/* Curiosa-Web — shared site chrome (header / footer / layout container).
   Self-contained: does not depend on per-page :root tokens, so it can be
   loaded by pages that style their body with inline CSS, styles.css, or
   subscribe.css without collisions. */

:root {
    --site-navy: #1e2d45;
    --site-navy-deep: #14233b;
    --site-blue: #1e3a8a;
}

/* ---- Layout container ------------------------------------------------ */
/* Header/footer bars span the full viewport width; this container keeps
   their content (and page content) in a centered, readable column. */
.site-container {
    width: min(1080px, calc(100% - 48px));
    margin: 0 auto;
}

.site-container--wide {
    width: min(1320px, calc(100% - 48px));
}

/* ---- Header ---------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    border-bottom: 1px solid rgba(229, 231, 235, 0.9);
    background: rgba(248, 250, 252, 0.9);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    min-height: 64px;
}

.site-logo {
    flex-shrink: 0;
    color: var(--site-navy);
    font-size: 22px;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.01em;
    text-decoration: none;
}

.site-logo span {
    color: var(--site-blue);
}

.site-nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
}

.site-nav__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 8px 15px;
    border: 1px solid transparent;
    border-radius: 999px;
    color: #374151;
    background: transparent;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: color 0.16s ease, background-color 0.16s ease, border-color 0.16s ease;
}

.site-nav__link:hover {
    color: var(--site-blue);
    background: rgba(30, 58, 138, 0.07);
}

.site-nav__link:focus-visible {
    outline: 2px solid var(--site-blue);
    outline-offset: 2px;
}

.site-nav__link--primary {
    color: #ffffff;
    background: var(--site-navy);
    border-color: var(--site-navy);
}

.site-nav__link--primary:hover {
    color: #ffffff;
    background: var(--site-blue);
}

/* ---- Footer ---------------------------------------------------------- */
.site-footer {
    margin-top: 56px;
    background: var(--site-navy-deep);
    color: #aeb9cc;
}

.site-footer__inner {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 32px;
    padding: 38px 0 26px;
}

.site-footer__brand {
    max-width: 340px;
}

.site-footer__logo {
    color: #ffffff;
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.01em;
}

.site-footer__logo span {
    color: #7d93c4;
}

.site-footer__tagline {
    margin: 10px 0 0;
    color: #9aa6bd;
    font-size: 13.5px;
    line-height: 1.6;
}

.site-footer__nav {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 28px;
}

.site-footer__nav a {
    color: #cdd6e6;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: color 0.16s ease;
}

.site-footer__nav a:hover {
    color: #ffffff;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.site-footer__nav a:focus-visible {
    outline: 2px solid #7d93c4;
    outline-offset: 2px;
}

.site-footer__bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px 20px;
    padding: 16px 0 26px;
    border-top: 1px solid rgba(255, 255, 255, 0.09);
    color: #8593ab;
    font-size: 12.5px;
}

/* ---- Responsive ------------------------------------------------------ */
@media (max-width: 640px) {
    .site-header__inner {
        align-items: flex-start;
        flex-direction: column;
        gap: 10px;
        padding: 12px 0;
    }

    .site-nav {
        justify-content: flex-start;
    }

    .site-footer__inner {
        flex-direction: column;
        gap: 22px;
    }

    .site-footer__bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-nav__link,
    .site-footer__nav a {
        transition: none;
    }
}