/**
 * Moontheme — Site Header
 * Floating pill header with backdrop blur glass effect.
 * Uses --mv-* design tokens only — no hardcoded brand colors.
 *
 * --mv-header-top / --mv-header-height are set on :root so JS and
 * other CSS can read the pill geometry for positioning.
 */

/* ===================================================================
   ROOT — header geometry tokens
   =================================================================== */

:root {
    --mv-header-top:    16px;
    --mv-header-height: 64px;
    --mv-header-gutter: 24px; /* space between pill edges and viewport */
}

/* ===================================================================
   SKIP LINK (accessibility)
   =================================================================== */

.skip-link {
    position: absolute;
    top: -120px;
    left: 16px;
    z-index: 10000;
    background: var(--mv-text);
    color: var(--mv-bg);
    padding: 8px 18px;
    border-radius: var(--mv-radius-sm);
    font-family: var(--mv-font-sans);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 16px;
}

/* ===================================================================
   SITE HEADER — Floating Pill
   =================================================================== */

.site-header {
    position: fixed;
    top: var(--mv-header-top);
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - var(--mv-header-gutter) * 2);
    max-width: 1420px;
    z-index: 1000;

    background: var(--mv-bg-glass, var(--mv-bg));
    border: 1px solid var(--mv-border);
    border-radius: 100px;

    backdrop-filter: blur(18px) saturate(200%);
    -webkit-backdrop-filter: blur(18px) saturate(200%);

    box-shadow: 0 2px 24px var(--mv-text-20);
    transition: box-shadow 0.35s ease, background 0.35s ease, border-color 0.35s ease;
}

.site-header.is-scrolled {
    box-shadow:
        0 4px 48px var(--mv-text-20),
        0 0 0 1px var(--mv-border);
    border-color: var(--mv-border-strong);
}

/* ===================================================================
   SITE CONTENT — push below fixed pill
   =================================================================== */

.site-content {
    padding-top: calc(var(--mv-header-top) + var(--mv-header-height) + 24px);
}

/* ===================================================================
   HEADER INNER
   =================================================================== */

.site-header__inner {
    padding: 0 20px 0 24px;
    height: var(--mv-header-height);
    display: flex;
    align-items: center;
    gap: 24px;
    position: relative;
}

/* ===================================================================
   LOGO / SITE BRANDING
   =================================================================== */

.site-branding {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    z-index: 2;
}

.site-branding .custom-logo-link {
    display: block;
    line-height: 0;
    transition: opacity 0.2s ease;
}

.site-branding .custom-logo-link:hover {
    opacity: 0.65;
}

.site-branding .custom-logo-link img,
.site-branding .custom-logo {
    height: 28px;
    width: auto;
    display: block;
}

.site-title {
    font-family: var(--mv-font-serif);
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--mv-text);
    text-decoration: none;
    display: block;
    transition: opacity 0.2s ease;
}

.site-title:hover {
    opacity: 0.6;
    color: var(--mv-text);
}

/* ===================================================================
   PRIMARY NAVIGATION
   Desktop: centered flex list
   Mobile: floating glass panel below pill
   =================================================================== */

.main-navigation {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* WordPress wp_nav_menu() output */
.main-navigation .menu {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2px;
}

.main-navigation .menu-item > a {
    display: block;
    font-family: var(--mv-font-sans);
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 0.01em;
    color: var(--mv-text-60);
    text-decoration: none;
    padding: 8px 14px;
    border-radius: var(--mv-radius-pill);
    transition: color 0.2s ease, background 0.2s ease;
    white-space: nowrap;
}

.main-navigation .menu-item > a:hover {
    color: var(--mv-text);
    background: var(--mv-border);
}

.main-navigation .menu-item.current-menu-item > a,
.main-navigation .menu-item.current_page_item > a,
.main-navigation .menu-item.current-menu-ancestor > a {
    color: var(--mv-text);
    font-weight: 500;
}

/* Mobile CTA injected inside nav panel — hidden on desktop */
.site-header__nav-cta {
    display: none;
}

/* ===================================================================
   HEADER ACTIONS (right side)
   =================================================================== */

.site-header__actions {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 2;
}

/* Desktop CTA button */
.site-header__cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--mv-font-sans);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.01em;
    color: var(--mv-bg);
    background: var(--mv-text);
    text-decoration: none;
    padding: 9px 20px;
    border-radius: var(--mv-radius-pill);
    white-space: nowrap;
    transition: opacity 0.2s ease;
}

.site-header__cta:hover {
    opacity: 0.8;
    color: var(--mv-bg);
}

/* Theme toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    padding: 0;
    background: transparent;
    border: 1px solid var(--mv-border);
    border-radius: 50%;
    color: var(--mv-text-60);
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.theme-toggle:hover {
    background: var(--mv-bg-elevated);
    color: var(--mv-text);
    border-color: var(--mv-border-strong);
}

[data-theme="light"] .theme-toggle__sun  { display: none; }
[data-theme="light"] .theme-toggle__moon { display: block; }
[data-theme="dark"]  .theme-toggle__sun  { display: block; }
[data-theme="dark"]  .theme-toggle__moon { display: none; }

/* Hamburger — circular pill button, hidden on desktop */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 38px;
    height: 38px;
    padding: 8px;
    background: transparent;
    border: 1px solid var(--mv-border);
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.menu-toggle:hover {
    background: var(--mv-bg-elevated);
    border-color: var(--mv-border-strong);
}

.menu-toggle span {
    display: block;
    width: 16px;
    height: 1.5px;
    background: var(--mv-text);
    border-radius: 1px;
    transform-origin: center;
    transition:
        transform 0.32s cubic-bezier(0.16, 1, 0.3, 1),
        opacity   0.2s ease;
}

/* Hamburger → X when menu is open */
.menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* ===================================================================
   RESPONSIVE — Tablet / Mobile (≤ 1024px)
   =================================================================== */

@media (max-width: 1024px) {
    :root {
        --mv-header-top:    12px;
        --mv-header-height: 58px;
        --mv-header-gutter: 20px;
    }

    .site-header__inner {
        padding: 0 14px 0 20px;
        gap: 0;
        justify-content: space-between;
    }

    /* Floating glass panel below the pill */
    .main-navigation {
        position: fixed;
        top: calc(var(--mv-header-top) + var(--mv-header-height) + 8px);
        left: 50%;
        transform: translateX(-50%);
        width: calc(100% - var(--mv-header-gutter) * 2);
        max-width: 1420px;
        flex: none;
        display: block;

        background: var(--mv-bg-glass, var(--mv-bg));
        border: 1px solid var(--mv-border);
        border-radius: 24px;
        backdrop-filter: blur(18px) saturate(200%);
        -webkit-backdrop-filter: blur(18px) saturate(200%);
        box-shadow: 0 8px 48px var(--mv-text-20);

        overflow: hidden;
        max-height: 0;
        opacity: 0;
        pointer-events: none;
        transition:
            max-height 0.42s cubic-bezier(0.16, 1, 0.3, 1),
            opacity    0.3s ease;
    }

    .main-navigation.toggled {
        max-height: 560px;
        opacity: 1;
        pointer-events: auto;
    }

    .main-navigation .menu {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 16px 16px 4px;
    }

    .main-navigation .menu-item {
        border-bottom: 1px solid var(--mv-border);
    }

    .main-navigation .menu-item:last-child {
        border-bottom: none;
    }

    .main-navigation .menu-item > a {
        font-size: 16px;
        font-weight: 400;
        padding: 16px 12px;
        border-radius: 0;
        color: var(--mv-text-75);
        letter-spacing: 0;
    }

    .main-navigation .menu-item > a:hover {
        color: var(--mv-text);
        background: var(--mv-bg-elevated);
        border-radius: var(--mv-radius-sm);
    }

    /* Mobile CTA inside the nav panel */
    .site-header__nav-cta {
        display: block;
        padding: 16px 16px 20px;
    }

    .site-header__nav-cta .mv-button {
        width: 100%;
        justify-content: center;
        font-size: 14px;
        padding: 14px 24px;
    }

    /* Hide desktop CTA from actions — shown in mobile menu instead */
    .site-header__cta {
        display: none;
    }

    /* Show hamburger */
    .menu-toggle {
        display: flex;
    }
}

/* ===================================================================
   RESPONSIVE — Mobile (≤ 768px)
   =================================================================== */

@media (max-width: 768px) {
    :root {
        --mv-header-top:    10px;
        --mv-header-height: 54px;
        --mv-header-gutter: 16px;
    }

    .site-header__inner {
        padding: 0 12px 0 18px;
    }
}

/* ===================================================================
   FOOTER
   =================================================================== */

.site-footer__inner {
    max-width: 1420px;
    margin: 0 auto;
    padding: 20px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.site-footer__nav .menu {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
}

.site-footer__nav .menu-item > a {
    font-family: var(--mv-font-sans);
    font-size: 13px;
    color: var(--mv-text-50);
    text-decoration: none;
    padding: 6px 10px;
    border-radius: var(--mv-radius-pill);
    transition: color 0.2s ease;
}

.site-footer__nav .menu-item > a:hover {
    color: var(--mv-text);
}

.site-footer__meta {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.site-footer__copy {
    font-family: var(--mv-font-sans);
    font-size: 13px;
    color: var(--mv-text-40);
}

.site-footer__dev {
    font-family: var(--mv-font-sans);
    font-size: 13px;
    color: var(--mv-text-40);
}

.site-footer__dev a {
    color: var(--mv-text-50);
    text-decoration: none;
    margin-left: 8px;
    transition: color 0.2s;
}

.site-footer__dev a:hover {
    color: var(--mv-text);
}

.theme-toggle--footer {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

@media (max-width: 768px) {
    .site-footer__inner {
        padding: 20px 16px;
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
}