@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
    --bg: #f8fafc;
    --card: #ffffff;
    --muted: #475569;
    --text: #0f172a;
    --primary: #0ea5e9;
    --secondary: #6366f1;
    --accent: #f97316;
    --border: rgba(15,23,42,0.1);
    --shadow: 0 4px 20px rgba(15,23,42,0.06);
    --success: #10b981;
}

* { 
    box-sizing: border-box; 
}

body {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    background: radial-gradient(circle at 20% 15%, rgba(99,102,241,0.08), transparent 35%),
                radial-gradient(circle at 80% 0%, rgba(14,165,233,0.08), transparent 32%),
                var(--bg);
    color: var(--text);
    scroll-behavior: smooth;
    font-size: 16px;
    line-height: 1.7;
}

a { 
    color: inherit; 
    text-decoration: none; 
}

.layout {
    max-width: 1200px;
    margin: 0 auto;
    padding: 28px 20px 80px;
}

/* Navigation améliorée avec transparence - toujours visible */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 14px 18px;
    margin-bottom: 26px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 14px;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    box-shadow: 0 8px 32px rgba(31, 38, 135, 0.15);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav.scrolled {
    background: rgba(255,255,255,0.95);
    border-color: rgba(15,23,42,0.1);
    padding: 10px 18px;
    box-shadow: 0 2px 15px rgba(15,23,42,0.12);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.3px;
    color: var(--text);
}

.badge {
    padding: 7px 12px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    font-weight: 700;
    font-size: 0.85rem;
    box-shadow: 0 4px 12px rgba(14,165,233,0.25);
    position: relative;
    overflow: hidden;
}

.badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.badge:hover::before {
    left: 100%;
}

.nav-links {
    display: flex;
    gap: 18px;
    align-items: center;
    flex-wrap: wrap;
}

.nav-link {
    color: var(--muted);
    font-weight: 500;
    font-size: 1rem;
    padding: 9px 12px;
    border-radius: 10px;
    transition: all 0.2s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text);
    background: rgba(14,165,233,0.08);
    transform: translateY(-1px);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 70%;
}

/* Buttons */
.btn {
    padding: 14px 24px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(14,165,233,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(14,165,233,0.4);
}

.btn-secondary {
    background: var(--card);
    color: var(--text);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.btn-secondary:hover {
    background: #f1f5f9;
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-ghost:hover {
    background: rgba(14,165,233,0.1);
    transform: translateY(-1px);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 80px 24px;
    margin-bottom: 40px;
}

.pill {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(14,165,233,0.1);
    color: var(--primary);
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 24px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(14,165,233,0.3); }
    70% { box-shadow: 0 0 0 10px rgba(14,165,233,0); }
    100% { box-shadow: 0 0 0 0 rgba(14,165,233,0); }
}

.hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.2;
    margin: 0 0 24px;
    background: linear-gradient(135deg, var(--text), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: var(--muted);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Sections */
.section {
    margin-top: 80px;
}

.section h2 {
    text-align: center;
    font-size: 2.2rem;
    font-weight: 700;
    margin: 0 0 40px;
    color: var(--text);
}

/* Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 20px;
}

.card {
    background: var(--card);
    padding: 32px 24px;
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    text-align: center;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(15,23,42,0.12);
}

.icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.card h3 {
    margin: 0 0 16px;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text);
}

.card p {
    margin: 0;
    color: var(--muted);
    font-size: 1rem;
    line-height: 1.6;
}

/* Pricing */
.pricing {
    position: relative;
}

.pricing-card {
    background: var(--card);
    padding: 40px 30px;
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(15,23,42,0.12);
}

.pricing-card.featured {
    border: 2px solid var(--primary);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.popular-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: linear-gradient(135deg, var(--accent), #f59e0b);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.8rem;
    box-shadow: 0 4px 12px rgba(249,115,22,0.3);
}

.pricing-card h3 {
    margin: 0 0 20px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}

.price {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 0 0 30px;
    color: var(--primary);
}

.price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--muted);
}

.pricing-card ul {
    list-style: none;
    padding: 0;
    margin: 0 0 30px;
    text-align: left;
}

.pricing-card li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.95rem;
}

.pricing-card li:last-child {
    border-bottom: none;
}

.pricing-card li::before {
    content: "✓";
    color: var(--success);
    font-weight: bold;
    display: inline-block;
    width: 20px;
}

/* FAQ */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.faq-item {
    background: var(--card);
    padding: 28px 24px;
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.faq-item h3 {
    margin: 0 0 16px;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text);
}

.faq-item p {
    margin: 0;
    color: var(--muted);
    font-size: 1rem;
    line-height: 1.6;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.contact-card {
    background: var(--card);
    padding: 32px;
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow);
}

.contact-card h3 { 
    margin: 0 0 12px; 
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
}

.contact-card p { 
    margin: 0 0 10px; 
    color: var(--muted);
    font-size: 1rem;
    line-height: 1.6;
}

.contact form {
    display: grid;
    gap: 14px;
    padding: 32px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: var(--card);
    box-shadow: var(--shadow);
}

input, textarea {
    width: 100%;
    padding: 14px 16px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #ffffff;
    color: var(--text);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(14,165,233,0.1);
}

textarea { 
    min-height: 130px; 
    resize: vertical; 
}

/* Footer */
footer {
    margin-top: 80px;
    padding: 24px 0;
    color: var(--muted);
    font-size: 1rem;
    text-align: center;
    line-height: 1.6;
}

/* Responsive */
@media (max-width: 720px) {
    body { font-size: 15px; }
    .hero { padding: 50px 24px; }
    .hero h1 { font-size: 2.2rem; line-height: 1.2; }
    .hero p { font-size: 1.05rem; }
    .nav { 
        position: sticky; 
        flex-wrap: wrap; 
        padding: 12px 16px; 
        background: rgba(255,255,255,0.95);
    }
    .nav-links { 
        width: 100%; 
        justify-content: space-between; 
    }
    .section h2 { font-size: 1.8rem; }
    .section { margin-top: 60px; }
    .btn { padding: 13px 20px; font-size: 0.95rem; }
    .grid, .pricing, .faq-grid, .contact-grid { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; }
    .pricing-card.featured {
        transform: scale(1);
    }
    .pricing-card.featured:hover {
        transform: scale(1) translateY(-5px);
    }
}