/* =============================================
   HEADER & NAVIGATION
   Design: Logo CENTRE, nav underneath (desktop)
   Dark background, orange active state
   ============================================= */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    background-color: var(--color-bg-darkest);
    transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.site-header.scrolled {
    background-color: rgba(10, 10, 10, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.site-header.scrolled .header-inner {
    padding-top: var(--space-2);
}

.site-header.scrolled .main-nav {
    margin-top: var(--space-1);
    padding-bottom: var(--space-1);
}

/* ---- Header inner: logo row ---- */
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ---- Logo ---- */
.header-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.header-logo img {
    height: 40px;
    width: auto;
}

/* ---- Main Nav (Desktop - hidden on mobile) ---- */
.main-nav {
    display: none;
}

.nav-list {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
}

.nav-link {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    color: var(--color-text-white);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    text-decoration: none;
    transition: color var(--transition-fast);
    white-space: nowrap;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

/* More dropdown */
.nav-more {
    position: relative;
}

.nav-chevron {
    font-size: 0.65em;
    margin-left: var(--space-1);
    transition: transform var(--transition-fast);
}

.nav-more.open .nav-chevron {
    transform: rotate(180deg);
}

.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background-color: var(--color-bg-darker);
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-md);
    min-width: 220px;
    padding: var(--space-2) 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
    box-shadow: var(--shadow-lg);
}

.nav-more.open .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-link {
    display: block;
    padding: var(--space-3) var(--space-5);
    color: var(--color-text-light);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-regular);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.dropdown-link:hover,
.dropdown-link.active {
    background-color: var(--color-bg-card);
    color: var(--color-primary);
}

/* ---- Mobile Menu Toggle ---- */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 30px;
    height: 30px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: calc(var(--z-overlay) + 1);
}

.hamburger-line {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text-white);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---- Mobile Nav Panel ---- */
.mobile-nav {
    position: fixed;
    top: var(--header-height);
    right: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: var(--color-bg-darker);
    overflow-y: auto;
    transition: right var(--transition-base);
    z-index: var(--z-overlay);
    padding: var(--space-6);
}

.mobile-nav.open {
    right: 0;
}

.mobile-nav-list {
    margin-bottom: var(--space-8);
}

.mobile-nav-link {
    display: block;
    padding: var(--space-4) 0;
    color: var(--color-text-white);
    font-size: var(--text-lg);
    font-weight: var(--font-weight-medium);
    border-bottom: 1px solid var(--color-border-dark);
    transition: color var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    color: var(--color-primary);
}

.mobile-nav-divider {
    border-bottom: 2px solid var(--color-primary);
    margin: var(--space-2) 0;
	display: none;
}

.mobile-nav-contact {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

/* Mobile overlay behind nav */
.mobile-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 180;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Body padding for fixed header (mobile = single row) */
body {
    padding-top: var(--header-height);
}

/* =============================================
   RESPONSIVE
   ============================================= */

/* Desktop (992px+): stacked logo + nav */
@media (min-width: 992px) {
    :root {
        --header-logo-height: 60px;
        --header-nav-padding: var(--space-2);
        /* Match the logo row, nav spacing, and link line height exactly. */
        --header-height: calc(var(--space-4) + var(--header-logo-height) + var(--space-3) + var(--text-sm) * var(--leading-normal) + var(--header-nav-padding) * 2 + var(--space-2));
    }

    .site-header {
        /* Let the header height be auto for stacked layout */
    }

    .header-inner {
        justify-content: center;
        height: auto;
        padding-top: var(--space-4);
        padding-bottom: 0;
    }

    .header-logo img {
        height: var(--header-logo-height);
    }

    .main-nav {
        display: block;
        max-width: var(--container-wide);
        margin: 0 auto;
        padding: 0 var(--container-padding) var(--space-2);
        border-top: none;
        margin-top: var(--space-3);
        position: relative;
    }

    .main-nav::before {
        content: '';
        position: absolute;
        top: 0;
        left: var(--container-padding);
        right: var(--container-padding);
        height: 1px;
        background: linear-gradient(to right, transparent 0%, #f16237 50%, transparent 100%);
    }

    .nav-list {
        gap: 0;
    }

    .mobile-menu-toggle {
        display: none;
    }

    .mobile-nav {
        display: none;
    }
}

@media (min-width: 1200px) {
    :root {
        --header-logo-height: 68px;
        --header-nav-padding: var(--space-3);
    }

    .header-logo img {
        height: var(--header-logo-height);
    }

    .nav-link {
        padding: var(--space-3) var(--space-5);
        font-size: var(--text-sm);
    }
}