* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Courier New', Courier, monospace;
}

body {
    background-color: #000000;
    color: #ffffff;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.vault-gate-container {
    width: 90%;
    max-width: 500px;
    background-color: #111111;
    border: 3px solid #ffd700;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.1);
}

.vault-logo-icon {
    font-size: 3rem;
    margin-bottom: 10px;
}

.vault-header h1 {
    font-size: 1.8rem;
    color: #ffd700;
    letter-spacing: 1px;
    margin-bottom: 5px;
}

.vault-status {
    font-size: 0.8rem;
    color: #aaaaaa;
    letter-spacing: 2px;
    margin-bottom: 30px;
}

.vault-instruction {
    font-size: 0.9rem;
    color: #dddddd;
    margin-bottom: 20px;
    line-height: 1.4;
}

.vault-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.vault-form input[type="password"] {
    background-color: #000000;
    border: 2px solid #ffd700;
    color: #ffffff;
    padding: 14px;
    font-size: 1.1rem;
    text-align: center;
    letter-spacing: 3px;
}

.vault-form input[type="password"]:focus {
    outline: none;
    background-color: #1a1a1a;
    border-color: #ffffff;
}

.submit-btn {
    background-color: #ffd700;
    color: #000000;
    border: 2px solid #ffd700;
    padding: 14px;
    font-weight: bold;
    text-transform: uppercase;
    cursor: pointer;
    letter-spacing: 1px;
    transition: all 0.2s ease-in-out;
}

.submit-btn:hover {
    background-color: #000000;
    color: #ffd700;
}

.error-text {
    color: #ff3333;
    font-size: 0.8rem;
    margin-top: 15px;
    font-weight: bold;
    letter-spacing: 1px;
}