/**
 * THE DIGI GHOST - Header, Footer & Global Layout Architecture
 * Production-ready, zero layout shift, fully accessible.
 */

.site-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.site-main {
    flex: 1 0 auto;
}

/* ==========================================================================
   Container Scale
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

.container-narrow {
    max-width: var(--container-narrow);
}

.container-wide {
    max-width: var(--container-wide);
}

/* ==========================================================================
   Header Shell (Sticky, Zero Layout Shift)
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(8, 9, 11, 0.94);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-sticky);
    display: flex;
    align-items: center;
    transition: background-color var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.site-header.is-scrolled {
    background-color: rgba(8, 9, 11, 0.98);
    border-bottom-color: rgba(230, 25, 25, 0.2);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.7);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    height: 100%;
}

/* Brand Identity & Logo */
.site-branding {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    text-decoration: none;
}

.site-logo {
    height: 52px;
    width: 52px;
    object-fit: contain;
    border-radius: var(--radius-xs);
    transition: transform var(--transition-snappy);
    flex-shrink: 0;
}

.logo-link:hover .site-logo {
    transform: scale(1.04);
}

.brand-text-lockup {
    display: flex;
    flex-direction: column;
    justify-content: center;
    line-height: 1.15;
}

.brand-name {
    font-family: var(--font-brand-serif);
    font-size: var(--text-base);
    font-weight: 800;
    color: var(--color-brand-white);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.brand-tagline {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-brand-red);
    letter-spacing: -0.01em;
}

@media (max-width: 440px) {
    .brand-tagline {
        display: none;
    }
}

/* ==========================================================================
   Desktop Navigation & Dropdowns
   ========================================================================== */

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin: 0;
    padding: 0;
}

.nav-menu > .menu-item {
    position: relative;
}

.nav-menu > .menu-item > a {
    font-family: var(--font-heading);
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    padding: 0.65rem 0.85rem;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: color var(--transition-snappy), background-color var(--transition-snappy);
    position: relative;
    text-decoration: none;
}

.nav-menu > .menu-item > a:hover,
.nav-menu > .menu-item > a:focus,
.nav-menu > .menu-item.is-active > a {
    color: var(--color-text-primary);
    background-color: var(--color-surface-base);
}

.nav-menu > .menu-item > a::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0.85rem;
    right: 0.85rem;
    height: 2px;
    background-color: var(--color-brand-red);
    transform: scaleX(0);
    transition: transform var(--transition-smooth);
}

.nav-menu > .menu-item > a:hover::after,
.nav-menu > .menu-item > a:focus::after,
.nav-menu > .menu-item.is-active > a::after {
    transform: scaleX(1);
}

.dropdown-chevron {
    transition: transform var(--transition-smooth);
    color: var(--color-text-muted);
}

.menu-item-has-children:hover .dropdown-chevron,
.menu-item-has-children.is-expanded .dropdown-chevron {
    transform: rotate(180deg);
    color: var(--color-brand-red);
}

/* Submenu Dropdown Box */
.sub-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 320px;
    background-color: var(--color-surface-base);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    box-shadow: var(--shadow-elevated), 0 0 25px rgba(230, 25, 25, 0.08);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    pointer-events: none;
    transition: opacity var(--transition-smooth), transform var(--transition-smooth), visibility var(--transition-smooth);
    z-index: var(--z-dropdown);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.menu-item-has-children:hover > .sub-menu,
.menu-item-has-children:focus-within > .sub-menu,
.menu-item-has-children.is-expanded > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.sub-menu li a {
    display: flex;
    flex-direction: column;
    padding: 0.65rem 0.85rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: background-color var(--transition-snappy), border-left-color var(--transition-snappy);
    border-left: 2px solid transparent;
}

.sub-menu li a strong {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-text-primary);
    transition: color var(--transition-snappy);
}

.sub-menu li a .sub-desc {
    font-size: 0.775rem;
    color: var(--color-text-muted);
    margin-top: 0.15rem;
    line-height: 1.35;
}

.sub-menu li a:hover,
.sub-menu li a:focus {
    background-color: var(--color-surface-card);
    border-left-color: var(--color-brand-red);
}

.sub-menu li a:hover strong,
.sub-menu li a:focus strong {
    color: var(--color-brand-red);
}

.sub-menu-all {
    margin-top: 0.35rem;
    padding-top: 0.35rem;
    border-top: 1px solid var(--color-border);
}

.sub-menu-all-link {
    font-family: var(--font-heading);
    font-size: 0.825rem !important;
    font-weight: 700;
    color: var(--color-brand-red) !important;
}

/* ==========================================================================
   Header Actions & Mobile Hamburger
   ========================================================================== */

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.header-cta-btn {
    padding: 0.65rem 1.4rem;
    font-size: 0.875rem;
}

.header-cta-btn .cta-arrow {
    transition: transform var(--transition-snappy);
}

.header-cta-btn:hover .cta-arrow {
    transform: translateX(3px);
}

/* Hamburger Toggle Button */
.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 0;
    transition: border-color var(--transition-snappy), background-color var(--transition-snappy);
}

.nav-toggle:hover,
.nav-toggle:focus {
    border-color: var(--color-brand-red);
    background-color: var(--color-brand-red-subtle);
}

.hamburger-box {
    width: 20px;
    height: 14px;
    position: relative;
    display: inline-block;
}

.hamburger-inner,
.hamburger-inner::before,
.hamburger-inner::after {
    width: 20px;
    height: 2px;
    background-color: var(--color-text-primary);
    border-radius: 2px;
    position: absolute;
    transition: transform var(--transition-smooth), top var(--transition-smooth), opacity var(--transition-smooth);
}

.hamburger-inner {
    top: 6px;
}

.hamburger-inner::before {
    content: '';
    top: -6px;
    left: 0;
}

.hamburger-inner::after {
    content: '';
    top: 6px;
    left: 0;
}

/* ==========================================================================
   Mobile Navigation Drawer & Accordion
   ========================================================================== */

.mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.78);
    backdrop-filter: blur(10px);
    z-index: var(--z-drawer);
    display: none;
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.mobile-drawer.is-open {
    display: block;
    opacity: 1;
}

body.nav-open {
    overflow: hidden;
}

.mobile-drawer-inner {
    position: absolute;
    top: 0;
    right: 0;
    width: 88%;
    max-width: 400px;
    height: 100%;
    background-color: var(--color-surface-base);
    border-left: 1px solid var(--color-border);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transform: translateX(100%);
    transition: transform var(--transition-expressive);
    overflow-y: auto;
}

.mobile-drawer.is-open .mobile-drawer-inner {
    transform: translateX(0);
}

.mobile-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-md);
}

.mobile-brand-link {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    text-decoration: none;
}

.mobile-logo {
    border-radius: var(--radius-xs);
}

.mobile-brand-name {
    font-family: var(--font-brand-serif);
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--color-brand-white);
    display: block;
}

.mobile-brand-tagline {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-brand-red);
}

.mobile-close-btn {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.75rem;
    cursor: pointer;
    line-height: 1;
    padding: 0.25rem;
}

.mobile-close-btn:hover {
    color: var(--color-brand-red);
}

/* Mobile Accordion Menu */
.mobile-menu-list {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.mobile-item {
    border-bottom: 1px solid var(--color-border-subtle);
}

.mobile-link-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.mobile-link {
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text-primary);
    padding: 0.75rem 0;
    text-decoration: none;
    flex-grow: 1;
}

.mobile-link:hover {
    color: var(--color-brand-red);
}

.mobile-sub-toggle {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.1rem;
    transition: transform var(--transition-smooth), color var(--transition-snappy);
}

.mobile-sub-toggle[aria-expanded="true"] {
    transform: rotate(180deg);
    color: var(--color-brand-red);
}

.mobile-submenu {
    padding-left: var(--space-md);
    padding-bottom: var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-submenu[hidden] {
    display: none;
}

.mobile-submenu a {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    padding: 0.35rem 0;
    display: block;
}

.mobile-submenu a:hover {
    color: var(--color-brand-red);
}

.mobile-all-link {
    color: var(--color-brand-red) !important;
    font-weight: 600;
}

.mobile-drawer-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-lg);
}

/* ==========================================================================
   Responsive Breakpoint Rules (Mobile-First Polish across 320px–1440px+)
   ========================================================================== */

/* 1. Ultra-wide screens (1440px+) */
@media (min-width: 1440px) {
    .container {
        padding-left: var(--space-xl);
        padding-right: var(--space-xl);
    }
}

/* 2. Desktop to Tablet Landscape Transition (1080px–1280px) */
@media (max-width: 1080px) {
    .main-navigation {
        display: none;
    }
    .nav-toggle {
        display: inline-flex;
    }
}

/* 3. Tablet Portrait & Large Mobile (768px) */
@media (max-width: 768px) {
    .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-xl);
    }
    .footer-brand {
        grid-column: 1 / -1;
    }
}

/* 4. Phablets & Mobile Landscape (640px) */
@media (max-width: 640px) {
    .site-header {
        height: 72px;
    }
    .site-logo {
        height: 42px;
        width: 42px;
    }
    .header-cta-btn {
        padding: 0.5rem 0.85rem;
        font-size: 0.8rem;
    }
    .footer-top {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    .hero-locations {
        gap: 0.4rem;
    }
}

/* 5. Standard Modern Smartphone (390px–414px: iPhone 12/13/14/15, Pixel, Galaxy) */
@media (max-width: 420px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    .brand-name {
        font-size: 0.95rem;
    }
    .header-cta-btn {
        padding: 0.45rem 0.75rem;
        font-size: 0.75rem;
    }
    .header-container {
        gap: var(--space-xs);
    }
}

/* 6. Compact Mobile (320px–375px: iPhone SE, older Androids) */
@media (max-width: 360px) {
    .container {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
    .site-logo {
        height: 38px;
        width: 38px;
    }
    .brand-name {
        font-size: 0.85rem;
    }
    .header-cta-btn {
        display: none; /* In ultra-narrow 320px, keep hamburger prominent and clean */
    }
    .card {
        padding: var(--space-md) !important;
    }
    .modal-dialog {
        padding: var(--space-lg) !important;
    }
}


/* ==========================================================================
   Core Web Vitals & Rendering Optimization
   Deep below-the-fold sections skip off-screen rendering until near viewport.
   ========================================================================== */
#portfolio,
#testimonials,
#locations,
#insights,
#faq,
#contact {
    content-visibility: auto;
    contain-intrinsic-size: auto 600px;
}