/* ============================================================ Page loader — full-screen splash shown while the page loads. Theme-aware (light/dark via body.dark-mode + the existing --loader-primary/--loader-accent tokens from combined.css). Hidden by static/js/main.js's initPageLoader() once the window has finished loading (min. display time + window "load" event, with a safety timeout). ============================================================ */ /* combined.css's generic `.loading { opacity: 0 }` rule (meant only for `body.loading .main-content`) also matches itself. Since CSS opacity composites a whole subtree as one transparent layer, that accidentally hid #pageLoader too (a child of body) despite its own opacity being 1. `body.loading` is more specific than the bare `.loading` it's overriding, so this wins regardless of stylesheet order. */ body.loading { opacity: 1; } .page-loader { position: fixed; inset: 0; z-index: 99999; display: flex; align-items: center; justify-content: center; background: var(--theme-bg, #e8ecf0); opacity: 1; visibility: visible; transition: opacity .5s ease, visibility .5s ease; } .page-loader.hidden { opacity: 0; visibility: hidden; pointer-events: none; } .page-loader .loader-content { display: flex; align-items: center; justify-content: center; } .loader-logo-wrap { position: relative; width: 120px; height: 120px; display: flex; align-items: center; justify-content: center; } .loader-logo-wrap .loader-logo { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: 2; width: 64px; height: auto; animation: loaderPulse 1.6s ease-in-out infinite; } /* Only one logo variant renders at a time, matching the theme. */ .loader-logo--dark { display: none; } body.dark-mode .loader-logo--light { display: none; } body.dark-mode .loader-logo--dark { display: block; } .loader-ring { position: absolute; inset: 0; border-radius: 50%; border: 3px solid rgba(0, 0, 0, .12); border-top-color: var(--loader-accent, #007aff); animation: loaderSpin 1s linear infinite; } body.dark-mode .loader-ring { border-color: rgba(255, 255, 255, .15); border-top-color: var(--loader-accent, #007aff); } /* A second, slower counter-rotating ring for a bit more depth. */ .loader-ring--outer { inset: -14px; border-width: 2px; border-color: transparent; border-bottom-color: var(--loader-accent, #007aff); opacity: .5; animation: loaderSpinReverse 2.2s linear infinite; } /* Re-applied after the general body.dark-mode .loader-ring override above (same selector specificity) so the outer ring keeps its transparent base instead of picking up the inner ring's solid border color in dark mode. */ body.dark-mode .loader-ring--outer { border-color: transparent; border-bottom-color: var(--loader-accent, #007aff); } /* Four Material Icons pulsing in sequence around the logo. */ .loader-icons { position: absolute; inset: 0; pointer-events: none; } .loader-icon-slot { position: absolute; display: flex; } .loader-icon-slot--top { top: -6px; left: 50%; transform: translate(-50%, -100%); } .loader-icon-slot--right { top: 50%; right: -6px; transform: translate(100%, -50%); } .loader-icon-slot--bottom { bottom: -6px; left: 50%; transform: translate(-50%, 100%); } .loader-icon-slot--left { top: 50%; left: -6px; transform: translate(-100%, -50%); } .loader-icon-slot .material-icons { font-size: 18px; color: var(--loader-accent, #007aff); opacity: 0; transform: scale(.5); animation: loaderIconPulse 2.4s ease-in-out infinite; } .loader-icon-slot--top .material-icons { animation-delay: 0s; } .loader-icon-slot--right .material-icons { animation-delay: .6s; } .loader-icon-slot--bottom .material-icons { animation-delay: 1.2s; } .loader-icon-slot--left .material-icons { animation-delay: 1.8s; } @keyframes loaderSpin { to { transform: rotate(360deg); } } @keyframes loaderSpinReverse { to { transform: rotate(-360deg); } } @keyframes loaderPulse { 0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 1; } 50% { transform: translate(-50%, -50%) scale(.92); opacity: .82; } } @keyframes loaderIconPulse { 0%, 70%, 100% { opacity: 0; transform: scale(.5); } 35% { opacity: 1; transform: scale(1); } } @media (prefers-reduced-motion: reduce) { .loader-logo-wrap .loader-logo, .loader-ring, .loader-ring--outer, .loader-icon-slot .material-icons { animation: none; } .loader-icon-slot .material-icons { opacity: .8; transform: none; } }