body {
    background: #f7f7f7;
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    margin: 0;
}

.container {
    max-width: 520px;
    width: calc(100% - 24px);
    margin: 48px auto;
    padding: 20px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

input, select {
    width: 100%;
    margin: 6px 0 15px 0;
    padding: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    font-size: 15px;
}

.btn {
    width: 100%;
    background: linear-gradient(120deg, #4CAF50, #2fa05a);
    padding: 12px;
    color: white;
    border: none;
    font-size: 16px;
    border-radius: 10px;
    cursor: pointer;
    transition: transform .1s ease, box-shadow .1s ease;
    box-shadow: 0 8px 16px rgba(76, 175, 80, 0.25);
}

.btn:hover {
    background: linear-gradient(120deg, #43a047, #278d4f);
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

@media (max-width: 576px) {
    .container {
        margin: 24px auto;
        padding: 16px;
    }

    input, select {
        font-size: 14px;
    }
}