:root {
    /* Colors */
    --color-primary: #457B9D;
    --color-secondary: #A8DADC;
    --color-background: #F1FAEE;
    --color-footer-bg: #1D3557;
    --color-text-dark: #1D3557;
    --color-text-light: #F1FAEE;
    --color-accent: #E63946; /* A subtle, vibrant accent for key elements */

    /* Section Backgrounds */
    --section-bg-1: #F1FAEE;
    --section-bg-2: #A8DADC;
    --section-bg-3: #D9EBF6;

    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    --font-size-base: 1.125rem; /* 18px */
    --line-height-base: 1.7;
    --line-height-heading: 1.2;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;

    /* Border Radius */
    --border-radius-sm: 0.5rem;
    --border-radius-md: 1rem;
    --border-radius-lg: 2rem;

    /* Shadows Claymorphism */
    --shadow-clay-light: 0.2rem 0.2rem 0.5rem rgba(174, 174, 192, 0.2), -0.2rem -0.2rem 0.5rem rgba(255, 255, 255, 0.8);
    --shadow-clay-inset: inset 0.1rem 0.1rem 0.3rem rgba(174, 174, 192, 0.2), inset -0.1rem -0.1rem 0.3rem rgba(255, 255, 255, 0.8);
    --shadow-clay-button: 0.3rem 0.3rem 0.6rem rgba(174, 174, 192, 0.2), -0.3rem -0.3rem 0.6rem rgba(255, 255, 255, 0.8);
    --shadow-clay-button-hover: inset 0.2rem 0.2rem 0.5rem rgba(174, 174, 192, 0.2), inset -0.2rem -0.2rem 0.5rem rgba(255, 255, 255, 0.8);

    /* Transitions */
    --transition-ease: all 0.3s 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);
    line-height: var(--line-height-heading);
    color: var(--color-primary);
    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: 2rem; font-weight: 600; }
h4 { font-size: 1.5rem; font-weight: 500; }
h5 { font-size: 1.25rem; font-weight: 500; }
h6 { font-size: 1rem; font-weight: 500; }

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

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

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

/* Utility Classes for Spacing */
.py-section { padding-top: var(--spacing-xl); padding-bottom: var(--spacing-xl); }
.mt-section { margin-top: var(--spacing-xl); }
.mb-section { margin-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); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-lg); /* More rounded for claymorphism */
    font-family: var(--font-heading);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: var(--transition-ease);
    box-shadow: var(--shadow-clay-button); /* Claymorphism shadow */
    color: var(--color-text-light); /* Default button text color */
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-light);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: var(--color-text-dark);
}

.btn:hover {
    transform: translateY(-2px); /* Slight lift */
    box-shadow: var(--shadow-clay-button-hover); /* Inset shadow for "enfoncement" */
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-clay-inset); /* Deeper inset on active */
}

/* Header */
.header {
    position: sticky;
    top: 0;
    width: 100%;
    background-color: rgba(241, 250, 238, 0.8); /* Semi-transparent background */
    backdrop-filter: blur(8px); /* Frosted glass effect */
    z-index: 1000;
    padding: var(--spacing-md) 0;
    transition: background-color var(--transition-ease);
    box-shadow: var(--shadow-clay-light);
}

.header.scrolled {
    background-color: var(--color-background); /* Opaque on scroll */
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

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

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

.header-nav {
    flex-grow: 1; /* Allow nav to take available space */
    display: flex;
    justify-content: center; /* Center navigation */
}

.header-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: var(--spacing-lg);
}

.header-nav a {
    color: var(--color-text-dark);
    font-weight: 500;
    font-size: var(--font-size-base);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    position: relative;
    overflow: hidden;
}

.header-nav a:hover {
    color: var(--color-primary);
    background-color: rgba(69, 123, 157, 0.1);
    transform: translateY(-2px);
}

.header-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width 0.3s ease, left 0.3s ease;
}

.header-nav a:hover::after {
    width: 100%;
    left: 0;
}


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

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.footer h4 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1.2rem;
    letter-spacing: 0.05em;
}

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

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

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

.footer ul a:hover {
    color: var(--color-secondary);
    opacity: 1;
    text-decoration: none;
    transform: translateX(5px);
}

.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: 1.5rem;
    opacity: 0.8;
}

.footer-social-icons a:hover {
    color: var(--color-secondary);
    opacity: 1;
    transform: scale(1.1);
}

.footer-bottom {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-text-dark);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-secondary);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    color: var(--color-text-dark);
    background-color: var(--color-background);
    box-shadow: var(--shadow-clay-light); /* Subtle claymorphism for inputs */
    transition: var(--transition-ease);
    -webkit-appearance: none; /* For select consistency */
    -moz-appearance: none;
    appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-clay-inset); /* Slight inset on focus */
}

/* Validation Feedback (JustValidate specific, but generic styles here) */
.is-valid {
    border-color: #28a745 !important;
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25) !important;
}

.is-invalid {
    border-color: #dc3545 !important;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25) !important;
}

.just-validate-error-label {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

/* Claymorphism for interactive elements */
.card {
    background-color: var(--color-background);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-clay-light);
    transition: var(--transition-ease);
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0.4rem 0.4rem 0.8rem rgba(174, 174, 192, 0.2), -0.4rem -0.4rem 0.8rem rgba(255, 255, 255, 0.8);
}

/* Media Queries */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
    .header-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    .header-nav ul {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
    .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: 1.75rem; }
    .btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 1rem;
    }
}


/* 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;
    }
}