/* 
 * Header Component Styles
 * Atelier Flint & Associates Architects Website
 * 
 * Styles for the main header, navigation, and contact bar components
 * using BEM methodology and mobile-first responsive design.
 */

/* ==========================================================================
   CONTACT BAR COMPONENT
   ========================================================================== */

.contact-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: var(--spacing-sm) 0;
    z-index: var(--z-index-fixed);
    transform: translateY(0);
    transition: transform var(--transition-normal);
    font-size: var(--font-size-sm);
}

.contact-bar--hidden {
    transform: translateY(-100%);
}

.contact-bar__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--container-xxl);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.contact-bar__info {
    display: flex;
    gap: var(--spacing-lg);
}

.contact-bar__item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-light);
}

.contact-bar__item i {
    color: var(--color-secondary);
}

.contact-bar__social {
    display: flex;
    gap: var(--spacing-md);
}

.contact-bar__social-link {
    color: var(--color-text-light);
    font-size: var(--font-size-base);
    transition: color var(--transition-fast);
}

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

/* Mobile responsive */
@media (max-width: 767px) {
    .contact-bar__info {
        gap: var(--spacing-md);
    }
    
    .contact-bar__item:nth-child(n+2) {
        display: none;
    }
    
    .contact-bar__social {
        gap: var(--spacing-sm);
    }
}

/* ==========================================================================
   MAIN HEADER COMPONENT
   ========================================================================== */

.main-header {
    position: fixed;
    top: var(--header-contact-bar-height);
    left: 0;
    width: 100%;
    background-color: var(--color-background);
    box-shadow: var(--shadow-md);
    z-index: var(--z-index-sticky);
    transition: all var(--transition-normal);
}

.main-header--scrolled {
    top: 0;
    box-shadow: var(--shadow-lg);
}

.main-header__nav {
    max-width: var(--container-xxl);
    margin: 0 auto;
    padding: var(--spacing-md);
}

.main-header__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ==========================================================================
   LOGO COMPONENT
   ========================================================================== */

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo__image {
    height: 3rem;
    width: auto;
    transition: transform var(--transition-fast);
}

.logo:hover .logo__image {
    transform: scale(1.05);
}

.logo__text {
    margin-left: var(--spacing-md);
}

.logo__company-name {
    font-size: var(--font-size-xl);
    font-family: var(--font-family-heading);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    line-height: var(--line-height-tight);
    margin: 0;
}

.logo__company-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

@media (max-width: 767px) {
    .logo__text {
        display: none;
    }
}

/* ==========================================================================
   NAVIGATION COMPONENT
   ========================================================================== */

.main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
}

.main-nav__list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--spacing-2xl);
}

.main-nav__item {
    margin: 0;
}

.main-nav__link {
    position: relative;
    color: var(--color-primary);
    font-family: var(--font-family-body);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    transition: color var(--transition-fast);
}

.main-nav__link:hover {
    color: var(--color-secondary);
}

.main-nav__link--active {
    color: var(--color-secondary);
}

.main-nav__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transform: translateX(-50%);
    transition: width var(--transition-fast);
}

.main-nav__link:hover::after,
.main-nav__link--active::after {
    width: 100%;
}

/* CTA Button in Navigation */
.main-nav__cta {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: var(--button-padding-md);
    border-radius: var(--border-radius-md);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.main-nav__cta:hover {
    background-color: var(--color-secondary);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Hide desktop navigation on mobile */
@media (max-width: 991px) {
    .main-nav {
        display: none;
    }
}

/* ==========================================================================
   MOBILE MENU COMPONENT
   ========================================================================== */

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-primary);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    padding: var(--spacing-sm);
}

.mobile-menu-toggle:focus {
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

.mobile-menu {
    display: none;
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
}

.mobile-menu--open {
    display: block;
}

.mobile-menu__list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-menu__item {
    margin-bottom: var(--spacing-sm);
}

.mobile-menu__link {
    display: block;
    padding: var(--spacing-md);
    color: var(--color-primary);
    font-family: var(--font-family-body);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: all var(--transition-fast);
    border-radius: var(--border-radius-md);
}

.mobile-menu__link:hover {
    color: var(--color-secondary);
    background-color: var(--color-quaternary);
}

.mobile-menu__link--active {
    color: var(--color-secondary);
    background-color: var(--color-quaternary);
}

.mobile-menu__cta {
    display: block;
    width: 100%;
    text-align: center;
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    margin-top: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.mobile-menu__cta:hover {
    background-color: var(--color-secondary);
    color: var(--color-primary);
}

/* Show mobile menu toggle on mobile */
@media (max-width: 991px) {
    .mobile-menu-toggle {
        display: block;
    }
}

/* ==========================================================================
   HEADER ANIMATIONS
   ========================================================================== */

.header-fade-in {
    animation: headerFadeIn var(--animation-duration-slow) ease-out;
}

@keyframes headerFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   ACCESSIBILITY ENHANCEMENTS
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .main-header,
    .contact-bar,
    .main-nav__link,
    .mobile-menu__link,
    .logo__image {
        transition: none;
    }
    
    .header-fade-in {
        animation: none;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .main-header {
        border-bottom: 2px solid var(--color-primary);
    }
    
    .main-nav__link::after {
        height: 3px;
    }
}