@import"https://fonts.googleapis.com/css2?family=Public+Sans:ital,wght@0,100..900;1,100..900&display=swap";:root{--bg-color: #eef3ff;--bg-secondary: #f7f9ff;--primary-color: #ffd95a;--primary-color-hover: #ffc94d;--accent-primary: #ffd95a;--primary-gradient: linear-gradient(135deg, #ffd95a 0%, #ffb347 100%);--card-bg: #ffffff;--card-color: #ffffff;--list-color: #f6f8ff;--text-primary: #31456c;--text-secondary: #152342;--text-disabled: #9da8c0;--profile-color: #f0a23e;--bg-profile: #fff5df;--profile-active: #26d07c;--border-color: #dbe3f2;--input-bg: #ffffff;--surface-border-color: rgba(30, 52, 96, .1);--text-border-text: #1f2e4f;--shadow: 0 8px 20px rgba(18, 37, 77, .08);--shadow-lg: 0 20px 40px rgba(17, 32, 69, .14);--sidebar-bg-color: #1b2a48;--sidebar-text-color: #ecf2ff;--sidebar-hover-bg: rgba(255, 255, 255, .08);--bg-gradient: radial-gradient(1200px 580px at 8% -10%, rgba(255, 210, 93, .24), transparent 64%), radial-gradient(980px 560px at 94% -2%, rgba(57, 112, 212, .16), transparent 62%)}:root.dark{--bg-color: #0f1830;--bg-secondary: #182341;--primary-color: #ffd95a;--primary-color-hover: #ffc94d;--accent-primary: #ffd95a;--primary-gradient: linear-gradient(135deg, #ffd95a 0%, #ffb347 100%);--list-color: #1f2d4d;--card-bg: #192645;--card-color: #192645;--text-primary: #d5e1ff;--text-secondary: #f7f9ff;--text-disabled: #7d91ba;--profile-color: #ffd35a;--bg-profile: #4e3a14;--profile-active: #26d07c;--border-color: #2a3b63;--input-bg: #182341;--surface-border-color: rgba(214, 228, 255, .16);--text-border-text: #1f2e4f;--shadow: 0 10px 24px rgba(0, 0, 0, .32);--shadow-lg: 0 24px 44px rgba(0, 0, 0, .36);--sidebar-text-color: #ecf2ff;--sidebar-hover-bg: rgba(255, 255, 255, .1);--bg-gradient: radial-gradient(1220px 650px at 8% -12%, rgba(255, 210, 93, .12), transparent 64%), radial-gradient(980px 560px at 94% -2%, rgba(80, 156, 255, .14), transparent 62%)}:root.light.theme-variant-semi-dark{--bg-color: #eef3ff;--sidebar-bg-color: #1d2c4e;--sidebar-text-color: #ecf2ff;--sidebar-hover-bg: rgba(255, 255, 255, .08)}:root.dark.theme-variant-semi-dark{--bg-color: #101a31;--sidebar-bg-color: #e8edfb;--sidebar-text-color: #132241;--sidebar-hover-bg: rgba(19, 34, 65, .08)}:root.light.theme-variant-bordered{--surface-border-color: rgba(30, 52, 96, .2)}:root.dark.theme-variant-bordered{--surface-border-color: rgba(214, 228, 255, .22)}:root.theme-variant-default{--surface-border-color: rgba(30, 52, 96, .1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Public Sans,sans-serif;font-weight:400;background-color:var(--bg-color);background-image:var(--bg-gradient);background-attachment:fixed;background-repeat:no-repeat;background-size:cover;color:var(--text-primary);transition:background-color .3s ease,color .3s ease;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}body.profile-panel-open{overflow:hidden}.app-route-loader{min-height:36vh;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-weight:700;letter-spacing:.04em;opacity:.88}.fade-in-up{animation:fadeInUp .35s ease both}.skeleton-shimmer{position:absolute;inset:0;background:linear-gradient(90deg,#ffffff0a,#ffffff1f,#ffffff0a);transform:translate(-100%);animation:shimmer 1.4s infinite}footer{padding-bottom:32px;padding-top:64px;color:var(--text-secondary);text-align:left;max-width:1400px;font-weight:400;font-size:20px;margin:0 auto;width:100%}.container{max-width:1400px;margin:0 auto;width:100%}@media (max-width: 768px){.container{padding:0 16px}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes shimmer{to{transform:translate(100%)}}.not-found{display:flex;align-items:center;justify-content:center;height:30vh}.theme-variant-bordered .header__content,.theme-variant-bordered .lesson-card,.theme-variant-bordered .exercise-card,.theme-variant-bordered .lesson-viewer__main,.theme-variant-bordered .lesson-viewer__footer,.theme-variant-bordered .lesson-viewer__status,.theme-variant-bordered .lesson-viewer__error,.theme-variant-bordered .lesson-viewer__empty,.theme-variant-bordered .create-lesson-form,.theme-variant-bordered .edit-lesson-page__form,.theme-variant-bordered .edit-lesson-page__preview,.theme-variant-bordered .edit-lesson-page__exercise-group{border:1px solid var(--surface-border-color);box-shadow:none}.theme-variant-bordered .sidebar{border-right:1px solid var(--surface-border-color)}@media (prefers-reduced-motion: reduce){.fade-in-up{animation:none}.skeleton-shimmer{animation:none;transform:none}}