/* Shared, versioned language navigation for home and tool pages. */
.page-shell:has(.language-menu) { overflow: visible; }
.app-header:has(.language-menu) { position: relative; z-index: 150; backdrop-filter: none; -webkit-backdrop-filter: none; }
html { overflow-x: clip; }
.locale-toolbar { position: relative; z-index: 150; display: flex; justify-content: flex-end; }
.locale-toolbar { align-items: center; flex-wrap: nowrap; gap: 8px; direction: ltr; }
.locale-toolbar .tool-theme-toggle--toolbar {
    display: inline-flex; position: static; flex: 0 0 auto;
    height: 44px; min-height: 44px; margin: 0; white-space: nowrap;
}
@media (max-width: 1024px) {
    body.tool-page .locale-toolbar {
        position: fixed; top: max(12px, env(safe-area-inset-top));
        right: max(12px, env(safe-area-inset-right));
        width: auto; max-width: calc(100vw - 84px); margin: 0;
    }
    body.tool-page:has(.locale-toolbar) { padding-top: 76px; }
    .locale-toolbar .tool-theme-toggle--toolbar {
        width: 44px; min-width: 44px; padding: 0;
    }
    .locale-toolbar .tool-theme-toggle--toolbar span { display: none; }
}
.language-menu, .locale-toolbar .language-menu { position: relative; z-index: 1; }
.language-menu *, .locale-toolbar .language-menu * { box-sizing: border-box; }
.language-menu > summary, .locale-toolbar .language-menu > summary {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    height: 44px; min-height: 44px; padding: 0 14px; margin: 0;
    border: 1px solid var(--border-color, var(--tool-border, #cbd5e1)); border-radius: 999px;
    background: var(--bg-surface, var(--tool-surface, #fff));
    color: var(--text-secondary, var(--tool-text-secondary, #475569));
    font: 600 14px/1.2 var(--font-family, var(--tool-font-family, Arial, sans-serif));
    white-space: nowrap; cursor: pointer; list-style: none; text-decoration: none;
}
.language-menu > summary::-webkit-details-marker { display: none; }
.language-menu > summary::marker { content: ''; }
.language-menu > summary svg, .locale-toolbar .language-menu > summary svg {
    display: block; width: 18px; height: 18px; max-width: 18px; flex: 0 0 18px;
}
.language-menu > summary span:not(.language-menu-chevron) { display: inline; }
.language-menu > summary .language-menu-chevron,
.locale-toolbar .language-menu > summary .language-menu-chevron {
    display: block; width: 7px; height: 7px; flex: 0 0 7px; margin: 0 0 3px 2px;
    border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
    border-inline-end: 0; border-block-end: 0; border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor; font-size: 0; line-height: 0;
    transform: rotate(45deg); transition: transform .15s ease;
}
.language-menu[open] > summary .language-menu-chevron,
.locale-toolbar .language-menu[open] > summary .language-menu-chevron { transform: rotate(225deg); margin-bottom: -3px; }
.language-menu > .language-menu-panel, .locale-toolbar .language-menu > .language-menu-panel {
    position: absolute; inset: auto 0 auto auto; top: calc(100% + 8px); z-index: 160;
    display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px;
    width: 320px; max-width: calc(100vw - 24px); padding: 8px; margin: 0;
    max-height: min(60vh, 460px); max-height: min(60dvh, 460px);
    overflow-y: auto; overscroll-behavior: contain;
    border: 1px solid #cbd5e1; border-radius: 16px; background: #fff;
    box-shadow: 0 16px 48px rgba(15,23,42,.2); color: #334155;
}
.language-menu:not([open]) > .language-menu-panel { display: none; }
.language-menu > .language-menu-panel a, .locale-toolbar .language-menu > .language-menu-panel a {
    display: flex; align-items: center; min-width: 0; min-height: 44px; margin: 0; padding: 10px;
    border-radius: 8px; font: 600 14px/1.4 var(--font-family, var(--tool-font-family, Arial, sans-serif));
    color: inherit; text-decoration: none; overflow-wrap: anywhere;
}
.language-menu > .language-menu-panel a:hover,
.language-menu > .language-menu-panel a[aria-current="page"] { background: #ccfbf1; color: #115e59; }
.language-menu > summary:focus-visible, .language-menu > .language-menu-panel a:focus-visible {
    outline: 2px solid #0f766e; outline-offset: 2px;
}
[data-theme="dark"] .language-menu > .language-menu-panel,
body[data-theme="dark"] .locale-toolbar .language-menu > .language-menu-panel {
    background: #1e293b; color: #e2e8f0; border-color: #475569;
}
[data-theme="dark"] .language-menu > .language-menu-panel a[aria-current="page"],
[data-theme="dark"] .language-menu > .language-menu-panel a:hover { background: #134e4a; color: #99f6e4; }
@media (max-width: 640px) {
    .page-home .footer-brand { width: 100%; min-width: 0; }
    .page-home .footer-top { grid-template-columns: minmax(0, 1fr); }
    .page-home .app-header .header-actions { display: flex; justify-content: flex-end; align-items: center; gap: 8px; width: 100%; }
    .app-header .brand { min-width: 0; gap: 10px; }
    .app-header .brand-logo { width: 40px; height: 40px; flex: 0 0 40px; }
    .app-header .brand-text { min-width: 0; }
    .app-header .brand-text .brand-name { font-size: 1.2rem; }
    .app-header .brand-text p { font-size: .8rem; line-height: 1.45; }
    .language-menu > summary, .locale-toolbar .language-menu > summary { padding-inline: 12px; }
    .language-menu[open] > .language-menu-panel, .locale-toolbar .language-menu[open] > .language-menu-panel {
        position: fixed; top: auto; bottom: max(12px, env(safe-area-inset-bottom));
        left: 12px; right: 12px; width: auto; max-width: none; max-height: 65vh; max-height: 65dvh;
        z-index: 200; padding: 10px;
    }
}
@media (prefers-reduced-motion: reduce) { .language-menu * { transition: none; } }