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

/* Full-screen body with gradient */
body {
    height: 100vh;
    background: linear-gradient(135deg, #1d2671, #c33764);
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Segoe UI', sans-serif;
    padding: 20px;
}

/* Main container */
.container {
    background: #ffffff;
    padding: 35px 25px;
    border-radius: 18px;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
    text-align: center;
    width: 100%;
    max-width: 420px;
    animation: fadeIn 1s ease-in-out;
}

/* Headings */
h1 {
    font-size: 28px;
    color: #1d2671;
    margin-bottom: 10px;
}

p {
    font-size: 16px;
    color: #4a4a4a;
    margin-bottom: 25px;
}

/* Input styling */
input[type="tel"] {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    border: 2px solid #c33764;
    border-radius: 10px;
    margin-bottom: 25px;
    outline: none;
    transition: 0.3s ease;
}

input[type="tel"]:focus {
    border-color: #ff4e94;
    box-shadow: 0 0 5px #ff4e94;
}

/* Plan buttons */
.plans {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

button {
    background: linear-gradient(to right, #ff4e94, #ff6c4e);
    color: #fff;
    border: none;
    padding: 14px;
    font-size: 17px;
    font-weight: bold;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button:hover {
    transform: scale(1.03);
    box-shadow: 0 4px 12px rgba(255, 78, 148, 0.4);
}

/* Responsive layout */
@media (max-width: 500px) {
    .container {
        padding: 25px 20px;
    }

    h1 {
        font-size: 24px;
    }

    button {
        font-size: 16px;
        padding: 12px;
    }
}

/* Smooth fade-in */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}