:root {
    /* Colors */
    --primary-color: #002060;
    --secondary-color: #00c0c0;
    --background-color: #F0F4F8;
    --footer-bg-color: #001030;
    --button-color: #00c0c0;
    --text-color-dark: #1A202C;
    --text-color-light: #4A5568;
    --section-bg-1: #FFFFFF;
    --section-bg-2: #E2E8F0;
    --section-bg-3: #F8FBFD;
    --section-bg-4: #DAE1EA;

    /* Typography */
    --heading-font: 'Poppins', sans-serif;
    --body-font: 'Open Sans', sans-serif;
    --base-font-size: 1rem; /* 16px */
    --line-height-base: 1.7;
    --line-height-heading: 1.2;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;

    /* Border Radius */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;

    /* Box Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.15);
    --shadow-btn-hover: 0 8px 15px rgba(0, 192, 192, 0.3);
}

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

body {
    font-family: var(--body-font);
    font-size: var(--base-font-size);
    line-height: var(--line-height-base);
    color: var(--text-color-light);
    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(--text-color-dark);
    line-height: var(--line-height-heading);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em; /* Subtle letter spacing for headings */
}

h1 {
    font-size: 3rem; /* 48px */
    font-weight: 700;
}

h2 {
    font-size: 2.5rem; /* 40px */
    font-weight: 600;
}

h3 {
    font-size: 2rem; /* 32px */
    font-weight: 600;
}

h4 {
    font-size: 1.5rem; /* 24px */
    font-weight: 500;
}

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

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

a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* Utility Classes for Layout and Spacing (complementing Tailwind) */
.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-xxl);
    padding-bottom: var(--spacing-xxl);
}

/* Section Backgrounds */
.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);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-lg); /* Rounded rectangular */
    font-family: var(--heading-font);
    font-size: var(--base-font-size);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background-color: var(--button-color);
    color: var(--section-bg-1); /* White text on button */
    
}

.btn-primary:hover {
    background-image: linear-gradient(to right, var(--button-color), #00e0e0); /* Subtle gradient on hover */
    transform: translateY(-2px);
    box-shadow: var(--shadow-btn-hover);
}

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

.btn-secondary:hover {
    background-image: linear-gradient(to right, var(--primary-color), #003080);
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0, 32, 96, 0.3);
}

/* Cards */
.card {
    background-color: var(--section-bg-1);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05); /* Subtle border */
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 25px rgba(0, 0, 0, 0.18);
}

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

.form-control {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid #CBD5E0; /* Tailwind border-gray-300 */
    border-radius: var(--border-radius-md);
    font-family: var(--body-font);
    font-size: var(--base-font-size);
    color: var(--text-color-dark);
    background-color: var(--section-bg-1);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(0, 192, 192, 0.2);
}

/* Footer Styling */
footer {
    background-color: var(--footer-bg-color);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--spacing-xl) 0;
    font-size: 0.9rem;
}

footer a {
    color: rgba(255, 255, 255, 0.8);
}

footer a:hover {
    color: var(--secondary-color);
    text-decoration: none;
}

/* Icons (assuming SVG icons will be styled via their parent or directly) */
.icon {
    width: 24px;
    height: 24px;
    fill: currentColor; /* Allows icon color to inherit text color */
}

/* Subtle Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in-element {
    animation: fadeIn 0.6s ease-out forwards;
    opacity: 0; /* Hidden by default */
}

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

    h2 {
        font-size: 2rem;
    }

    h3 {
        font-size: 1.75rem;
    }

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

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

    h2 {
        font-size: 1.75rem;
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }
}


/* 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;
    }
}