.fv-demo-container {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-medium);
    background: var(--card-bg);
    padding: 28px;
    margin: 24px 0;
}
.fv-demo-container h4 {
    margin: 0 0 20px 0;
    color: var(--text-primary);
    font-size: 1rem;
}
.fv-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
    max-width: 480px;
}
.fv-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.fv-field label {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}
.fv-field input {
    padding: 10px 12px;
    border-radius: var(--radius-small);
    border: 1px solid var(--border-color);
    background: var(--surface-subtle);
    color: var(--text-primary);
    font-size: 15px;
}
.fv-field input:focus {
    outline: none;
    border-color: var(--accent-blue);
}
.fv-field input.fv-invalid {
    border-color: var(--accent-red);
    background: rgba(239, 68, 68, 0.08);
}
.fv-field input.fv-valid {
    border-color: var(--accent-green);
    background: rgba(34, 197, 94, 0.08);
}
.fv-error {
    color: var(--accent-red-dark);
    font-size: 13px;
    min-height: 18px;
}
.fv-password-wrap {
    position: relative;
    display: flex;
}
.fv-password-wrap input {
    flex: 1;
    padding-right: 90px;
}
.fv-toggle-password {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--surface-medium);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    border-radius: 6px;
    padding: 5px 10px;
    font-size: 12px;
    cursor: pointer;
}
.fv-rules {
    list-style: none;
    padding: 0;
    margin: 4px 0 0 0;
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    gap: 3px;
}
.fv-rules li::before {
    content: "○ ";
}
.fv-rules li.fv-rule-ok {
    color: var(--accent-green-light);
}
.fv-rules li.fv-rule-ok::before {
    content: "✅ ";
}
.fv-submit {
    background: var(--accent-blue);
    color: white;
    border: none;
    border-radius: var(--radius-small);
    padding: 12px 20px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 4px;
}
.fv-submit:hover {
    background: var(--accent-blue-light);
}
.fv-success {
    display: none;
    background: var(--accent-green-bg);
    border: 1px solid var(--accent-green-border);
    color: var(--accent-green-light);
    padding: 12px 16px;
    border-radius: var(--radius-small);
    margin-top: 4px;
    font-weight: 600;
    text-align: center;
}