:root {
    /* Couleurs */
    --color-primary: #2a623c;
    --color-secondary: #b4cf9b;
    --color-background: #eef4ed;
    --color-footer-bg: #1d532f;
    --color-button: #4cb36a;
    --color-text-dark: #1a3c26; /* Un ton plus foncé que primary pour le texte principal */
    --color-text-light: #fcfdfc;
    --color-section-bg-1: #fcfdfc;
    --color-section-bg-2: #eef4ed;
    --color-section-bg-3: #d9e4d4;
    --color-section-bg-4: #c2d6b7;

    /* Typographie */
    --font-family-heading: 'Montserrat', sans-serif;
    --font-family-body: 'Open Sans', sans-serif;
    --font-size-base: 1rem; /* 16px */

    /* Espacement */
    --spacing-unit: 1rem;
    --padding-sm: calc(var(--spacing-unit) * 1); /* 16px */
    --padding-md: calc(var(--spacing-unit) * 1.5); /* 24px */
    --padding-lg: calc(var(--spacing-unit) * 2); /* 32px */
    --margin-sm: calc(var(--spacing-unit) * 1);
    --margin-md: calc(var(--spacing-unit) * 1.5);
    --margin-lg: calc(var(--spacing-unit) * 2);

    /* Border Radius */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;

    /* Ombres */
    --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.1);

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

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    color: var(--color-primary);
    line-height: 1.2;
    margin-top: calc(var(--margin-lg) * 1.5);
    margin-bottom: var(--margin-md);
    letter-spacing: -0.02em;
}

h1 { font-size: 3.2rem; font-weight: 700; }
h2 { font-size: 2.5rem; font-weight: 600; }
h3 { font-size: 2rem; font-weight: 600; }
h4 { font-size: 1.6rem; font-weight: 500; }
h5 { font-size: 1.3rem; font-weight: 500; }
h6 { font-size: 1.1rem; font-weight: 500; }

p {
    margin-bottom: var(--margin-md);
    font-size: var(--font-size-base);
}

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

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

img {
    max-width: 100%;
    height: auto;
    display: block; /* Supprime l'espace sous l'image */
    border-radius: var(--border-radius-md);
}

/* Utilitaires de conteneur */
.container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--padding-md);
    padding-right: var(--padding-md);
}

/* Boutons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--padding-sm) var(--padding-lg);
    border: none;
    border-radius: var(--border-radius-md);
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-speed) var(--transition-timing-function);
    box-shadow: var(--shadow-soft);
    letter-spacing: 0.02em;
}

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

.btn-primary:hover {
    background-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

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

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
}

/* Cards */
.card {
    background-color: var(--color-text-light);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
    padding: var(--padding-lg);
    transition: transform var(--transition-speed) var(--transition-timing-function), box-shadow var(--transition-speed) var(--transition-timing-function);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

/* Glassmorphism Effect */
.glassmorphism {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-glass);
    border-radius: var(--border-radius-md);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: background-color var(--transition-speed) var(--transition-timing-function), backdrop-filter var(--transition-speed) var(--transition-timing-function);
    padding: var(--padding-sm) 0;
}

.header-transparent {
    background-color: transparent;
    backdrop-filter: blur(0);
}

.header-scrolled {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-glass);
}

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

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

.header .nav-links a {
    margin-left: var(--margin-lg);
    font-weight: 500;
    color: var(--color-primary);
    padding: 0.5rem 0;
    position: relative;
}

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

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

/* Footer */
.footer {
    background-color: var(--color-footer-bg);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--padding-lg) 0;
    font-size: 0.9rem;
}

.footer h4 {
    color: var(--color-secondary);
    margin-bottom: var(--margin-sm);
    font-size: 1.2rem;
    font-weight: 600;
}

.footer a {
    color: rgba(255, 255, 255, 0.7);
    display: block;
    margin-bottom: 0.5rem;
}

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

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

.footer .social-icons a {
    display: inline-block;
    margin-right: var(--margin-sm);
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer .social-icons a:hover {
    color: var(--color-secondary);
    transform: translateY(-2px);
}

.footer .copyright {
    text-align: center;
    margin-top: var(--margin-lg);
    padding-top: var(--padding-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.85rem;
}

/* Sections Backgrounds */
.section-bg-1 { background-color: var(--color-section-bg-1); }
.section-bg-2 { background-color: var(--color-section-bg-2); }
.section-bg-3 { background-color: var(--color-section-bg-3); }
.section-bg-4 { background-color: var(--color-section-bg-4); }

/* Forms */
input[type="text"],
input[type="email"],
input[type="password"],
textarea {
    width: 100%;
    padding: var(--padding-sm);
    margin-bottom: var(--margin-md);
    border: 1px solid var(--color-secondary);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    color: var(--color-text-dark);
    transition: border-color var(--transition-speed) var(--transition-timing-function), box-shadow var(--transition-speed) var(--transition-timing-function);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-button);
    box-shadow: 0 0 0 3px rgba(76, 179, 106, 0.2); /* Soft focus ring */
}

textarea {
    min-height: 120px;
    resize: vertical;
}

/* Placeholder styling */
::placeholder {
    color: rgba(var(--color-text-dark), 0.6);
    opacity: 1; /* Firefox fix */
}

/* AOS (Animate On Scroll) Integration - assuming AOS library is used */
[data-aos] {
    opacity: 0;
    transition-property: transform, opacity;
}

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

/* Specific AOS animations */
[data-aos="fade-up"] {
    transform: translateY(20px);
}
[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-right"] {
    transform: translateX(-20px);
}
[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}

[data-aos="fade-left"] {
    transform: translateX(20px);
}
[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

/* Media Queries */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.7rem; }

    .header .nav-links {
        display: none; /* Hide nav links on small screens, usually replaced by a hamburger menu */
    }

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

    .footer .social-icons {
        margin-top: var(--margin-md);
        text-align: center;
    }

    .footer .social-icons a {
        margin: 0 var(--margin-sm);
    }
}

@media (max-width: 480px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.6rem; }
    h3 { font-size: 1.4rem; }
    
    .container {
        padding-left: var(--padding-sm);
        padding-right: var(--padding-sm);
    }
    
    .btn {
        padding: var(--padding-sm) var(--padding-md);
        font-size: 0.9rem;
    }
}


/* 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;
    }
}