.pd-tool {
    --pd-bg: #ffffff;
    --pd-surface: #f7f8fa;
    --pd-surface-strong: #eef1f4;
    --pd-text: #17202a;
    --pd-muted: #5f6b76;
    --pd-border: #d9dee5;
    --pd-accent: #a87316;
    --pd-accent-strong: #78500c;
    --pd-accent-soft: #fff5df;
    --pd-positive: #176b45;
    --pd-negative: #a33a32;
    --pd-focus: #2563eb;
    --pd-radius: 16px;
    --pd-radius-sm: 10px;
    --pd-shadow: 0 14px 36px rgba(20, 28, 38, 0.08);
    --pd-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    box-sizing: border-box;
    color: var(--pd-text);
    font-family: var(--pd-font);
    font-size: 16px;
    line-height: 1.55;
    margin: 32px 0;
}

.pd-tool *,
.pd-tool *::before,
.pd-tool *::after {
    box-sizing: inherit;
}

.pd-tool p {
    margin: 0;
}

.pd-shell {
    background: var(--pd-bg);
    border: 1px solid var(--pd-border);
    border-radius: var(--pd-radius);
    box-shadow: var(--pd-shadow);
    overflow: hidden;
}

.pd-heading {
    padding: 28px 28px 18px;
}

.pd-kicker {
    color: var(--pd-accent-strong);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    margin-bottom: 6px;
    text-transform: uppercase;
}

.pd-title {
    color: var(--pd-text);
    font-size: clamp(1.45rem, 2.3vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin: 0 0 10px;
}

.pd-intro {
    color: var(--pd-muted);
    font-size: 1rem;
    max-width: 78ch;
}

.pd-presets {
    border-bottom: 1px solid var(--pd-border);
    border-top: 1px solid var(--pd-border);
    overflow-x: auto;
    padding: 12px 28px;
    -webkit-overflow-scrolling: touch;
}

.pd-presets-track {
    display: flex;
    gap: 8px;
    min-width: max-content;
}

.pd-chip,
.pd-button {
    appearance: none;
    border: 1px solid var(--pd-border);
    border-radius: 999px;
    cursor: pointer;
    font-family: var(--pd-font);
    font-size: 0.92rem;
    font-weight: 700;
    line-height: 1.2;
    min-height: 42px;
    transition: border-color 160ms ease, background-color 160ms ease, color 160ms ease;
}

.pd-chip {
    background: var(--pd-surface);
    color: var(--pd-text);
    padding: 9px 14px;
}

.pd-chip:hover {
    background: var(--pd-accent-soft);
    border-color: var(--pd-accent);
    color: var(--pd-accent-strong);
}

.pd-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.pd-panel {
    min-width: 0;
    padding: 26px 28px 28px;
}

.pd-panel-inputs {
    border-right: 1px solid var(--pd-border);
}

.pd-panel-results {
    background: var(--pd-surface);
}

.pd-panel-title {
    color: var(--pd-text);
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 18px;
}

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

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

.pd-field-wide {
    grid-column: 1 / -1;
}

.pd-label {
    color: var(--pd-text);
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.pd-input-wrap {
    align-items: center;
    background: var(--pd-bg);
    border: 1px solid var(--pd-border);
    border-radius: var(--pd-radius-sm);
    display: flex;
    min-height: 48px;
    overflow: hidden;
}

.pd-input-wrap:focus-within {
    border-color: var(--pd-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.16);
}

.pd-tool input,
.pd-tool select {
    background: transparent;
    border: 0;
    border-radius: 0;
    color: var(--pd-text);
    font-family: var(--pd-font);
    font-size: 16px;
    line-height: 1.2;
    margin: 0;
    min-width: 0;
    outline: 0;
    padding: 12px 13px;
    width: 100%;
}

.pd-tool select {
    cursor: pointer;
}

.pd-input-suffix span {
    color: var(--pd-muted);
    flex: 0 0 auto;
    font-size: 0.92rem;
    font-weight: 700;
    padding: 0 13px 0 4px;
}

.pd-hint {
    color: var(--pd-muted);
    font-size: 0.78rem;
    line-height: 1.4;
    margin-top: 5px;
}

.pd-actions {
    display: flex;
    justify-content: flex-start;
    margin-top: 20px;
}

.pd-button {
    padding: 10px 15px;
}

.pd-button-secondary {
    background: var(--pd-bg);
    color: var(--pd-text);
}

.pd-button-secondary:hover {
    background: var(--pd-surface-strong);
    border-color: #b7c0ca;
}

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

.pd-metric {
    background: var(--pd-bg);
    border: 1px solid var(--pd-border);
    border-radius: var(--pd-radius-sm);
    min-width: 0;
    padding: 14px;
}

.pd-metric-featured {
    background: var(--pd-accent-soft);
    border-color: rgba(168, 115, 22, 0.42);
}

.pd-metric-label {
    color: var(--pd-muted);
    font-size: 0.78rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 5px;
}

.pd-metric-value {
    color: var(--pd-text);
    font-size: clamp(1.18rem, 2vw, 1.48rem);
    font-variant-numeric: tabular-nums;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.15;
    overflow-wrap: anywhere;
}

.pd-metric-value[data-pd-sign="negative"] {
    color: var(--pd-negative);
}

.pd-metric-value[data-pd-sign="positive"] {
    color: var(--pd-positive);
}

.pd-metric-note {
    color: var(--pd-muted);
    font-size: 0.75rem;
    line-height: 1.35;
    margin-top: 6px;
}

.pd-reading {
    background: var(--pd-bg);
    border-left: 4px solid var(--pd-accent);
    border-radius: 0 var(--pd-radius-sm) var(--pd-radius-sm) 0;
    color: var(--pd-text);
    font-size: 0.9rem;
    line-height: 1.55;
    margin-top: 16px;
    padding: 13px 14px;
}

.pd-status {
    color: var(--pd-negative);
    font-size: 0.82rem;
    font-weight: 700;
    min-height: 1.4em;
    padding-top: 7px;
}

.pd-details {
    border-top: 1px solid var(--pd-border);
    padding: 0 28px;
}

.pd-details summary {
    color: var(--pd-text);
    cursor: pointer;
    font-weight: 700;
    padding: 17px 0;
}

.pd-details-body {
    color: var(--pd-muted);
    padding: 0 0 22px;
}

.pd-formula {
    font-size: 0.86rem;
    margin-bottom: 7px;
}

.pd-formula strong {
    color: var(--pd-text);
}

.pd-disclaimer {
    border-top: 1px dashed var(--pd-border);
    font-size: 0.8rem;
    margin-top: 12px;
    padding-top: 12px;
}

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

@media (max-width: 820px) {
    .pd-layout {
        grid-template-columns: 1fr;
    }

    .pd-panel-inputs {
        border-bottom: 1px solid var(--pd-border);
        border-right: 0;
    }
}

@media (max-width: 620px) {
    .pd-tool {
        margin: 24px 0;
    }

    .pd-heading,
    .pd-panel,
    .pd-presets,
    .pd-details {
        padding-left: 18px;
        padding-right: 18px;
    }

    .pd-form-grid,
    .pd-metrics {
        grid-template-columns: 1fr;
    }

    .pd-field-wide {
        grid-column: auto;
    }
}

@media (prefers-reduced-motion: reduce) {
    .pd-tool *,
    .pd-tool *::before,
    .pd-tool *::after {
        transition-duration: 0.01ms !important;
    }
}