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#182030}}.admin-glass{background:var(--admin-surface-1);border:1px solid var(--admin-border-soft);box-shadow:var(--admin-shadow);backdrop-filter:blur(var(--admin-glass-blur));-webkit-backdrop-filter:blur(var(--admin-glass-blur))}.admin-glass--soft{background:#131924bf;border:1px solid var(--admin-border-soft);box-shadow:var(--admin-shadow);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.admin-glass--strong{background:#182030eb;border:1px solid var(--admin-border-soft);box-shadow:var(--admin-shadow);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.header{position:fixed;top:0;left:0;right:0;z-index:200;height:64px;background:#ffffffeb;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--student-border-soft);box-shadow:0 1px 2px #0f172a08;display:flex;align-items:center;justify-content:space-between;padding:0 1.25rem}@media(min-width:768px){.header{padding:0 1.5rem}}.header--admin{background:#111723d9;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--admin-border-soft);box-shadow:0 1px 3px #00000059;--color-text: var(--admin-text-primary);--color-bg-secondary: var(--admin-surface-solid)}.header--admin .header__logo-text{color:var(--admin-text-primary)}.header--admin .header__lang-btn{border-color:var(--admin-border-soft);color:var(--admin-text-secondary);text-transform:uppercase;font-size:.75rem;font-weight:500;background:#11182780}.header--admin .header__lang-btn:hover{background-color:var(--admin-accent-soft);border-color:var(--admin-accent);color:var(--admin-text-primary)}.header--admin .header__lang-btn.is-active{background:#63a4ff38;border-color:var(--admin-accent);color:#c8e0ff}.header--admin .header__back-btn{color:var(--admin-text-secondary)}.header--admin .header__back-btn:hover{background:#1f2b42b3;color:var(--admin-text-primary)}.header--admin .header__user-btn:hover{background:#182134bf;border-color:var(--admin-border-soft)}.header--admin .header__user-name{color:var(--admin-text-primary)}.header--admin .header__user-chevron{color:var(--admin-text-muted)}.header--admin .header__dropdown{background:#131a28f5;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--admin-border-strong);box-shadow:0 12px 28px -4px #0000008c}.header--admin .header__dropdown-item{color:var(--admin-text-primary)}.header--admin .header__dropdown-item svg{color:var(--admin-text-secondary)}.header--admin .header__dropdown-item:hover{background:#1e2b42b8}.header--admin .header__dropdown-item--danger{color:#f87171}.header--admin .header__dropdown-item--danger svg{color:#f87171}.header--admin .header__dropdown-item--danger:hover{background:#ef444429;color:#fca5a5}.header--admin .header__dropdown-divider{background:var(--admin-border-soft)}.header__left{display:flex;align-items:center;gap:1rem}.header__right{display:flex;align-items:center;gap:.75rem}.header__logo-icon{font-size:1.25rem;color:#fff;background:linear-gradient(135deg,#3b82f6,#2563eb);box-shadow:0 2px 8px -1px #2563eb59;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:.5rem;line-height:1}.header__logo-img{height:32px;object-fit:contain}.header__logo{display:flex;align-items:center;gap:.5rem;text-decoration:none;font-weight:700;font-size:1.25rem;color:#111827}.header__logo:hover{text-decoration:none}.header__logo:hover .header__logo-icon{background:linear-gradient(135deg,#2563eb,#1d4ed8)}.header__logo-text{color:#2563eb;font-weight:700}.header__badge{padding:2px .5rem;font-size:.625rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;background:#fef3c7;color:#92400e;border-radius:9999px;border:1px solid rgba(245,158,11,.2)}.header__back-btn{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem .75rem;border-radius:.5rem;font-size:.875rem;font-weight:500;color:#9ca3af;text-decoration:none;transition:all .15s ease}.header__back-btn svg{width:16px;height:16px;flex-shrink:0}.header__back-btn:hover{background:#ffffff1a;color:#fff;text-decoration:none}.header__lang{display:flex;align-items:center;gap:.25rem}.header__lang-btn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:24px;padding:0;background:transparent;border:1px solid transparent;border-radius:.375rem;font-size:.6875rem;cursor:pointer;transition:all .15s ease;text-transform:uppercase;font-weight:500;color:var(--student-text-muted)}.header__lang-btn:hover{color:var(--student-text-primary);background:#f1f5f9cc}.header__lang-btn.is-active{background:var(--student-accent-soft);border-color:#2563eb33;color:var(--student-accent);font-weight:600}.header__user{position:relative}.header__user-btn{display:flex;align-items:center;gap:.5rem;padding:.25rem .5rem;background:transparent;border:1px solid transparent;border-radius:.5rem;cursor:pointer;transition:all .15s ease}.header__user-btn:focus-visible{outline:none;border-color:var(--student-accent);box-shadow:0 0 0 3px #2563eb24}.header__user-btn:hover{background:#f1f5f9cc}.header__user-avatar{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#3b82f6,#2563eb);box-shadow:0 2px 6px -1px #2563eb4d;color:#fff;font-size:.75rem;font-weight:700;border-radius:9999px;flex-shrink:0;letter-spacing:.02em;overflow:hidden}.header__user-avatar img{width:100%;height:100%;object-fit:cover;border-radius:9999px}.header__user-name{font-size:.875rem;font-weight:500;color:#111827;max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}@media(max-width:639px){.header__user-name{display:none}}.header__user-chevron{width:16px;height:16px;color:#6b7280;flex-shrink:0}.header__dropdown{position:absolute;top:calc(100% + .5rem);right:0;min-width:210px;background:var(--student-surface-overlay);border:1px solid var(--student-border-soft);box-shadow:var(--student-shadow-elevated);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:.75rem;z-index:100;padding:.5rem;overflow:hidden}.header__dropdown-item{display:flex;align-items:center;gap:.75rem;width:100%;padding:.5rem .75rem;background:transparent;border:none;border-radius:.5rem;font-size:.875rem;font-weight:400;color:var(--student-text-primary);text-decoration:none;cursor:pointer;text-align:left;transition:background .15s ease,color .15s ease,transform .15s ease}.header__dropdown-item svg{width:16px;height:16px;color:var(--student-text-muted);flex-shrink:0;transition:color .15s ease}.header__dropdown-item:hover{background:var(--student-accent-soft);color:var(--student-accent);text-decoration:none}.header__dropdown-item:hover svg{color:var(--student-accent)}.header__dropdown-item--danger{color:#dc2626}.header__dropdown-item--danger svg{color:#ef4444}.header__dropdown-item--danger:hover{background:#ef44441a;color:#b91c1c}.header__dropdown-item--danger:hover svg{color:#dc2626}.header--admin .header__user-btn,.header--admin .header__dropdown-item{border:none;box-shadow:none;transform:none}.header__dropdown-divider{height:1px;background:var(--student-border-soft);margin:.5rem 0}.sidebar{position:fixed;top:64px;left:0;bottom:0;width:260px;background:#fff;border-right:1px solid var(--student-border-soft);z-index:299;overflow-y:auto;display:flex;flex-direction:column;scrollbar-width:thin;scrollbar-color:#d1d5db transparent}.sidebar::-webkit-scrollbar{width:6px;height:6px}.sidebar::-webkit-scrollbar-track{background:transparent}.sidebar::-webkit-scrollbar-thumb{background:#94a3b859;border-radius:3px}.sidebar::-webkit-scrollbar-thumb:hover{background:#94a3b899}.sidebar__section.first{padding-top:0!important;border-top:none!important}@media(max-width:1023px){.sidebar{transform:translate(-100%);transition:transform .2s ease;z-index:300;box-shadow:none;background:#fffffffa;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.sidebar.is-open{transform:translate(0);box-shadow:0 12px 32px #0f172a1f}}.sidebar__link--course{margin-left:1rem}.sidebar--admin{background:#0f1523;border-right:1px solid var(--admin-border-soft);box-shadow:none}@media(max-width:1023px){.sidebar--admin{background:#0f1523}}.sidebar--admin .sidebar__section-title{color:var(--admin-text-muted)}.sidebar--admin .sidebar__link{color:var(--admin-text-secondary)}.sidebar--admin .sidebar__link svg{color:var(--admin-text-muted)}.sidebar--admin .sidebar__link:hover{background:#192334a6;color:var(--admin-text-primary)}.sidebar--admin .sidebar__link:hover svg{color:#93c5fd}.sidebar--admin .sidebar__link.is-active{background:#2563eb2e;color:#93c5fd;border:1px solid rgba(96,165,250,.25);box-shadow:none}.sidebar--admin .sidebar__link.is-active svg{color:#93c5fd}.sidebar__nav{padding:1rem .75rem;display:flex;flex-direction:column;gap:.25rem;flex:1}.sidebar__section{margin-top:1rem}.sidebar__section:not(:first-child){padding-top:.75rem;border-top:1px solid rgba(241,245,249,.8)}.sidebar--admin .sidebar__section:not(:first-child){border-top-color:var(--admin-border-soft)}.sidebar__section-title{display:block;padding:0 .65rem;margin-bottom:.35rem;font-size:.6875rem;font-weight:600;color:var(--student-text-muted);text-transform:uppercase;letter-spacing:.06em}.sidebar__link{display:flex;align-items:center;gap:.75rem;padding:.45rem .65rem;font-size:.84375rem;font-weight:500;color:var(--student-text-secondary);border-radius:.5rem;text-decoration:none;transition:all .15s ease;border:1px solid transparent;letter-spacing:-.01em}.sidebar__link svg{width:17px;height:17px;flex-shrink:0;color:var(--student-text-muted);transition:color .15s ease}.sidebar__link span{flex:1}.sidebar__link:hover{background:#f1f5f9cc;border-color:transparent;color:var(--student-text-primary);text-decoration:none}.sidebar__link:hover svg{color:var(--student-text-primary)}.sidebar__link.is-active{background:#2563eb14;border-color:transparent;color:var(--student-accent);font-weight:600}.sidebar__link.is-active svg{color:var(--student-accent)}.sidebar__footer{padding:1rem .75rem;border-top:1px solid var(--student-border-soft);margin-top:auto}.sidebar__admin-link{display:flex;align-items:center;gap:.75rem;padding:.45rem .65rem;font-size:.8125rem;font-weight:500;color:var(--student-text-secondary);background:transparent;border:1px solid var(--student-border-soft);border-radius:.5rem;text-decoration:none;transition:all .15s ease}.sidebar__admin-link svg{width:16px;height:16px;flex-shrink:0;color:#d97706}.sidebar__admin-link:hover{background:#fef3c766;border-color:#f59e0b4d;color:#92400e;text-decoration:none}.sidebar-footer{position:sticky;bottom:0;padding:1rem;background:var(--student-surface-2);border-top:1px solid var(--student-border-soft)}.app-sidebar--admin .sidebar-footer{background:var(--admin-surface-solid);border-color:var(--admin-border-soft)}.student-layout,.admin-layout{min-height:100vh}.student-layout{--student-bg: #f8fafc;--student-bg-alt: #f1f5f9;--student-surface-1: #ffffff;--student-surface-2: #f8fafc;--student-surface-overlay: rgb(255 255 255 / .94);--student-border-soft: #e2e8f0;--student-border-subtle: #f1f5f9;--student-border-strong: #cbd5e1;--student-text-primary: #0f172a;--student-text-secondary: #475569;--student-text-muted: #94a3b8;--student-accent: #2563eb;--student-accent-soft: rgb(37 99 235 / .06);--student-shadow: 0 1px 3px 0 rgb(15 23 42 / .04), 0 1px 2px -1px rgb(15 23 42 / .02);--student-shadow-elevated: 0 4px 12px -2px rgb(15 23 42 / .05), 0 2px 4px -2px rgb(15 23 42 / .02);--student-glass-blur: 10px;--input-bg: #ffffff;--input-bg-hover: #ffffff;--input-bg-focus: #ffffff;--input-border: var(--student-border-soft);--input-border-hover: var(--student-border-strong);--input-border-focus: var(--student-accent);--input-placeholder: var(--student-text-muted);--input-color: var(--student-text-primary);background-color:#f8fafc;background-image:radial-gradient(at 100% 0%,rgba(37,99,235,.025) 0px,transparent 50%);background-attachment:fixed;color:var(--student-text-primary)}.student-layout ::selection{background:#60a5fa42;color:#111827}.student-layout ::-moz-selection{background:#60a5fa42;color:#111827}.admin-layout{--admin-bg: #0b0f17;--admin-bg-alt: #101522;--admin-surface-1: #131924;--admin-surface-2: #182030;--admin-surface-hover: #1e283c;--admin-surface-solid: #131924;--admin-border-soft: rgb(255 255 255 / .1);--admin-border-strong: rgb(255 255 255 / .22);--admin-text-primary: #f8fafc;--admin-text-secondary: #cbd5e1;--admin-text-muted: #94a3b8;--admin-accent: #3b82f6;--admin-accent-soft: rgb(59 130 246 / .14);--admin-shadow: 0 1px 3px 0 rgb(0 0 0 / .35);--admin-glass-blur: 10px;--admin-input-bg: #141c2c;--admin-input-bg-hover: #1b263b;--admin-input-bg-focus: #1b263b;--admin-input-border: rgb(255 255 255 / .16);--admin-input-border-hover: rgb(255 255 255 / .36);--admin-input-border-focus: #3b82f6;--admin-input-placeholder: #8899ac;--admin-input-color: #f8fafc;--input-bg: var(--admin-input-bg);--input-bg-hover: var(--admin-input-bg-hover);--input-bg-focus: var(--admin-input-bg-focus);--input-border: var(--admin-input-border);--input-border-hover: var(--admin-input-border-hover);--input-border-focus: var(--admin-input-border-focus);--input-placeholder: var(--admin-input-placeholder);--input-color: var(--admin-input-color);background-color:#0b0f17;background-image:radial-gradient(at 50% 0%,rgba(37,99,235,.035) 0px,transparent 60%);background-attachment:fixed;color:var(--admin-text-primary)}.admin-layout ::selection{background:#60a5fa73;color:#f9fafb}.admin-layout ::-moz-selection{background:#60a5fa73;color:#f9fafb}body.admin-theme{--admin-bg: #0b0f17;--admin-bg-alt: #101522;--admin-surface-1: #131924;--admin-surface-2: #182030;--admin-surface-hover: #1e283c;--admin-surface-solid: #131924;--admin-border-soft: rgb(255 255 255 / .1);--admin-border-strong: rgb(255 255 255 / .22);--admin-text-primary: #f8fafc;--admin-text-secondary: #cbd5e1;--admin-text-muted: #94a3b8;--admin-accent: #3b82f6;--admin-accent-soft: rgb(59 130 246 / .14);--admin-shadow: 0 1px 3px 0 rgb(0 0 0 / .35);--admin-glass-blur: 10px;--admin-input-bg: #141c2c;--admin-input-bg-hover: #1b263b;--admin-input-bg-focus: #1b263b;--admin-input-border: rgb(255 255 255 / .16);--admin-input-border-hover: rgb(255 255 255 / .36);--admin-input-border-focus: #3b82f6;--admin-input-placeholder: #8899ac;--admin-input-color: #f8fafc;--input-bg: var(--admin-input-bg);--input-bg-hover: var(--admin-input-bg-hover);--input-bg-focus: var(--admin-input-bg-focus);--input-border: var(--admin-input-border);--input-border-hover: var(--admin-input-border-hover);--input-border-focus: var(--admin-input-border-focus);--input-placeholder: var(--admin-input-placeholder);--input-color: var(--admin-input-color);background-color:#0b0f17;background-image:radial-gradient(at 50% 0%,rgba(37,99,235,.035) 0px,transparent 60%);background-attachment:fixed;color:var(--admin-text-primary)}body.student-theme{--student-bg: #f8fafc;--student-bg-alt: #f1f5f9;--student-surface-1: #ffffff;--student-surface-2: #f8fafc;--student-surface-overlay: rgb(255 255 255 / .94);--student-border-soft: #e2e8f0;--student-border-subtle: #f1f5f9;--student-border-strong: #cbd5e1;--student-text-primary: #0f172a;--student-text-secondary: #475569;--student-text-muted: #94a3b8;--student-accent: #2563eb;--student-accent-soft: rgb(37 99 235 / .06);--student-shadow: 0 1px 3px 0 rgb(15 23 42 / .04), 0 1px 2px -1px rgb(15 23 42 / .02);--student-shadow-elevated: 0 4px 12px -2px rgb(15 23 42 / .05), 0 2px 4px -2px rgb(15 23 42 / .02);--student-glass-blur: 10px;--input-bg: #ffffff;--input-bg-hover: #ffffff;--input-bg-focus: #ffffff;--input-border: var(--student-border-soft);--input-border-hover: var(--student-border-strong);--input-border-focus: var(--student-accent);--input-placeholder: var(--student-text-muted);--input-color: var(--student-text-primary);background-color:#f8fafc;background-image:radial-gradient(at 100% 0%,rgba(37,99,235,.025) 0px,transparent 50%);background-attachment:fixed;color:var(--student-text-primary)}.content{min-height:calc(100vh - 64px);margin-top:64px;background:transparent}@media(min-width:1024px){.content{margin-left:260px}}.content--admin,.student-layout .content{background:transparent}.content--admin{--color-surface-1: var(--admin-surface-solid);--color-surface-2: #1e293b;--color-surface-3: #334155;--color-border: var(--admin-border-soft);--skeleton-color-base: rgb(255 255 255 / .05);--skeleton-color-highlight: rgb(255 255 255 / .1)}.content--admin .btn--secondary{background:var(--admin-surface-2);border-color:var(--admin-border-soft);color:var(--admin-text-primary)}.content--admin .btn--secondary:hover:not(:disabled){background:#2d3d5adb;border-color:var(--admin-border-strong);color:#f5f8ff}.content--admin .btn--ghost{color:var(--admin-text-secondary)}.content--admin .btn--ghost:hover:not(:disabled){background:var(--admin-surface-2);color:var(--admin-text-primary)}.content--admin .skeleton-table,.content--admin .skeleton-stats__card,.content--admin .skeleton-card{background:var(--admin-surface-solid);border-color:var(--admin-border-soft)}.content--admin .skeleton-table__header{background:#0f16258c;border-bottom-color:var(--admin-border-soft)}.content--admin .skeleton-table__row{border-bottom-color:var(--admin-border-soft)}.content--admin .badge--outline{color:var(--admin-text-secondary);border-color:var(--admin-border-strong)}.content--admin .empty-state .empty-state__title{color:var(--admin-text-primary)}.content--admin .empty-state .empty-state__description,.content--admin .empty-state .empty-state__icon{color:var(--admin-text-secondary)}.page{padding:1.5rem}@media(min-width:768px){.page{padding:2rem}}.page__header{margin-bottom:1.5rem}@media(min-width:768px){.page__header{margin-bottom:2rem}}.page__title{font-size:1.875rem;font-weight:700;line-height:1.25;letter-spacing:-.025em;margin-bottom:.5rem}@media(min-width:768px){.page__title{font-size:2.25rem;font-weight:700;line-height:1.25;letter-spacing:-.025em}}.page__subtitle{font-size:1.125rem;color:#4b5563;max-width:600px}.page__actions{display:flex;align-items:center;gap:.75rem;margin-top:1rem;flex-wrap:wrap}.section{margin-bottom:2rem}.section:last-child{margin-bottom:0}.section__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem;flex-wrap:wrap;gap:.75rem}.section__title{font-size:1.5rem;font-weight:600;line-height:1.375;margin:0}.section__subtitle{font-size:.875rem;color:#4b5563;margin-top:.25rem}.container{width:100%;max-width:1400px;margin-left:auto;margin-right:auto;padding-left:1rem;padding-right:1rem}@media(min-width:768px){.container{padding-left:1.5rem;padding-right:1.5rem}}.content-box{background:var(--student-surface-1);border:1px solid var(--student-border-soft);box-shadow:var(--student-shadow);backdrop-filter:blur(var(--student-glass-blur));-webkit-backdrop-filter:blur(var(--student-glass-blur));padding:1.5rem;border-radius:1rem}@media(min-width:768px){.content-box{padding:2rem}}.content--admin .content-box{background:var(--admin-surface-1);border:1px solid var(--admin-border-soft);box-shadow:var(--admin-shadow);backdrop-filter:blur(var(--admin-glass-blur));-webkit-backdrop-filter:blur(var(--admin-glass-blur))}.split-layout{display:grid;gap:1.5rem}@media(min-width:1024px){.split-layout{grid-template-columns:1fr 1fr;gap:2rem}}@media(min-width:1024px){.split-layout--sidebar{grid-template-columns:300px 1fr}}.empty-state{display:flex;flex-direction:column;align-items:center;text-align:center;padding:3rem 1rem}.empty-state__icon{width:80px;height:80px;margin-bottom:1rem;color:#6b7280}.empty-state__icon 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1rem;line-height:1.25}@media(min-width:768px){.cta-banner__title{font-size:2.25rem}}.cta-banner__subtitle{font-size:1.125rem;color:#ffffffe6;margin:0 0 2rem;line-height:1.625}.cta-banner .hero__actions{justify-content:center}.cta-banner .btn--primary{background:#fff;color:#1d4ed8;border-color:#fff;box-shadow:0 4px 14px #00000026}.cta-banner .btn--primary:hover{background:#fff;color:#1e40af;box-shadow:0 6px 20px #00000040;transform:translateY(-2px)}.legal-page{padding:3rem 0}.legal-page__inner{max-width:960px;margin:0 auto;padding:0 1.5rem}.legal-page__hero{position:relative;overflow:hidden;margin-bottom:2rem;padding:2rem;border:1px solid #e5e7eb;border-radius:1rem;background:radial-gradient(circle at 88% -4%,rgba(59,130,246,.08),transparent 42%),radial-gradient(circle at 12% 0%,rgba(45,212,191,.06),transparent 30%),linear-gradient(168deg,#f5f9ff,#fbfdff 52%,#f7faff);box-shadow:0 1px 3px #0000001a,0 1px 2px -1px #0000001a}.legal-page__eyebrow{margin:0 0 .75rem;font-size:.75rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:#2563eb}.legal-page__title{margin:0;font-size:1.875rem;line-height:1.25;color:#111827}@media(min-width:768px){.legal-page__title{font-size:2.25rem}}.legal-page__subtitle{margin:1rem 0 0;font-size:1rem;line-height:1.625;color:#4b5563}.legal-page__effective{margin:1rem 0 0;font-size:.875rem;color:#6b7280}.legal-page__section{padding:1.5rem;border:1px solid #e5e7eb;border-radius:.75rem;background:#ffffffd6;box-shadow:0 1px 2px #0000000d}.legal-page__section+.legal-page__section{margin-top:1rem}.legal-page__section--intro{margin-bottom:1rem}.legal-page__section-title{margin:0 0 .75rem;font-size:1.25rem;line-height:1.25;color:#111827}.legal-page__paragraph{margin:0;font-size:1rem;color:#4b5563;line-height:1.625}.legal-page__paragraph+.legal-page__paragraph{margin-top:.75rem}.legal-page__list{margin:1rem 0 0;padding-left:1.5rem;color:#4b5563}.legal-page__list li{line-height:1.625}.legal-page__list li+li{margin-top:.5rem}.legal-page__footer-note{margin-top:1.5rem;padding:1rem 1.25rem;border-left:4px solid #3b82f6;border-radius:.5rem;background:#eff6ff;color:#1e40af;font-size:.875rem;line-height:1.625}@media(max-width:768px){.legal-page{padding:2rem 0}.legal-page__hero,.legal-page__section{padding:1.25rem}}.loading-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.75rem;padding:4rem 1rem;color:#4b5563;font-size:.875rem}.loading-spinner{width:36px;height:36px;border:3px solid rgba(226,232,240,.6);border-top-color:#3b82f6;border-radius:50%;animation:spin .7s linear infinite;flex-shrink:0}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:3rem 1rem}.empty-state__icon{font-size:3rem;line-height:1;margin-bottom:1rem}.empty-state h3{font-size:1.25rem;font-weight:600;letter-spacing:-.015em;color:#111827;margin-bottom:.5rem}.empty-state p{font-size:.875rem;color:#4b5563;max-width:360px;margin-bottom:0}.stat-card{display:flex;align-items:center;gap:1rem;padding:1.25rem 1.5rem;background:var(--student-surface-1, #ffffff);border:1px solid var(--student-border-soft, #e2e8f0);border-radius:.75rem;box-shadow:0 1px 3px #0f172a08;transition:border-color .15s ease,box-shadow .15s ease}.stat-card:hover{border-color:var(--student-border-strong, #cbd5e1);box-shadow:0 4px 12px -2px #0f172a0d}.stat-card:focus-within{border-color:var(--student-accent);box-shadow:0 0 0 3px #2563eb1f}.stat-card__icon{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:.5rem;flex-shrink:0}.stat-card__icon svg{width:22px;height:22px}.stat-card__icon--primary{background:#2563eb14;color:#2563eb}.stat-card__icon--success{background:#22c55e14;color:#16a34a}.stat-card__icon--warning{background:#f59e0b14;color:#d97706}.stat-card__icon--info{background:#3b82f614;color:#3b82f6}.stat-card__icon--error{background:#ef444414;color:#dc2626}.stat-card__icon--training{background:#7c3aed14;color:#7c3aed}.stat-card__content{display:flex;flex-direction:column;gap:.25rem;min-width:0}.stat-card__value{font-size:1.5rem;font-weight:700;letter-spacing:-.03em;color:#111827;line-height:1}.stat-card__label{font-size:.875rem;color:#4b5563}.back-link{display:inline-flex;align-items:center;gap:.5rem;font-size:.875rem;font-weight:500;color:#4b5563;text-decoration:none;transition:color .15s ease;margin-bottom:1rem}.back-link svg{width:16px;height:16px;flex-shrink:0}.back-link:hover{color:#2563eb;text-decoration:none}.data-table{width:100%;background:var(--student-surface-1, #ffffff);border:1px solid var(--student-border-soft, #e2e8f0);border-radius:.75rem;overflow:hidden;box-shadow:0 1px 3px #0f172a05}.data-table__wrapper{overflow-x:auto;scrollbar-width:thin;scrollbar-color:#d1d5db transparent}.data-table__wrapper::-webkit-scrollbar{width:6px;height:6px}.data-table__wrapper::-webkit-scrollbar-track{background:transparent}.data-table__wrapper::-webkit-scrollbar-thumb{background:#94a3b859;border-radius:3px}.data-table__wrapper::-webkit-scrollbar-thumb:hover{background:#94a3b899}.data-table table{width:100%;border-collapse:collapse}.data-table th,.data-table td{padding:.75rem 1rem;text-align:left;border-bottom:1px solid var(--student-border-soft, #e2e8f0)}.data-table th{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:#6b7280;background:var(--student-surface-2, #f8fafc);white-space:nowrap}.data-table td{font-size:.875rem;color:#111827;vertical-align:middle}.data-table tr:last-child td{border-bottom:none}.data-table tr:hover td{background:var(--student-surface-2, #f8fafc)}.skeleton{background:linear-gradient(90deg,#ffffff14 25%,#fff3,#ffffff14 75%);background-size:200% 100%;animation:skeleton-loading 1.5s infinite;border-radius:.25rem}.skeleton--text{height:1em;margin-bottom:.5rem}.skeleton--title{height:2em;width:60%;margin-bottom:.75rem}.skeleton--avatar{width:40px;height:40px;border-radius:9999px}.skeleton--card{height:200px;border-radius:.75rem}@keyframes skeleton-loading{0%{background-position:200% 0}to{background-position:-200% 0}}.fade-enter-active,.fade-leave-active{transition:opacity .2s ease}.fade-enter-from,.fade-leave-to{opacity:0}.slide-enter-active,.slide-leave-active{transition:all .2s ease}.slide-enter-from,.slide-leave-to{opacity:0;transform:translateY(-8px)}