:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --text-color: #1f2937;
    --light-bg: #f3f4f6;
    --white: #ffffff;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header & Navigation */
.header {
    background: var(--white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo::before {
    content: '';
    display: none; /* Suppression de l'icône bizarre */
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(to right, #f0f9ff, #e0f2fe);
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.subtitle {
    font-size: 1.25rem;
    color: #4b5563;
    margin-bottom: 2rem;
}

/* Buttons */
.cta-button {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.3s;
}

.cta-button:hover {
    background: var(--secondary-color);
}

.header .cta-button {
    color: #fff !important;
}

/* Sections */
section {
    padding: 4rem 0;
}

section h2 {
    text-align: center;
    font-size: 2.25rem;
    margin-bottom: 3rem;
}

/* Grid Layout */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* Cards */
.card, .feature-card, .security-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.card:hover, .feature-card:hover, .security-card:hover {
    transform: translateY(-5px);
}

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

/* Contact Form */
.contact {
    background: var(--light-bg);
    padding: 6rem 0;
}

.contact h2 {
    margin-bottom: 1rem;
}

.contact > .container > p {
    text-align: center;
    color: #4b5563;
    margin-bottom: 3rem;
}

.contact-form {
    max-width: 600px;
    margin: 2rem auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background: var(--white);
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.form-group {
    position: relative;
}

.form-group i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #6b7280;
    font-size: 1.25rem;
}

.contact-form input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid #e5e7eb;
    border-radius: 0.75rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #f9fafb;
}

.contact-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.contact-form input::placeholder {
    color: #9ca3af;
}

.contact-form button {
    margin-top: 1rem;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.contact-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.contact-form button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Footer */
.footer {
    background: var(--text-color);
    color: var(--white);
    padding: 3rem 0;
}

.footer-content {
    text-align: center;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    section {
        padding: 3rem 0;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
}