/* =====================================================
   SHARED SITE HEADER — loaded on every page
   Requires variables.css to be loaded first.
   HTML injected by assets/js/header.js
   ===================================================== */

/* ── Desktop nav ── */
.top-nav {
    background-color: var(--white);
    border-bottom: 1px solid #ddd;
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: padding 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.3s ease,
                border-bottom-color 0.3s ease;
}

.top-nav.scrolled {
    padding: 0.5rem 2rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    border-bottom-color: #e5e5e5;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo-search {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex: 1;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--black);
    transition: all 0.3s ease;
}

.nav-logo img {
    height: 40px;
    width: auto;
    transition: height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.3s ease;
}

.top-nav.scrolled .nav-logo img {
    height: 32px;
}

.nav-search-container {
    position: relative;
    flex: 1;
    max-width: 280px;
}

.nav-search {
    width: 100%;
    padding: 0.625rem 1rem;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-family: 'Hanken Grotesk', sans-serif;
    font-size: 15px;
    transition: border-color 0.25s ease,
                box-shadow 0.25s ease;
}

.nav-search:focus {
    outline: var(--focus-ring-light);
    outline-offset: var(--focus-ring-offset);
    border-color: var(--lime-green);
    box-shadow: 0 0 0 3px rgba(151, 214, 0, 0.15);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    color: var(--dark-gray);
    text-decoration: none;
    font-size: 15px;
    font-weight: 400;
    white-space: nowrap;
    transition: color 0.25s ease;
    letter-spacing: 0.01em;
}

.nav-link:hover {
    color: var(--black);
}

/* ── Mobile hamburger button ── */
.mobile-menu-button {
    display: none;
    background: none;
    border: none;
    color: var(--dark-gray);
    cursor: pointer;
    padding: 0.5rem;
    line-height: 1;
}

.mobile-menu-button .material-symbols-outlined {
    font-size: 28px;
}

/* ── Mobile menu overlay + drawer ── */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
}

.mobile-menu-overlay.active {
    display: block;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    right: -320px;
    width: 300px;
    max-width: 85vw;
    height: 100%;
    background-color: var(--white);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-menu-close {
    background: none;
    border: none;
    color: var(--dark-gray);
    cursor: pointer;
    padding: 0.25rem;
    line-height: 1;
}

.mobile-menu-close .material-symbols-outlined {
    font-size: 26px;
}

.mobile-menu-links {
    padding: 0.5rem 0;
}

.mobile-menu-link {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    color: var(--black);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    border-left: 3px solid transparent;
    transition: all 0.2s;
    min-height: 48px;
}

.mobile-menu-link:hover,
.mobile-menu-link:active {
    background-color: var(--light-gray);
    border-left-color: var(--lime-green);
}

/* ── Footer wordmark ── */
/* Eliminates the L-shaped white artifact (border/shadow on img element)
   and standardises the rendered height to match the header logo. */
.footer-logo img,
.site-footer .wordmark img,
.site-footer .footer-logo img {
    height: 40px;
    width: auto;
    border: none;
    outline: none;
    box-shadow: none;
    display: block;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-button {
        display: flex;
        align-items: center;
    }

    .mobile-menu {
        display: block;
    }

    .top-nav {
        padding: 0.75rem 1rem;
    }

    .top-nav.scrolled {
        padding: 0.5rem 1rem;
    }

    .nav-logo-search {
        gap: 0.75rem;
    }

    .nav-logo img {
        height: 32px;
    }

    .top-nav.scrolled .nav-logo img {
        height: 28px;
    }

    .nav-search {
        font-size: 14px;
        padding: 0.5rem 0.75rem;
    }
}