/**
 * Public site navigation — legacy (V1 theme vars) + shared drawer/mega patterns.
 */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:root {
    --site-header-h: 72px;
    --site-header-h-scrolled: 60px;
    --site-nav-transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Legacy site header ─── */
.site-header {
    --nav-header-h: var(--site-header-h);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-header-h);
    background: color-mix(in srgb, var(--header-bg) 92%, transparent);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
    transition: height var(--site-nav-transition), box-shadow var(--site-nav-transition), background var(--site-nav-transition);
}

.site-header.is-scrolled {
    --nav-header-h: var(--site-header-h-scrolled);
    box-shadow: 0 8px 28px var(--shadow-color);
}

.site-header .header-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 clamp(1rem, 4vw, 1.5rem);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
}

.site-header .logo {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    text-decoration: none;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--header-text);
    flex-shrink: 0;
    transition: transform var(--site-nav-transition);
}

.site-header.is-scrolled .logo img,
.site-header.is-scrolled .logo .site-logo-img {
    height: 34px;
}

.site-header .logo img,
.site-header .logo .site-logo-img {
    height: 38px;
    width: auto;
    transition: height var(--site-nav-transition);
}

.site-header-spacer {
    height: var(--site-header-h);
}

/* ─── Desktop nav (site) ─── */
.site-nav {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    margin-left: auto;
}

.site-nav__item {
    position: relative;
}

.site-nav__link,
.site-nav__trigger {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.55rem 0.8rem;
    border: none;
    background: none;
    color: var(--header-text);
    font: inherit;
    font-size: 0.94rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--border-radius, 8px);
    cursor: pointer;
    opacity: 0.9;
    transition: color var(--site-nav-transition), background var(--site-nav-transition), opacity var(--site-nav-transition);
}

.site-nav__link:hover,
.site-nav__link.is-active,
.site-nav__trigger:hover,
.site-nav__item.is-active .site-nav__trigger,
.site-nav__item.is-open .site-nav__trigger {
    opacity: 1;
    color: var(--primary);
    background: color-mix(in srgb, var(--primary) 8%, transparent);
}

.site-nav__link:focus-visible,
.site-nav__trigger:focus-visible,
.site-menu-toggle:focus-visible,
.site-drawer__accordion:focus-visible,
.site-drawer__close:focus-visible,
.site-drawer__link:focus-visible,
.site-drawer__sublink:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.site-nav__chevron {
    width: 0.7rem;
    height: 0.7rem;
    transition: transform var(--site-nav-transition);
}

.site-nav__item.is-open .site-nav__chevron {
    transform: rotate(180deg);
}

/* ─── Dropdown & mega (site) ─── */
.site-dropdown,
.site-mega {
    position: absolute;
    top: calc(100% + 0.45rem);
    left: 50%;
    transform: translateX(-50%) translateY(6px);
    min-width: 15rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: calc(var(--border-radius, 8px) + 4px);
    box-shadow: 0 18px 48px var(--shadow-color);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--site-nav-transition), transform var(--site-nav-transition), visibility var(--site-nav-transition);
    z-index: 1002;
}

.site-nav__item.is-open .site-dropdown,
.site-nav__item.is-open .site-mega {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.site-dropdown__inner {
    padding: 0.45rem;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.site-dropdown__link {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    padding: 0.7rem 0.85rem;
    border-radius: var(--border-radius, 8px);
    text-decoration: none;
    color: var(--text);
    transition: background var(--site-nav-transition), color var(--site-nav-transition);
}

.site-dropdown__link:hover,
.site-dropdown__link.is-active {
    background: color-mix(in srgb, var(--primary) 10%, transparent);
    color: var(--primary);
}

.site-nav__link-title {
    font-weight: 600;
    font-size: 0.92rem;
}

.site-nav__link-desc {
    font-size: 0.8rem;
    color: var(--text-light);
    line-height: 1.35;
}

.site-mega {
    width: min(44rem, calc(100vw - 2rem));
}

.site-mega__inner {
    padding: 1rem;
}

.site-mega__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.45rem;
}

.site-mega__item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: calc(var(--border-radius, 8px) + 2px);
    text-decoration: none;
    color: var(--text);
    border: 1px solid transparent;
    transition: background var(--site-nav-transition), border-color var(--site-nav-transition), color var(--site-nav-transition);
}

.site-mega__item:hover,
.site-mega__item.is-active {
    background: color-mix(in srgb, var(--primary) 8%, transparent);
    border-color: color-mix(in srgb, var(--primary) 18%, transparent);
    color: var(--primary);
}

.site-mega__item--featured {
    grid-column: 1 / -1;
    background: color-mix(in srgb, var(--primary) 6%, var(--bg-secondary));
    border-color: color-mix(in srgb, var(--primary) 14%, transparent);
}

.site-mega__title {
    display: block;
    font-weight: 600;
    font-size: 0.92rem;
}

.site-mega__desc {
    display: block;
    margin-top: 0.15rem;
    font-size: 0.8rem;
    color: var(--text-light);
    line-height: 1.35;
}

/* ─── Header actions (site) ─── */
.site-header__actions {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-shrink: 0;
}

.site-header__actions .btn {
    padding: 0.55rem 1.1rem;
    font-size: 0.88rem;
}

.theme-switcher {
    position: relative;
}

.theme-switcher-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius, 8px);
    background: var(--bg-color);
    color: var(--header-text);
    cursor: pointer;
    transition: background var(--site-nav-transition), border-color var(--site-nav-transition);
}

.theme-switcher-btn:hover {
    border-color: var(--primary);
    background: var(--bg-secondary);
}

.theme-dropdown {
    position: absolute;
    top: calc(100% + 0.45rem);
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: calc(var(--border-radius, 8px) + 4px);
    box-shadow: 0 14px 40px var(--shadow-color);
    padding: 0.45rem;
    min-width: 11rem;
    display: none;
    z-index: 1003;
}

.theme-dropdown.active {
    display: block;
}

.theme-option {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    width: 100%;
    padding: 0.6rem 0.7rem;
    border: none;
    background: none;
    cursor: pointer;
    border-radius: var(--border-radius, 8px);
    text-align: left;
    color: var(--text);
    transition: background var(--site-nav-transition);
}

.theme-option:hover {
    background: var(--bg-color);
}

.theme-option.active {
    background: var(--primary);
    color: var(--btn-primary-text, #fff);
}

.theme-color {
    width: 1.35rem;
    height: 1.35rem;
    border-radius: 50%;
    flex-shrink: 0;
}

.theme-name {
    font-size: 0.88rem;
    font-weight: 500;
}

/* ─── Menu toggle ─── */
.site-menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 2.6rem;
    height: 2.6rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius, 8px);
    background: var(--bg-color);
    color: var(--header-text);
    cursor: pointer;
}

.site-menu-toggle__bars {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 18px;
}

.site-menu-toggle__bars span {
    display: block;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: transform var(--site-nav-transition), opacity var(--site-nav-transition);
}

.site-menu-toggle[aria-expanded="true"] .site-menu-toggle__bars span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.site-menu-toggle[aria-expanded="true"] .site-menu-toggle__bars span:nth-child(2) {
    opacity: 0;
}

.site-menu-toggle[aria-expanded="true"] .site-menu-toggle__bars span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ─── Premium drawer (site) ─── */
.site-drawer {
    position: fixed;
    inset: 0;
    z-index: 1100;
    pointer-events: none;
}

.site-drawer.is-open {
    pointer-events: auto;
}

.site-drawer__backdrop {
    position: absolute;
    inset: 0;
    background: color-mix(in srgb, var(--dark, #1a1a2e) 55%, transparent);
    opacity: 0;
    transition: opacity var(--site-nav-transition);
}

.site-drawer.is-open .site-drawer__backdrop {
    opacity: 1;
}

.site-drawer__panel {
    position: absolute;
    top: 0;
    right: 0;
    width: min(22rem, 92vw);
    height: 100%;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    box-shadow: -12px 0 40px var(--shadow-color);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform var(--site-nav-transition);
}

.site-drawer.is-open .site-drawer__panel {
    transform: translateX(0);
}

.site-drawer__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.15rem;
    border-bottom: 1px solid var(--border-color);
}

.site-drawer__logo {
    text-decoration: none;
    color: var(--header-text);
}

.site-drawer__logo img,
.site-drawer__logo .site-logo-img {
    height: 34px;
    width: auto;
}

.site-drawer__close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.4rem;
    height: 2.4rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius, 8px);
    background: var(--bg-color);
    color: var(--text);
    cursor: pointer;
}

.site-drawer__nav {
    flex: 1;
    overflow-y: auto;
    padding: 0.75rem 1.15rem 1.25rem;
}

.site-drawer__section + .site-drawer__section {
    border-top: 1px solid var(--border-color);
}

.site-drawer__link,
.site-drawer__accordion {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.95rem 0;
    border: none;
    background: none;
    color: var(--text);
    font: inherit;
    font-size: 1.02rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
}

.site-drawer__accordion svg {
    width: 0.85rem;
    height: 0.85rem;
    transition: transform var(--site-nav-transition);
}

.site-drawer__section.is-open .site-drawer__accordion svg {
    transform: rotate(180deg);
}

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

.site-drawer__section.is-open .site-drawer__panel {
    display: block;
    padding-bottom: 0.75rem;
}

.site-drawer__sublink {
    display: block;
    padding: 0.65rem 0 0.65rem 0.75rem;
    color: var(--text);
    text-decoration: none;
    font-size: 0.95rem;
    border-left: 2px solid var(--border-color);
    margin-left: 0.25rem;
}

.site-drawer__sublink:hover,
.site-drawer__sublink.is-active {
    color: var(--primary);
    border-left-color: var(--primary);
}

.site-drawer__subdesc {
    margin: 0.15rem 0 0.5rem 0.9rem;
    font-size: 0.82rem;
    color: var(--text-light);
    line-height: 1.4;
}

.site-drawer__footer {
    padding: 1rem 1.15rem 1.35rem;
    border-top: 1px solid var(--border-color);
}

.site-drawer__cta {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.site-drawer__cta .btn {
    width: 100%;
    justify-content: center;
}

@media (max-width: 1024px) {
    .site-mega__grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .site-nav,
    .site-header__actions .btn,
    .theme-switcher {
        display: none;
    }

    .site-menu-toggle {
        display: inline-flex;
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-header,
    .site-dropdown,
    .site-mega,
    .site-drawer__panel,
    .site-drawer__backdrop,
    .site-nav__chevron,
    .site-menu-toggle__bars span {
        transition: none;
    }
}