/* Header Styles */
.site-header {
    background: var(--header-bg, #ffffff);
    box-shadow: var(--header-shadow, 0 2px 8px rgba(0, 0, 0, 0.1));
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--header-padding, 20px 0);
}

.header-container {
    max-width: var(--container-width, 1400px);
    margin: 0 auto;
    padding: 0 var(--spacing-lg, 24px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg, 24px);
}

.logo-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md, 16px);
    text-decoration: none;
    color: var(--text-primary, #2c3e50);
    transition: opacity var(--transition-base, 0.3s ease);
}

.logo-link:hover {
    opacity: 0.8;
}

.logo-img {
    width: 48px;
    height: 48px;
    display: block;
}

.logo-text {
    font-size: var(--font-size-xl, 22px);
    font-weight: 700;
    color: var(--text-primary, #2c3e50);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl, 32px);
    flex: 1;
    justify-content: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary, #7f8c8d);
    font-weight: 500;
    font-size: var(--font-size-base, 16px);
    transition: color var(--transition-base, 0.3s ease);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color, #d35839);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color, #d35839);
}

.header-phone {
    font-size: var(--font-size-lg, 18px);
    font-weight: 700;
    color: var(--primary-color, #d35839);
    text-decoration: none;
    transition: opacity var(--transition-base, 0.3s ease);
    white-space: nowrap;
}

.header-phone:hover {
    opacity: 0.8;
}

.burger-menu {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
}

.burger-menu span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary, #2c3e50);
    transition: all var(--transition-base, 0.3s ease);
}
/* Анимация при открытии меню */
.burger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.burger-menu.active span:nth-child(2) {
    opacity: 0;
}

.burger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile styles */
@media (max-width: 768px) {
    .site-header {
        padding: var(--spacing-md, 16px) 0;
    }

    .burger-menu {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-white, #ffffff);
        flex-direction: column;
        padding: var(--spacing-lg, 24px);
        box-shadow: var(--shadow-md, 0 4px 12px rgba(0, 0, 0, 0.15));
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base, 0.3s ease);
        gap: var(--spacing-md, 16px);
    }

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

    .header-phone {
        display: none;
    }

    .logo-text {
        font-size: var(--font-size-lg, 18px);
    }

    .logo-img {
        width: 40px;
        height: 40px;
    }
}