body {
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    background: radial-gradient(circle at top, #0f172a, #020617);
    color: #e2e8f0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0;
    min-height: 100vh;
    padding: 2rem;
    overflow-x: hidden;
    transition: background 0.5s ease;
}

h1 {
    font-size: 2rem;
    color: #ff5b0e;
    letter-spacing: 1px;
    text-shadow: 0 0 10px #ff5b0e;
    margin-bottom: 1rem;
    text-align: center;
}

h2 {
    font-size: 1.2rem;
    color: #ff5b0e;
    margin-top: 0.5rem;
    text-align: center;
}

input {
    width: 90%;
    max-width: 320px;
    padding: 0.7rem 1rem;
    font-size: 1rem;
    margin-top: 1.2rem;
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid #ff5b0e;
    border-radius: 20px;
    color: #e2e8f0;
    outline: none;
    transition: all 0.3s ease;
    text-align: center;
}

input:focus {
    border-color: #ff2c07;
    box-shadow: 0 0 12px #ff2c07;
}

button {
    padding: 0.7rem 1.5rem;
    margin-top: 1.5rem;
    cursor: pointer;
    background: linear-gradient(90deg, #ff5b0e, #ff0707);
    color: white;
    border: none;
    border-radius: 20px;
    font-size: 1.05rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    box-shadow: 0 0 15px #ff2c07;
    transition: all 0.3s ease;
}

button:hover {
    transform: scale(1.05);
    box-shadow: 0 0 25px #ff0707;
}

.result {
    margin-top: 2rem;
    font-size: 1.1rem;
    background: #ff5a0e50;
    padding: 1.2rem;
    border-radius: 5px;
    box-shadow: 0 0 20px #ff2c07;
    min-width: 260px;
    text-align: center;
    color: #e2e8f0;
    border: 2px solid #ff0707;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.result:hover {
    transform: translateY(-4px);
    box-shadow: 0 0 30px rgba(56, 189, 248, 0.25);
}

@media (max-width: 600px) {
    body {
        padding: 1.5rem;
    }

    h1 {
        font-size: 1.6rem;
    }

    input, button {
        width: 100%;
        max-width: none;
    }

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