/* ===== RESET AND BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f8f9fa;
    color: #333333;
    line-height: 1.6;
}

/* ===== TOP INFO BAR ===== */
#topInfoBar {
    background: linear-gradient(135deg, #2c3e50, #34495e);
    color: #ffffff;
    padding: 0.5rem 0;
    font-size: 0.9rem;
}

.topBarContainer {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#contactInfoSection {
    display: flex;
    gap: 2rem;
}

.contactInfoItem {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.contactIcon {
    font-size: 0.8rem;
    color: #3498db;
}

.contactText {
    font-weight: 500;
}

#socialMediaSection {
    display: flex;
    gap: 1rem;
}

.socialMediaLink {
    color: #ffffff;
    text-decoration: none;
    transition: all 0.3s ease;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
}

.socialMediaLink:hover {
    background: #3498db;
    transform: translateY(-2px);
}

.socialIcon {
    font-size: 0.9rem;
}

/* ===== HEADER STYLES ===== */
#advanceRefrigerationHeader {
    background: #ffffff;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

.headerMainContainer {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

/* ===== BRAND IDENTITY SECTION ===== */
#brandIdentitySection {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

#companyLogoContainer img {
    height: 60px;
    width: auto;
    /* Logo in original colors */
}

/* ===== PRIMARY NAVIGATION MENU ===== */
#primaryNavigationMenu {
    flex: 1;
    display: flex;
    justify-content: center;
}

#mainNavigationList {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    margin: 0;
    padding: 0;
}

.navigationListItem {
    position: relative;
}

.navigationLink {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 600;
    font-size: 1rem;
    padding: 1rem 0;
    transition: all 0.3s ease;
    position: relative;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.navigationLink:hover,
.navLinkActive {
    color: #3498db;
}

.navLinkActive::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: #3498db;
    border-radius: 2px 2px 0 0;
}

/* ===== DROPDOWN CONTENT ===== */
.dropdownContent {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    min-width: 800px;
    padding: 2rem;
    border: 1px solid #e9ecef;
    z-index: 1001;
}

.dropdownContainer:hover .dropdownContent {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdownGridLayout {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.serviceCategoryGroup h4,
.systemCategoryGroup h4 {
    color: #2c3e50;
    font-size: 1.1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #3498db;
    font-weight: 700;
}

.serviceItemsList,
.systemItemsList {
    list-style: none;
}

.serviceItemsList li,
.systemItemsList li {
    margin-bottom: 0.5rem;
}

.serviceItemLink,
.systemItemLink {
    text-decoration: none;
    color: #5a6c7d;
    font-weight: 500;
    transition: all 0.3s ease;
    display: block;
    padding: 0.3rem 0;
    font-size: 0.95rem;
    text-transform: none;
    letter-spacing: 0;
}

.serviceItemLink:hover,
.systemItemLink:hover {
    color: #3498db;
    transform: translateX(5px);
}

/* ===== HEADER ACTIONS CONTAINER ===== */
#headerActionsContainer {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-shrink: 0;
}

/* Quick Call Section */
#quickCallSection {
    display: flex;
    align-items: center;
}

.quickCallButton {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-decoration: none;
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.quickCallButton:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
    background: linear-gradient(135deg, #2980b9, #3498db);
}

.quickCallIcon {
    font-size: 1.1rem;
}

/* ===== MOBILE NAVIGATION TOGGLE ===== */
#mobileNavigationToggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 0.5rem;
}

.toggleLine {
    width: 25px;
    height: 3px;
    background: #2c3e50;
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* ===== MOBILE NAVIGATION PANEL ===== */
#mobileNavigationPanel {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    height: calc(100vh - 80px);
    background: #ffffff;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 999;
    overflow-y: auto;
}

#mobileNavigationPanel.mobileNavActive {
    transform: translateX(0);
}

.mobileNavContent {
    padding: 2rem;
}

.mobileNavList {
    list-style: none;
    margin-bottom: 2rem;
}

.mobileNavItem {
    border-bottom: 1px solid #e9ecef;
}

.mobileNavLink {
    display: block;
    padding: 1rem 0;
    text-decoration: none;
    color: #2c3e50;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.mobileLinkActive {
    color: #3498db;
}

.mobileSubmenuContent {
    padding-left: 1rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.mobileSubmenuContent.mobileSubmenuOpen {
    max-height: 500px;
}

.mobileSubmenuLink {
    display: block;
    padding: 0.8rem 0;
    text-decoration: none;
    color: #5a6c7d;
    font-weight: 500;
    border-bottom: 1px solid #f8f9fa;
    transition: all 0.3s ease;
}

.mobileSubmenuLink:hover {
    color: #3498db;
    padding-left: 0.5rem;
}

.mobileContactSection {
    padding: 2rem 0;
    border-top: 2px solid #e9ecef;
}

.mobileCallAction {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    text-decoration: none;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.mobileCallAction:hover {
    background: linear-gradient(135deg, #2980b9, #3498db);
    transform: translateY(-2px);
}

/* ===== HERO SECTION ===== */
.pageHeroSection {
    margin-top: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 2rem;
    text-align: center;
}

.heroContentWrapper h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.heroDescriptionText {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .headerMainContainer {
        padding: 0 1.5rem;
    }
    
    #mainNavigationList {
        gap: 2rem;
    }
    
    .dropdownContent {
        min-width: 700px;
    }
}

@media (max-width: 992px) {
    #primaryNavigationMenu,
    #headerActionsContainer {
        display: none;
    }
    
    #mobileNavigationToggle {
        display: flex;
    }
    
    .headerMainContainer {
        padding: 0 1rem;
    }
    
    #topInfoBar {
        display: none;
    }
}

@media (max-width: 768px) {
    .headerMainContainer {
        height: 70px;
    }
    
    #companyLogoContainer img {
        height: 45px;
    }
    
    #mobileNavigationPanel {
        top: 70px;
        height: calc(100vh - 70px);
    }
    
    .pageHeroSection {
        padding: 4rem 1rem;
    }
    
    .heroContentWrapper h1 {
        font-size: 2.2rem;
    }
    
    .heroDescriptionText {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .mobileNavContent {
        padding: 1.5rem;
    }
    
    .heroContentWrapper h1 {
        font-size: 1.8rem;
    }
    
    .heroDescriptionText {
        font-size: 1rem;
    }
}