body.error-page {
    font-family: "Open Sans", Roboto, Arial, sans-serif;
    background-color: #fafafa;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    margin: 0;
    padding-top: 8vh;
    box-sizing: border-box;
}

.error-box {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 1.8rem 2.5rem;
    max-width: 400px;
    text-align: center;
    box-sizing: border-box;
}

.error-box h1 {
    font-size: 2rem;
    color: #e52b2b;
    margin: 0 0 0.5rem 0;
    letter-spacing: 0.5px;
}

.error-box h2 {
    font-size: 1.3rem;
    color: #666;
    margin: 0.3rem 0 1rem 0;
}

.error-box p {
    font-size: 0.95rem;
    color: #444;
    margin: 0 0 1.5rem 0;
}

.error-box .btn,
.error-box input[type="submit"] {
    background: #1976d2;
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 0.6rem 1.4rem;
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: background 0.2s;
    line-height: normal;
}

.error-box .btn:hover,
.error-box input[type="submit"]:hover {
    background: #0056d6;
}

/* Password strength meter (zxcvbn) */
.form-group.password-group {
    position: relative;
}
.password-strength-container {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;

    margin-top: 4px;
    height: auto;

    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease;
    pointer-events: none;
}

.password-strength-container.active {
    opacity: 1;
    visibility: visible;
}

.password-strength-bar {
    height: 6px;
    border-radius: 3px;
    background-color: #e0e0e0;
    transition: width 0.25s ease, background-color 0.25s ease;
}

.password-strength-label {
    font-size: 13px;
    font-weight: 500;
    margin-top: 4px;
}