/* Modern Professional Header & Navigation */

/* Header Container */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: var(--z-fixed);
    transition: all var(--transition-normal);
}

.header__container {
    max-width: 80%;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100px;
    position: relative;
}

/* Logo Section */
.header__logo {
    flex-shrink: 0;
    z-index: 10;
    display: flex;
    align-items: center;
}

.header__logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.header__logo-link:hover::before {
    left: 0;
}

.header__logo-image {
    height: 120px;
    width: auto;
    max-width: 480px;
    object-fit: contain;
    object-position: left center;
    transition: all var(--transition-fast);
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.1));
}

.header__logo-link:hover .header__logo-image {
    transform: scale(1.02);
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
}

/* Navigation */
.nav {
    position: relative;
    z-index: 5;
    flex: 1;
    display: flex;
    justify-content: flex-end;
    margin-left: var(--spacing-xl);
}

.nav__backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 1;
}

.nav__container {
    position: relative;
    z-index: 2;
}

.nav__list {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--spacing-sm);
}

.nav__item {
    position: relative;
}

.nav__link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-sm);
    text-decoration: none;
    color: var(--gray-700);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    position: relative;
    white-space: nowrap;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

.nav__link:hover::after,
.nav__link--active::after {
    width: 80%;
}

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

.nav__link-icon {
    font-size: var(--font-size-lg);
    width: 20px;
    text-align: center;
    transition: transform var(--transition-fast);
}

.nav__link:hover .nav__link-icon {
    transform: scale(1.1);
}

.nav__link-text {
    font-weight: var(--font-weight-semibold);
}

.nav__link-arrow {
    font-size: var(--font-size-sm);
    transition: transform var(--transition-fast);
    margin-left: var(--spacing-xs);
}

.nav__item--mega:hover .nav__link-arrow {
    transform: rotate(180deg);
}

.nav__link-indicator {
    display: none;
}

/* Dropdown Menu */
.nav__dropdown {
    position: absolute;
    top: calc(100% + 15px);
    left: 0;
    min-width: 220px;
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--gray-200);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: var(--z-dropdown);
    list-style: none;
    margin: 0;
    padding: var(--spacing-sm) 0;
}

.nav__dropdown::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 20px;
    width: 12px;
    height: 12px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-bottom: none;
    border-right: none;
    transform: rotate(45deg);
}

.nav__item--dropdown:hover .nav__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav__dropdown-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--gray-700);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.nav__dropdown-link:hover {
    background-color: var(--gray-50);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
    padding-left: calc(var(--spacing-lg) + var(--spacing-xs));
}

.nav__mega-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
}

.nav__mega-section {
    display: flex;
    flex-direction: column;
}

.nav__mega-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--gray-800);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--gray-200);
}

.nav__mega-title i {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
}

.nav__mega-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.nav__mega-link {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--gray-600);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-fast);
    position: relative;
}

.nav__mega-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: var(--primary-color);
    border-radius: var(--border-radius-full);
    transform: scaleY(0);
    transition: transform var(--transition-fast);
}

.nav__mega-link:hover::before {
    transform: scaleY(1);
}

.nav__mega-link:hover {
    background: rgba(44, 90, 160, 0.05);
    color: var(--primary-color);
    padding-left: var(--spacing-lg);
}

.nav__mega-featured {
    display: flex;
    flex-direction: column;
}

.nav__mega-card {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(243, 156, 18, 0.3);
    transition: all var(--transition-fast);
}

.nav__mega-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(243, 156, 18, 0.4);
}

.nav__mega-card-image {
    height: 80px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.1) 100%);
    position: relative;
}

.nav__mega-card-image::after {
    content: '🏖️';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--font-size-3xl);
}

.nav__mega-card-content {
    padding: var(--spacing-lg);
    color: var(--white);
}

.nav__mega-card-content h5 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    margin: 0 0 var(--spacing-xs) 0;
}

.nav__mega-card-content p {
    font-size: var(--font-size-sm);
    margin: 0 0 var(--spacing-md) 0;
    opacity: 0.9;
}

.nav__mega-card-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-fast);
}

.nav__mega-card-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateX(5px);
}

/* Header Actions */
.header__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    z-index: 10;
}

/* Header Contact */
.header__contact {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--spacing-sm);
}

.header__contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--border-radius-xl);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-fast);
    box-shadow: 0 4px 15px rgba(44, 90, 160, 0.3);
    position: relative;
    overflow: hidden;
}

.header__contact-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    transition: left var(--transition-normal);
}

.header__contact-item:hover::before {
    left: 0;
}

.header__contact-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(44, 90, 160, 0.4);
}

.header__contact-item i {
    font-size: var(--font-size-base);
    position: relative;
    z-index: 2;
}

.header__contact-item span {
    position: relative;
    z-index: 2;
    white-space: nowrap;
}

.header__contact-item:nth-child(2) {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
    box-shadow: 0 4px 15px rgba(243, 156, 18, 0.3);
}

.header__contact-item:nth-child(2)::before {
    background: linear-gradient(135deg, var(--secondary-light) 0%, var(--secondary-color) 100%);
}

.header__contact-item:nth-child(2):hover {
    box-shadow: 0 8px 25px rgba(243, 156, 18, 0.4);
}

/* Search */
.header__search {
    position: relative;
}

.header__search-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    color: var(--gray-600);
    border: none;
    border-radius: var(--border-radius-xl);
    font-size: var(--font-size-xl);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.header__search-toggle:hover {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(44, 90, 160, 0.3);
}

.header__search-form {
    position: absolute;
    top: calc(100% + 15px);
    right: 0;
    width: 350px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: var(--spacing-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: var(--z-dropdown);
}

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

.header__search-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius-xl);
    font-size: var(--font-size-base);
    background: var(--white);
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-md);
}

.header__search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.1);
}

.header__search-submit {
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius-xl);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.header__search-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(44, 90, 160, 0.3);
}

/* User Menu */
.header__user {
    position: relative;
}

.header__user-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    border: none;
    border-radius: var(--border-radius-xl);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.header__user-toggle:hover {
    background: linear-gradient(135deg, var(--gray-200) 0%, var(--gray-300) 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.header__user-avatar {
    width: 35px;
    height: 35px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: var(--font-size-base);
}

.header__user-text {
    font-weight: var(--font-weight-semibold);
    color: var(--gray-700);
    font-size: var(--font-size-sm);
}

.header__user-toggle i:last-child {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
    transition: transform var(--transition-fast);
}

.header__user:hover .header__user-toggle i:last-child {
    transform: rotate(180deg);
}

.header__user-menu {
    position: absolute;
    top: calc(100% + 15px);
    right: 0;
    width: 220px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: var(--spacing-lg) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: var(--z-dropdown);
}

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

.header__user-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--gray-700);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
}

.header__user-link:hover {
    background: rgba(44, 90, 160, 0.05);
    color: var(--primary-color);
    padding-left: var(--spacing-xl);
}

.header__user-link i {
    width: 16px;
    text-align: center;
    color: var(--gray-500);
}

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

/* CTA Button */
.header__cta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-light) 100%);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--border-radius-xl);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-base);
    box-shadow: 0 8px 25px rgba(243, 156, 18, 0.3);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.header__cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--secondary-light) 0%, var(--secondary-color) 100%);
    transition: left var(--transition-normal);
}

.header__cta:hover::before {
    left: 0;
}

.header__cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(243, 156, 18, 0.4);
}

.header__cta span,
.header__cta i {
    position: relative;
    z-index: 2;
}

/* Mobile Menu Toggle */
.header__menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    border: none;
    border-radius: var(--border-radius-xl);
    cursor: pointer;
    gap: 4px;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.header__menu-toggle:hover {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(44, 90, 160, 0.3);
}

.header__menu-line {
    width: 24px;
    height: 3px;
    background-color: var(--gray-700);
    border-radius: var(--border-radius-full);
    transition: all var(--transition-normal);
    transform-origin: center;
}

.header__menu-toggle:hover .header__menu-line {
    background-color: var(--white);
}

.header__menu-toggle--active .header__menu-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.header__menu-toggle--active .header__menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Scroll Effect */
.header--scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.header--scrolled .header__container {
    height: 80px;
}

/* Mobile Responsive */
@media (max-width: 1200px) {
    .header__container {
        padding: 0 var(--spacing-lg);
    }
    
    .nav__mega-menu {
        width: 500px;
    }
    
    .nav__mega-container {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
    }
    
    .nav__mega-featured {
        grid-column: 1 / 3;
        margin-top: var(--spacing-lg);
    }
}

@media (max-width: 992px) {
    .header__container {
        height: 80px;
        padding: 0 var(--spacing-md);
    }
    
    .header__logo-image {
        height: 60px;
        max-width: 240px;
    }
    
    .nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 280px;
        height: 100vh;
        background: var(--white);
        transform: translateX(-100%);
        transition: transform var(--transition-normal) ease-out;
        z-index: 99999;
        overflow-y: auto;
        margin-left: 0;
        box-shadow: 0 0 50px rgba(0, 0, 0, 0.1);
        display: block;
    }
    
    .nav--active {
        transform: translateX(0);
    }
    
    .nav__container {
        height: 100%;
        display: flex;
        flex-direction: column;
    }
    
    .nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        justify-content: flex-start;
        flex: 1;
        margin: 0;
        list-style: none;
    }
    
    .nav__item {
        border-bottom: 1px solid var(--gray-100);
    }
    
    .nav__link {
        display: flex;
        align-items: center;
        padding: var(--spacing-lg) var(--spacing-xl);
        color: var(--gray-700);
        text-decoration: none;
        font-size: var(--font-size-base);
        font-weight: var(--font-weight-medium);
        transition: all var(--transition-fast);
        position: relative;
    }
    
    .nav__link::after {
        display: none;
    }
    
    .nav__link:hover,
    .nav__link--active {
        background-color: var(--gray-50);
        color: var(--primary-color);
        padding-left: calc(var(--spacing-xl) + var(--spacing-md));
    }
    
    .nav__link::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        width: 4px;
        height: 100%;
        background: var(--primary-color);
        transform: scaleY(0);
        transition: transform var(--transition-fast);
    }
    
    .nav__link:hover::before,
    .nav__link--active::before {
        transform: scaleY(1);
    }
    
    .nav__link-icon {
        width: 20px;
        margin-right: var(--spacing-md);
        font-size: var(--font-size-lg);
        color: var(--gray-500);
        transition: color var(--transition-fast);
    }
    
    .nav__link:hover .nav__link-icon,
    .nav__link--active .nav__link-icon {
        color: var(--primary-color);
    }
    
    .nav__link-text {
        flex: 1;
    }
    
    .nav__link-arrow {
        font-size: var(--font-size-sm);
        color: var(--gray-400);
        transition: transform var(--transition-fast);
    }
    
    .nav__item--open .nav__link-arrow {
        transform: rotate(180deg);
        color: var(--primary-color);
    }
    
    .nav__dropdown {
        position: static;
        width: 100%;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: var(--gray-50);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-normal);
        box-shadow: none;
        border-radius: 0;
        border: none;
        padding: 0;
        margin: 0;
        list-style: none;
    }
    
    .nav__dropdown::before {
        display: none;
    }
    
    .nav__item--dropdown.nav__item--open .nav__dropdown {
        max-height: 500px;
    }
    
    .nav__dropdown-link {
        display: block;
        padding: var(--spacing-md) var(--spacing-xl) var(--spacing-md) calc(var(--spacing-xl) + var(--spacing-lg));
        color: var(--gray-600);
        text-decoration: none;
        font-size: var(--font-size-sm);
        transition: all var(--transition-fast);
        position: relative;
        border-bottom: 1px solid var(--gray-100);
        border-left: none;
    }
    
    .nav__dropdown-link:last-child {
        border-bottom: none;
    }
    
    .nav__dropdown-link::before {
        content: '';
        position: absolute;
        left: var(--spacing-xl);
        top: 50%;
        transform: translateY(-50%);
        width: 6px;
        height: 6px;
        background: var(--gray-300);
        border-radius: var(--border-radius-full);
        transition: all var(--transition-fast);
    }
    
    .nav__dropdown-link:hover {
        background-color: var(--white);
        color: var(--primary-color);
        padding-left: calc(var(--spacing-xl) + var(--spacing-xl));
    }
    
    .nav__dropdown-link:hover::before {
        background: var(--primary-color);
        transform: translateY(-50%) scale(1.5);
    }
    
    .header__actions {
        gap: var(--spacing-md);
    }
    
    .header__contact {
        display: none;
    }
    
    .header__menu-toggle {
        display: flex;
    }
}

@media (max-width: 768px) {
    .header__container {
        height: 70px;
        padding: 0 var(--spacing-sm);
    }
    
    .header__logo {
        margin-left: -58px;
    }
    
    .header__logo-image {
        height: 65px;
        max-width: 250px;
    }
    
    .nav {
        top: 70px;
        height: calc(100vh - 70px);
    }
    
    .header__actions {
        gap: var(--spacing-sm);
    }
    
    .header__search-toggle,
    .header__menu-toggle {
        width: 45px;
        height: 45px;
        font-size: var(--font-size-lg);
    }
    
    .header__user-toggle {
        padding: var(--spacing-xs) var(--spacing-md);
    }
    
    .header__user-avatar {
        width: 30px;
        height: 30px;
        font-size: var(--font-size-sm);
    }
    
    .header__user-text {
        display: none;
    }
}

@media (max-width: 480px) {
    .header__container {
        height: 60px;
    }
    
    .header__logo-image {
        height: 80px;
        max-width: 160px;
    }
    
    .nav {
        top: 0px;
        height: calc(100vh - 60px);
    }
    
    .header__search-toggle,
    .header__menu-toggle {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-base);
    }
    
    .header__user-avatar {
        width: 28px;
        height: 28px;
        font-size: var(--font-size-xs);
    }
}

/* Navigation Overlay */
.nav__overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: var(--z-modal-backdrop);
}

.nav__overlay--active {
    opacity: 1;
    visibility: visible;
}

/* Performance Optimizations */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}