:root {
    --font-family: sans-serif;

    --color-bg: #ffffff;
    --color-text: #1f2937; /* gray-800 */
    --color-muted: #6b7280; /* gray-500 */
    --color-border: #d1d5db; /* gray-300 */
    --color-border-required: #d1858b; /* gray-300 */
    --color-border-focus: #2563eb; /* blue-600 */
    --color-error: #dc2626; /* red-600 */
    --color-disabled: #f3f4f6; /* gray-100 */

    --radius: 3px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 0.75rem;
    --spacing-lg: 1.25rem;

    --transition: 0.15s ease-in-out;
}

/* FORM LAYOUT */
form {
    font-family: var(--font-family);
    color: var(--color-text);
    max-width: 480px;
}

form#memberdataform {
    max-width: 100%;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

/* LABELS */
label {
    display: block;
    font-size: 80%;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    padding-left: calc(1px + var(--spacing-md));
}

label.required::after {
    content: " *";
    color: #f00;
    display: inline;
}

/* INPUTS */
input,
select,
textarea {
    display: block;
    width: 30rem;
    max-width: 90%;
    font: inherit;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background-color: var(--color-bg);
    transition: border-color var(--transition);
    outline: none;
    box-shadow: none;
    margin-bottom: var(--spacing-lg);
    margin-right: var(--spacing-lg);
    box-sizing: border-box;
}

input.required,
select.required,
textarea.required {
    /* border: 2px solid var(--color-border-required); */
    border-width: 2px;
}

input.password {
    font-family: monospace;
    font-weight: bold;
    font-size: 140%;
}

input[type="submit"] {
    color: var(--color-text);
    font-weight: bold;
    width: 31.5rem;
    max-width: 90%;
}

input.validpw {
    color: #040;
    background-color: #aea;
}

input.invalidpw {
    color: #800;
}

/* FOCUS STATE */
input:focus,
select:focus,
textarea:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* PLACEHOLDER */
::placeholder {
    color: var(--color-muted);
}

/* HELP TEXT */
.form-help {
    font-size: 0.75rem;
    color: var(--color-muted);
    margin-top: var(--spacing-xs);
}

/* ERROR STATE */
.input-error {
    border-color: var(--color-error);
}

.error-text {
    color: var(--color-error);
    font-size: 0.75rem;
    margin-top: var(--spacing-xs);
}

/* DISABLED */
input:disabled,
select:disabled,
textarea:disabled {
    background-color: var(--color-disabled);
    cursor: not-allowed;
}

/* BUTTON */
button {
    font: inherit;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius);
    border: none;
    background-color: var(--color-border-focus);
    color: white;
    font-weight: 500;
    cursor: pointer;
    transition:
        background-color var(--transition),
        box-shadow var(--transition);
}

button:hover {
    background-color: #1d4ed8;
}

button:focus {
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
}

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