/* ═══════════════════════════════════════════════════════════════════
   site-shell.css — Componentes compartidos de navegación y footer
   (Punto 5B, Bloque 1). Usa SOLO tokens de tokens.css.
   Base estructural: header global, menú móvil, footer legal.
   El sistema visual definitivo (Bloque 2) refinará estos componentes.
   ═══════════════════════════════════════════════════════════════════ */

/* ── Estructura de página (footer al final de la ventana) ──────────
   En páginas cortas el footer debe quedar al final sin franja vacía.
   body = flex columna con min-height 100vh; main crece con flex: 1. */
body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

body > main {
    flex: 1 0 auto;
    display: flex;
    flex-direction: column;
}

body > main > * { width: 100%; }

/* ── Header global ─────────────────────────────────────────────── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.site-header__inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.site-header__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
    min-height: var(--tap-target);
}

.site-header__logo img {
    height: 28px;
    width: auto;
    display: block;
}

.site-header__logo-text {
    font-weight: 800;
    font-size: 1.22rem;
    letter-spacing: -0.01em;
}

/* ── Navegación escritorio ─────────────────────────────────────── */
.site-nav {
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: 0;
}

.site-nav__list {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-nav__link {
    display: inline-flex;
    align-items: center;
    min-height: var(--tap-target);
    position: relative;
    padding: 0 11px;
    color: var(--gray-700);
    font-weight: 500;
    text-decoration: none;
}

.site-nav__link:hover { color: var(--text); text-decoration: none; }
.site-nav__link:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.site-nav__link[aria-current="page"] {
    color: var(--accent-text);
    font-weight: 700;
}

.site-nav__link[aria-current="page"]::after {
    content: "";
    position: absolute;
    left: 11px;
    right: 11px;
    bottom: 4px;
    height: 2px;
    border-radius: 2px;
    background: var(--accent);
}

.site-header__actions {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-left: 12px;
    border-left: 1px solid var(--border);
}

.site-header__auth {
    display: flex;
    align-items: center;
    gap: 8px;
}

.site-header__appearance {
    display: flex;
    align-items: center;
}

/* Botones de cuenta */
.site-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: var(--tap-target);
    padding: 0 18px;
    border-radius: 8px;
    font-size: .95rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    text-decoration: none;
    transition: background .15s;
}

.site-btn:focus-visible { outline: none; box-shadow: var(--focus-ring); }

.site-btn--ghost {
    background: transparent;
    color: var(--text);
    border-color: var(--gray-300);
}

.site-btn--ghost:hover { background: var(--surface-2); }

.site-btn--ghost[aria-current="page"] {
    border-color: var(--accent);
    color: var(--accent-text);
}

.site-btn--primary {
    background: var(--blue);
    color: var(--accent-contrast);
}

.site-btn--primary:hover { background: var(--blue-hover); }

.site-btn--link {
    background: transparent;
    color: var(--gray-700);
    padding: 0 8px;
}

.site-btn--link:hover { color: var(--text); text-decoration: underline; }

/* ── Identidad de usuario autenticado (AUTH-GOOGLE-1C) ─────────── */
.site-user {
    position: relative;
    display: flex;
    align-items: center;
}

.site-user__toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: var(--tap-target);
    padding: 0 12px 0 6px;
    border: 1px solid var(--gray-300);
    border-radius: 999px;
    background: var(--surface);
    color: var(--text);
    font-size: .95rem;
    font-weight: 600;
    cursor: pointer;
}

.site-user__toggle:hover { background: var(--surface-2); }
.site-user__toggle:focus-visible { outline: none; box-shadow: var(--focus-ring); }

.site-user__avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--accent-contrast);
    font-weight: 700;
    font-size: .9rem;
    flex: 0 0 auto;
}

.site-user__name {
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.site-user__caret {
    font-size: .7rem;
    color: var(--gray-500);
    transition: transform .15s;
}

.site-user__toggle[aria-expanded="true"] .site-user__caret { transform: rotate(180deg); }

.site-user__menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 200px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    padding: 6px;
    z-index: 1100;
}

.site-user__menu[hidden] { display: none; }

.site-user__item {
    display: flex;
    align-items: center;
    width: 100%;
    min-height: var(--tap-target);
    padding: 0 12px;
    border: none;
    background: none;
    border-radius: 8px;
    color: var(--text);
    font-size: .95rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    text-align: left;
}

.site-user__item:hover { background: var(--surface-2); }
.site-user__item:focus-visible { outline: none; box-shadow: var(--focus-ring); }

/* ── Menú móvil ────────────────────────────────────────────────── */
.site-nav__toggle {
    display: none;
    min-width: var(--tap-target);
    min-height: var(--tap-target);
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
    font-size: 1.35rem;
    line-height: 1;
    cursor: pointer;
}

.site-nav__toggle-icon {
    display: block;
    width: 1em;
    text-align: center;
}

.site-nav__toggle:focus-visible { outline: none; box-shadow: var(--focus-ring); }

@media (max-width: 820px) {
    .site-header__inner { min-height: 60px; padding: 0 16px; }
    .site-nav__toggle { display: inline-flex; align-items: center; justify-content: center; }

    .site-nav {
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        display: none;
        padding: 10px 16px 16px;
        flex-direction: column;
        align-items: stretch;
    }

    .site-nav.is-open { display: flex; }

    .site-nav__list { flex-direction: column; align-items: stretch; gap: 2px; width: 100%; }
    .site-nav__link { width: 100%; padding: 0 12px; border-radius: 8px; }
    .site-nav__link:hover { background: var(--surface-2); }
    .site-nav__link[aria-current="page"] { background: var(--accent-soft); }
    .site-nav__link[aria-current="page"]::after { display: none; }

    .site-header__actions {
        width: 100%;
        margin-top: 8px;
        padding: 12px 0 0;
        border-top: 1px solid var(--border);
        border-left: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .site-header__auth { flex-direction: column; align-items: stretch; gap: 8px; width: 100%; }
    .site-btn { width: 100%; }

    .site-user { width: 100%; }
    .site-user__toggle { width: 100%; justify-content: flex-start; }
    .site-user__name { flex: 1; text-align: left; max-width: none; }
    .site-user__menu { position: static; width: 100%; min-width: 0; margin-top: 4px; box-shadow: none; }

    .site-header__appearance { min-height: var(--tap-target); }
}

/* ── Footer legal ──────────────────────────────────────────────── */
.site-footer {
    background: var(--invert-bg);
    color: var(--invert-text);
    padding: 28px 20px;
}

.site-footer__inner {
    max-width: 1080px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    gap: 12px 28px;
    align-items: center;
    font-size: .9rem;
}

.site-footer__brand {
    font-weight: 700;
    margin-right: auto;
}

.site-footer__links { display: flex; flex-wrap: wrap; gap: 6px 20px; }

.site-footer__links a {
    color: var(--invert-text);
    opacity: .85;
    text-decoration: none;
}

.site-footer__links a:hover { opacity: 1; text-decoration: underline; }
.site-footer__links a:focus-visible { outline: 2px solid var(--invert-text); outline-offset: 2px; }