/* Global header with mega-menus (spec §03). Built on tdc-tokens.css: no hex value,
   rgb() or color keyword here. Dark mode comes from the token layer.
   The markup is injected by /js/site-nav.js into <nav class="navbar site-nav">. */

.site-nav { padding: 0; }
.site-nav .sn-bar {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    min-height: 64px;
    padding: 0 1.25rem;
    max-width: 1320px;
    margin: 0 auto;
}
.site-nav .sn-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-right: 1rem;
    font-size: 1.35rem;
    font-weight: var(--weight-semibold);
    color: var(--text-primary);
    text-decoration: none;
    white-space: nowrap;
}
.site-nav .sn-brand svg { color: var(--accent-text); }

.site-nav .sn-items { display: flex; align-items: center; gap: 0.15rem; list-style: none; margin: 0; padding: 0; flex: 1; }
.site-nav .sn-items > li { position: static; }

/* Utilities outside the menu: currency switch and language picker, right end of the bar */
.site-nav .sn-utils { display: inline-flex; align-items: center; gap: 0.5rem; margin-left: auto; flex-shrink: 0; }
.site-nav .sn-lang-wrap { position: relative; }

.site-nav .sn-item {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: none;
    border: 0;
    border-radius: var(--radius-control);
    padding: 0.5rem 0.75rem;
    color: var(--text-body);
    font-family: inherit;
    font-size: var(--text-label);
    font-weight: var(--weight-semibold);
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
    transition: background var(--duration) var(--easing), color var(--duration) var(--easing);
}
.site-nav .sn-item:hover { background: var(--surface-subtle); color: var(--text-primary); }
.site-nav .sn-item.active, .site-nav .sn-item[aria-expanded="true"] { background: var(--interactive-subtle); color: var(--interactive); }
.site-nav .sn-item:focus-visible { outline: 2px solid var(--interactive); outline-offset: 2px; }
.site-nav .sn-item .sn-caret { font-size: 0.7em; transition: transform var(--duration) var(--easing); }
.site-nav .sn-item[aria-expanded="true"] .sn-caret { transform: rotate(180deg); }

/* The persistent primary action: accent fill, --on-accent text per the token contract */
.site-nav .sn-cta, .site-nav .sn-cta:hover, .site-nav .sn-cta:focus-visible {
    background: var(--accent);
    color: var(--on-accent);
    border-radius: var(--radius-control);
    padding: 0.55rem 0.95rem;
    font-size: var(--text-label);
    font-weight: var(--weight-semibold);
    text-decoration: none;
    white-space: nowrap;
    margin-left: 0.5rem;
}
.site-nav .sn-cta:hover { background: var(--accent-hover); }
.site-nav .sn-cta:focus-visible { outline: 2px solid var(--interactive); outline-offset: 2px; }

/* Panels: mega-menus and the language list */
.site-nav .sn-panel {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    z-index: 1030;
    background: var(--surface-card);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 16px 32px -20px var(--surface-overlay);
}
.site-nav .sn-panel.open { display: block; }
.site-nav .sn-panel-inner { max-width: 1320px; margin: 0 auto; padding: 1.5rem 1.25rem; }
.site-nav .sn-grid { display: grid; grid-template-columns: 1.15fr 1.15fr 0.8fr; gap: 1.75rem; }
.site-nav .sn-panel h5 {
    color: var(--accent-text);
    font-size: var(--text-caption);
    font-weight: var(--weight-semibold);
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin: 0 0 0.75rem;
}
.site-nav .sn-panel h5 + h5 { margin-top: 1.25rem; }
.site-nav .sn-panel h5.sn-h5-gap { margin-top: 1.25rem; }
.site-nav .sn-link {
    display: block;
    padding: 0.5rem 0.65rem;
    border-radius: var(--radius-control);
    text-decoration: none;
    color: var(--text-body);
    margin-bottom: 0.15rem;
}
.site-nav .sn-link:hover, .site-nav .sn-link:focus-visible { background: var(--surface-subtle); outline: none; }
.site-nav .sn-link:focus-visible { box-shadow: var(--focus-ring); }
.site-nav .sn-link b { display: block; color: var(--text-primary); font-size: var(--text-label); font-weight: var(--weight-semibold); }
.site-nav .sn-link small { display: block; color: var(--text-secondary); font-size: var(--text-caption); line-height: 1.4; }

.site-nav .sn-pill {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: var(--weight-semibold);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.15rem 0.45rem;
    border-radius: var(--radius-pill);
    vertical-align: middle;
    margin-left: 0.4rem;
}
.site-nav .sn-pill-free { background: var(--success-bg); color: var(--success); }
.site-nav .sn-pill-rec { background: var(--surface-subtle); color: var(--accent-text); border: 1px solid var(--accent); }
.site-nav .sn-pill-new { background: var(--interactive-subtle); color: var(--interactive); }
.site-nav .sn-pill-soon { background: var(--surface-subtle); color: var(--text-secondary); }

.site-nav .sn-aside { background: var(--interactive-subtle); border-radius: var(--radius-control); padding: 1rem 1.1rem; }
.site-nav .sn-aside h5 { color: var(--text-primary); }
.site-nav .sn-aside p { color: var(--text-body); font-size: var(--text-caption); line-height: 1.5; margin: 0 0 0.75rem; }
.site-nav .sn-aside .sn-btn {
    display: inline-block;
    background: var(--brand-navy);
    color: var(--text-on-dark);
    border-radius: var(--radius-control);
    padding: 0.45rem 0.85rem;
    font-size: var(--text-caption);
    font-weight: var(--weight-semibold);
    text-decoration: none;
}
.site-nav .sn-aside .sn-btn:focus-visible { outline: 2px solid var(--interactive); outline-offset: 2px; }

/* Language list: a narrow panel under its trigger */
.site-nav .sn-currency { display: inline-flex; align-items: center; border: 1.5px solid var(--border-strong); border-radius: var(--radius-pill); overflow: hidden; }
.site-nav .sn-cur { background: var(--surface-card); color: var(--text-body); border: 0; padding: 0.35rem 0.7rem; font-size: var(--text-caption); font-weight: var(--weight-semibold); letter-spacing: 0.04em; cursor: pointer; }
.site-nav .sn-cur[aria-pressed="true"] { background: var(--action-primary-bg); color: var(--action-primary-text); }
.site-nav .sn-cur:focus-visible { outline: 2px solid var(--interactive); outline-offset: -2px; }

.site-nav .sn-panel.sn-lang { left: auto; right: 0; top: calc(100% + 0.35rem); width: 12rem; border: 1px solid var(--border); border-radius: var(--radius-card); }
.site-nav .sn-panel.sn-lang .sn-panel-inner { padding: 0.5rem; }
.site-nav .sn-lang .sn-link { padding: 0.45rem 0.65rem; font-size: var(--text-label); }

/* Hamburger (drawer under 820px) */
.site-nav .sn-burger {
    display: none;
    margin-left: auto;
    background: none;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-control);
    padding: 0.4rem 0.6rem;
    color: var(--text-primary);
    cursor: pointer;
}
.site-nav .sn-burger:focus-visible { box-shadow: var(--focus-ring); outline: none; }
.site-nav .sn-burger-icon { display: inline-block; width: 1.25em; height: 2px; background: var(--text-primary); box-shadow: 0 0.4em 0 0 var(--text-primary), 0 -0.4em 0 0 var(--text-primary); vertical-align: middle; }

@media (max-width: 819.98px) {
    .site-nav .sn-bar { flex-wrap: wrap; padding: 0.5rem 1rem; }
    .site-nav .sn-burger { display: inline-block; }
    .site-nav .sn-cta { order: 3; margin: 0 0.5rem 0 auto; }
    .site-nav .sn-burger { order: 4; margin-left: 0; }
    .site-nav .sn-items { display: none; order: 10; flex-basis: 100%; flex-direction: column; align-items: stretch; gap: 0; padding: 0.5rem 0 0.75rem; border-top: 1px solid var(--border); margin-top: 0.5rem; }
    .site-nav.sn-open .sn-items { display: flex; }
    .site-nav .sn-items > li { position: relative; }
    .site-nav .sn-items .sn-item { width: 100%; justify-content: space-between; padding: 0.7rem 0.5rem; }
    .site-nav .sn-utils { order: 2; margin-left: auto; gap: 0.35rem; }
    .site-nav .sn-cta { order: 3; margin-left: 0.5rem; }
    .site-nav .sn-lang-btn { padding: 0.4rem 0.5rem; }
    /* Panels become accordion sections */
    .site-nav .sn-panel { position: static; border: 0; box-shadow: none; background: var(--surface-subtle); border-radius: var(--radius-control); }
    .site-nav .sn-panel-inner { padding: 0.75rem 0.75rem 1rem; }
    .site-nav .sn-grid { grid-template-columns: 1fr; gap: 1rem; }
    .site-nav .sn-panel.sn-lang { position: absolute; width: 12rem; right: 0; left: auto; border: 1px solid var(--border); box-shadow: 0 16px 32px -20px var(--surface-overlay); background: var(--surface-card); }
}
@media (max-width: 479.98px) {
    .site-nav .sn-cta { order: 5; flex-basis: 100%; text-align: center; margin: 0.5rem 0 0; }
}