:#0079b3;background:oklch(55% .15 240);color:#fff;box-shadow:0 2px 12px #0079b340;box-shadow:0 2px 12px oklch(55% .15 240 / .25)}.action-card.green .icon-wrapper{background:var(--green);color:#fff;box-shadow:0 2px 12px var(--green-glow)}.action-card.orange .icon-wrapper{background:#d38f00;background:oklch(70% .18 75);color:#fff;box-shadow:0 2px 12px #d38f0040;box-shadow:0 2px 12px oklch(70% .18 75 / .25)}.action-card .title{font-family:var(--font-display);font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--space-3xs)}.action-card .desc{font-family:var(--font-ui);font-size:.81rem;color:var(--text-secondary)}.btn-primary-upgrade{background:var(--accent);border:none;border-radius:var(--radius-md);padding:10px 22px;font-family:var(--font-ui);font-weight:600;color:#fff;cursor:pointer;transition:all .2s var(--ease-out);display:inline-flex;align-items:center;gap:var(--space-2xs);box-shadow:0 2px 12px var(--accent-glow)}.btn-primary-upgrade:hover{transform:translateY(-1px);box-shadow:0 4px 20px var(--accent-glow)}.btn-secondary-upgrade{background:var(--bg-raised);border:1px solid var(--border-mid);border-radius:var(--radius-md);padding:10px 22px;font-family:var(--font-ui);font-weight:500;color:var(--text-primary);cursor:pointer;transition:all .2s var(--ease-out)}.btn-secondary-upgrade:hover{border-color:var(--accent);color:var(--accent)}.table-upgrade{width:100%;border-collapse:separate;border-spacing:0}.table-upgrade th{background:var(--bg-base);padding:var(--space-xs) var(--space-sm);text-align:left;font-family:var(--font-ui);font-weight:600;font-size:.75rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.06em;border-bottom:1px solid var(--border-subtle)}.table-upgrade td{padding:var(--space-xs) var(--space-sm);border-bottom:1px solid var(--border-subtle)}.table-upgrade tr:hover td{background:#00000005}.tag-upgrade{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--radius-full);font-family:var(--font-ui);font-size:.75rem;font-weight:600}.tag-upgrade.easy{background:var(--green-dim);color:var(--green)}.tag-upgrade.medium{background:#0079b314;background:oklch(55% .15 240 / .08);color:#0079b3;color:oklch(55% .15 240)}.tag-upgrade.hard{background:var(--yellow-dim);color:#906b00;color:oklch(55% .15 85)}.tag-upgrade.expert{background:var(--red-dim);color:var(--red)}.progress-upgrade{height:8px;background:var(--bg-base);border-radius:var(--radius-full);overflow:hidden}.progress-upgrade .bar{height:100%;border-radius:var(--radius-full);transition:width .5s var(--ease-out-expo)}.progress-upgrade .bar.low{background:linear-gradient(90deg,var(--red),oklch(68% .18 25))}.progress-upgrade .bar.medium{background:linear-gradient(90deg,var(--yellow),oklch(82% .15 85))}.progress-upgrade .bar.high{background:linear-gradient(90deg,var(--green),oklch(62% .16 160))}.wrong-question-card{background:var(--bg-raised);border-radius:var(--radius-md);padding:var(--space-sm);margin-bottom:var(--space-xs);transition:all .2s var(--ease-out);border:1px solid var(--border-subtle);border-left:4px solid var(--red)}.wrong-question-card:hover{box-shadow:var(--shadow-md);border-color:var(--border-mid);border-left-color:var(--red)}.wrong-question-card.mastered{border-left-color:var(--green)}.mastery-indicator{display:flex;align-items:center;gap:var(--space-2xs)}.mastery-ring{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--font-ui);font-size:.875rem;font-weight:700}.mastery-ring.low{background:var(--red-dim);color:var(--red)}.mastery-ring.medium{background:var(--yellow-dim);color:#906b00;color:oklch(55% .15 85)}.mastery-ring.high{background:var(--green-dim);color:var(--green)}.exambox-layout{display:flex;height:100vh;overflow:hidden}.exambox-sidebar-desktop{flex-shrink:0;height:100vh;overflow-y:auto}.exambox-main-content{flex:1;overflow-y:auto;background:var(--bg-deep);padding:var(--space-md)}.exambox-mobile-header{display:none;position:fixed;top:0;left:0;right:0;z-index:999;background:var(--bg-base);border-bottom:1px solid var(--border-subtle);box-shadow:var(--shadow-sm)}.exambox-mobile-header-inner{display:flex;align-items:center;justify-content:space-between;padding:var(--space-xs) var(--space-sm)}.exambox-mobile-logo{font-family:var(--font-display);font-size:18px;font-weight:700;background:linear-gradient(135deg,var(--accent),oklch(50% .18 240));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.exambox-mobile-menu-btn{background:var(--bg-elevated);border:1px solid var(--border-subtle);color:var(--text-primary);width:36px;height:36px;border-radius:var(--radius-sm);font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s var(--ease-out)}.exambox-mobile-menu-btn:hover{background:var(--bg-raised);border-color:var(--border-mid)}.exambox-mobile-drawer .ant-drawer-body{padding:0!important}.glass{background:#ffffffb8;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid oklch(100% 0 0 / .3);box-shadow:0 8px 32px #0000000f}.glass-strong{background:#ffffffd9;backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid oklch(100% 0 0 / .4);box-shadow:0 8px 32px #00000014}.glass-dark{background:#070b14bf;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid oklch(100% 0 0 / .1);color:#fff}.glass-card{background:#fff9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid oklch(100% 0 0 / .3);border-radius:var(--radius-lg);box-shadow:0 4px 24px #0000000a;transition:all .3s var(--ease-out)}.glass-card:hover{box-shadow:0 8px 32px var(--accent-glow);transform:translateY(-2px);border-color:#00809033;border-color:oklch(55% .18 210 / .2)}.glass-input{background:#fff9;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid oklch(100% 0 0 / .3);border-radius:var(--radius-md);transition:all .2s var(--ease-out)}.glass-input:focus{background:#fffc;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-dim)}.bg-gradient-primary{background:linear-gradient(135deg,var(--accent),oklch(50% .18 240),oklch(60% .16 260))}.bg-gradient-mesh{background:radial-gradient(at 20% 20%,oklch(55% .18 210 / .15) 0%,transparent 50%),radial-gradient(at 80% 80%,oklch(50% .18 240 / .1) 0%,transparent 50%),radial-gradient(at 50% 50%,oklch(60% .16 260 / .05) 0%,transparent 70%),var(--bg-deep)}@keyframes countUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.animate-count{animation:countUp .4s var(--ease-out) forwards}.stagger-children>*{opacity:0;animation:countUp .3s var(--ease-out) forwards}.stagger-children>*:nth-child(1){animation-delay:0ms}.stagger-children>*:nth-child(2){animation-delay:60ms}.stagger-children>*:nth-child(3){animation-delay:.12s}.stagger-children>*:nth-child(4){animation-delay:.18s}.stagger-children>*:nth-child(5){animation-delay:.24s}.stagger-children>*:nth-child(6){animation-delay:.3s}@media(max-width:1024px){.exambox-sidebar-desktop{display:none}.exambox-mobile-header{display:block}.exambox-main-content{margin-top:60px;padding:var(--space-sm)}.sidebar-upgrade{display:none!important}}@media(max-width:768px){.exambox-main-content{margin-top:60px;padding:var(--space-xs)}.sidebar-upgrade{display:none!important}}.exambox-mobile-drawer .sidebar-upgrade{min-height:100vh;display:flex!important;flex-direction:column}.dashboard-hero{background:linear-gradient(135deg,var(--accent),oklch(50% .18 240));border-radius:var(--radius-lg);padding:28px 32px;margin-bottom:20px;color:#fff;position:relative;overflow:hidden}.hero-btn-primary{background:var(--bg-raised)!important;color:var(--accent)!important;border:none!important;font-weight:600!important;height:44px!important;border-radius:var(--radius-md)!important;display:inline-flex!important;align-items:center!important}.hero-btn-primary:hover{background:#ffffffe6!important}.hero-btn-ghost{background:transparent!important;border:1px solid oklch(100% 0 0 / .3)!important;color:#fff!important;height:44px!important;border-radius:var(--radius-md)!important;display:inline-flex!important;align-items:center!important}.hero-btn-ghost:hover{background:#ffffff26!important}.hero-watermark{position:absolute;right:30px;top:50%;transform:translateY(-50%);font-size:100px;opacity:.08}.card-section-title{font-size:16px;font-weight:600;margin:0 0 16px;display:flex;align-items:center;gap:6px;color:var(--text-primary)}.quick-action-card{background:linear-gradient(135deg,var(--bg-base),var(--bg-elevated));border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:16px 12px;text-align:center;cursor:pointer;transition:all .2s var(--ease-out)}.quick-action-card:hover{border-color:var(--border-mid);box-shadow:var(--shadow-sm)}.quick-action-icon{width:40px;height:40px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;margin:0 auto 10px}.quick-action-title{font-weight:600;font-size:13px;color:var(--text-primary);margin-bottom:2px}.quick-action-desc{font-size:11px;color:var(--text-tertiary)}.tip-card{padding:14px;border-radius:var(--radius-md);display:flex;align-items:center;gap:10px;flex-wrap:wrap}.tip-card.tip-warning{background:var(--yellow-dim);border:1px solid oklch(78% .15 85 / .2)}.tip-card.tip-success{background:var(--green-dim);border:1px solid oklch(58% .16 145 / .2)}.tip-icon{font-size:22px;flex-shrink:0}.wrong-stat-card{text-align:center;padding:14px;border-radius:var(--radius-md)}.wrong-stat-card.wrong-mastered{background:var(--green-dim)}.wrong-stat-card.wrong-pending{background:var(--red-dim)}.wrong-stat-value{font-size:26px;font-weight:700}.wrong-stat-label{font-size:12px;color:var(--text-secondary);margin-top:2px}.paper-list-header{padding:14px 18px;border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between}.paper-list-item{padding:10px 18px;display:flex;align-items:center;gap:10px;cursor:pointer;transition:background .2s}.paper-list-item:hover{background:var(--bg-base)}.paper-year-badge{width:34px;height:34px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:12px;flex-shrink:0}.paper-list-title{display:block;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}*,*:before,*:after{box-sizing:border-box}body{margin:0;padding:0;font-family:Plus Jakarta Sans,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--bg-deep, oklch(98% .003 250));color:var(--text-primary, oklch(15% .005 260))}#root{min-height:100vh}.ant-btn-primary{background:var(--accent)!important;border-color:var(--accent)!important}.ant-btn-primary:hover{background:#00707e!important;background:oklch(50% .18 210)!important;border-color:#00707e!important;border-color:oklch(50% .18 210)!important}.ant-tabs-tab-active .ant-tabs-tab-btn{color:var(--accent)!important}.ant-tabs-ink-bar{background:var(--accent)!important}.ant-progress-bg{background:linear-gradient(90deg,var(--accent),oklch(68% .18 230))!important}.ant-card{border-radius:16px!important}.ant-modal-content{border-radius:16px!important;overflow:hidden}.ant-table-thead>tr>th{background:var(--bg-base)!important;font-weight:600!important;font-size:12px!important;text-transform:uppercase;letter-spacing:.5px;color:var(--text-secondary)!important;border-bottom:1px solid var(--border-subtle)!important}.ant-table-tbody>tr:hover>td{background:var(--accent-dim)!important}.ant-pagination-item-active{border-color:var(--accent)!important;background:var(--accent)!important}.ant-pagination-item-active a{color:#fff!important}.ant-drawer-body{padding:0!important}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-mid);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}:root{--bg-deep: oklch(98% .003 250);--bg-base: oklch(96% .003 250);--bg-raised: oklch(100% 0 0);--bg-elevated: oklch(97% .006 250);--text-primary: oklch(15% .005 260);--text-secondary: oklch(38% .01 260);--text-tertiary: oklch(55% .01 260);--accent: oklch(55% .18 210);--accent-glow: oklch(55% .18 210 / .25);--accent-dim: oklch(55% .18 210 / .08);--green: oklch(58% .16 145);--green-glow: oklch(58% .16 145 / .2);--green-dim: oklch(58% .16 145 / .08);--red: oklch(62% .2 25);--red-dim: oklch(62% .2 25 / .08);--yellow: oklch(78% .15 85);--yellow-dim: oklch(78% .15 85 / .08);--border-subtle: oklch(0% 0 0 / .06);--border-mid: oklch(0% 0 0 / .1);--font-display: "Fraunces", "Georgia", serif;--font-ui: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;--space-3xs: 4px;--space-2xs: 8px;--space-xs: 12px;--space-sm: 16px;--space-md: 24px;--space-lg: 40px;--space-xl: 64px;--space-2xl: 96px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--ease-out: cubic-bezier(.16, 1, .3, 1);--ease-out-expo: cubic-bezier(.19, 1, .22, 1);--sidebar-w: 280px;--shadow-sm: 0 1px 2px 0 oklch(0% 0 0 / .05);--shadow: 0 1px 3px 0 oklch(0% 0 0 / .1), 0 1px 2px -1px oklch(0% 0 0 / .1);--shadow-md: 0 4px 6px -1px oklch(0% 0 0 / .1), 0 2px 4px -2px oklch(0% 0 0 / .1);--shadow-lg: 0 10px 15px -3px oklch(0% 0 0 / .1), 0 4px 6px -4px oklch(0% 0 0 / .1);--shadow-xl: 0 20px 25px -5px oklch(0% 0 0 / .1), 0 8px 10px -6px oklch(0% 0 0 / .1);--exambox-indigo: oklch(55% .18 210);--exambox-violet: oklch(50% .18 240);--exambox-primary: oklch(55% .18 210);--exambox-primary-hover: oklch(50% .18 210);--exambox-primary-light: oklch(55% .18 210 / .1);--exambox-success: oklch(58% .16 145);--exambox-success-light: oklch(58% .16 145 / .1);--exambox-warning: oklch(78% .15 85);--exambox-warning-light: oklch(78% .15 85 / .1);--exambox-danger: oklch(62% .2 25);--exambox-danger-light: oklch(62% .2 25 / .1);--exambox-info: oklch(55% .18 210);--exambox-info-light: oklch(55% .18 210 / .1);--exambox-gray-50: oklch(97% .003 250);--exambox-gray-100: oklch(96% .003 250);--exambox-gray-200: oklch(92% .005 250);--exambox-gray-300: oklch(85% .008 250);--exambox-gray-400: oklch(65% .01 250);--exambox-gray-500: oklch(55% .01 250);--exambox-gray-600: oklch(42% .01 250);--exambox-gray-700: oklch(30% .008 250);--exambox-gray-800: oklch(22% .008 250);--exambox-gray-900: oklch(15% .005 260);--exambox-gradient: linear-gradient(135deg, oklch(55% .18 210), oklch(50% .18 240));--exambox-gradient-hover: linear-gradient(135deg, oklch(50% .18 210), oklch(45% .18 240));--exambox-shadow-sm: var(--shadow-sm);--exambox-shadow: var(--shadow);--exambox-shadow-md: var(--shadow-md);--exambox-shadow-lg: var(--shadow-lg);--exambox-shadow-xl: var(--shadow-xl);--exambox-radius-sm: var(--radius-sm);--exambox-radius: 8px;--exambox-radius-md: var(--radius-md);--exambox-radius-lg: var(--radius-lg);--exambox-radius-xl: var(--radius-xl);--exambox-space-1: var(--space-3xs);--exambox-space-2: var(--space-2xs);--exambox-space-3: var(--space-xs);--exambox-space-4: var(--space-sm);--exambox-space-5: 20px;--exambox-space-6: var(--space-md);--exambox-space-8: 32px;--exambox-space-10: var(--space-lg);--primary-color: oklch(55% .18 210);--primary-hover: oklch(50% .18 210);--secondary-color: oklch(50% .18 240);--success-color: oklch(58% .16 145);--warning-color: oklch(78% .15 85);--danger-color: oklch(62% .2 25);--text-primary-var: oklch(15% .005 260);--text-secondary-var: oklch(38% .01 260);--bg-primary: oklch(96% .003 250);--bg-card: oklch(100% 0 0);--border-color: oklch(0% 0 0 / .06)}:root[data-theme=dark]{--bg-deep: oklch(15% .008 260);--bg-base: oklch(18% .009 260);--bg-raised: oklch(24% .01 260);--bg-elevated: oklch(22% .01 260);--text-primary: oklch(96% .005 260);--text-secondary: oklch(78% .01 260);--text-tertiary: oklch(60% .01 260);--border-subtle: oklch(100% 0 0 / .1);--border-mid: oklch(100% 0 0 / .16);--shadow-sm: 0 1px 2px 0 oklch(0% 0 0 / .4);--shadow: 0 1px 3px 0 oklch(0% 0 0 / .5), 0 1px 2px -1px oklch(0% 0 0 / .5);--shadow-md: 0 4px 6px -1px oklch(0% 0 0 / .5), 0 2px 4px -2px oklch(0% 0 0 / .5);--shadow-lg: 0 10px 15px -3px oklch(0% 0 0 / .5), 0 4px 6px -4px oklch(0% 0 0 / .5);--shadow-xl: 0 20px 25px -5px oklch(0% 0 0 / .5), 0 8px 10px -6px oklch(0% 0 0 / .5);--exambox-gray-50: oklch(22% .008 260);--exambox-gray-100: oklch(22% .008 260);--exambox-gray-200: oklch(26% .01 260);--exambox-gray-300: oklch(34% .01 260);--exambox-gray-400: oklch(55% .01 260);--exambox-gray-500: oklch(65% .01 260);--exambox-gray-600: oklch(78% .01 260);--exambox-gray-700: oklch(85% .008 260);--exambox-gray-800: oklch(92% .006 260);--exambox-gray-900: oklch(96% .005 260);--bg-primary: oklch(18% .009 260);--bg-card: oklch(24% .01 260);--border-color: oklch(100% 0 0 / .12)}:root[data-theme=dark] body:before{background:radial-gradient(ellipse 60% 50% at 15% 20%,oklch(55% .18 210 / .1) 0%,transparent 70%),radial-gradient(ellipse 50% 40% at 85% 80%,oklch(58% .16 145 / .07) 0%,transparent 70%),radial-gradient(ellipse 40% 30% at 50% 50%,oklch(50% .18 240 / .05) 0%,transparent 70%)}:root[data-theme=dark] body{background-color:#090b0f;color:var(--text-primary)}body{position:relative}body:before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:radial-gradient(ellipse 60% 50% at 15% 20%,oklch(55% .18 210 / .04) 0%,transparent 70%),radial-gradient(ellipse 50% 40% at 85% 80%,oklch(58% .16 145 / .03) 0%,transparent 70%),radial-gradient(ellipse 40% 30% at 50% 50%,oklch(50% .18 240 / .02) 0%,transparent 70%)}.text-2xl{font-family:var(--font-display);font-size:clamp(2.2rem,2rem + 1vw,4rem);font-weight:700;line-height:1.15;letter-spacing:-.02em}.text-xl{font-family:var(--font-display);font-size:clamp(1.6rem,1.4rem + .8vw,2.5rem);font-weight:600;line-height:1.2;letter-spacing:-.01em}.text-lg{font-family:var(--font-display);font-size:clamp(1.2rem,1.1rem + .4vw,1.5rem);font-weight:600;line-height:1.3}.text-md{font-family:var(--font-display);font-size:clamp(1.06rem,1rem + .2vw,1.2rem);font-weight:500;line-height:1.4}.text-base{font-family:var(--font-ui);font-size:clamp(.94rem,.9rem + .15vw,1rem);font-weight:400;line-height:1.6}.text-sm{font-family:var(--font-ui);font-size:clamp(.81rem,.78rem + .1vw,.875rem);font-weight:400;line-height:1.5}.text-xs{font-family:var(--font-ui);font-size:clamp(.69rem,.65rem + .1vw,.75rem);font-weight:500;line-height:1.4;letter-spacing:.02em}.card{background:var(--bg-raised);border-radius:var(--radius-lg);border:1px solid var(--border-subtle);box-shadow:var(--shadow-sm);transition:all .3s var(--ease-out)}.card:hover{background:var(--bg-elevated);border-color:var(--border-mid);box-shadow:var(--shadow-md)}.card-accent{background:var(--bg-raised);border-radius:var(--radius-lg);border:1px solid var(--border-subtle);border-left:3px solid var(--accent);box-shadow:var(--shadow-sm);transition:all .3s var(--ease-out)}.card-accent:hover{background:var(--bg-elevated);border-color:var(--border-mid);border-left-color:var(--accent);box-shadow:var(--shadow-md)}.exambox-card{background:var(--bg-raised);border-radius:var(--radius-lg);border:1px solid var(--border-subtle);box-shadow:var(--shadow-sm);transition:all .3s var(--ease-out)}.exambox-card:hover{box-shadow:var(--shadow-md)}.exambox-card-header{padding:var(--space-sm) var(--space-md);border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between}.exambox-card-body{padding:var(--space-md)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2xs);padding:10px 22px;font-family:var(--font-ui);font-size:.875rem;font-weight:600;border-radius:var(--radius-md);border:none;cursor:pointer;transition:all .2s var(--ease-out);outline:none}.btn:hover{transform:translateY(-1px)}.btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.btn-primary{background:var(--accent);color:#fff;box-shadow:0 2px 12px var(--accent-glow)}.btn-primary:hover{box-shadow:0 4px 20px var(--accent-glow);transform:translateY(-1px)}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border-mid)}.btn-ghost:hover{background:var(--bg-elevated);color:var(--text-primary);border-color:var(--border-mid)}.btn-green{background:var(--green);color:#fff;box-shadow:0 2px 12px var(--green-glow)}.btn-green:hover{box-shadow:0 4px 20px var(--green-glow);transform:translateY(-1px)}.btn-danger{background:var(--red);color:#fff}.btn-sm{padding:6px 14px;font-size:.81rem}.btn-lg{padding:14px 32px;font-size:1rem}.exambox-btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2xs);padding:10px 22px;font-family:var(--font-ui);font-size:.875rem;font-weight:600;border-radius:var(--radius-md);border:none;cursor:pointer;transition:all .2s var(--ease-out)}.exambox-btn-primary{background:var(--accent);color:#fff;box-shadow:0 2px 12px var(--accent-glow)}.exambox-btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 20px var(--accent-glow)}.exambox-btn-secondary{background:var(--bg-raised);color:var(--text-secondary);border:1px solid var(--border-mid)}.exambox-btn-secondary:hover{border-color:var(--accent);color:var(--accent)}.exambox-btn-ghost{background:transparent;color:var(--text-secondary)}.exambox-btn-ghost:hover{background:var(--bg-elevated);color:var(--text-primary)}.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--radius-full);font-family:var(--font-ui);font-size:.75rem;font-weight:600;letter-spacing:.02em}.badge-accent{background:var(--accent-dim);color:var(--accent)}.badge-green{background:var(--green-dim);color:var(--green)}.badge-red{background:var(--red-dim);color:var(--red)}.badge-yellow{background:var(--yellow-dim);color:#906b00;color:oklch(55% .15 85)}.exambox-badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--radius-full);font-size:.75rem;font-weight:600}.exambox-badge-success{background:var(--green-dim);color:var(--green)}.exambox-badge-warning{background:var(--yellow-dim);color:#906b00;color:oklch(55% .15 85)}.exambox-badge-danger{background:var(--red-dim);color:var(--red)}.exambox-badge-info{background:var(--accent-dim);color:var(--accent)}.form-input,.form-select,.form-textarea,.exambox-input{width:100%;padding:var(--space-xs) var(--space-sm);font-family:var(--font-ui);font-size:.94rem;background:var(--bg-base);border:1px solid var(--border-mid);border-radius:var(--radius-sm);color:var(--text-primary);transition:all .2s var(--ease-out);outline:none}.form-input:focus,.form-select:focus,.form-textarea:focus,.exambox-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-dim)}.form-input::placeholder,.form-textarea::placeholder,.exambox-input::placeholder{color:var(--text-tertiary)}.form-label{display:block;font-family:var(--font-ui);font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary);margin-bottom:var(--space-3xs)}.progress{width:100%;height:8px;background:var(--bg-base);border-radius:var(--radius-full);overflow:hidden}.progress-fill{height:100%;border-radius:var(--radius-full);background:linear-gradient(90deg,var(--accent),oklch(68% .18 230));transition:width .5s var(--ease-out-expo)}.progress-green .progress-fill{background:linear-gradient(90deg,var(--green),oklch(60% .16 160))}.exambox-progress{width:100%;height:8px;background:var(--bg-base);border-radius:var(--radius-full);overflow:hidden}.exambox-progress-bar{height:100%;border-radius:var(--radius-full);background:linear-gradient(90deg,var(--accent),oklch(68% .18 230));transition:width .5s var(--ease-out-expo)}.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#00adb4,#00b2ab,#00b89c 50%,#4ac06c);background:linear-gradient(135deg,color(xyz 0.203 0.342 0.576),color(xyz 0.208 0.357 0.47),color(xyz 0.216 0.372 0.374) 50%,#4ac06c);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--font-ui);font-weight:700;font-size:16px}.avatar-sm{width:32px;height:32px;font-size:14px}.avatar-lg{width:56px;height:56px;font-size:20px}.exambox-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#00adb4,#00b2ab,#00b89c 50%,#4ac06c);background:linear-gradient(135deg,color(xyz 0.203 0.342 0.576),color(xyz 0.208 0.357 0.47),color(xyz 0.216 0.372 0.374) 50%,#4ac06c);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px}.exambox-avatar-sm{width:32px;height:32px;font-size:14px}.exambox-avatar-lg{width:56px;height:56px;font-size:20px}.table-wrap{border:1px solid var(--border-subtle);border-radius:var(--radius-md);overflow:hidden}.table-wrap thead{background:var(--bg-base)}.table-wrap th{font-family:var(--font-ui);font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary);padding:var(--space-xs) var(--space-sm);text-align:left;border-bottom:1px solid var(--border-subtle)}.table-wrap td{padding:var(--space-xs) var(--space-sm);border-bottom:1px solid var(--border-subtle);color:var(--text-primary)}.table-wrap tbody tr:hover td{background:#00000005}.tabs{display:flex;gap:0;border-bottom:1px solid var(--border-subtle)}.tab{padding:var(--space-xs) var(--space-sm);font-family:var(--font-ui);font-size:.875rem;font-weight:500;color:var(--text-tertiary);border:none;background:none;cursor:pointer;border-bottom:2px solid transparent;transition:all .2s var(--ease-out)}.tab:hover{color:var(--text-primary)}.tab.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}.alert{padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);border:1px solid transparent;font-family:var(--font-ui);font-size:.875rem}.alert-info{background:var(--accent-dim);border-color:#00809033;border-color:oklch(55% .18 210 / .2);color:var(--accent)}.alert-success{background:var(--green-dim);border-color:#29923633;color:var(--green)}.alert-warning{background:var(--yellow-dim);border-color:#e3ae2833;color:#7e5e00;color:oklch(50% .15 85)}.alert-error{background:var(--red-dim);border-color:#e6434333;color:var(--red)}.chat-incoming{background:var(--bg-base);border:1px solid var(--border-subtle);border-radius:var(--radius-lg) var(--radius-lg) var(--radius-lg) 3px;padding:var(--space-sm);max-width:80%}.chat-outgoing{background:var(--accent-dim);border:1px solid oklch(55% .18 210 / .2);border-radius:var(--radius-lg) var(--radius-lg) 3px var(--radius-lg);padding:var(--space-sm);max-width:80%;margin-left:auto}.empty-state{text-align:center;padding:var(--space-2xl) var(--space-lg)}.empty-state .icon{font-size:48px;opacity:.6;margin-bottom:var(--space-sm)}.empty-state .title{font-family:var(--font-display);font-size:1.2rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--space-3xs)}.empty-state .desc{font-family:var(--font-ui);font-size:.75rem;color:var(--text-tertiary)}.toast{position:fixed;bottom:24px;right:24px;z-index:10000;background:var(--bg-elevated);border:1px solid var(--border-mid);border-radius:var(--radius-md);padding:var(--space-sm) var(--space-md);box-shadow:var(--shadow-lg);animation:toastIn .3s var(--ease-out)}@keyframes toastIn{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-md)}.stats-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-md)}.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--space-md)}.grid-2col{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-md)}.grid-3col,.plan-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-md)}.kpi-row{display:flex;gap:var(--space-md)}.kpi-row>*{flex:1}.exambox-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-md)}.exambox-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-md)}.exambox-grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-md)}.exambox-page{padding:var(--space-md)}.exambox-section{margin-bottom:var(--space-md)}.text-center{text-align:center}.text-right{text-align:right}.text-accent{color:var(--accent)}.text-green{color:var(--green)}.text-danger{color:var(--red)}.text-warning{color:var(--yellow)}.text-muted{color:var(--text-tertiary)}.mt-1{margin-top:var(--space-3xs)}.mt-2{margin-top:var(--space-2xs)}.mt-3{margin-top:var(--space-xs)}.mt-4{margin-top:var(--space-sm)}.mt-6{margin-top:var(--space-md)}.mb-1{margin-bottom:var(--space-3xs)}.mb-2{margin-bottom:var(--space-2xs)}.mb-3{margin-bottom:var(--space-xs)}.mb-4{margin-bottom:var(--space-sm)}.mb-6{margin-bottom:var(--space-md)}.flex{display:flex}.flex-center{display:flex;align-items:center;justify-content:center}.flex-between{display:flex;align-items:center;justify-content:space-between}.flex-gap-2{gap:var(--space-2xs)}.flex-gap-4{gap:var(--space-sm)}.exambox-text-center{text-align:center}.exambox-text-right{text-align:right}.exambox-text-primary{color:var(--accent)}.exambox-text-success{color:var(--green)}.exambox-text-danger{color:var(--red)}.exambox-text-warning{color:var(--yellow)}.exambox-text-muted{color:var(--text-tertiary)}.exambox-mt-1{margin-top:var(--space-3xs)}.exambox-mt-2{margin-top:var(--space-2xs)}.exambox-mt-3{margin-top:var(--space-xs)}.exambox-mt-4{margin-top:var(--space-sm)}.exambox-mt-6{margin-top:var(--space-md)}.exambox-mb-1{margin-bottom:var(--space-3xs)}.exambox-mb-2{margin-bottom:var(--space-2xs)}.exambox-mb-3{margin-bottom:var(--space-xs)}.exambox-mb-4{margin-bottom:var(--space-sm)}.exambox-mb-6{margin-bottom:var(--space-md)}.exambox-flex{display:flex}.exambox-flex-center{display:flex;align-items:center;justify-content:center}.exambox-flex-between{display:flex;align-items:center;justify-content:space-between}.exambox-flex-gap-2{gap:var(--space-2xs)}.exambox-flex-gap-4{gap:var(--space-sm)}@keyframes pageIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeOut{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-10px)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.animate-fade-in{animation:fadeIn .3s var(--ease-out) forwards}.animate-slide-in{animation:slideInRight .3s var(--ease-out) forwards}@media(max-width:900px){.stats-grid{grid-template-columns:repeat(2,1fr)}.grid-2col,.grid-3col,.plan-cards{grid-template-columns:1fr}.kpi-row{flex-wrap:wrap}}@media(max-width:500px){.stats-grid{grid-template-columns:1fr}}@media(max-width:1024px){.exambox-grid-4,.exambox-grid-3{grid-template-columns:repeat(2,1fr)}}@media(max-width:768px){.exambox-grid-4,.exambox-grid-3,.exambox-grid-2{grid-template-columns:1fr}.exambox-page{padding:var(--space-xs)}}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff) 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