:root {
    /* Colors */
    --color-primary: #0F4C81; /* Dark Sapphire */
    --color-secondary: #FFD700; /* Gold */
    --color-background: #F0F8FF; /* Alice Blue */
    --color-footer-bg: #1A2E44; /* Dark Azure */
    --color-button: #0F4C81; /* Dark Sapphire */
    --color-text-dark: #1A2E44;
    --color-text-light: #F0F8FF;

    --section-bg-1: #E1EFFB;
    --section-bg-2: #D0E4F7;
    --section-bg-3: #B0D8FF;
    --section-bg-4: #C2E0FF;
    --section-bg-5: #9DCEF1;
    --section-bg-6: #A5D7F1;

    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Roboto', sans-serif;
    --line-height-body: 1.75;
    --letter-spacing-heading: -0.02em;

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

    /* Border Radius */
    --border-radius-btn: 0.5rem;
    --border-radius-card: 0.75rem;

    /* Shadows */
    --shadow-btn-inner: inset 0 2px 4px rgba(0, 0, 0, 0.15);
    --shadow-card: 0 10px 30px rgba(15, 76, 129, 0.1);
    --shadow-hover: 0 15px 40px rgba(15, 76, 129, 0.2);

    /* Transitions */
    --transition-duration: 0.3s;
    --transition-timing-function: ease-in-out;
}

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

body {
    font-family: var(--font-body);
    color: var(--color-text-dark);
    background-color: var(--color-background);
    line-height: var(--line-height-body);
    margin: 0;
    padding: 0;
    overflow-x: hidden; /* Prevent horizontal scroll from animations */
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-duration) var(--transition-timing-function);
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text-dark);
    letter-spacing: var(--letter-spacing-heading);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

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);
}

/* Header Styles */
.header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: var(--spacing-sm) var(--spacing-md);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-bottom: 2px solid var(--color-secondary); /* Subtle gold line */
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-logo {
    display: flex;
    align-items: center;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--color-primary);
}

.header-logo img {
    height: 40px; /* Adjust as needed for abstract logo */
    margin-right: 10px;
}

.nav-links a {
    margin-left: var(--spacing-md);
    font-weight: 500;
    color: var(--color-text-dark);
    position: relative;
    padding-bottom: 5px;
}

.nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: width var(--transition-duration) var(--transition-timing-function);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    border: none;
    border-radius: var(--border-radius-btn);
    background-color: var(--color-button);
    color: var(--color-text-light);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-duration) var(--transition-timing-function);
    box-shadow: var(--shadow-btn-inner);
    position: relative;
    overflow: hidden;
}

.btn:hover {
    background-color: var(--color-primary); /* Darker shade of primary on hover */
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 2px solid transparent;
    border-radius: var(--border-radius-btn);
    pointer-events: none;
    transition: border-color var(--transition-duration) var(--transition-timing-function);
}

.btn:hover::before {
    border-color: var(--color-secondary); /* Gold border on hover */
}

/* Section Backgrounds for modular blue blocks */
.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);
}

.section-bg-5 {
    background-color: var(--section-bg-5);
}

.section-bg-6 {
    background-color: var(--section-bg-6);
}

/* Footer Styles */
.footer {
    background-color: var(--color-footer-bg);
    color: var(--color-text-light);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        repeating-linear-gradient(
            45deg,
            rgba(255, 215, 0, 0.1) 0,
            rgba(255, 215, 0, 0.1) 2px,
            transparent 2px,
            transparent 10px
        ),
        repeating-linear-gradient(
            -45deg,
            rgba(255, 215, 0, 0.1) 0,
            rgba(255, 215, 0, 0.1) 2px,
            transparent 2px,
            transparent 10px
        );
    background-size: 20px 20px;
    opacity: 0.3;
    animation: circuit-glow 10s linear infinite alternate;
}

@keyframes circuit-glow {
    0% { opacity: 0.1; }
    50% { opacity: 0.4; }
    100% { opacity: 0.1; }
}


.footer-content {
    position: relative;
    z-index: 1; /* Ensure content is above the circuit pattern */
    max-width: 1200px;
    margin: 0 auto;
}

.footer-links {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--color-text-light);
    margin: 0 var(--spacing-sm);
    font-weight: 400;
    transition: color var(--transition-duration) var(--transition-timing-function);
}

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

.social-icons {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.social-icons a {
    color: var(--color-text-light);
    font-size: 1.5rem;
    margin: 0 var(--spacing-xs);
    transition: text-shadow 0.3s ease-in-out, transform 0.3s ease-in-out;
}

.social-icons a:hover {
    text-shadow: 0 0 8px var(--color-secondary), 0 0 15px var(--color-secondary);
    transform: scale(1.1);
}

.footer-copyright {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* General Layout/Utility */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

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

/* AOS specific styles (to complement the library) */
[data-aos] {
    opacity: 0;
    transition-property: transform, opacity;
}

[data-aos].aos-animate {
    opacity: 1;
}

/* Example of a card style, if needed */
.card {
    background-color: #fff;
    border-radius: var(--border-radius-card);
    box-shadow: var(--shadow-card);
    padding: var(--spacing-md);
    transition: transform var(--transition-duration) var(--transition-timing-function), box-shadow var(--transition-duration) var(--transition-timing-function);
}

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

/* Responsive Adjustments */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    h3 {
        font-size: 1.5rem;
    }

    .header {
        flex-direction: column;
        padding: var(--spacing-sm);
    }

    .nav-links {
        margin-top: var(--spacing-sm);
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-links a {
        margin: var(--spacing-xs) var(--spacing-sm);
    }

    .footer-links {
        flex-direction: column;
    }

    .footer-links a {
        margin-bottom: var(--spacing-xs);
    }

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

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

    h2 {
        font-size: 1.75rem;
    }

    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }

    .container {
        padding: var(--spacing-md) 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;
    }
}