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

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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #eaeaea;
}

.container {
    padding: 24px;
}

.card {
    max-width: 780px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 48px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    animation: float 6s ease-in-out infinite;
}

.logo {
    font-size: 2.6rem;
    font-weight: 600;
    text-align: center;
    letter-spacing: 0.5px;
}

.tagline {
    text-align: center;
    font-size: 1rem;
    color: #b6d4e7;
    margin-top: 8px;
}

.divider {
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, #6dd5ed, #2193b0);
    margin: 32px auto;
    border-radius: 2px;
    animation: expand 1.2s ease forwards;
}

.message {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 20px;
    color: #e3eaf0;
}

.closing {
    margin-top: 32px;
    font-size: 1.1rem;
    text-align: center;
    font-weight: 500;
    color: #ffffff;
}

.signature {
    display: block;
    margin-top: 24px;
    text-align: center;
    font-size: 0.95rem;
    color: #9fc9de;
}

/* Animations */

.fade-in {
    animation: fadeIn 1.4s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes expand {
    from {
        width: 0;
    }
    to {
        width: 80px;
    }
}

@keyframes float {
    0% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-6px);
    }
    100% {
        transform: translateY(0);
    }
}

/* Responsive */

@media (max-width: 768px) {
    .card {
        padding: 32px 24px;
    }

    .logo {
        font-size: 2rem;
    }

    .message {
        font-size: 1rem;
    }
}