:root {
    --blue-main: #1f2f4d;   /* Bleu du logo */
    --green-main: #6aa84f;  /* Vert du logo */
    --green-light: #8fce6a;
    --bg-light: #f4f7fb;
    --card-white: #ffffff;
    --text-dark: #24324a;
    --text-muted: #6b7a90;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    min-height: 100vh;
    background: linear-gradient(135deg, #ffffff, var(--bg-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dark);
}

.welcome-container {
    background: var(--card-white);
    border-radius: 22px;
    padding: 60px 48px;
    text-align: center;
    width: 92%;
    max-width: 480px;
    box-shadow: 0 30px 70px rgba(31, 47, 77, 0.15);
    animation: fadeIn 1.1s ease-in-out;
    border-top: 5px solid var(--green-main);
}

@keyframes fadeIn {
    from {
    opacity: 0;
    transform: translateY(35px);
    }
    to {
    opacity: 1;
    transform: translateY(0);
    }
}

.logo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--green-main), var(--green-light));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px auto;
    font-size: 42px;
    font-weight: 700;
    color: #ffffff;
    box-shadow: 0 14px 38px rgba(106, 168, 79, 0.45);
    letter-spacing: 2px;
}

h1 {
    font-size: 32px;
    margin-bottom: 6px;
    color: var(--blue-main);
}

h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--green-main);
    margin-bottom: 22px;
    letter-spacing: 1.2px;
}

p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-muted);
    margin-bottom: 36px;
}

.btn {
    display: inline-block;
    padding: 16px 44px;
    border-radius: 40px;
    background: linear-gradient(135deg, var(--blue-main), #2f4672);
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    letter-spacing: 0.6px;
    transition: all 0.35s ease;
    box-shadow: 0 12px 32px rgba(31, 47, 77, 0.35);
}

.btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 45px rgba(31, 47, 77, 0.5);
}

.footer-text {
    margin-top: 32px;
    font-size: 12px;
    color: #9aa7b8;
}

@media (max-width: 480px) {
    h1 {
    font-size: 26px;
    }

    p {
    font-size: 14px;
    }
}