:root {
    /* Colors */
    --color-primary: #0077B6; /* Deep Blue, like a clear winter sky */
    --color-secondary: #90E0EF; /* Light Blue, icy sheen */
    --color-background: #EBF8FF; /* Very light blue, snowy backdrop */
    --color-footer-bg: #023E8A; /* Darker blue for depth */
    --color-button: #00B4D8; /* Vibrant turquoise for accents */
    --color-text-dark: #1A202C; /* Tailwind's default gray-900 */
    --color-text-light: #F7FAFC; /* Tailwind's default gray-100 */
    --color-accent-hover: #0096C7; /* Slightly darker button on hover */
    --color-glass-light: rgba(255, 255, 255, 0.2); /* Light glassmorphism */
    --color-glass-dark: rgba(255, 255, 255, 0.1); /* Darker glassmorphism for contrast */

    /* Section Backgrounds (Tailwind-like shades for consistency) */
    --section-bg-1: #E0F2FE; /* blue-100 */
    --section-bg-2: #BFDBFE; /* blue-200 */
    --section-bg-3: #93C5FD; /* blue-300 */
    --section-bg-4: #60A5FA; /* blue-400 */
    --section-bg-5: #3B82F6; /* blue-500 */
    --section-bg-6: #DBEAFE; /* blue-50 */

    /* Typography */
    --font-heading: 'Inter', sans-serif;
    --font-body: 'Roboto', sans-serif;
    --font-size-base: 1rem;
    --line-height-base: 1.7; /* Generous line-height for readability */

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

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

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.37); /* Specific for glassmorphism */
    --shadow-inner-button: inset 0 2px 4px 0 rgba(0, 0, 0, 0.1); /* For button depth */

    /* 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: var(--line-height-base);
    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-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    letter-spacing: -0.025em; /* Slightly tighter for headings */
}

h1 {
    font-size: 3.5rem; /* Large and impactful */
    font-weight: 700;
}

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

h3 {
    font-size: 2rem;
    font-weight: 600;
}

h4 {
    font-size: 1.5rem;
    font-weight: 500;
}

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

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

a:hover {
    color: var(--color-button); /* Accent color on hover */
    text-decoration: underline;
}

/* Specific Classes */

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: transparent;
    padding: var(--spacing-sm) var(--spacing-lg);
    transition: background-color var(--transition-speed) var(--transition-ease),
                backdrop-filter var(--transition-speed) var(--transition-ease);
    backdrop-filter: blur(0px); /* Initial state */
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.7); /* Slightly opaque white */
    backdrop-filter: blur(10px); /* Glassmorphism effect */
    box-shadow: var(--shadow-glass);
    border-bottom: 1px solid var(--color-glass-light);
}

.header-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.header-logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
}

.header-menu a {
    color: var(--color-text-dark);
    margin-left: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-speed) var(--transition-ease),
                color var(--transition-speed) var(--transition-ease);
}

.header-menu a:hover {
    background-color: var(--color-secondary);
    color: var(--color-primary);
    text-decoration: none;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    border: none;
    border-radius: var(--border-radius-lg); /* Rounded rectangular */
    font-family: var(--font-heading);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed) var(--transition-ease);
    text-decoration: none;
    box-shadow: var(--shadow-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-primary {
    background-color: var(--color-button);
    color: var(--color-text-light);
    box-shadow: var(--shadow-md), var(--shadow-inner-button); /* Inner shadow for depth */
}

.btn-primary:hover {
    background-image: linear-gradient(to right, var(--color-button), var(--color-accent-hover));
    transform: translateY(-2px); /* Slight lift on hover */
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background-color: var(--color-button);
    color: var(--color-text-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Section Backgrounds */
.section {
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-lg);
}

.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);
    color: var(--color-text-light); /* Darker background, light text */
}

.section-bg-5 h1,
.section-bg-5 h2,
.section-bg-5 h3,
.section-bg-5 h4,
.section-bg-5 h5,
.section-bg-5 h6,
.section-bg-5 a {
    color: var(--color-secondary); /* Light accents on dark background */
}

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

/* Container for content within sections */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Card Component Example (if needed for glassmorphism) */
.card-glass {
    background: var(--color-glass-light);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-glass-light);
    box-shadow: var(--shadow-glass);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    transition: transform var(--transition-speed) var(--transition-ease),
                box-shadow var(--transition-speed) var(--transition-ease);
}

.card-glass:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 64px 0 rgba(31, 38, 135, 0.45); /* More pronounced shadow on hover */
}

/* Footer Styles */
.footer {
    background-color: var(--color-footer-bg);
    color: var(--color-text-light);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

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

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

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

    h2 {
        font-size: 2rem;
    }

    h3 {
        font-size: 1.5rem;
    }

    .header-menu a {
        margin-left: var(--spacing-sm);
        font-size: 0.9rem;
    }

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

    .section {
        padding: var(--spacing-lg) 0;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }
}

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

    h2 {
        font-size: 1.75rem;
    }

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

    .header-menu {
        margin-top: var(--spacing-sm);
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
    }

    .header-menu a {
        margin: var(--spacing-xs);
    }
}


/* 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;
    }
}