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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* HERO Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 80px 20px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.hero .tagline {
    font-size: 1.5rem;
    margin-bottom: 20px;
    opacity: 0.95;
}

.hero-description {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 30px;
    line-height: 1.8;
}

.hero-note {
    margin-top: 15px;
    font-size: 0.95rem;
    opacity: 0.9;
}

/* CTA Buttons */
.cta-primary {
    display: inline-block;
    background: white;
    color: var(--primary-color);
    padding: 15px 40px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: var(--shadow);
}

.cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

.cta-large {
    font-size: 1.3rem;
    padding: 20px 50px;
}

/* Section Générique */
section {
    padding: 60px 20px;
}

section h2 {
    font-size: 2.2rem;
    margin-bottom: 30px;
    text-align: center;
    color: var(--text-dark);
}

.section-intro {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 40px;
}

/* Problème Section */
.problem-section {
    background: var(--bg-light);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.problem-item {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
}

.problem-item .icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 15px;
}

.problem-item p {
    font-size: 1.05rem;
    color: var(--text-dark);
}

.problem-result {
    background: white;
    padding: 30px;
    border-radius: 10px;
    margin-top: 40px;
    border-left: 5px solid var(--primary-color);
}

.problem-result ul {
    list-style: none;
    margin-top: 15px;
}

.problem-result ul li {
    padding: 8px 0;
    font-size: 1.1rem;
}

/* Solution Section */
.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.solution-item {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
}

.solution-item h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.solution-promise {
    text-align: center;
    font-size: 1.3rem;
    margin-top: 50px;
    padding: 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 10px;
    line-height: 1.8;
}

/* Exemples Section */
.examples-section {
    background: var(--bg-light);
}

.example-card {
    background: white;
    padding: 30px;
    margin: 25px 0;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.example-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.message-example {
    background: var(--bg-light);
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    font-style: italic;
    color: var(--text-dark);
}

.examples-note {
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: 30px;
    color: var(--primary-color);
}

/* Target Section */
.target-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.target-item {
    background: var(--bg-light);
    padding: 40px;
    text-align: center;
    border-radius: 10px;
}

.target-item .icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 15px;
}

.target-item h3 {
    font-size: 1.2rem;
    color: var(--text-dark);
}

.target-benefits {
    background: white;
    padding: 30px;
    border-radius: 10px;
    margin-top: 40px;
    box-shadow: var(--shadow);
}

.target-benefits ul {
    list-style: none;
    margin-top: 15px;
}

.target-benefits ul li {
    padding: 8px 0;
    font-size: 1.05rem;
}

/* Beta Section */
.beta-section {
    background: var(--bg-light);
    text-align: center;
}

.beta-benefits {
    max-width: 600px;
    margin: 30px auto;
    text-align: left;
}

.beta-benefits ul {
    list-style: none;
    margin-top: 15px;
}

.beta-benefits ul li {
    padding: 10px 0;
    font-size: 1.1rem;
}

.beta-urgency {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-top: 20px;
}

/* Formulaire Beta */
.form-section {
    background: var(--bg-white);
}

.beta-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-light);
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.beta-form button {
    width: 100%;
    background: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    margin-top: 10px;
}

.beta-form button:hover {
    background: var(--primary-dark);
}

.form-note {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 15px;
}

/* Vision Section */
.vision-section {
    background: var(--bg-light);
    text-align: center;
}

.vision-section p {
    max-width: 800px;
    margin: 20px auto;
    font-size: 1.1rem;
    line-height: 1.8;
}

.vision-promise {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-top: 30px;
}

/* CTA Final */
.final-cta {
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.final-cta .cta-primary {
    background: white;
    color: var(--primary-color);
}

/* Footer */
footer {
    background: var(--text-dark);
    color: white;
    text-align: center;
    padding: 30px 20px;
}

.footer-links {
    margin-top: 15px;
}

.footer-links a {
    color: white;
    text-decoration: none;
    margin: 0 10px;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero .tagline {
        font-size: 1.2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    section h2 {
        font-size: 1.8rem;
    }
    
    .problem-grid,
    .solution-grid,
    .target-grid {
        grid-template-columns: 1fr;
    }
}