* {
    box-sizing: border-box;
    font-family: 'Segoe UI', sans-serif;
}

body {
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
}

.card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

h2 {
    color: #1a73e8;
    margin-top: 0;
    text-align: center;
}

p {
    text-align: center;
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 25px;
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #333;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
}

.btn {
    width: 100%;
    padding: 12px;
    background-color: #1a73e8;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

.btn:hover {
    background-color: #1557b0;
}

.alert {
    background-color: #ffebee;
    color: #c62828;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 0.85rem;
    text-align: center;
    border: 1px solid #ef9a9a;
}