.pd-tool {
    --pd-bg: #f7f9f8;
    --pd-surface: #ffffff;
    --pd-surface-strong: #eef6f3;
    --pd-text: #17201d;
    --pd-muted: #5d6965;
    --pd-border: #d9e1de;
    --pd-border-strong: #b9cbc5;
    --pd-accent: #146c5a;
    --pd-accent-hover: #0f594a;
    --pd-accent-contrast: #ffffff;
    --pd-warning-bg: #fff8e8;
    --pd-warning-border: #e7c86c;
    --pd-error-bg: #fff0f0;
    --pd-error-border: #d68484;
    --pd-error-text: #7d2424;
    --pd-focus: #0b63ce;
    --pd-radius: 14px;
    --pd-radius-small: 10px;
    --pd-shadow: 0 12px 30px rgba(23, 32, 29, 0.08);
    --pd-font: inherit;
    color: var(--pd-text);
    background: var(--pd-bg);
    border: 1px solid var(--pd-border);
    border-radius: var(--pd-radius);
    box-shadow: var(--pd-shadow);
    font-family: var(--pd-font);
    font-size: 16px;
    line-height: 1.55;
    margin: 28px 0;
    padding: 24px;
}

.pd-tool,
.pd-tool * {
    box-sizing: border-box;
}

.pd-tool [hidden] {
    display: none !important;
}

.pd-tool .pd-heading {
    margin: 0 0 20px;
}

.pd-tool .pd-title {
    color: var(--pd-text);
    font-family: var(--pd-font);
    font-size: clamp(1.35rem, 2.6vw, 1.8rem);
    font-weight: 700;
    line-height: 1.25;
    margin: 0 0 8px;
}

.pd-tool .pd-intro,
.pd-tool .pd-help,
.pd-tool .pd-result-meta,
.pd-tool .pd-check-text,
.pd-tool .pd-disclaimer {
    color: var(--pd-muted);
}

.pd-tool .pd-intro {
    max-width: 74ch;
}

.pd-tool .pd-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.pd-tool .pd-field {
    min-width: 0;
}

.pd-tool .pd-label {
    color: var(--pd-text);
    cursor: pointer;
    display: block;
    font-family: var(--pd-font);
    font-weight: 600;
}

.pd-tool .pd-label-text {
    display: block;
    margin: 0 0 7px;
}

.pd-tool .pd-input-wrap,
.pd-tool .pd-select-wrap {
    align-items: center;
    background: var(--pd-surface);
    border: 1px solid var(--pd-border-strong);
    border-radius: var(--pd-radius-small);
    display: flex;
    min-height: 48px;
    overflow: hidden;
    position: relative;
    width: 100%;
}

.pd-tool .pd-input,
.pd-tool .pd-select {
    appearance: none;
    background: transparent;
    border: 0;
    color: var(--pd-text);
    font: inherit;
    font-size: 16px;
    min-height: 46px;
    outline: 0;
    width: 100%;
}

.pd-tool .pd-input {
    padding: 10px 12px;
}

.pd-tool .pd-select {
    cursor: pointer;
    padding: 10px 38px 10px 12px;
}

.pd-tool .pd-select-wrap::after {
    border-bottom: 2px solid var(--pd-muted);
    border-right: 2px solid var(--pd-muted);
    content: "";
    height: 8px;
    pointer-events: none;
    position: absolute;
    right: 16px;
    top: calc(50% - 7px);
    transform: rotate(45deg);
    width: 8px;
}

.pd-tool .pd-suffix {
    color: var(--pd-muted);
    flex: 0 0 auto;
    font-weight: 600;
    padding: 0 12px 0 4px;
    white-space: nowrap;
}

.pd-tool .pd-input-wrap:focus-within,
.pd-tool .pd-select-wrap:focus-within {
    border-color: var(--pd-focus);
    box-shadow: 0 0 0 3px rgba(11, 99, 206, 0.16);
}

.pd-tool .pd-input-wrap:has([aria-invalid="true"]) {
    background: var(--pd-error-bg);
    border-color: var(--pd-error-border);
}

.pd-tool .pd-help {
    font-size: 0.875rem;
    margin-top: 6px;
}

.pd-tool .pd-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0;
}

.pd-tool .pd-button {
    appearance: none;
    background: var(--pd-accent);
    border: 1px solid var(--pd-accent);
    border-radius: var(--pd-radius-small);
    color: var(--pd-accent-contrast);
    cursor: pointer;
    font: inherit;
    font-size: 16px;
    font-weight: 700;
    min-height: 46px;
    padding: 10px 18px;
    transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.pd-tool .pd-button:hover {
    background: var(--pd-accent-hover);
    border-color: var(--pd-accent-hover);
}

.pd-tool .pd-button:active {
    transform: translateY(1px);
}

.pd-tool .pd-button:focus-visible {
    outline: 3px solid var(--pd-focus);
    outline-offset: 3px;
}

.pd-tool .pd-button-secondary {
    background: var(--pd-surface);
    border-color: var(--pd-border-strong);
    color: var(--pd-text);
}

.pd-tool .pd-button-secondary:hover {
    background: var(--pd-surface-strong);
    border-color: var(--pd-border-strong);
}

.pd-tool .pd-error {
    background: var(--pd-error-bg);
    border: 1px solid var(--pd-error-border);
    border-radius: var(--pd-radius-small);
    color: var(--pd-error-text);
    font-weight: 600;
    margin: 0 0 16px;
    padding: 11px 13px;
}

.pd-tool .pd-results {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.pd-tool .pd-result-card {
    background: var(--pd-surface);
    border: 1px solid var(--pd-border);
    border-radius: var(--pd-radius-small);
    min-width: 0;
    padding: 16px;
}

.pd-tool .pd-result-card-emphasis {
    background: var(--pd-surface-strong);
    border-color: var(--pd-border-strong);
}

.pd-tool .pd-result-label {
    color: var(--pd-muted);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.pd-tool .pd-result-value {
    color: var(--pd-text);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    overflow-wrap: anywhere;
}

.pd-tool .pd-result-meta {
    font-size: 0.82rem;
    margin-top: 3px;
}

.pd-tool .pd-reading {
    background: var(--pd-warning-bg);
    border: 1px solid var(--pd-warning-border);
    border-radius: var(--pd-radius-small);
    margin-top: 16px;
    padding: 15px 16px;
}

.pd-tool .pd-reading-title,
.pd-tool .pd-checklist-title {
    color: var(--pd-text);
    font-weight: 700;
    margin-bottom: 5px;
}

.pd-tool .pd-reading-text {
    color: var(--pd-text);
}

.pd-tool .pd-checklist {
    border-top: 1px solid var(--pd-border);
    margin-top: 20px;
    padding-top: 18px;
}

.pd-tool .pd-checklist-grid {
    display: grid;
    gap: 10px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.pd-tool .pd-check-item {
    background: var(--pd-surface);
    border: 1px solid var(--pd-border);
    border-radius: var(--pd-radius-small);
    min-width: 0;
    padding: 12px 13px;
}

.pd-tool .pd-check-name {
    color: var(--pd-text);
    font-weight: 700;
    margin-bottom: 2px;
}

.pd-tool .pd-check-text {
    font-size: 0.875rem;
}

.pd-tool .pd-disclaimer {
    border-top: 1px solid var(--pd-border);
    font-size: 0.82rem;
    margin-top: 18px;
    padding-top: 14px;
}

@media (max-width: 700px) {
    .pd-tool {
        border-radius: 10px;
        margin: 22px 0;
        padding: 18px 14px;
    }

    .pd-tool .pd-grid,
    .pd-tool .pd-results,
    .pd-tool .pd-checklist-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .pd-tool .pd-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .pd-tool .pd-button {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .pd-tool .pd-button {
        transition: none;
    }
}