/* ============================================================
   primae-domains.css — tabbed explorer for section#focus
   ("Where we can help"). Adds ONLY the tab bar, panel
   show/hide, and switch transitions. Existing .domain /
   .card / .chip styling is untouched.
   All new classes are prefixed pm-dom- .
   Progressive enhancement: without JS the tab bar stays
   hidden and all four .domain blocks render stacked, exactly
   as before. primae-domains.js adds .pm-dom-js on init.
   ============================================================ */

/* ---- Tab bar (hidden until JS initializes) ------------------ */
#pm-domains .pm-dom-tabs {
    position: relative;
    display: none;
    align-items: stretch;
    gap: 4px;
    margin-bottom: clamp(28px, 4vw, 44px);
    border-bottom: 1px solid rgba(26, 26, 23, 0.14);
}

#pm-domains.pm-dom-js .pm-dom-tabs { display: flex; }

#pm-domains .pm-dom-tab {
    appearance: none;
    -webkit-appearance: none;
    background: none;
    border: 0;
    margin: 0;
    cursor: pointer;
    display: inline-flex;
    align-items: baseline;
    gap: 9px;
    padding: 12px 16px 14px;
    border-radius: 10px 10px 0 0;
    font-family: var(--font-mono, ui-monospace, Menlo, monospace);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    line-height: 1.35;
    color: var(--color-muted, #6c6b61);
    white-space: nowrap;
    transition: color 0.2s ease;
}

#pm-domains .pm-dom-tab:hover,
#pm-domains .pm-dom-tab[aria-selected="true"] { color: var(--color-text, #1a1a17); }

#pm-domains .pm-dom-tab:focus-visible {
    outline: 2px solid var(--accent, #d9542b);
    outline-offset: -2px;
}

#pm-domains .pm-dom-tab-num {
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    color: var(--color-muted, #6c6b61);
    transition: color 0.2s ease;
}

#pm-domains .pm-dom-tab[aria-selected="true"] .pm-dom-tab-num { color: var(--accent, #d9542b); }

/* Sliding accent indicator — one element, moved by JS via
   transform/width, so the underline glides between tabs.
   Anchored top-left of the tablist; JS translates it to sit
   flush under the active tab (works for wrapped 2x2 rows too). */
#pm-domains .pm-dom-ind {
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent, #d9542b);
    transform: translate(0, 0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform, width;
    pointer-events: none;
}

/* ---- Panels -------------------------------------------------- */
/* Default (no JS): panels are plain blocks — all four domains
   stacked, the original page behavior. */
#pm-domains .pm-dom-panel { min-width: 0; }

#pm-domains.pm-dom-js .pm-dom-panel { display: none; }

#pm-domains.pm-dom-js .pm-dom-panel.pm-dom-on {
    display: block;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.25s ease, transform 0.25s ease;
}

/* incoming start state (JS removes it right after a reflow) */
#pm-domains.pm-dom-js .pm-dom-panel.pm-dom-enter {
    opacity: 0;
    transform: translateY(10px);
}

/* outgoing fade (quick, before the incoming panel enters) */
#pm-domains.pm-dom-js .pm-dom-panel.pm-dom-exit {
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity 0.12s ease, transform 0.12s ease;
}

/* ---- Narrow screens: tabs wrap to a 2x2 grid ----------------- */
@media (max-width: 900px) {
    #pm-domains.pm-dom-js .pm-dom-tabs {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0;
    }
    #pm-domains .pm-dom-tab {
        justify-content: flex-start;
        text-align: left;
        white-space: normal;
        padding: 11px 10px 13px;
    }
}

@media (max-width: 420px) {
    #pm-domains .pm-dom-tab { font-size: 0.75rem; gap: 7px; }
}

/* ---- Reduced motion: instant switch, no travel --------------- */
@media (prefers-reduced-motion: reduce) {
    #pm-domains .pm-dom-tab,
    #pm-domains .pm-dom-tab-num,
    #pm-domains .pm-dom-ind,
    #pm-domains.pm-dom-js .pm-dom-panel.pm-dom-on,
    #pm-domains.pm-dom-js .pm-dom-panel.pm-dom-exit { transition: none; }

    #pm-domains.pm-dom-js .pm-dom-panel.pm-dom-enter {
        opacity: 1;
        transform: none;
    }
}

@media (max-width: 430px) {
    .pm-dom-tab { font-size: 0.75rem; }
}