/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    color: #ffffff;
    text-align: center;
    padding: 1rem;
}

header {
    padding: 2rem 1rem;
    font-family: Arial, Helvetica, sans-serif;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

header h2 {
    font-size: 2.25rem;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.1rem;
    opacity: 0.8;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem 1rem;
}

.card {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 16px;
    backdrop-filter: blur(10px);
    max-width: 600px;
    width: 100%;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.card h2 {
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.card p {
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.email-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.email-form input {
    padding: 0.75rem;
    border-radius: 8px;
    border: none;
    font-size: 1rem;
}

.email-form button {
    padding: 0.75rem;
    border-radius: 8px;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    background: #00c6ff;
    color: #000;
    font-weight: bold;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.email-form button:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

footer {
    padding: 1rem;
    font-size: 0.9rem;
    opacity: 0.7;
    font-family: Arial, Helvetica, sans-serif;
}

/* Tablet */
@media (min-width: 600px) {
    header h1 {
        font-size: 3rem;
    }

    .card {
        padding: 3rem;
    }
}

/* Desktop */
@media (min-width: 1024px) {
    body {
        padding: 2rem;
    }

    header h1 {
        font-size: 3.5rem;
    }

    .card h2 {
        font-size: 2rem;
    }
}