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

body {
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(135deg, #101827, #263b58);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: #ffffff;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: #ffffff;
    color: #172033;
    padding: 40px 32px;
    border-radius: 18px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.lock-icon {
    font-size: 42px;
    text-align: center;
    margin-bottom: 18px;
}

h1 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 10px;
}

.subtitle {
    text-align: center;
    color: #697386;
    margin-bottom: 30px;
    line-height: 1.5;
}

label {
    display: block;
    font-weight: bold;
    font-size: 14px;
    margin-bottom: 8px;
}

input {
    width: 100%;
    padding: 14px;
    border: 1px solid #d5dbe5;
    border-radius: 9px;
    font-size: 16px;
    margin-bottom: 20px;
    outline: none;
}

input:focus {
    border-color: #3478f6;
    box-shadow: 0 0 0 3px rgba(52, 120, 246, 0.12);
}

button {
    width: 100%;
    padding: 15px;
    background: #2563eb;
    color: #ffffff;
    border: none;
    border-radius: 9px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
}

button:hover {
    background: #1d4ed8;
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

#message {
    color: #dc2626;
    font-size: 14px;
    margin-bottom: 15px;
    min-height: 18px;
}

.footer-text {
    text-align: center;
    color: #8993a4;
    font-size: 12px;
    margin-top: 25px;
}