/* === CSS VARIABLES === */
:root {
    /* Color Palette */
    --primary-navy: #1E2A47;
    --secondary-teal: #3AB795;
    --accent-gold: #F2C14E;
    --bg-off-white: #FAFAFA;
    --bg-light-gray: #E5E5E5;
    --white: #FFFFFF;
    --black: #000000;
    --text-dark: #2C3E50;
    --text-light: #7F8C8D;
    
    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Roboto', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-off-white);
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 2rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--secondary-teal);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-navy);
}

/* === LAYOUT === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xxl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--primary-navy);
}

/* === GRID SYSTEM === */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.two-columns {
    grid-template-columns: 1fr 1fr;
}

.three-columns {
    grid-template-columns: repeat(3, 1fr);
}

.four-columns {
    grid-template-columns: repeat(4, 1fr);
}

/* === BUTTONS === */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--secondary-teal);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-navy);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background-color: transparent;
    color: var(--secondary-teal);
    border: 2px solid var(--secondary-teal);
}

.btn-outline:hover {
    background-color: var(--secondary-teal);
    color: var(--white);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

/* === CARDS === */
.card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 60px;
    height: 60px;
    margin-bottom: var(--spacing-md);
}

.card-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.card-title {
    color: var(--primary-navy);
    margin-bottom: var(--spacing-sm);
}

.card-description {
    color: var(--text-light);
}

/* === HEADER === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) 0;
    min-height: 70px;
    width: 100%;
}

.logo {
    flex-shrink: 0;
    margin-right: var(--spacing-lg);
}

.logo-img {
    height: 50px;
    width: auto;
    max-width: 180px;
}

.desktop-nav {
    flex-grow: 1;
    display: flex;
    justify-content: flex-start;
    margin-left: var(--spacing-sm);
    margin-right: var(--spacing-md);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    margin: 0;
    padding: 0;
    align-items: center;
    flex-wrap: wrap;
}

.nav-link {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--text-dark);
    transition: color var(--transition-fast);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    color: var(--secondary-teal);
    background-color: rgba(58, 183, 149, 0.1);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-left: auto;
    flex-shrink: 0;
}

.header-actions .btn {
    white-space: nowrap;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-navy);
    margin: 2px 0;
    transition: all var(--transition-fast);
}

.mobile-nav {
    display: none;
    background-color: var(--white);
    border-top: 1px solid var(--bg-light-gray);
}

.mobile-nav-list {
    list-style: none;
    padding: var(--spacing-md) 0;
}

.mobile-nav-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--text-dark);
    border-bottom: 1px solid var(--bg-light-gray);
}

.mobile-nav-link:hover {
    background-color: var(--bg-off-white);
    color: var(--secondary-teal);
}

/* === FOOTER === */
.footer {
    background-color: var(--primary-navy);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.footer-section {
    text-align: center;
}

.footer-title {
    color: var(--accent-gold);
    margin-bottom: var(--spacing-md);
}

.footer-text {
    color: var(--bg-light-gray);
}

.footer-text a {
    color: var(--secondary-teal);
}

.footer-text a:hover {
    color: var(--accent-gold);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.social-link {
    width: 40px;
    height: 40px;
    background-color: var(--secondary-teal);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
    color: var(--white);
}

.social-link:hover {
    background-color: var(--accent-gold);
}

.social-link img {
    width: 20px;
    height: 20px;
    filter: brightness(0) invert(1);
}

.social-link svg {
    width: 20px;
    height: 20px;
    fill: var(--white);
}

.footer-links {
    list-style: none;
}

.footer-link {
    color: var(--bg-light-gray);
    display: block;
    padding: var(--spacing-xs) 0;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer-copyright {
    color: var(--bg-light-gray);
    font-size: 0.875rem;
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
    /* Typography */
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
    
    /* Layout */
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    /* Grid */
    .two-columns,
    .three-columns,
    .four-columns {
        grid-template-columns: 1fr;
    }
    
    /* Header */
    .header-content {
        justify-content: space-between;
    }
    
    .desktop-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-nav.active {
        display: block;
    }
    
    .logo {
        margin-right: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

@media (min-width: 769px) {
    .mobile-nav {
        display: none !important;
    }
}

/* === UNDER CONSTRUCTION STYLING === */
.under-construction {
    background-color: var(--bg-off-white);
    padding: var(--spacing-xl) 0;
}

.construction-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.construction-icon {
    margin-bottom: var(--spacing-lg);
}

.construction-icon svg {
    color: var(--secondary-teal);
}

.construction-title {
    color: var(--primary-navy);
    margin-bottom: var(--spacing-md);
    font-size: 2.5rem;
}

.construction-description {
    color: var(--text-light);
    font-size: 1.125rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.construction-timeline {
    color: var(--text-gray);
    font-size: 1rem;
    margin-bottom: var(--spacing-xl);
}

.construction-contact p {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

/* === UTILITY CLASSES === */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

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

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}