/* ========================================
   header.css - Header Styles
   Alliance Global - Export Business
   ======================================== */

:root {
    --primary: #072962;
    --primary-light: #143a75;
    --primary-dark: #0a1e41;
    --accent: #b79348;
    --accent-light: #d4b96a;
    --secondary: #f6eed7;
}

/* Header Container */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 40px;
    background: #ffffff;
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

/* ---- Logo ---- */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-img {
    width: auto;
    height: 46px;
    display: block;
    transition: transform 0.3s ease;
}

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

/* ---- Nav Links ---- */
.nav {
    display: flex;
    gap: 5px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    font-weight: 500;
    padding: 8px 20px;
    position: relative;
    transition: all 0.3s ease;
}

/* Underline Animation */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 2px;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

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

.nav-link:hover::after {
    width: 60%;
}

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

.nav-link.active::after {
    width: 60%;
}

/* ---- Right Buttons ---- */
.header-btns {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* WhatsApp Button */
.whatsapp-btn {
    width: 42px;
    height: 42px;
    background: #25d366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.35);
}

.whatsapp-btn:hover {
    transform: scale(1.15);
    box-shadow: 0 6px 18px rgba(37, 211, 102, 0.5);
}

/* Get Quote Button */
.enquiry-btn {
    text-decoration: none;
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(7, 41, 98, 0.35);
}

.enquiry-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(7, 41, 98, 0.5);
}

/* ========================================
   MEGA MENU - IMPROVED STYLE
   ======================================== */

/* Dropdown Container */
.nav-dropdown {
    position: relative;
}

/* Dropdown Arrow */
.dropdown-arrow {
    font-size: 10px;
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.nav-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

/* Mega Menu Panel */
.mega-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border-light);
    padding: 10px 0;
    min-width: 420px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 1000;
}

/* 2 Column Grid */
.mega-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px 0;
}

/* Show Mega Menu on Hover */
.nav-dropdown:hover .mega-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
    transform: translateX(-50%) translateY(0);
}

/* Invisible bridge */
.nav-dropdown::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 15px;
    background: transparent;
}

/* Mega Link */
.mega-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 18px;
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    color: var(--text-dark);
    text-decoration: none;
    transition: all 0.25s ease;
    opacity: 0;
    transform: translateY(8px);
    position: relative;
}

/* Left border accent */
.mega-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: linear-gradient(180deg, var(--primary), var(--accent));
    border-radius: 0 2px 2px 0;
    transition: height 0.25s ease;
}

.mega-link:hover::before {
    height: 60%;
}

/* Staggered Animation */
.nav-dropdown:hover .mega-link {
    opacity: 1;
    transform: translateY(0);
}

/* Row 1 */
.nav-dropdown:hover .mega-grid .mega-link:nth-child(1) { transition-delay: 0.03s; }
.nav-dropdown:hover .mega-grid .mega-link:nth-child(2) { transition-delay: 0.06s; }
/* Row 2 */
.nav-dropdown:hover .mega-grid .mega-link:nth-child(3) { transition-delay: 0.09s; }
.nav-dropdown:hover .mega-grid .mega-link:nth-child(4) { transition-delay: 0.12s; }
/* Row 3 */
.nav-dropdown:hover .mega-grid .mega-link:nth-child(5) { transition-delay: 0.15s; }
.nav-dropdown:hover .mega-grid .mega-link:nth-child(6) { transition-delay: 0.18s; }
/* View All */
.nav-dropdown:hover .mega-view-all { transition-delay: 0.21s; }

/* Hover State */
.mega-link:hover {
    background: var(--bg-light);
    color: var(--primary);
    padding-left: 22px;
}

/* Arrow Icon */
.mega-arrow {
    font-size: 10px;
    color: var(--text-light);
    transition: all 0.25s ease;
    min-width: 12px;
}

.mega-link:hover .mega-arrow {
    color: var(--accent);
    transform: translateX(3px);
}

/* Divider */
.mega-divider {
    height: 1px;
    background: var(--border-light);
    margin: 8px 0;
}

/* More-categories hint */
.mega-more {
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    color: var(--text-light);
    padding: 4px 18px 0;
    letter-spacing: 0.3px;
}

/* View All */
.mega-link.mega-view-all {
    font-weight: 600;
    color: var(--primary);
}

.mega-link.mega-view-all:hover {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
}

.mega-link.mega-view-all:hover .mega-arrow {
    color: white;
}

.mega-link.mega-view-all:hover::before {
    background: white;
}

/* ========================================
   RESPONSIVE (Mobile)
   ======================================== */
@media (max-width: 992px) {
    .header {
        padding: 12px 20px;
    }

    .nav {
        display: none;
    }

    .mega-menu {
        display: none;
    }

    .logo-img {
        height: 38px;
    }
}