:root {
    --primary-color: #00e676; /* Vert WhatsApp / Premium */
    --bg-dark: #121212;
    --card-bg: #1e1e1e;
    --text-color: #ffffff;
    --accent-gold: #d4af37; /* Pour le côté premium du logo */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-color);
    line-height: 1.6;
}

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

header {
    background: linear-gradient(180deg, #1f1f1f 0%, var(--bg-dark) 100%);
    padding: 40px 0;
    border-bottom: 2px solid #2a2a2a;
}

.logo {
    max-width: 180px;
    margin-bottom: 15px;
    border-radius: 10px;
}

h1 {
    font-size: 2.5rem;
    letter-spacing: 2px;
    color: var(--text-color);
}

.subtitle {
    color: var(--accent-gold);
    font-weight: bold;
    font-size: 0.9rem;
    letter-spacing: 4px;
}

.intro {
    margin: 40px 0;
}

.intro h2 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

/* Grille de prix */
.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.plan-card {
    background-color: var(--card-bg);
    border: 1px solid #333;
    border-radius: 12px;
    padding: 30px 20px;
    transition: transform 0.3s ease, border-color 0.3s ease;
    position: relative;
}

.plan-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-gold);
}

.plan-card.popular {
    border: 2px solid var(--accent-gold);
}

.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--accent-gold);
    color: #000;
    padding: 2px 12px;
    font-size: 0.8rem;
    font-weight: bold;
    border-radius: 20px;
    text-transform: uppercase;
}

.plan-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.price {
    font-size: 1.3rem;
    color: var(--accent-gold);
    font-weight: bold;
    margin-bottom: 15px;
}

.btn-select {
    background-color: transparent;
    color: var(--text-color);
    border: 2px solid var(--text-color);
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    width: 100%;
    margin-top: 20px;
    transition: all 0.3s ease;
}

.btn-select:hover {
    background-color: var(--text-color);
    color: var(--bg-dark);
}

/* Section Panier */
.cart-section {
    margin: 50px auto;
    max-width: 600px;
    transition: all 0.5s ease;
}

.hidden {
    display: none;
}

.cart-box {
    background-color: #252525;
    border-radius: 12px;
    padding: 30px;
    border: 1px solid #444;
}

.cart-box h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.btn-whatsapp {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: bold;
    border-radius: 30px;
    cursor: pointer;
    margin-top: 20px;
    width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(0, 230, 118, 0.3);
    transition: background 0.3s ease;
}

.btn-whatsapp:hover {
    background-color: #00c853;
}

footer {
    text-align: center;
    padding: 40px;
    color: #666;
    font-size: 0.9rem;
    border-top: 1px solid #2a2a2a;
    margin-top: 60px;
}