/* =========================================================
   TSR free tools — standalone stylesheet.
   Lives outside the Vite/React pipeline (same as public/app/*.css),
   so token values are copied from src/index.css rather than shared.
   Keep these two in sync by hand if the brand palette changes.
   ========================================================= */

:root {
  --canvas: #ffffff;
  --ink: #000000;
  --ink-secondary: #3c3c3c;
  --ink-muted: #767676;
  --hairline: #e5e7eb;
  --hairline-strong: #cccccc;
  --brand-orange: #f05143;
  --warning-bg: #fff4da;
  --warning-text: #8c6000;
  --surface-tint: #f3f4ef;
  --markets-up: #338736;
  --markets-down: #e51503;
  --font-sans:
    "Inter", "Noto Sans Thai", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  max-width: 840px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---- header ---- */

.tool-header {
  border-bottom: 1px solid var(--hairline);
  padding: 20px 0;
}

.tool-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.tool-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}

.tool-brand-mark {
  width: 32px;
  height: auto;
}

.tool-brand-name {
  font-weight: 700;
  font-size: 15px;
}

.lang-toggle {
  display: inline-flex;
  flex: none;
  border: 1px solid var(--hairline-strong);
}

.lang-toggle-btn {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-muted);
  text-decoration: none;
}

.lang-toggle-btn + .lang-toggle-btn {
  border-left: 1px solid var(--hairline-strong);
}

.lang-toggle-btn[aria-current="page"] {
  background: var(--ink);
  color: #ffffff;
}

/* ---- hero / intro ---- */

.tool-main {
  padding: 48px 0 80px;
}

.tool-kicker {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  font-weight: 700;
  color: var(--brand-orange);
  margin: 0 0 12px;
}

h1.tool-title {
  font-size: 34px;
  line-height: 1.2;
  margin: 0 0 16px;
  font-weight: 800;
}

.tool-intro {
  font-size: 17px;
  color: var(--ink-secondary);
  margin: 0 0 40px;
  max-width: 640px;
}

/* ---- calculator card ---- */

.calc-card {
  border: 1px solid var(--hairline-strong);
  padding: 24px;
  margin-bottom: 48px;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.calc-field {
  margin-bottom: 16px;
}

.calc-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-secondary);
  margin-bottom: 6px;
}

.calc-field input,
.calc-field select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--hairline-strong);
  background: var(--canvas);
  color: var(--ink);
  font-family: inherit;
  font-size: 15px;
}

.calc-field input:focus,
.calc-field select:focus {
  outline: 2px solid var(--ink);
  outline-offset: -1px;
}

.calc-btn {
  width: 100%;
  padding: 13px 20px;
  background: var(--brand-orange);
  color: #ffffff;
  border: none;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.calc-btn:hover {
  filter: brightness(0.95);
}

.calc-result {
  margin-top: 16px;
  padding: 14px 16px;
  border: 1px solid var(--hairline-strong);
  font-size: 14px;
  display: none;
}

.calc-result-ok,
.calc-result-warn {
  display: block;
}

.calc-result-ok {
  background: var(--surface-tint);
}

.calc-result-warn {
  background: var(--warning-bg);
  color: var(--warning-text);
}

.calc-result-row {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
}

.calc-result-row strong {
  font-size: 16px;
}

/* ---- explainer + faq ---- */

.tool-section {
  margin-bottom: 48px;
}

.tool-section h2 {
  font-size: 22px;
  margin: 0 0 14px;
}

.tool-section p,
.tool-section li {
  color: var(--ink-secondary);
}

.tool-formula {
  border-left: 3px solid var(--brand-orange);
  padding: 4px 0 4px 16px;
  margin: 16px 0;
  font-family: "Courier New", monospace;
  font-size: 14px;
  color: var(--ink);
}

.tool-faq-item {
  border-bottom: 1px solid var(--hairline);
  padding: 14px 0;
}

.tool-faq-item summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 15px;
}

.tool-faq-item p {
  margin: 10px 0 0;
  font-size: 14px;
}

/* ---- cta ---- */

.tool-cta {
  border: 1px solid var(--hairline-strong);
  padding: 28px;
  text-align: center;
}

.tool-cta h2 {
  margin: 0 0 8px;
  font-size: 20px;
}

.tool-cta p {
  margin: 0 0 18px;
  color: var(--ink-secondary);
}

.tool-cta-btn {
  display: inline-block;
  padding: 11px 22px;
  border: 1px solid var(--ink);
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
}

.tool-cta-btn:hover {
  background: var(--ink);
  color: #ffffff;
}

/* ---- footer ---- */

.tool-footer {
  border-top: 1px solid var(--hairline);
  padding: 24px 0;
}

.tool-footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--ink-muted);
}

.tool-footer a {
  color: var(--ink-muted);
}

/* ---- pc row list + bulk paste (Consistency calculator) ---- */

.pc-row-list {
  margin-bottom: 16px;
}

.pc-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.pc-row-index {
  width: 24px;
  flex: none;
  font-size: 13px;
  color: var(--ink-muted);
  text-align: right;
}

.pc-row input {
  flex: 1;
  padding: 9px 12px;
  border: 1px solid var(--hairline-strong);
  background: var(--canvas);
  color: var(--ink);
  font-family: inherit;
  font-size: 14px;
}

.pc-row-remove {
  flex: none;
  width: 32px;
  height: 32px;
  border: 1px solid var(--hairline-strong);
  background: var(--canvas);
  color: var(--ink-muted);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
}

.pc-row-remove:hover {
  color: var(--markets-down);
  border-color: var(--markets-down);
}

.pc-add-row {
  padding: 9px 16px;
  border: 1px solid var(--hairline-strong);
  background: var(--canvas);
  color: var(--ink);
  font-family: inherit;
  font-size: 14px;
  cursor: pointer;
  margin-bottom: 24px;
}

.pc-bulk-field {
  margin-bottom: 10px;
}

.pc-bulk-field textarea {
  width: 100%;
  min-height: 70px;
  padding: 10px 12px;
  border: 1px solid var(--hairline-strong);
  background: var(--canvas);
  color: var(--ink);
  font-family: inherit;
  font-size: 14px;
  resize: vertical;
}

.pc-bulk-apply {
  padding: 9px 16px;
  border: 1px solid var(--hairline-strong);
  background: var(--canvas);
  color: var(--ink);
  font-family: inherit;
  font-size: 14px;
  cursor: pointer;
  margin-bottom: 24px;
}

.pc-notice {
  font-size: 13px;
  color: var(--warning-text);
  margin: -6px 0 16px;
}

/* ---- pc result (hero value, progress bar, kpi grid) ---- */

.pc-result {
  margin-top: 8px;
}

.pc-hero {
  text-align: center;
  padding: 20px 0 16px;
}

.pc-hero-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
  margin-bottom: 8px;
}

.pc-hero-value {
  font-size: 44px;
  font-weight: 800;
  line-height: 1;
}

.pc-hero-status {
  font-size: 14px;
  font-weight: 700;
  margin-top: 8px;
}

.pc-tone-pass {
  color: var(--markets-up);
}

.pc-tone-fail {
  color: var(--markets-down);
}

.pc-tone-neutral {
  color: var(--ink-muted);
}

.pc-progress-track {
  height: 8px;
  background: var(--hairline);
  margin: 0 0 16px;
}

.pc-progress-fill {
  height: 100%;
}

.pc-fill-safe {
  background: var(--markets-up);
}

.pc-fill-danger {
  background: var(--markets-down);
}

.pc-fill-neutral {
  background: var(--hairline-strong);
}

.pc-denom-line {
  text-align: center;
  font-size: 13px;
  color: var(--ink-secondary);
  margin-bottom: 24px;
}

.pc-limit-line {
  display: block;
  color: var(--ink-muted);
  margin-top: 4px;
}

.pc-kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.pc-kpi-card {
  border: 1px solid var(--hairline-strong);
  padding: 14px;
}

.pc-kpi-label {
  font-size: 12px;
  color: var(--ink-muted);
  margin-bottom: 6px;
}

.pc-kpi-value {
  font-size: 18px;
  font-weight: 700;
}

.pc-kpi-sub {
  font-size: 12px;
  color: var(--ink-muted);
  margin-top: 4px;
}

/* ---- tools hub (list of free tools) ---- */

.tool-hub-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 48px;
}

.tool-hub-card {
  display: block;
  border: 1px solid var(--hairline-strong);
  padding: 24px;
  text-decoration: none;
  color: var(--ink);
}

.tool-hub-card:hover {
  border-color: var(--ink);
}

.tool-hub-card-title {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 8px;
}

.tool-hub-card-desc {
  font-size: 14px;
  color: var(--ink-secondary);
  margin: 0 0 14px;
}

.tool-hub-card-cta {
  font-size: 13px;
  font-weight: 700;
  color: var(--brand-orange);
}

/* ---- responsive ---- */

@media (max-width: 640px) {
  h1.tool-title {
    font-size: 26px;
  }

  .calc-grid {
    grid-template-columns: 1fr;
  }

  .tool-footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .pc-kpi-grid {
    grid-template-columns: 1fr;
  }

  .pc-hero-value {
    font-size: 34px;
  }

  .tool-hub-grid {
    grid-template-columns: 1fr;
  }
}