/* APP_DESIGN.md supplies the shared theme tokens in style.css.
   WEB_DESIGN.md supplies the quiet gallery layout and 330ms transitions.
   Shared by the icon library and its upload page. */
:root { --archive-motion: 330ms; --archive-ease: cubic-bezier(.5, 0, 0, .75); }
html { scroll-padding-top: 100px; }
body { background: var(--card); }
.archive-skip { position: fixed; top: 12px; left: 16px; z-index: 50; padding: 12px 20px; border-radius: 14px; background: var(--card); transform: translateY(-180%); }
.archive-skip:focus { transform: none; }
.archive-header { position: sticky; top: 0; z-index: 30; background: var(--card); transition: background-color var(--archive-motion) var(--archive-ease); }
.archive-header.is-scrolled, .archive-header[data-menu-open] { background: var(--navigation); }
@supports (background: color-mix(in srgb, white 90%, transparent)) {
    .archive-header.is-scrolled, .archive-header[data-menu-open] { background: color-mix(in srgb, var(--navigation) 88%, transparent); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
}
.archive-header-inner { width: min(1384px, calc(100% - 80px)); min-height: 80px; margin: auto; display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-block: 12px; }
.archive-brand { display: inline-flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--primary-text); white-space: nowrap; }
.archive-nav { display: flex; align-items: center; gap: 8px; }
.archive-nav > a:not(.archive-button) { display: flex; align-items: center; min-height: 44px; padding: 8px 16px; border-radius: 11px; color: var(--secondary-text); font-size: 14px; font-weight: 500; transition: color var(--archive-motion), background-color var(--archive-motion); }
.archive-nav > a[aria-current] { color: var(--primary-text); }
.archive-theme select { min-height: 44px; max-width: 124px; padding: 8px; border: 0; border-radius: 11px; background: transparent; color: var(--secondary-text); font-size: 13px; cursor: pointer; }
.archive-button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 24px; border: 0; border-radius: 14px; font-size: 14px; font-weight: 600; transition: background-color var(--archive-motion), color var(--archive-motion); }
.archive-button.primary { background: var(--primary-blue); color: #FFF; }
.archive-button.secondary { background: var(--blue-tint); color: var(--primary-text); }
.archive-menu { min-height: 44px; display: flex; align-items: center; gap: 8px; border: 0; border-radius: 11px; padding: 8px 12px; color: var(--primary-text); background: var(--subtle-fill); font-size: 13px; }
.archive-menu svg { width: 20px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.library-intro { padding: 76px 24px 64px; text-align: center; }
.library-label { margin: 0 0 16px; color: var(--secondary-text); font-size: 13px; font-weight: 500; }
.library-intro h1 { margin: 0; color: var(--primary-text); font-size: 40px; font-weight: 700; line-height: 1.3; letter-spacing: 0; }
.library-description { margin: 16px 0 32px; color: var(--secondary-text); font-size: 15px; word-break: keep-all; }
.library-search { width: min(560px, 100%); min-height: 56px; margin: auto; padding: 8px 16px; display: flex; align-items: center; gap: 12px; border: 1px solid var(--soft-separator); border-radius: 14px; background: var(--background); }
.library-search:focus-within { border-color: var(--primary-blue); outline: 2px solid var(--blue-tint); }
.library-search > svg { width: 22px; flex: 0 0 22px; fill: none; stroke: var(--secondary-text); stroke-width: 1.6; stroke-linecap: round; }
.library-search input { width: 100%; min-width: 0; min-height: 40px; color: var(--primary-text); background: transparent; border: 0; outline: none; font-size: 16px; }
.library-search input::placeholder { color: var(--secondary-text); opacity: 1; }
.library-search kbd { display: grid; place-items: center; width: 26px; height: 26px; flex: 0 0 26px; border: 1px solid var(--separator); border-radius: 6px; color: var(--secondary-text); font-family: inherit; font-size: 12px; }
.library { width: min(1200px, calc(100% - 80px)); margin: auto; padding-bottom: 100px; min-height: 50vh; }
.library-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.filter-list { min-width: 0; display: flex; flex-wrap: wrap; gap: 4px; padding: 0; overflow: visible; background: transparent; border-radius: 0; }
.filter-button { min-height: 44px; padding: 10px 18px; border-radius: 11px; font-size: 14px; font-weight: 500; transition: color var(--archive-motion), background-color var(--archive-motion); }
.filter-button.active { background: var(--subtle-fill); color: var(--primary-text); box-shadow: none; }
.sort-select select { min-height: 44px; background: transparent; border: 0; color: var(--secondary-text); font-size: 13px; }
.library-status { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin: 24px 0; }
.result-summary { margin: 0; color: var(--secondary-text); font-size: 12px; }
.library-hint { color: var(--secondary-text); font-size: 12px; }
.icon-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: 32px; row-gap: 48px; }
.icon-card { min-width: 0; padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
.icon-card:hover { border: 0; box-shadow: none; }
/* A light artboard preserves the original asset colors in either theme. */
.icon-visual { aspect-ratio: 1.15; min-height: 0; background: #F6F8FC; border: 1px solid var(--soft-separator); border-radius: 18px; }
.icon-visual .main-icon, .icon-visual > img { width: 104px; height: 104px; max-width: 48%; max-height: 48%; object-fit: contain; }
.like-button { top: 12px; right: 12px; width: 44px; height: 44px; border: 0; border-radius: 11px; background: transparent; color: #5B6A8A; transition: background-color var(--archive-motion), color var(--archive-motion); }
.like-button.active { color: #C8324D; }
.icon-info { padding: 16px 0 0; gap: 8px; align-items: start; }
.icon-info > div:first-child { flex: 1 1 140px; }
.icon-info h3 { margin: 0 0 6px; color: var(--primary-text); font-size: 17px; font-weight: 600; }
.icon-info p { color: var(--secondary-text); font-size: 12px; line-height: 1.8; }
.icon-category { color: var(--secondary-text); }
.icon-actions { gap: 4px; }
.download-button, .delete-button { width: 44px; height: 44px; border: 0; border-radius: 11px; background: var(--background); color: var(--primary-text); transition: color var(--archive-motion), background-color var(--archive-motion); }
.delete-button { color: var(--danger); }
.download-button svg, .delete-button svg { width: 20px; }
.empty-state { border: 0; padding: 88px 24px; background: var(--background); }
.empty-state > span { background: var(--subtle-fill); color: var(--secondary-text); }
.empty-state h2 { margin: 0 0 12px; font-size: 24px; font-weight: 700; }
.empty-state p { font-size: 14px; }
.archive-notice { margin-block: 20px; }
.library-noscript { padding: 32px; border-radius: 14px; background: var(--background); color: var(--secondary-text); font-size: 14px; }
.skeleton-card .skeleton:first-child { height: auto; aspect-ratio: 1.15; border-radius: 18px; }
.skeleton-card .skeleton:last-child { height: 40px; margin-top: 16px; }
.library-guide { padding: 100px 0; background: var(--background); }
.library-guide-inner { width: min(1120px, calc(100% - 80px)); margin: auto; display: grid; grid-template-columns: 1fr 1fr; align-items: start; gap: 80px; }
.guide-heading h2 { margin: 0; color: var(--primary-text); font-size: 36px; line-height: 1.4; font-weight: 700; word-break: keep-all; }
.guide-link { display: inline-flex; align-items: center; gap: 16px; min-height: 44px; margin-top: 24px; color: var(--secondary-text); font-size: 14px; }
.guide-steps { list-style: none; display: grid; gap: 36px; padding: 0; margin: 0; }
.guide-steps li { display: flex; align-items: start; gap: 24px; }
.guide-number { flex: 0 0 24px; padding-top: 4px; color: var(--secondary-text); font-size: 12px; font-variant-numeric: tabular-nums; }
.guide-steps h3 { margin: 0 0 8px; color: var(--primary-text); font-size: 17px; font-weight: 600; }
.guide-steps p { margin: 0; color: var(--secondary-text); font-size: 14px; line-height: 1.8; word-break: keep-all; }
.archive-footer { width: 100%; padding: 36px 0; border: 0; margin: 0; background: var(--card); }
.archive-footer-inner { width: min(1384px, calc(100% - 80px)); margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.archive-footer .archive-brand { font-size: 17px; }
.archive-footer nav { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.archive-footer nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: 12px; }
.archive-footer p { margin: 0; white-space: nowrap; font-size: 12px; }
.toast { box-shadow: none; transition-duration: var(--archive-motion); }
[data-archive-reveal] { transition: opacity var(--archive-motion) var(--archive-ease), transform var(--archive-motion) var(--archive-ease); }
.archive-reveal-pending { opacity: 0; transform: translateY(16px); }
@media (hover: hover) {
    .archive-nav > a:not(.archive-button):hover, .archive-theme select:hover, .filter-button:hover, .like-button:hover { background: var(--subtle-fill); color: var(--primary-text); }
    .like-button:hover { background: #E9EEF6; color: #1F2A44; }
    .like-button.active:hover { color: #C8324D; }
    .archive-button.primary:hover { background: #1C55CC; }
    .archive-button.secondary:hover, .download-button:hover { background: var(--blue-tint); }
    .delete-button:hover { background: var(--subtle-fill); }
    .guide-link:hover, .archive-footer nav a:hover { color: var(--primary-text); text-decoration: underline; text-underline-offset: 4px; }
}
@media (min-width: 901px) { .archive-menu { display: none; } }
@media (max-width: 1100px) {
    .archive-header-inner, .archive-footer-inner { width: calc(100% - 48px); }
    .archive-nav { gap: 4px; }
    .archive-nav > a:not(.archive-button) { padding-inline: 10px; font-size: 13px; }
    .archive-button { padding-inline: 18px; }
    .library, .library-guide-inner { width: calc(100% - 64px); }
    .icon-grid { gap: 36px 24px; }
    .icon-info h3 { font-size: 16px; }
}
@media (max-width: 900px) {
    .archive-header-inner { flex-wrap: wrap; gap: 12px; min-height: 72px; }
    .archive-nav { flex: 0 0 100%; flex-wrap: wrap; }
    .archive-enhanced .archive-nav { display: none; max-height: calc(100svh - 96px); overflow-y: auto; }
    .archive-enhanced [data-menu-open] .archive-nav { display: flex; }
    .icon-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .library-toolbar { gap: 12px; }
    .filter-button { padding-inline: 14px; }
    .library-guide-inner { gap: 40px; }
    .archive-footer-inner { flex-wrap: wrap; }
    .archive-footer nav { order: 3; width: 100%; }
}
@media (max-width: 600px) {
    html { scroll-padding-top: 88px; }
    .archive-header-inner { width: calc(100% - 40px); }
    .archive-brand { font-size: 18px; }
    .archive-nav { gap: 6px; padding-bottom: 4px; }
    .archive-nav > a:not(.archive-button) { flex: 0 0 100%; padding: 10px 12px; font-size: 14px; }
    .archive-theme { flex: 1; }
    .archive-theme select { width: 100%; max-width: 100%; }
    .library-intro { padding: 48px 20px 40px; }
    .library-label { font-size: 12px; margin-bottom: 12px; }
    .library-intro h1 { font-size: 28px; }
    .library-description { margin: 16px 0 28px; font-size: 14px; }
    .library-search { padding-inline: 12px; }
    .library-search kbd { display: none; }
    .library-search input { font-size: 16px; }
    .library, .library-guide-inner { width: calc(100% - 40px); }
    .library { padding-bottom: 64px; }
    .library-toolbar { flex-wrap: wrap; align-items: center; }
    .filter-list { width: 100%; gap: 4px; }
    .filter-button { flex: 1 0 auto; padding-inline: 10px; font-size: 13px; }
    .sort-select { margin-left: auto; }
    .library-status { margin: 16px 0 24px; }
    .library-hint { display: none; }
    .icon-grid { grid-template-columns: minmax(0, 1fr); row-gap: 36px; }
    .icon-visual { aspect-ratio: 1.3; }
    .icon-visual .main-icon, .icon-visual > img { width: 96px; height: 96px; }
    .icon-info { padding-top: 14px; }
    .icon-info h3 { font-size: 17px; }
    .library-guide { padding-block: 64px; }
    .library-guide-inner { grid-template-columns: 1fr; gap: 40px; }
    .guide-heading h2 { font-size: 28px; }
    .guide-steps { gap: 28px; }
    .guide-steps li { gap: 16px; }
    .archive-footer { padding-block: 28px; }
    .archive-footer-inner { width: calc(100% - 40px); gap: 16px; }
    .archive-footer nav { gap: 0 20px; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition: none !important; }
    .archive-reveal-pending { opacity: 1; transform: none; }
}
@media print {
    .archive-header { position: static; }
    .archive-reveal-pending { opacity: 1; transform: none; }
    .archive-menu, .like-button, .download-button, .delete-button, .toast { display: none !important; }
}