:root {
    /* Colors */
    --color-primary: #0D47A1;
    --color-secondary: #1C2A58;
    --color-background: #F0F4F8;
    --color-footer-bg: #0C2D48;
    --color-button: #25B2D1;
    --color-text-light: #f8f8f8;
    --color-text-dark: #333;
    --color-accent-hover: #1ABFE0; /* Slightly lighter/more vibrant than button color */

    /* Section Backgrounds */
    --section-bg-1: #E2E8F0;
    --section-bg-2: #F8FAFC;
    --section-bg-3: #ECF0F3;
    --section-bg-4: #DDF2F8;

    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Lato', sans-serif;
    --font-size-base: 1rem; /* 16px */

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;

    /* Border Radius */
    --border-radius-sm: 0.5rem;
    --border-radius-md: 0.75rem;
    --border-radius-lg: 1rem;

    /* Shadows */
    --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-glass-inner: inset 0 2px 4px rgba(255, 255, 255, 0.2);
    --shadow-glass-outer: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
    --shadow-header: 0 2px 10px rgba(0, 0, 0, 0.05);

    /* Transitions */
    --transition-speed: 0.3s;
    --transition-ease: ease-in-out;
}

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

body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--color-text-dark);
    background-color: var(--color-background);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-secondary);
    line-height: 1.2;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em; /* Subtle tightening for headings */
}

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

h2 {
    font-size: 2.5rem;
    font-weight: 600;
}

h3 {
    font-size: 1.8rem;
    font-weight: 600;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-speed) var(--transition-ease);
}

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

/* Utility Classes for Layout/Spacing (complementing Tailwind) */
.container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
}

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

/* 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);
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.75); /* Translucent background */
    backdrop-filter: blur(10px); /* Glassmorphism blur */
    -webkit-backdrop-filter: blur(10px); /* Safari support */
    padding: var(--spacing-sm) 0;
    box-shadow: none; /* No shadow initially */
    transition: box-shadow var(--transition-speed) var(--transition-ease), background-color var(--transition-speed) var(--transition-ease);
}

.header.scrolled {
    box-shadow: var(--shadow-header);
    background-color: rgba(255, 255, 255, 0.95); /* Slightly less translucent when scrolled */
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.03em;
}

.nav-link {
    font-weight: 500;
    color: var(--color-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    position: relative;
    transition: color var(--transition-speed) var(--transition-ease);
}

.nav-link:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-speed) var(--transition-ease);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    border-radius: var(--border-radius-sm); /* Rounded corners */
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: var(--font-size-base);
    cursor: pointer;
    border: none;
    outline: none;
    transition: all var(--transition-speed) var(--transition-ease);
    text-align: center;
    text-decoration: none;
    position: relative;
    overflow: hidden; /* For glow effect */
}

.btn-primary {
    background-color: var(--color-button);
    color: var(--color-text-light);
    box-shadow: 0 4px 15px rgba(37, 178, 209, 0.3); /* Subtle initial glow */
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 178, 209, 0.5); /* Enhanced glow on hover */
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(37, 178, 209, 0.2);
}

/* CTA Button with sharp contrasting border */
.btn-cta {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    border: 2px solid var(--color-button); /* Sharp contrasting border */
    border-radius: 0.25rem; /* More rectangular */
    padding: 1rem 2.2rem;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    box-shadow: 0 6px 20px rgba(13, 71, 161, 0.25);
}

.btn-cta:hover {
    background-color: var(--color-secondary);
    border-color: var(--color-accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(13, 71, 161, 0.4);
}

/* Card Styles */
.card {
    background-color: rgba(255, 255, 255, 0.6); /* Semi-transparent white for glassmorphism */
    border-radius: var(--border-radius-md); /* Softly rounded corners */
    padding: var(--spacing-md);
    box-shadow: var(--shadow-glass-outer); /* Outer glassmorphism shadow */
    border: 1px solid rgba(13, 71, 161, 0.1); /* Lighter shade of primary color */
    backdrop-filter: blur(15px); /* Glassmorphism blur */
    -webkit-backdrop-filter: blur(15px);
    transition: transform var(--transition-speed) var(--transition-ease), box-shadow var(--transition-speed) var(--transition-ease);
    position: relative;
    overflow: hidden; /* Critical for inner shadow effect */
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: inherit;
    box-shadow: var(--shadow-glass-inner); /* Subtle inner shadow */
    pointer-events: none; /* Allows clicks to pass through */
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glass-outer), 0 12px 40px 0 rgba(31, 38, 135, 0.2);
}

/* Footer Styles */
.footer {
    background-color: var(--color-footer-bg);
    color: var(--color-text-light);
    padding: var(--spacing-xl) 0;
    font-size: 0.9rem;
}

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

.footer-section h4 {
    color: var(--color-button);
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
}

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

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

.footer-section ul li a {
    color: var(--color-text-light);
    transition: color var(--transition-speed) var(--transition-ease);
}

.footer-section ul li a:hover {
    color: var(--color-button);
    text-decoration: underline;
}

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

.social-links a {
    display: inline-block;
    color: var(--color-text-light);
    font-size: 1.5rem;
    margin-right: var(--spacing-sm);
    transition: transform var(--transition-speed) var(--transition-ease), color var(--transition-speed) var(--transition-ease);
}

.social-links a:hover {
    color: var(--color-button);
    transform: translateY(-3px);
}

/* Responsive Design */
@media (max-width: 1024px) {
    h1 {
        font-size: 2.8rem;
    }

    h2 {
        font-size: 2rem;
    }

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

@media (max-width: 768px) {
    h1 {
        font-size: 2.2rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    h3 {
        font-size: 1.5rem;
    }

    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .nav-links {
        margin-top: var(--spacing-sm);
        width: 100%;
        text-align: center;
    }

    .nav-link {
        display: block;
        padding: var(--spacing-xs) 0;
    }

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

    .footer-section ul {
        margin-bottom: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    body {
        font-size: 0.95rem;
    }

    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .btn {
        padding: 0.7rem 1.5rem;
        font-size: 0.9rem;
    }

    .btn-cta {
        padding: 0.9rem 1.8rem;
        font-size: 1rem;
    }

    .card {
        padding: var(--spacing-sm);
    }
}


/* 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;
    }
}