* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, sans-serif;
}

body {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #f0f2f5;
    padding: 20px;
}

.container {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 600px;
}

h1 {
    color: #1a1a1a;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    text-align: center;
}

.input-group {
    display: flex;
    gap: 10px;
    flex-direction: column;
}

input {
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    width: 100%;
    transition: border-color 0.3s ease;
}

input:focus {
    outline: none;
    border-color: #0078d4;
}

button {
    background: #0078d4;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s ease;
    width: 100%;
}

button:hover {
    background: #006cbd;
}

.update-time {
    color: #666;
    font-size: 0.9rem;
    text-align: center;
    margin-top: 8px;
}