/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
}

/* Top Bar */
.header-top {
    background: var(--color-black);
    color: var(--color-white);
    font-size: var(--text-xs);
    height: var(--header-top-height);
    display: flex;
    align-items: center;
}

.header-top .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-availability {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: var(--weight-medium);
    color: var(--color-gold-light);
}

.header-availability svg {
    width: 14px;
    height: 14px;
    fill: var(--color-gold);
}

.header-contact-link {
    color: var(--color-white);
    font-weight: var(--weight-medium);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.header-contact-link:hover {
    color: var(--color-gold-light);
}

.header-contact-link svg {
    width: 12px;
    height: 12px;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.lang-switch a {
    color: var(--color-gray-400);
    text-decoration: none;
    font-weight: var(--weight-medium);
    font-size: var(--text-xs);
    padding: var(--space-1);
}

.lang-switch a:hover,
.lang-switch a[aria-current="true"] {
    color: var(--color-white);
}

.lang-switch-sep {
    color: var(--color-gray-600);
    font-size: var(--text-xs);
}

/* Hide some items on mobile */
@media (max-width: 767px) {
    .header-availability-text {
        display: none;
    }
}

/* Main Header */
.header-main {
    height: var(--header-main-height);
    display: flex;
    align-items: center;
}

.header-main-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.logo-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    flex-shrink: 0;
}

.logo-link img {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
}

.logo-text {
    font-size: var(--text-sm);
    font-weight: var(--weight-bold);
    color: var(--color-gray-900);
    line-height: var(--leading-tight);
    display: none;
}

@media (min-width: 576px) {
    .logo-text {
        display: block;
    }
}

@media (min-width: 1024px) {
    .logo-link img {
        width: 56px;
        height: 56px;
    }
    .logo-text {
        font-size: var(--text-base);
    }
}

/* Nav Toggle (Hamburger) */
.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: calc(var(--z-nav-mobile) + 1);
}

.nav-toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    border-radius: 2px;
    transition: transform var(--transition-normal), opacity var(--transition-fast);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

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

/* Desktop: hide toggle */
@media (min-width: 1024px) {
    .nav-toggle {
        display: none;
    }
}

/* Navigation */
.main-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    background: var(--color-white);
    z-index: var(--z-nav-mobile);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    box-shadow: var(--shadow-xl);
    padding: var(--space-20) var(--space-6) var(--space-6);
    overflow-y: auto;
}

.main-nav.is-open {
    transform: translateX(0);
}

.nav-list {
    display: flex;
    flex-direction: column;
}

.nav-list a {
    display: block;
    padding: var(--space-3) var(--space-2);
    font-size: var(--text-base);
    font-weight: var(--weight-bold);
    color: var(--color-black);
    text-decoration: none;
    border-bottom: 1px solid var(--color-gray-100);
    transition: color var(--transition-fast);
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--color-gold-dark);
}

.nav-list a.active {
    font-weight: var(--weight-semibold);
}

/* Nav overlay (backdrop) */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-nav-mobile) - 1);
}

body.nav-open .nav-overlay {
    display: block;
}

body.nav-open {
    overflow: hidden;
}

/* Desktop nav */
@media (min-width: 1024px) {
    .main-nav {
        position: static;
        width: auto;
        background: none;
        transform: none;
        box-shadow: none;
        padding: 0;
        overflow: visible;
        transition: none;
    }

    .nav-list {
        flex-direction: row;
        gap: var(--space-1);
    }

    .nav-list a {
        padding: var(--space-2) var(--space-3);
        font-size: var(--text-sm);
        border-bottom: none;
        border-radius: var(--radius-md);
        position: relative;
    }

    .nav-list a:hover {
        background: var(--color-gray-50);
    }

    .nav-list a.active {
        color: var(--color-gold-dark);
        background: var(--color-gold-bg);
    }

    .nav-overlay {
        display: none !important;
    }
}