:root {
    /* Colors */
    --color-primary: #004B8D; /* Deep Blue */
    --color-secondary: #FF5733; /* Energetic Orange */
    --color-background: #F0F8FF; /* AliceBlue */
    --color-footer-bg: #0F284B; /* Darker Blue for Footer */
    --color-text-light: #F0F8FF;
    --color-text-dark: #333333;
    --color-accent-hover: #FF7043; /* Lighter orange for hover */

    --section-bg-1: #E0F2F7; /* Light Cyan */
    --section-bg-2: #D0E8F0; /* Pale Blue */
    --section-bg-3: #BEE3F2; /* Sky Blue */
    --section-bg-4: #A8D7E7; /* Light Steel Blue */

    /* Fonts */
    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;

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

    /* Border Radius */
    --border-radius-sm: 0.5rem;
    --border-radius-md: 1rem;
    --border-radius-lg: 1.5rem;
    --border-radius-full: 9999px;

    /* Shadows */
    --shadow-soft: 0 4px 15px rgba(0, 0, 0, 0.1);
    --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.08); /* More spread for cards */
    --shadow-elevation: 0 10px 20px rgba(0, 0, 0, 0.15); /* For hover effects */

    /* Glassmorphism */
    --glass-blur: 8px;
    --glass-bg-opacity: 0.2;
    --glass-border-opacity: 0.3;

    /* Transitions */
    --transition-fast: 0.2s ease-in-out;
    --transition-default: 0.3s ease-in-out;
}

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

body {
    font-family: var(--font-secondary);
    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-primary);
    color: var(--color-primary);
    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;
}

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

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

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

a:hover {
    color: var(--color-secondary);
}

/* Utility to make elements breathe */
.container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

section {
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden; /* For potential background effects */
}

/* 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: none;
    border-radius: var(--border-radius-lg); /* Rounded rectangular */
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    color: var(--color-text-light); /* Contrasting text color */
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent-hover) 100%);
    box-shadow: 0 5px 15px rgba(255, 87, 51, 0.3); /* Crisp shadow */
    transition: all var(--transition-default);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    opacity: 0;
    transition: opacity var(--transition-fast);
    z-index: -1;
}

.btn:hover {
    transform: translateY(-3px); /* Slight elevation effect */
    box-shadow: var(--shadow-elevation);
    background: linear-gradient(135deg, var(--color-accent-hover) 0%, #FF5733 100%);
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.8); /* Light transparent background */
    backdrop-filter: blur(var(--glass-blur));
    transition: background-color var(--transition-default), backdrop-filter var(--transition-default);
    padding: var(--spacing-sm) 0;
}

.header.scrolled {
    background-color: var(--color-background); /* Solid on scroll */
    box-shadow: var(--shadow-soft);
    padding: var(--spacing-xs) 0;
}

.header .nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.header .logo {
    display: flex;
    align-items: center;
}

.header .logo img {
    border-radius: var(--border-radius-full); /* Circular logo */
    height: 50px; /* Adjust as needed */
    width: 50px;
    object-fit: cover;
    margin-right: var(--spacing-xs);
}

.header .logo-text {
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--color-primary);
}

.header nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.header nav ul li {
    margin-left: var(--spacing-lg);
}

.header nav ul li a {
    color: var(--color-primary);
    font-family: var(--font-primary);
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    padding-bottom: 5px;
    transition: color var(--transition-fast);
}

.header nav ul li a:hover {
    color: var(--color-secondary);
}

.header nav ul li a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: width var(--transition-fast) ease-out;
}

.header nav ul li a:hover::after {
    width: 100%;
}

/* Cards */
.card {
    background-color: rgba(255, 255, 255, 0.7); /* Light background for card */
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(var(--glass-blur)); /* Frosted glass effect */
    border: 1px solid rgba(255, 255, 255, var(--glass-border-opacity));
    transition: transform var(--transition-default), box-shadow var(--transition-default);
    display: flex;
    flex-direction: column;
    overflow: hidden; /* Ensure images fit */
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-elevation);
}

.card img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-sm); /* Slightly rounded edges for images */
    object-fit: cover;
    margin-bottom: var(--spacing-md);
    filter: saturate(0.8) brightness(1.05) contrast(1.05) hue-rotate(-5deg); /* Cool tone filter */
}

/* Footer */
.footer {
    background-color: var(--color-footer-bg);
    color: var(--color-text-light);
    padding: var(--spacing-xl) 0;
    font-family: var(--font-secondary);
    position: relative;
    overflow: hidden;
}

.footer .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1); /* Frosted glass line */
    padding-bottom: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer h3 {
    color: var(--color-text-light);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.05em;
}

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

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

.footer ul li a {
    color: var(--color-text-light);
    opacity: 0.8;
    transition: opacity var(--transition-fast), color var(--transition-fast);
}

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

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

.footer .social-icons a {
    color: var(--color-text-light);
    font-size: 1.8rem;
    transition: all var(--transition-default);
    text-shadow: 0 0 0 rgba(255, 87, 51, 0); /* Initial state, no glow */
}

.footer .social-icons a:hover {
    color: var(--color-secondary);
    transform: scale(1.1);
    text-shadow: 0 0 10px var(--color-secondary), 0 0 20px var(--color-secondary); /* Glow effect */
}

.footer .copyright {
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.7;
    padding-top: var(--spacing-md);
}

/* Glassmorphism Overlays (example) */
.glass-overlay {
    background-color: rgba(255, 255, 255, var(--glass-bg-opacity));
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid rgba(255, 255, 255, var(--glass-border-opacity));
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-soft);
}

/* Scroll to top button (example) */
.scroll-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    background-color: var(--color-secondary);
    color: var(--color-text-light);
    border-radius: var(--border-radius-full);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-soft);
    transition: all var(--transition-default);
    opacity: 0;
    visibility: hidden;
    z-index: 999;
}

.scroll-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-elevation);
}

/* Media Queries */
@media (max-width: 1024px) {
    h1 {
        font-size: 3rem;
    }
    h2 {
        font-size: 2rem;
    }
    .header nav ul li {
        margin-left: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
    h2 {
        font-size: 1.8rem;
    }
    .header .nav-container {
        flex-direction: column;
        align-items: flex-start;
    }
    .header .logo {
        margin-bottom: var(--spacing-sm);
    }
    .header nav ul {
        flex-direction: column;
        width: 100%;
        margin-top: var(--spacing-sm);
    }
    .header nav ul li {
        margin: 0;
        width: 100%;
        text-align: center;
        padding: var(--spacing-xs) 0;
    }
    .header nav ul li a {
        display: block;
        padding: var(--spacing-xs) 0;
    }
    .footer .container {
        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;
    }
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }
    .section {
        padding: var(--spacing-lg) 0;
    }
}

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

.animate-fade-in {
    animation: fadeIn 0.8s ease-out forwards;
    opacity: 0; /* Ensure hidden before animation */
}
/* Example usage: Add .animate-fade-in to elements, possibly with a JS intersection observer */


/* 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;
    }
}