* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #191919;
}

.login-container {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    width: 100%;
    max-width: 380px;
}

.lock-icon { text-align: center; font-size: 2rem; margin-bottom: 0.5rem; }

h1 { margin-bottom: 1.2rem; color: #333; font-size: 1.4rem; text-align: center; }

.input-group { margin-bottom: 1rem; }

label { display: block; margin-bottom: 0.3rem; color: #555; }

input {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

button {
    width: 100%;
    padding: 10px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    margin-top: 10px;
}

button:hover:not(:disabled) { background: #5a67d8; }
button:disabled { opacity: 0.6; cursor: not-allowed; }

.error {
    color: #e53e3e;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    text-align: center;
    display: none;
}

.error.show { display: block; }