html,body{background:var(--color-canvas);color:var(--color-text)}body{transition:background var(--transition-normal),color var(--transition-normal)}#header,#nav-menu,.profile-summary,.profile-courses,#login-block,.appearance-settings{background-color:var(--color-surface);color:var(--color-text);border-color:var(--color-border)}#header{border-bottom:1px solid var(--color-border)}#main{scrollbar-color:var(--color-brand)transparent}#nav-menu{border:1px solid var(--color-border);box-shadow:var(--shadow-md)}.active,.nav-menu-btn:hover{background-color:var(--color-surface-subtle)}.section>h2:first-child,#course-data__name{color:var(--color-text);text-shadow:none}.course-card{border-color:var(--color-border);background-color:var(--color-surface);background-image:linear-gradient(145deg,color-mix(in srgb,var(--course-accent,var(--color-brand))14%,var(--color-surface)),var(--color-surface)72%);color:var(--color-text);box-shadow:var(--shadow-sm)}.course-card:hover{border-color:var(--color-border-strong);box-shadow:var(--shadow-md)}.course-card:active{background-color:var(--color-surface-subtle)}.course-card h2+div>span:first-child,#course-data__shortdescp,.course-file-meta,.profile-phone,.profile-empty{color:var(--color-text-muted)}.price,.course-data__longdescp a,.post-card span{color:var(--color-brand)}.free,.lesson-access.owned,#profile-save-status.success{color:var(--color-success)}.price.strike-through,#profile-save-status.error{color:var(--color-danger)}.course-data__longdescp,#course-data__descpbox,.profile-table input,.profile-table select,.profile-course-link,.post-card{color:var(--color-text);border-color:var(--color-border);background-color:var(--color-surface)}#buy-course-btn,#profile-save-btn,#installPWABtn,#install-pwa,#installPWAPageBtn,.posts-more-link,#course-data__descpbox>button{background:var(--color-brand-fill);color:var(--color-on-brand)}#course-purchase-box{border-color:color-mix(in srgb,var(--color-brand)40%,var(--color-border));background:color-mix(in srgb,var(--color-brand)8%,var(--color-surface))}#course-view-short-descp{background:var(--color-surface);color:var(--color-text);border-color:var(--color-border);box-shadow:var(--shadow-sm)}.course-view-pricing{justify-content:center;align-items:baseline;gap:var(--space-2)var(--space-3);padding-top:var(--space-3);margin-top:var(--space-3);border-top:1px solid var(--color-border);text-align:center;flex-wrap:wrap;display:flex}.course-view-price-label,#course-view-original-price{color:var(--color-text-muted);font-size:.875rem}#course-view-price{color:var(--color-text);font-size:1.125rem}#course-view-price.is-free{color:var(--color-success)}#course-purchase-box.ownership-only{padding-block:var(--space-3)}#course-purchase-box.ownership-only #course-ownership-message{margin-bottom:0}.payment-message.success{border-color:var(--color-success);background:var(--color-success-soft);color:var(--color-success)}.payment-message.failed{border-color:var(--color-danger);background:var(--color-danger-soft);color:var(--color-danger)}.profile-table input,.profile-table select{background:var(--color-surface-subtle)}.profile-table select option{background:var(--color-surface);color:var(--color-text)}.profile-course-link:hover{border-color:var(--color-border-strong);background:var(--color-surface-subtle)}.media-viewer{background:var(--color-overlay)}.media-viewer__container,.media-viewer__header{background:var(--color-surface-raised);color:var(--color-text)}.media-viewer__header{border-bottom-color:var(--color-border)}.media-viewer__controls,.media-viewer__playback-controls{align-items:center;gap:var(--space-2);display:flex}.media-viewer__controls button{min-width:2.5rem;min-height:2.5rem;padding:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface-subtle);color:var(--color-text);font:inherit;box-shadow:none;place-items:center;line-height:1;display:inline-grid}.media-viewer__controls button:hover{border-color:var(--color-border-strong);background:var(--color-surface);color:var(--color-text)}.media-viewer__controls button:focus-visible{outline:3px solid color-mix(in srgb,var(--color-focus)45%,transparent);outline-offset:2px}.media-viewer__controls .speed-btn{min-width:3.25rem;color:var(--color-text);font-variant-numeric:tabular-nums;direction:ltr;font-weight:700}.media-viewer__controls .close-btn{border-color:color-mix(in srgb,var(--color-danger)32%,var(--color-border));background:var(--color-danger-soft);color:var(--color-danger)}.media-viewer__controls .close-btn:hover{border-color:var(--color-danger);background:color-mix(in srgb,var(--color-danger)16%,var(--color-surface));color:var(--color-danger)}.media-control-icon{fill:none;stroke:currentColor;width:1.2rem;height:1.2rem;display:block}.appearance-settings{margin-top:var(--space-4);padding:var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-lg)}.appearance-settings h3{margin:0 0 var(--space-2)}.appearance-settings p{margin:0 0 var(--space-4);color:var(--color-text-muted);line-height:1.7}