:root {
    --primary-blue: #1e40af;
    --accent-orange: #f97316;
    --dark-slate: #0f172a;
    --light-bg: #f8fafc;
    --border-color: #e2e8f0;
    --success-green: #15803d;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--light-bg);
    color: var(--dark-slate);
    line-height: 1.6;
}

/* Header & Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background: #ffffff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    box-sizing: border-box;
    z-index: 1000;
}

.brand-logo {
    display: flex;
    flex-direction: column;
}

.brand-logo .title {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--primary-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.brand-logo .subtitle {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-orange);
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-slate);
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--primary-blue);
}

.btn-nav-accent {
    background-color: var(--primary-blue);
    color: #ffffff !important;
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 700 !important;
}

/* Section Hero */
.hero-section {
    margin-top: 70px;
    background: linear-gradient(135deg, #0f172a 0%, #1e40af 100%);
    color: #ffffff;
    padding: 80px 20px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-tag {
    background: rgba(249, 115, 22, 0.2);
    color: var(--accent-orange);
    border: 1px solid var(--accent-orange);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    display: inline-block;
    margin-bottom: 15px;
}

.hero-title {
    font-size: 2.3rem;
    font-weight: 800;
    margin: 0 0 15px 0;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: #cbd5e1;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 700;
    text-decoration: none;
    text-transform: uppercase;
    font-size: 0.88rem;
    transition: transform 0.2s, opacity 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-orange {
    background-color: var(--accent-orange);
    color: #ffffff;
}

.btn-outline {
    border: 2px solid #ffffff;
    color: #ffffff;
}

/* Container Général */
.container {
    max-width: 1100px;
    margin: 60px auto;
    padding: 0 20px;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--dark-slate);
    text-transform: uppercase;
    margin: 0 0 10px 0;
}

.section-header p {
    color: #64748b;
    margin: 0;
}

/* Card Lead Magnet (Drive) */
.lead-card {
    background: #ffffff;
    border-radius: 12px;
    border: 2px solid var(--accent-orange);
    padding: 35px;
    box-shadow: 0 10px 25px rgba(249, 115, 22, 0.08);
}

.lead-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
    box-sizing: border-box;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
}

.btn-submit-lead {
    background-color: var(--accent-orange);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 6px;
    font-weight: 800;
    cursor: pointer;
    text-transform: uppercase;
    width: 100%;
    margin-top: 15px;
}

/* Cards Grid (Formules & Cours) */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.card {
    background: #ffffff;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 25px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
}

.card h3 {
    color: var(--primary-blue);
    margin-top: 0;
    font-size: 1.25rem;
}

.card-price {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-orange);
    margin: 10px 0;
}

.card-features {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.card-features li {
    padding: 8px 0;
    border-bottom: 1px dashed var(--border-color);
    font-size: 0.9rem;
}

.card-features li::before {
    content: "✓ ";
    color: var(--success-green);
    font-weight: bold;
}

.footer {
    background: var(--dark-slate);
    color: #94a3b8;
    padding: 40px 20px;
    text-align: center;
    font-size: 0.88rem;
}

.footer a {
    color: #ffffff;
    text-decoration: none;
}