:root {
    --primary-color: #2C3E50;
    /* Deep Blue - Trust */
    --secondary-color: #88B04B;
    /* Sage Green - Growth */
    --accent-color: #D4AF37;
    /* Warm Gold - Ethics */
    --text-color: #333333;
    --bg-color: #F9F9F9;
    --white: #FFFFFF;
    --font-main: 'Inter', sans-serif;
    --transition-speed: 0.3s;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(10px);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 1px;
}

nav ul {
    display: flex;
    gap: 2rem;
}

nav a {
    font-weight: 500;
    color: var(--primary-color);
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--secondary-color);
    transition: width var(--transition-speed);
}

nav a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    height: 75vh;
    background: linear-gradient(135deg, var(--primary-color), #34495e);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 5%;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1497366216548-37526070297c?auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
    opacity: 0.15;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    animation: fadeInUp 1s ease-out;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.hero p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    font-weight: 300;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--secondary-color);
    color: var(--white);
    border-radius: 50px;
    font-weight: 600;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(136, 176, 75, 0.4);
}

/* Sections General */
section {
    padding: 5rem 5%;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.section-title .line {
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 0 auto;
    border-radius: 2px;
}

/* Presentation */
.presentation {
    background-color: var(--white);
}

.presentation-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    color: #555;
}

/* Methodology */
.methodology {
    background-color: #f0f4f8;
}

.method-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.method-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition-speed);
    text-align: center;
}

.method-card:hover {
    transform: translateY(-10px);
}

.method-icon {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.method-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

/* Counsel (Conseil) */
.counsel {
    background-color: var(--white);
}

.counsel-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.counsel-text {
    flex: 1;
    min-width: 300px;
}

.counsel-image {
    flex: 1;
    min-width: 300px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.counsel-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* Team */
.team {
    background-color: var(--primary-color);
    color: var(--white);
}

.team .section-title h2 {
    color: var(--white);
}

.team-grid {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.team-member {
    text-align: center;
    max-width: 300px;
}

.member-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background-color: #ddd;
    margin: 0 auto 1.5rem;
    overflow: hidden;
    border: 4px solid var(--accent-color);
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-member h3 {
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.team-member p {
    opacity: 0.8;
}

/* References */
.references {
    background-color: var(--white);
    text-align: center;
}

.ref-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 3rem;
    margin-top: 2rem;
}

.ref-logo {
    height: 60px;
    opacity: 0.6;
    transition: opacity var(--transition-speed);
    filter: grayscale(100%);
}

.ref-logo:hover {
    opacity: 1;
    filter: grayscale(0%);
}

/* Contact */
.contact {
    background-color: #f9f9f9;
}

.contact-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    padding: 3rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.contact-form .form-group {
    margin-bottom: 1.5rem;
}

.contact-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
    transition: border-color var(--transition-speed);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-speed);
}

.submit-btn:hover {
    background-color: #34495e;
}

/* Footer */
footer {
    background-color: #222;
    color: #aaa;
    padding: 3rem 5%;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-links a {
    margin-left: 1.5rem;
}

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

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

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

    .mobile-menu-btn {
        display: block;
        z-index: 1001;
    }

    nav ul {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: var(--white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: right var(--transition-speed);
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    }

    nav ul.active {
        right: 0;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links a {
        margin: 0 0.75rem;
    }
}