/* mtdevworks tools — shared design system v1.0 */
:root,
[data-theme='light'] {
  --bg: #fafafa;
  --surface: #f4f4f5;
  --card: #ffffff;
  --border: #e4e4e7;
  --border-hover: #d4d4d8;
  --border-strong: #a1a1aa;
  --text: #18181b;
  --muted: #71717a;
  --dim: #a1a1aa;
  --text-secondary: #52525b;
  --card-hover-bg: #f4f4f5;
  --accent: #4f46e5;
  --accent-hover: #6366f1;
  --accent-glow: rgba(79, 70, 229, 0.12);
}

[data-theme='dark'] {
  --bg: #050507;
  --surface: #111116;
  --card: #18181d;
  --border: #27272a;
  --border-hover: #3f3f46;
  --border-strong: #3f3f46;
  --text: #e4e4e7;
  --muted: #a1a1aa;
  --dim: #71717a;
  --text-secondary: #a1a1aa;
  --card-hover-bg: #1f1f24;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.12);
  --green: #22c55e;
  --red: #ef4444;
  --amber: #f59e0b;
  --cyan: #06b6d4;
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'Geist Mono', 'JetBrains Mono', 'Fira Code', monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--accent-glow);
  color: var(--text);
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---- Layout ---- */
.tool-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.tool-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
}
.tool-nav-inner {
  max-width: 1024px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 1.25rem;
}
.tool-nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  transition: opacity 0.2s;
  flex-shrink: 0;
}
.tool-nav-brand:hover {
  opacity: 0.8;
}
.tool-nav-brand img {
  height: 28px;
  width: auto;
  display: block;
}
.tool-nav-name {
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--text);
}
.tool-nav-links {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  margin-left: 0;
}
.tool-nav-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 4.5rem;
  height: 2.25rem;
  padding: 0 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
}
.tool-nav-menu-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.tool-nav-links a {
  font-size: 0.8125rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.tool-nav-links a:hover {
  color: var(--text);
}

.tool-nav-logo-dark,
.tool-nav-logo-light {
  height: 28px;
  width: auto;
  display: block;
}
.tool-footer-brand .tool-nav-logo-dark,
.tool-footer-brand .tool-nav-logo-light {
  height: 24px;
}
[data-theme='dark'] .tool-nav-logo-light {
  display: none !important;
}
[data-theme='light'] .tool-nav-logo-dark {
  display: none !important;
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: auto;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  transition:
    color 0.2s,
    border-color 0.2s,
    background 0.2s;
}
.theme-toggle-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--card-hover-bg);
}
.theme-toggle-icon {
  display: flex;
}
[data-theme='dark'] .theme-toggle-icon--moon {
  display: none;
}
[data-theme='light'] .theme-toggle-icon--sun {
  display: none;
}

.tool-container {
  flex: 1;
  max-width: 760px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.tool-header {
  text-align: center;
  margin-bottom: 2rem;
}
.tool-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 0.5rem;
}
.tool-header .subtitle {
  color: var(--muted);
  font-size: 0.9375rem;
  max-width: 560px;
  margin: 0 auto;
}
.tool-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  background: var(--accent-glow);
  color: var(--accent);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---- Cards ---- */
.calc-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 1.5rem;
  transition: border-color 0.2s;
}
.calc-card:hover {
  border-color: var(--border-hover);
}

/* ---- Form ---- */
.form-group {
  margin-bottom: 1.25rem;
}
label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
  color: var(--muted);
}
label .hint {
  font-weight: 400;
  color: var(--dim);
}

select,
input[type='date'],
input[type='number'],
input[type='text'],
textarea {
  width: 100%;
  padding: 0.625rem 0.875rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.875rem;
  outline: none;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}
textarea {
  resize: vertical;
  min-height: 120px;
  font-family: var(--mono);
  font-size: 0.8125rem;
}
select:focus,
input:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
select {
  cursor: pointer;
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
}

.radio-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.radio-group label {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.8125rem;
  color: var(--text);
  font-weight: 500;
  transition: all 0.2s;
}
.radio-group input {
  display: none;
}
.radio-group input:checked + label,
.radio-group label:has(input:checked) {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
}

/* ---- Buttons ---- */
.btn {
  display: block;
  width: 100%;
  padding: 0.75rem 1.5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition:
    background 0.2s,
    transform 0.1s,
    box-shadow 0.2s;
}
.btn:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 20px var(--accent-glow);
}
.btn:active {
  transform: scale(0.98);
}
.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--card);
  border-color: var(--border-hover);
  box-shadow: none;
}
.btn-row {
  display: flex;
  gap: 0.75rem;
}
.btn-row .btn {
  width: auto;
  flex: 1;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  display: inline-block;
  width: auto;
}

/* ---- Results ---- */
.result {
  display: none;
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: var(--accent-glow);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius);
}
.result.active {
  display: block;
}
.result h3 {
  font-size: 1rem;
  margin-bottom: 1rem;
  color: var(--accent-hover);
}
.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(99, 102, 241, 0.1);
  font-size: 0.875rem;
}
.result-row:last-child {
  border-bottom: none;
  font-weight: 700;
  color: var(--accent-hover);
  font-size: 1rem;
  padding-top: 0.75rem;
}
.result-row span:first-child {
  color: var(--muted);
}
.result-green {
  color: var(--green) !important;
}

/* ---- Output / Code ---- */
.output-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 300px;
  overflow-y: auto;
  position: relative;
}
.copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.375rem 0.625rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-family: var(--font);
  cursor: pointer;
  transition: all 0.2s;
}
.copy-btn:hover {
  color: var(--text);
  border-color: var(--accent);
}

/* ---- Tab bar ---- */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
  gap: 0;
}
.tab-btn {
  flex: 1;
  padding: 0.625rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-family: var(--font);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}
.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.tab-btn:hover {
  color: var(--text);
}
.tab-pane {
  display: none;
}
.tab-pane.active {
  display: block;
}

/* ---- FAQ ---- */
.faq {
  margin-top: 3rem;
}
.faq h2 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
}
details {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  padding: 1rem 1.25rem;
  transition: border-color 0.2s;
}
details:hover {
  border-color: var(--border-hover);
}
details[open] {
  border-color: var(--accent);
}
summary {
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
summary::-webkit-details-marker {
  display: none;
}
summary::before {
  content: '+';
  color: var(--accent);
  font-weight: 700;
  font-size: 1.1rem;
  min-width: 1rem;
}
details[open] summary::before {
  content: '−';
}
details p {
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  color: var(--muted);
  line-height: 1.75;
}

/* ---- Ad slot ---- */
.ad-slot {
  background: transparent;
  border: 0;
  border-radius: var(--radius-sm);
  padding: 0;
  text-align: center;
  color: var(--dim);
  font-size: 0.75rem;
  margin: 1.5rem 0;
  display: none;
}

.ad-slot:not([hidden]) {
  display: block;
}

.ad-slot:empty {
  display: none !important;
}

.ad-slot.ad-slot--loading {
  display: block !important;
  min-height: 96px;
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
}

.ad-slot .ad-debug-inline {
  margin: 0.35rem auto;
  padding: 0.3rem 0.45rem;
  display: inline-block;
  border: 1px solid #2f3e57;
  border-radius: 6px;
  background: rgba(12, 18, 28, 0.85);
  color: #c9d9f5;
  font-size: 11px;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

#mtdev-ads-debug {
  position: fixed;
  right: 0.75rem;
  bottom: 0.75rem;
  width: min(360px, calc(100vw - 1.5rem));
  max-height: 46vh;
  z-index: 1200;
  background: rgba(7, 9, 12, 0.95);
  border: 1px solid #384152;
  border-radius: 10px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
  color: #dbe3f0;
  font-size: 12px;
  line-height: 1.45;
  padding: 0.6rem;
}

#mtdev-ads-debug strong {
  display: block;
  margin-bottom: 0.4rem;
  color: #9cc0ff;
  font-weight: 700;
}

#mtdev-ads-debug .ad-debug-log {
  overflow: auto;
  max-height: calc(46vh - 2rem);
}

#mtdev-ads-debug .ad-debug-line {
  padding: 0.2rem 0;
  border-top: 1px dashed rgba(156, 192, 255, 0.18);
  word-break: break-word;
}

#mtdev-ads-debug .ad-debug-line:first-child {
  border-top: 0;
}

/* ---- Related Tools ---- */
.related-tools {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.related-tools-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.875rem;
}
.related-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 0.625rem;
}
.related-tool-card {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 0.875rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border);
  background: var(--card);
  text-decoration: none;
  color: var(--text);
  font-size: 0.8125rem;
  font-weight: 500;
  transition:
    border-color 0.2s,
    background 0.2s;
}
.related-tool-card:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  color: var(--accent);
}
.related-tool-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.tool-icon-image,
.related-tool-icon-image {
  width: 28px;
  height: 28px;
  display: inline-block;
  object-fit: contain;
  flex-shrink: 0;
}

/* ---- Cookie banner ---- */
.cookie-banner {
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  z-index: 1000;
  background: rgba(9, 9, 14, 0.96);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
}

.cookie-banner-content {
  max-width: 1024px;
  margin: 0 auto;
  padding: 1rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.cookie-banner-title {
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.cookie-banner-copy {
  font-size: 0.8125rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.cookie-banner-link {
  font-size: 0.8125rem;
  color: var(--accent-hover);
  text-decoration: none;
}

.cookie-banner-link:hover {
  text-decoration: underline;
}

.cookie-banner-actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.cookie-btn {
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
}

.cookie-btn-secondary {
  background: transparent;
  color: var(--text);
}

.cookie-btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ---- Footer ---- */
.tool-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
}
.tool-footer-inner {
  max-width: 1024px;
  margin: 0 auto;
  display: grid;
  gap: 0.75rem;
  justify-items: center;
  text-align: center;
  font-size: 0.75rem;
  color: var(--dim);
}
.tool-footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 600;
}
.tool-footer-brand img {
  width: auto;
  height: 24px;
  display: block;
}
.tool-footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.9rem;
}
.tool-footer-meta {
  color: var(--dim);
  font-size: 0.72rem;
}
.tool-footer a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.tool-footer a:hover {
  color: var(--accent);
}

/* ---- Tools home ---- */
.tools-home .tool-container {
  max-width: 1120px;
  padding-left: 2.25rem;
  padding-right: 2.25rem;
}
.tools-home-search {
  margin: 1.5rem 0 1.25rem;
}
.tools-home-search input {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}
.tools-home-sections {
  display: grid;
  gap: 2rem;
}
.tools-home-section-title {
  font-size: 1.2rem;
  margin-bottom: 0.3rem;
}
.tools-home-section-sub {
  color: var(--muted);
  margin-bottom: 0.85rem;
  font-size: 0.88rem;
}
.tools-home-actions {
  margin-top: 0.9rem;
  display: flex;
  justify-content: center;
}
.tools-home-show-btn {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.tools-home-show-btn:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}
.tools-home-empty {
  margin-top: 1rem;
  color: var(--muted);
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  text-align: center;
}
.tools-home-empty.hidden {
  display: none;
}

/* Portfolio-aligned tool cards (hub) */
.tools-home-section__header {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.tools-home-section__cat-icon {
  flex-shrink: 0;
  border-radius: 8px;
  object-fit: contain;
}
.tools-home-section-count {
  font-weight: 400;
  font-size: 0.9rem;
  color: var(--dim);
}

.hub-project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.hub-project-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--card);
  padding: 1.5rem;
  transition:
    border-color 0.25s ease,
    background 0.25s ease,
    box-shadow 0.25s ease,
    transform 0.2s ease;
}
.hub-project-card:hover {
  border-color: var(--border-strong);
  background: var(--card-hover-bg);
  box-shadow: 0 12px 40px rgba(99, 102, 241, 0.08);
  transform: translateY(-2px);
}
.hub-project-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.hub-project-card__icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: contain;
}
.hub-project-card__badge {
  flex-shrink: 0;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.25rem 0.55rem;
  border-radius: 9999px;
  color: #fff;
  line-height: 1.2;
  max-width: 11rem;
  text-align: center;
}
.hub-project-card__title {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--text);
  line-height: 1.35;
}
.hub-project-card:hover .hub-project-card__title {
  color: var(--accent);
}
.hub-project-card__tagline {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--text-secondary);
  margin: 0 0 1rem;
}
.hub-project-card__cta {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.8125rem;
  color: var(--dim);
}
.hub-project-card:hover .hub-project-card__cta {
  color: var(--accent);
}
.hub-project-card__arrow {
  transition: transform 0.2s ease;
}
.hub-project-card:hover .hub-project-card__arrow {
  transform: translateX(4px);
}

.tools-grid-two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (max-width: 768px) {
  .tools-home .tool-container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .tool-nav {
    padding: 0.7rem 1rem;
  }

  .tool-nav-inner {
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .tool-nav-brand {
    min-width: 0;
  }

  .tool-nav-name {
    font-size: 0.875rem;
  }

  .tool-nav-menu-toggle {
    display: inline-flex;
    margin-left: 0;
    order: 3;
  }

  .theme-toggle-btn {
    flex-shrink: 0;
    order: 2;
    margin-left: auto;
  }

  .tool-nav-links.tool-nav-links--collapsible {
    order: 4;
  }

  .tool-nav-links.tool-nav-links--collapsible {
    width: 100%;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    padding-top: 0.3rem;
  }

  .tool-nav-links.tool-nav-links--collapsible.is-open {
    display: flex;
  }

  .tool-nav-links.tool-nav-links--collapsible a {
    width: 100%;
    font-size: 0.9rem;
    padding: 0.2rem 0;
  }
}

/* ---- Structured tool content ---- */
.tool-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 1.2rem 0 0.7rem;
  color: var(--text);
}
.formula-card {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: var(--radius-sm);
  padding: 1rem;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.65;
}

.tool-steps,
.tool-bullets {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.55rem;
}

.tool-steps li,
.tool-bullets li {
  color: var(--muted);
}

.tool-freshness-note {
  margin-top: 1.1rem;
  font-size: 0.78rem;
  color: var(--dim);
}
.example-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}
.example-card {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
}
.example-card h3 {
  font-size: 0.9rem;
  margin: 0 0 0.4rem;
  color: var(--text);
}
.example-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .row,
  .row-3 {
    grid-template-columns: 1fr;
  }
  .btn-row {
    flex-direction: column;
  }
  .tool-header h1 {
    font-size: 1.5rem;
  }
  .tool-nav-links {
    gap: 0.75rem;
  }
  .cookie-banner-content {
    flex-direction: column;
    align-items: stretch;
  }
  .cookie-banner-actions {
    width: 100%;
  }
  .cookie-btn {
    flex: 1;
  }
  .tools-grid-two-col,
  .example-grid {
    grid-template-columns: 1fr;
  }
}

/* ─── Utility Classes (avoid inline styles) ─── */
.mt-1-5 {
  margin-top: 1.5rem;
}
.overflow-x {
  overflow-x: auto;
}
.hidden {
  display: none;
}

.amort-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 0.5rem;
}
.amort-table thead tr {
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}
.amort-table th,
.amort-table td {
  padding: 0.5rem;
}
.amort-table th:first-child,
.amort-table td:first-child {
  text-align: left;
}
.amort-table th:not(:first-child),
.amort-table td:not(:first-child) {
  text-align: right;
}

.tool-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 1rem;
}

.section-label {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 1rem 0 0.5rem;
}

.divider {
  border-color: var(--border);
  margin: 1.5rem 0;
}

.file-input {
  color: var(--muted);
}

.mono-input {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
}

.small-text {
  font-size: 0.85rem;
}
.mt-1 {
  margin-top: 1rem;
}
.mt-half {
  margin-top: 0.5rem;
}
.min-h-100 {
  min-height: 100px;
}

.btn-row-wrap {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.accent-link {
  color: var(--accent);
}
.compare-heading {
  color: var(--text);
}
.divider-lg {
  border-color: var(--border);
  margin: 2rem 0;
}

/* ---- API / programmatic CTA (tools home) ---- */
.api-banner {
  margin-top: 2.25rem;
  margin-bottom: 2rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}
.api-banner__inner {
  max-width: 100%;
  padding: 1.5rem 1.75rem 1.65rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.65rem;
}
.api-banner h3,
.api-banner__inner h3 {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0;
  line-height: 1.3;
}
.api-banner__lede {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--text-secondary);
  max-width: 42rem;
}
.api-banner__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.35rem;
  width: 100%;
}
.api-banner__btn {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  width: auto !important;
  min-width: 9.5rem;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
  text-decoration: none;
  flex: 0 0 auto;
}
@media (min-width: 520px) {
  .api-banner__actions {
    width: auto;
  }
}

/* ---- Tools home: cluster hub cards ---- */
.cluster-hub-section {
  margin-bottom: 2.5rem;
}
.cluster-hub-section__title {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  color: var(--text);
}
.cluster-hub-section__intro {
  margin: 0 0 1.25rem;
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 40rem;
  line-height: 1.55;
}
.cluster-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}
.cluster-hub-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.15rem 1.2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  text-decoration: none;
  color: inherit;
  transition:
    border-color 0.2s,
    background 0.2s,
    box-shadow 0.2s,
    transform 0.2s;
}
.cluster-hub-card:hover {
  border-color: var(--border-strong);
  background: var(--card-hover-bg);
  box-shadow: 0 10px 32px rgba(99, 102, 241, 0.07);
  transform: translateY(-2px);
}
.cluster-hub-card__icon {
  flex-shrink: 0;
  border-radius: 10px;
}
.cluster-hub-card__body {
  min-width: 0;
}
.cluster-hub-card__title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.35rem;
  color: var(--text);
}
.cluster-hub-card:hover .cluster-hub-card__title {
  color: var(--accent);
}
.cluster-hub-card__text {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-secondary);
  margin: 0 0 0.5rem;
}
.cluster-hub-card__cta {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--dim);
  letter-spacing: 0.02em;
}
.cluster-hub-card:hover .cluster-hub-card__cta {
  color: var(--accent);
}

/* ---- Cluster pages: embedded calculators ---- */
.cluster-embed-section {
  margin: 1.5rem 0 2rem;
}
.cluster-embed-section__title {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
}
.cluster-embed-section__hint {
  margin: 0 0 1.25rem;
  font-size: 0.875rem;
  color: var(--muted);
  max-width: 42rem;
  line-height: 1.55;
}
.cluster-embed-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.cluster-embed-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
}
.cluster-embed-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem 1rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.cluster-embed-card__step {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
}
.cluster-embed-card__title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
}
.cluster-embed-card__open {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
}
.cluster-embed-card__open:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}
.cluster-embed-frame-wrap {
  position: relative;
  width: 100%;
  min-height: 420px;
  height: 62vh;
  max-height: 820px;
  background: var(--bg);
}
.cluster-embed-frame-wrap iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: var(--bg);
}

.cluster-workflow-card {
  margin-bottom: 1.5rem;
}
.cluster-workflow-card h2 {
  font-size: 1.05rem;
  margin-bottom: 0.75rem;
}
.cluster-workflow-card .faq {
  margin-top: 0;
}

/* Embedded tool chrome: hide nav/footer/ads/related in iframes (?embed=1) */
[data-embed='1'] .tool-nav,
[data-embed='1'] .tool-footer,
[data-embed='1'] .ad-slot,
[data-embed='1'] .related-tools,
[data-embed='1'] #mtdev-cookie-banner {
  display: none !important;
}
[data-embed='1'] .tool-page {
  min-height: auto;
}
[data-embed='1'] .tool-container {
  padding-top: 1rem;
  padding-bottom: 2rem;
}