/* ========================================
   2025 DESIGN SYSTEM & NAVIGATION
   ======================================== */

:root {
    /* Sophisticated 2025 Palette */
    --primary-navy: #1a1f36;
    --primary-charcoal: #2d2d2d;
    --accent-copper: #c9a962;
    --accent-terracotta: #d4845f;
    --bg-warm-white: #faf9f7;
    --text-rich-black: #1a1a1a;
    --highlight-sage: #7d8c75;
    
    /* Mapping to Legacy Variables for Backward Compatibility */
    --ink-black: var(--primary-charcoal);
    --plaster-white: var(--bg-warm-white);
    --industrial-orange: var(--accent-copper);
    --industrial-orange-hover: var(--accent-terracotta);
    
    --concrete-light: #f0f0f0;
    --concrete-mid: #d1d1d1;
    --concrete-dark: #666666;

    --border-color: rgba(255,255,255,0.1);
    --border-thick: 1px solid var(--border-color);
    --border-thin: 1px solid var(--border-color);
    
    --font-primary: 'Inter', sans-serif;
    --header-height: 80px;
}

/* Global Reset overrides for smoother look */
body {
    background-color: var(--bg-warm-white);
    color: var(--text-rich-black);
}

/* ========================================
   HEADER STYLES - DARK INVERTED THEME
   ======================================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--primary-charcoal);
    border-bottom: none;
    height: var(--header-height);
    transition: all 0.3s ease;
}

.header-inner {
    max-width: 1800px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

/* Logo - Light on Dark */
.logo-container {
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    z-index: 1002;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-mark {
    width: 12px;
    height: 12px;
    background: var(--accent-copper);
    transform: rotate(45deg);
}

/* Navigation - Light Text on Dark */
nav, .nav-desktop {
    display: flex;
    height: 100%;
    align-items: center;
}

.nav-link {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 1.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    position: relative;
    transition: color 0.2s ease;
    cursor: pointer;
}

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

.nav-link.dropdown-toggle::after {
    content: '';
    width: 6px;
    height: 6px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg);
    margin-left: 0.5rem;
    margin-top: -2px;
    transition: transform 0.2s ease;
}

.nav-link.dropdown-toggle:hover::after {
    transform: rotate(225deg);
    margin-top: 2px;
}

/* Dropdown Menus - Light Theme */
.dropdown-menu {
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: #ffffff;
    border-bottom: 1px solid rgba(0,0,0,0.08);
    padding: 3rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.dropdown-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Mega Menu Structure */
.mega-menu-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 4rem;
    padding: 0 3rem;
}

.mega-menu-sidebar {
    border-right: 2px solid rgba(0,0,0,0.1);
    padding-right: 2.5rem;
}

.mega-menu-title {
    font-size: 0.85rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--accent-copper);
    margin-bottom: 1.5rem;
    letter-spacing: 0.15em;
}

.mega-menu-link {
    display: block;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-charcoal);
    text-decoration: none;
    margin-bottom: 1.25rem;
    transition: color 0.2s, transform 0.2s;
    line-height: 1.3;
}

.mega-menu-link:hover {
    color: var(--accent-copper);
    transform: translateX(4px);
}

.mega-menu-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(200px, 1fr));
    gap: 2.5rem 3rem;
}

.menu-column {
    min-width: 220px;
}

.menu-column h4 {
    font-size: 0.85rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--primary-charcoal);
    margin-bottom: 1.5rem;
    letter-spacing: 0.12em;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--accent-copper);
}

.menu-item {
    display: inline-block;
    text-decoration: none;
    margin-bottom: 0.75rem;
    color: var(--primary-charcoal);
    font-size: 1.05rem;
    font-weight: 600;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0.6rem 1rem;
    white-space: nowrap;
    position: relative;
    border-radius: 6px;
    background: transparent;
}

.menu-item::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 3px;
    background: var(--accent-copper);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
}

.menu-item:hover {
    color: var(--accent-copper);
    background: rgba(201, 169, 98, 0.08);
    transform: translateX(4px);
}

.menu-item:hover::before {
    width: 100%;
}

/* Fly-out Submenu */
.flyout-trigger {
    position: relative;
}

.menu-item.has-flyout {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flyout-arrow {
    opacity: 0.5;
    transition: opacity 0.2s, transform 0.2s;
}

.flyout-trigger:hover .flyout-arrow {
    opacity: 1;
    transform: translateX(3px);
}

.flyout-menu {
    position: absolute;
    left: 100%;
    top: -1rem;
    min-width: 220px;
    background: #ffffff;
    border: 1px solid rgba(0,0,0,0.08);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-10px);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1001;
}

.flyout-trigger:hover .flyout-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(10px);
}

.flyout-menu h4 {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent-copper);
    margin-bottom: 1rem;
    letter-spacing: 0.1em;
    border-bottom: 1px solid rgba(0,0,0,0.08);
    padding-bottom: 0.75rem;
}

.flyout-menu .menu-item {
    margin-bottom: 0.75rem;
    font-size: 1.05rem;
    font-weight: 600;
}

.flyout-menu .menu-item.view-all {
    color: var(--accent-copper);
    font-weight: 600;
    margin-top: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(0,0,0,0.08);
}

/* Mobile Menu Toggle - Light Icon */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger {
    width: 24px;
    height: 2px;
    background: #ffffff;
    position: relative;
    transition: all 0.3s ease;
}

.hamburger::before, .hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: #ffffff;
    left: 0;
    transition: all 0.3s ease;
}

.hamburger::before { top: -8px; }
.hamburger::after { top: 8px; }

/* Mobile Menu Active State */
.mobile-toggle.active .hamburger { background: transparent; }
.mobile-toggle.active .hamburger::before { transform: rotate(45deg); top: 0; }
.mobile-toggle.active .hamburger::after { transform: rotate(-45deg); top: 0; }

/* HIDE MOBILE MENU ON DESKTOP */
.mobile-menu {
    display: none;
}

/* Responsive */
@media (max-width: 1024px) {
    .nav-desktop { display: none; }
    .mobile-toggle { display: block; }
    
    .mobile-menu {
        display: block;
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: var(--primary-charcoal);
        padding: 2rem;
        transform: translateX(100%);
        transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        overflow-y: auto;
        z-index: 999;
    }
    
    .mobile-menu.active {
        transform: translateX(0);
    }
    
    .mobile-link {
        display: block;
        font-size: 1.5rem;
        font-weight: 700;
        color: #ffffff;
        text-decoration: none;
        padding: 1rem 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .mobile-group {
        border-bottom: 1px solid rgba(255,255,255,0.1);
        padding: 1rem 0;
    }
    
    .mobile-sub-group {
        padding-left: 1rem;
        margin-top: 0.5rem;
    }
    
    .mobile-sub-link {
        display: block;
        padding: 0.5rem 0;
        color: rgba(255,255,255,0.7);
        text-decoration: none;
        font-size: 1rem;
    }
    
    .mobile-sub-link:hover {
        color: var(--accent-copper);
    }
}