/* =========================================
   HSN Tech - Header Styles
   ========================================= */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: transparent;
    transition: all var(--transition-normal);
    padding: var(--spacing-md) 0;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-sm) 0;
}

.header.scrolled .nav-link {
    color: var(--gray-800);
}

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

.header.scrolled .logo-text {
    color: var(--gray-900);
}

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: var(--font-bold);
    font-size: var(--text-xl);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--white);
    transition: color var(--transition-normal);
}

.logo-text span {
    color: var(--secondary-color);
}

.logo-img {
    height: 45px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
    transition: filter var(--transition-normal);
}

/* Logo color when header is scrolled - primary blue */
.header.scrolled .logo-img {
    filter: brightness(0) saturate(100%) invert(29%) sepia(96%) saturate(1640%) hue-rotate(196deg) brightness(96%) contrast(101%);
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-item {
    position: relative;
}

.nav-link {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-md);
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.nav-link i {
    font-size: var(--text-xs);
    transition: transform var(--transition-fast);
}

.nav-item:hover .nav-link i {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-sm) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
}

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

.dropdown-item {
    display: block;
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--gray-700);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--gray-50);
    color: var(--primary-color);
    padding-left: var(--spacing-xl);
}

/* Header CTA */
.header-cta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Mobile Menu Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.mobile-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--white);
    transition: all var(--transition-fast);
}

.header.scrolled .mobile-toggle span {
    background: var(--gray-800);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
@media (max-width: 992px) {
    .mobile-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-lg);
        gap: 0;
        box-shadow: var(--shadow-xl);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

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

    .nav-item {
        border-bottom: 1px solid var(--gray-200);
    }

    .nav-item:last-child {
        border-bottom: none;
    }

    .nav-link {
        color: var(--gray-800);
        padding: var(--spacing-md);
        justify-content: space-between;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
        padding-left: var(--spacing-lg);
    }

    .nav-item.active .dropdown-menu {
        display: block;
    }

    .header-cta {
        display: none;
    }

    .header-cta.mobile {
        display: flex;
        flex-direction: column;
        padding: var(--spacing-lg);
    }
}