:root {
    /* Colors */
    --primary-color: #0077B6;
    --secondary-color: #00B4D8;
    --background-color: #E0FFFF;
    --footer-bg-color: #001F3F;
    --button-color: #0077B6;
    --text-color-dark: #001F3F;
    --text-color-light: #F0FFFF;
    --glass-bg-light: rgba(255, 255, 255, 0.15);
    --glass-border-light: rgba(255, 255, 255, 0.2);

    /* Section Backgrounds */
    --section-bg-1: #E0FFFF;
    --section-bg-2: #F0FFFF;
    --section-bg-3: #C7E9EE;
    --section-bg-4: #B0E0E6;

    /* Typography */
    --heading-font: 'Roboto', sans-serif;
    --body-font: 'Open Sans', sans-serif;
    --base-font-size: 1.125rem; /* 18px */
    --line-height-body: 1.7;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;

    /* Borders & Shadows */
    --border-radius-sm: 0.5rem;
    --border-radius-md: 0.75rem;
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px rgba(0, 0, 0, 0.15);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--body-font);
    font-size: var(--base-font-size);
    line-height: var(--line-height-body);
    color: var(--text-color-dark);
    background-color: var(--background-color);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--heading-font);
    color: var(--primary-color);
    line-height: 1.2;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-color-dark);
}

h3 {
    font-size: 1.75rem;
    font-weight: 600;
}

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

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease, transform 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
    transform: translateY(-2px);
}

/* Utility Classes for Spacing and Backgrounds */
.container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.section-padding {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}

.section-bg-1 {
    background-color: var(--section-bg-1);
}

.section-bg-2 {
    background-color: var(--section-bg-2);
}

.section-bg-3 {
    background-color: var(--section-bg-3);
}

.section-bg-4 {
    background-color: var(--section-bg-4);
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: background-color 0.3s ease, backdrop-filter 0.3s ease, box-shadow 0.3s ease;
    padding: var(--spacing-sm) 0;
}

.header.scrolled {
    background-color: var(--glass-bg-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--glass-shadow);
    border-bottom: 1px solid var(--glass-border-light);
}

.header .logo {
    font-family: var(--heading-font);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.header .nav-link {
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    position: relative;
    overflow: hidden;
    color: var(--text-color-dark);
}

.header .nav-link:hover {
    color: var(--primary-color);
    transform: none; /* Override base a:hover transform */
}

.header .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--secondary-color);
    transform: translateX(-100%);
    transition: transform 0.3s ease-out;
}

.header .nav-link:hover::after {
    transform: translateX(0);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-family: var(--heading-font);
    font-size: var(--base-font-size);
    font-weight: 600;
    text-decoration: none;
    color: var(--text-color-light);
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--secondary-color), var(--primary-color));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.btn:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.btn:hover::before {
    opacity: 1;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    box-shadow: none;
}

.btn-outline::before {
    background: var(--primary-color);
}

.btn-outline:hover {
    color: var(--text-color-light);
    box-shadow: var(--shadow-sm);
}
.btn-outline:hover::before {
    opacity: 1;
}


/* Cards */
.card {
    background-color: var(--section-bg-2); /* Light background for cards */
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.card.card-blue-border {
    border-color: var(--primary-color);
}

.card.card-green-border {
    border-color: var(--secondary-color); /* Using secondary as a 'green' accent */
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-color-dark);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid #ccc;
    border-radius: var(--border-radius-sm);
    font-family: var(--body-font);
    font-size: 1rem;
    color: var(--text-color-dark);
    background-color: #fff;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 119, 182, 0.2);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* Footer */
.footer {
    background-color: var(--footer-bg-color);
    color: var(--text-color-light);
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: -50px; /* Adjust to control wave position */
    left: 0;
    width: 100%;
    height: 100px; /* Height of the wave effect */
    background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 1440 100" xmlns="http://www.w3.org/2000/svg"><path fill="%23001F3F" fill-opacity="1" d="M0,64L48,69.3C96,75,192,85,288,80C384,75,480,53,576,42.7C672,32,768,32,864,32C960,32,1056,32,1152,42.7C1248,53,1344,75,1392,85.3L1440,96L1440,0L1392,0C1344,0,1248,0,1152,0C1056,0,960,0,864,0C768,0,672,0,576,0C480,0,384,0,288,0C192,0,96,0,48,0L0,0Z"></path><path fill="%230077B6" fill-opacity="0.3" d="M0,96L48,85.3C96,75,192,53,288,48C384,43,480,53,576,64C672,75,768,85,864,80C960,75,1056,64,1152,58.7C1248,53,1344,53,1392,53.3L1440,53L1440,0L1392,0C1344,0,1248,0,1152,0C1056,0,960,0,864,0C768,0,672,0,576,0C480,0,384,0,288,0C192,0,96,0,48,0L0,0Z"></path></svg>') no-repeat center bottom;
    background-size: cover;
    z-index: 0;
    opacity: 0.2;
}

.footer .footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.footer h4 {
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
    font-weight: 600;
}

.footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer ul li {
    margin-bottom: var(--spacing-xs);
}

.footer ul li a {
    color: var(--text-color-light);
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer ul li a:hover {
    opacity: 1;
    color: var(--secondary-color);
    transform: translateX(5px);
}

.footer .social-icons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.footer .social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-color-light);
    font-size: 1.2rem;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.footer .social-icon:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px) scale(1.05);
    color: var(--footer-bg-color);
}

.footer .copyright {
    text-align: center;
    margin-top: var(--spacing-lg);
    opacity: 0.7;
    position: relative;
    z-index: 1;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

.animate-fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

.animate-slide-up {
    animation: slideUp 0.7s ease-out forwards;
}

/* Custom styles for image handling - assuming images are placed within specific containers */
.image-wrapper {
    overflow: hidden;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.image-wrapper:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.image-wrapper img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* Media Queries for Responsiveness */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    .header .logo {
        font-size: 1.5rem;
    }

    .header .nav-link {
        padding: var(--spacing-xs);
    }

    .footer .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer .social-icons {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .section-padding {
        padding-top: var(--spacing-lg);
        padding-bottom: var(--spacing-lg);
    }

    .btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 1rem;
    }
}


/* Cookie Banner Additional Styles for Tailwind */
.cookie-banner-hover-effect:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

@media (prefers-reduced-motion: reduce) {
    .cookie-banner-hover-effect:hover {
        transform: none;
    }
}