.utmbuilder {
    --pk-accent: #fd3367;
    --pk-accent-dark: #500b28;
    --pk-gradient: linear-gradient(45deg, #fd3367, #663399);
    --pk-ink: #212529;
    --pk-muted: #6c757d;
    --pk-border: #dee2e6;
    --pk-field-bg: #fff;
    --pk-surface: #f8f5f7;
    --pk-error: #e21c34;
    --pk-success: #1e7e34;
    --pk-warning: #8a5300;
    max-width: 72rem;
    margin: 0 auto;
    color: var(--pk-ink);
    font-family: "Montserrat-Regular", sans-serif;
}

.utmbuilder *,
.utmbuilder *::before,
.utmbuilder *::after {
    box-sizing: border-box;
}

.utmbuilder__title {
    font-family: "Montserrat-ExtraBold", sans-serif;
    letter-spacing: .02em;
    margin: 0 0 1rem;
    color: var(--pk-accent-dark);
}

.utmbuilder__intro {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--pk-muted);
    max-width: 48rem;
    margin: 0 0 2rem;
}

.utmbuilder code {
    font-family: "Menlo", "Consolas", monospace;
    font-size: .85em;
    background: rgba(253, 51, 103, .08);
    padding: 0 .3em;
    border-radius: .2rem;
}

/* Layout: form | result, stacks on small screens */
.utmbuilder__layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
    gap: 2rem;
    align-items: start;
}

@media (min-width: 62rem) {
    .utmbuilder__layout {
        grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
    }

    .utmbuilder__result {
        position: sticky;
        top: 7rem;
    }
}

/* Steps */
.utmbuilder__step {
    border: 0;
    margin: 0 0 2rem;
    padding: 0;
    min-width: 0;
}

.utmbuilder__step-title {
    display: flex;
    align-items: center;
    gap: .75rem;
    font-family: "Montserrat-ExtraBold", sans-serif;
    font-size: 1.125rem;
    color: var(--pk-accent-dark);
    margin: 0 0 1rem;
    padding: 0;
}

.utmbuilder__step-no {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: none;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--pk-gradient);
    color: #fff;
    font-size: .95rem;
}

.utmbuilder__row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
    gap: 0 1.25rem;
}

.utmbuilder__field {
    display: flex;
    flex-direction: column;
    gap: .4rem;
    margin: 0 0 1.25rem;
}

.utmbuilder__label {
    font-family: "Montserrat-SemiBold", sans-serif;
    font-size: .95rem;
    color: var(--pk-ink);
}

.utmbuilder__param {
    font-weight: normal;
    color: var(--pk-muted);
    margin-left: .25rem;
}

.utmbuilder__req {
    color: var(--pk-accent);
}

.utmbuilder__input,
.utmbuilder__output {
    font-family: "Menlo", "Consolas", monospace;
    font-size: .95rem;
    line-height: 1.5;
    color: var(--pk-ink);
    padding: .7rem .8rem;
    border: 1px solid var(--pk-border);
    border-radius: .25rem;
    background: var(--pk-field-bg);
    width: 100%;
    transition: border-color .15s ease-in-out, box-shadow .15s ease-in-out;
}

.utmbuilder__input:focus,
.utmbuilder__output:focus {
    outline: 0;
    border-color: var(--pk-accent);
    box-shadow: 0 0 0 .2rem rgba(253, 51, 103, .25);
}

.utmbuilder__input--urls {
    resize: vertical;
    min-height: 5.5rem;
    white-space: pre;
    overflow-x: auto;
}

.utmbuilder__input[aria-invalid="true"] {
    border-color: var(--pk-error);
}

.utmbuilder__hint {
    font-size: .85rem;
    line-height: 1.5;
    color: var(--pk-muted);
    margin: 0;
}

.utmbuilder__hint--lead {
    margin-bottom: .75rem;
}

/* Presets (below the source/medium fields) */
.utmbuilder__presets-wrap {
    margin: -.25rem 0 0;
    padding: 1rem 1.25rem 1.25rem;
    background: var(--pk-surface);
    border-radius: .25rem;
}

.utmbuilder__presets {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}

.utmbuilder__chip {
    appearance: none;
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: .1rem;
    padding: .45rem .9rem;
    border: 1px solid var(--pk-border);
    border-radius: .5rem;
    background: #fff;
    color: var(--pk-accent-dark);
    text-align: left;
    cursor: pointer;
    transition: border-color .15s, background-color .15s, color .15s;
}

.utmbuilder__chip-name {
    font-family: "Montserrat-SemiBold", sans-serif;
    font-size: .85rem;
}

.utmbuilder__chip-values {
    font-family: "Menlo", "Consolas", monospace;
    font-size: .72rem;
    color: var(--pk-muted);
}

.utmbuilder__chip:hover {
    border-color: var(--pk-accent);
    color: var(--pk-accent);
}

.utmbuilder__chip[aria-pressed="true"] {
    background: var(--pk-gradient);
    border-color: transparent;
    color: #fff;
}

.utmbuilder__chip[aria-pressed="true"] .utmbuilder__chip-values {
    color: rgba(255, 255, 255, .85);
}

/* Optional fields */
.utmbuilder__more {
    border-top: 1px solid var(--pk-border);
    padding-top: .75rem;
}

.utmbuilder__more-toggle {
    font-family: "Montserrat-SemiBold", sans-serif;
    font-size: .95rem;
    color: var(--pk-accent-dark);
    cursor: pointer;
    padding: .25rem 0;
    margin-bottom: 1rem;
}

.utmbuilder__more:not([open]) .utmbuilder__more-toggle {
    margin-bottom: 0;
}

.utmbuilder__option {
    display: flex;
    flex-direction: column;
    gap: .5rem;
    padding: 1rem 1.25rem;
    background: var(--pk-surface);
    border-radius: .25rem;
}

/* Switch – identical in all Pottkinder tools */
.pk-switch {
    display: inline-flex;
    align-items: center;
    gap: .75rem;
    font-family: "Montserrat-SemiBold", sans-serif;
    font-size: .82rem;
    letter-spacing: .04em;
    color: var(--pk-muted);
    user-select: none;
}

.pk-switch__side {
    transition: color .15s ease;
}

.pk-switch__side--on {
    color: var(--pk-accent-dark);
}

.pk-switch__toggle {
    appearance: none;
    border: 0;
    width: 3.25rem;
    height: 1.6rem;
    border-radius: 1rem;
    background: var(--pk-gradient);
    cursor: pointer;
    padding: 0;
    position: relative;
    flex: none;
}

.pk-switch__toggle[aria-checked="false"] {
    background: var(--pk-border);
}

.pk-switch__toggle:focus-visible {
    outline: 0;
    box-shadow: 0 0 0 .2rem rgba(253, 51, 103, .35);
}

.pk-switch__thumb {
    position: absolute;
    top: .2rem;
    left: .2rem;
    width: 1.2rem;
    height: 1.2rem;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, .3);
    transition: transform .18s ease;
}

.pk-switch__toggle[aria-checked="true"] .pk-switch__thumb {
    transform: translateX(1.65rem);
}

/* Result */
.utmbuilder__result {
    padding: 1.5rem;
    border: 1px solid var(--pk-border);
    border-radius: .25rem;
    background: #fff;
    box-shadow: 0 .75rem 2rem rgba(33, 37, 41, .06);
}

.utmbuilder__result-title {
    font-family: "Montserrat-ExtraBold", sans-serif;
    font-size: 1.125rem;
    color: var(--pk-accent-dark);
    margin: 0 0 .75rem;
}

.utmbuilder__output {
    resize: vertical;
    white-space: pre;
    overflow-x: auto;
    background: var(--pk-surface);
}

.utmbuilder__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    margin-top: 1rem;
}

.utmbuilder__btn {
    appearance: none;
    display: inline-flex;
    align-items: center;
    border: 0;
    border-radius: .25rem;
    padding: .75rem 1.25rem;
    font-family: "Montserrat-ExtraBold", sans-serif;
    font-size: .85rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    text-decoration: none;
    color: #fff;
    background: var(--pk-gradient);
    cursor: pointer;
    transition: filter .3s ease, transform .1s ease;
}

.utmbuilder__btn:hover {
    filter: brightness(1.1);
    color: #fff;
    text-decoration: none;
}

.utmbuilder__btn:active {
    transform: translateY(1px);
}

.utmbuilder__btn:focus-visible,
.utmbuilder__chip:focus-visible,
.utmbuilder__more-toggle:focus-visible {
    outline: 3px solid var(--pk-accent);
    outline-offset: 2px;
}

.utmbuilder__btn:disabled,
.utmbuilder__btn[aria-disabled="true"] {
    opacity: .45;
    cursor: not-allowed;
    filter: none;
}

.utmbuilder__btn--ghost,
.utmbuilder__btn--ghost:hover {
    color: var(--pk-accent-dark);
    background: transparent;
    border: 1px solid var(--pk-border);
}

.utmbuilder__btn--ghost:hover:not([aria-disabled="true"]) {
    border-color: var(--pk-accent);
    color: var(--pk-accent);
    filter: none;
}

.utmbuilder__status {
    margin: .75rem 0 0;
    font-family: "Montserrat-SemiBold", sans-serif;
    font-size: .85rem;
    min-height: 1.2em;
    color: var(--pk-muted);
}

.utmbuilder__status--error {
    color: var(--pk-error);
}

.utmbuilder__status--success {
    color: var(--pk-success);
}

/* GA4 preview */
.utmbuilder__ga {
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--pk-border);
}

.utmbuilder__ga[hidden] {
    display: none;
}

.utmbuilder__ga-title {
    font-family: "Montserrat-SemiBold", sans-serif;
    font-size: .8rem;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--pk-accent);
    margin: 0 0 .75rem;
}

.utmbuilder__ga-list {
    margin: 0;
    display: grid;
    gap: .5rem;
}

.utmbuilder__ga-list > div {
    display: grid;
    grid-template-columns: minmax(0, 11rem) minmax(0, 1fr);
    gap: .75rem;
}

.utmbuilder__ga-list > div[hidden] {
    display: none;
}

.utmbuilder__ga-list dt {
    font-size: .85rem;
    color: var(--pk-muted);
}

.utmbuilder__ga-list dd {
    margin: 0;
    font-family: "Montserrat-SemiBold", sans-serif;
    font-size: .9rem;
    word-break: break-word;
}

/* Hints */
.utmbuilder__notes {
    list-style: none;
    margin: 1rem 0 0;
    padding: 0;
    display: grid;
    gap: .5rem;
}

.utmbuilder__note {
    font-size: .85rem;
    line-height: 1.5;
    padding: .6rem .8rem;
    border-left: .25rem solid var(--pk-muted);
    background: var(--pk-surface);
    border-radius: 0 .25rem .25rem 0;
}

.utmbuilder__note--warning {
    border-left-color: #e0a100;
    color: var(--pk-warning);
    background: #fff8e6;
}

.utmbuilder__visually-hidden {
    position: absolute !important;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
    .utmbuilder * {
        transition: none !important;
    }
}