:root {
  --cf-orange: #f48120;
  --cf-orange-dark: #c95000;
  --cf-orange-soft: #fff3e8;
  --cf-ink: #0f0f0f;
  --cf-ink-2: #2f2f2f;
  --cf-muted: #6b6b6b;
  --cf-border: #e4e1dc;
  --cf-border-strong: #d6d1ca;
  --cf-page: #fbfaf7;
  --cf-surface: #ffffff;
  --cf-surface-alt: #f6f6f3;
  --cf-success: #137333;
  --cf-danger: #b3261e;
  --shadow-sm: 0 1px 2px rgba(15, 15, 15, 0.04);
  --shadow-md: 0 8px 24px rgba(15, 15, 15, 0.06);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--cf-ink);
  background:
    linear-gradient(180deg, #ffffff 0, var(--cf-page) 360px),
    var(--cf-page);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.site-header {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px 22px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 40px;
  padding-bottom: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  color: var(--cf-ink);
  font-weight: 750;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.tool-pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  color: var(--cf-ink-2);
  background: var(--cf-surface-alt);
  border: 1px solid var(--cf-border);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 650;
}

.hero-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  align-items: end;
  gap: 28px;
  padding: 28px 0 22px;
  border-top: 1px solid var(--cf-border);
}

.site-header h1 {
  max-width: 820px;
  margin: 0;
  color: var(--cf-ink);
  font-size: clamp(2rem, 4.6vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.06em;
}

.lede {
  max-width: 700px;
  margin: 16px 0 0;
  color: var(--cf-ink-2);
  font-size: clamp(0.98rem, 1.25vw, 1.12rem);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--cf-orange-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.header-card {
  padding: 18px;
  background: var(--cf-surface);
  border: 1px solid var(--cf-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.header-card span,
.header-card strong {
  display: block;
}

.header-card span {
  color: var(--cf-muted);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.header-card strong {
  margin-top: 6px;
  color: var(--cf-ink);
  font-size: 1.18rem;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.app-shell {
  max-width: 1200px;
  margin: 0 auto 48px;
  padding: 0 24px;
}

.tabs {
  display: inline-flex;
  gap: 2px;
  padding: 4px;
  background: var(--cf-surface);
  border: 1px solid var(--cf-border);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
}

.tab-button {
  min-height: 44px;
  padding: 0 16px;
  color: var(--cf-muted);
  background: transparent;
  border: 0;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 750;
}

.tab-button:hover {
  color: var(--cf-ink);
  background: var(--cf-surface-alt);
}

.tab-button.is-active {
  color: #ffffff;
  background: var(--cf-ink);
}

.tab-button:focus-visible,
.primary-button:focus-visible,
.secondary-button:focus-visible,
.text-button:focus-visible,
.guide-section summary:focus-visible,
.preview-body:focus-visible {
  outline: 2px solid var(--cf-orange-dark);
  outline-offset: 2px;
}

.tab-panel {
  margin-top: 14px;
  padding: clamp(16px, 2.4vw, 26px);
  background: var(--cf-surface);
  border: 1px solid var(--cf-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.panel-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 460px);
  align-items: end;
  gap: 22px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--cf-border);
}

.panel-intro h2 {
  margin: 0;
  color: var(--cf-ink);
  font-size: clamp(1.45rem, 2.5vw, 2.15rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.panel-intro p:last-child {
  margin: 0;
  color: var(--cf-muted);
  font-size: 0.94rem;
}

.guide-content {
  margin-top: 20px;
  padding: clamp(16px, 2.4vw, 28px);
  background: #ffffff;
  border: 1px solid var(--cf-border);
  border-radius: var(--radius-md);
}

.guide-content h1,
.guide-content h2,
.guide-content h3 {
  color: var(--cf-ink);
  letter-spacing: -0.035em;
}

.guide-content h1 {
  margin: 0 0 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--cf-border);
  font-size: clamp(1.6rem, 3vw, 2.45rem);
  line-height: 1.08;
}

.guide-content h2 {
  margin: 28px 0 8px;
  padding-left: 10px;
  border-left: 3px solid var(--cf-orange);
  font-size: 1.28rem;
}

.guide-content h3 {
  margin: 18px 0 6px;
  font-size: 1rem;
}

.guide-section {
  margin: 12px 0;
  background: #ffffff;
  border: 1px solid var(--cf-border);
  border-radius: var(--radius-md);
}

.guide-section summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  color: var(--cf-ink);
  cursor: pointer;
  list-style: none;
}

.guide-section summary::-webkit-details-marker {
  display: none;
}

.guide-content .guide-section-title {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 1.05rem;
  font-weight: 750;
  letter-spacing: -0.025em;
}

.guide-section-cue {
  flex-shrink: 0;
  color: var(--cf-orange-dark);
  font-size: 0.78rem;
  font-weight: 750;
}

.guide-section-cue::after {
  content: "Show";
}

.guide-section[open] .guide-section-cue::after {
  content: "Hide";
}

.guide-section-body {
  padding: 0 16px 16px;
  border-top: 1px solid var(--cf-border);
}

.guide-content p,
.guide-content li {
  color: var(--cf-ink-2);
}

.guide-content p {
  max-width: 920px;
}

.guide-content blockquote {
  margin: 16px 0;
  padding: 14px 16px;
  background: var(--cf-orange-soft);
  border-left: 3px solid var(--cf-orange);
  border-radius: var(--radius-sm);
}

.guide-content table {
  display: block;
  width: 100%;
  margin: 16px 0;
  overflow-x: auto;
  border-collapse: collapse;
}

.guide-content th,
.guide-content td {
  min-width: 130px;
  padding: 10px;
  border: 1px solid var(--cf-border);
  text-align: left;
  vertical-align: top;
}

.guide-content th {
  color: #ffffff;
  background: var(--cf-ink);
}

.guide-content tr:nth-child(even) td {
  background: var(--cf-surface-alt);
}

.builder-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.9fr) minmax(0, 1.45fr);
  gap: 16px;
  margin-top: 20px;
}

.token-card,
.export-card,
.preview-card {
  background: var(--cf-surface);
  border: 1px solid var(--cf-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.token-card,
.export-card {
  padding: 18px;
}

.card-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}

.card-heading h3 {
  margin: 0;
  color: var(--cf-ink);
  font-size: 0.96rem;
  letter-spacing: -0.02em;
}

.text-button {
  min-height: 44px;
  min-width: 44px;
  padding: 0 8px;
  color: var(--cf-orange-dark);
  background: transparent;
  border: 0;
  border-radius: 999px;
  font-size: 0.84rem;
  font-weight: 750;
}

.text-button:hover {
  color: var(--cf-ink);
}

.token-fields {
  display: grid;
  gap: 12px;
}

.field-group {
  display: grid;
  gap: 6px;
}

.field-group label,
.select-label {
  color: var(--cf-ink);
  font-size: 0.8rem;
  font-weight: 750;
}

.field-group input,
.field-group textarea,
.saved-template-name,
.template-select {
  width: 100%;
  color: var(--cf-ink);
  background: #ffffff;
  border: 1px solid var(--cf-border-strong);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 120ms ease, box-shadow 120ms ease, background-color 120ms ease;
}

.field-group input,
.saved-template-name,
.template-select {
  min-height: 44px;
  padding: 0 12px;
}

.field-group textarea {
  min-height: 84px;
  padding: 10px 12px;
  resize: vertical;
}

.field-group input::placeholder,
.field-group textarea::placeholder,
.saved-template-name::placeholder {
  color: #8d8d8d;
}

.field-group input:focus,
.field-group textarea:focus,
.saved-template-name:focus,
.template-select:focus {
  border-color: var(--cf-ink);
  box-shadow: none;
  outline: 2px solid var(--cf-ink);
  outline-offset: 1px;
}

.saved-template-card {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--cf-border);
}

.saved-template-heading {
  align-items: flex-start;
  margin-bottom: 10px;
}

.saved-template-heading p {
  margin: 4px 0 0;
  color: var(--cf-muted);
  font-size: 0.86rem;
}

.save-template-row {
  display: grid;
  gap: 8px;
}

.saved-template-list {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.saved-template-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px;
  background: var(--cf-surface-alt);
  border: 1px solid var(--cf-border);
  border-radius: var(--radius-sm);
}

.saved-template-item strong,
.saved-template-item span {
  display: block;
}

.saved-template-item span,
.empty-saved-template {
  color: var(--cf-muted);
  font-size: 0.84rem;
}

.empty-saved-template {
  margin: 0;
}

.saved-template-actions {
  display: flex;
  flex-shrink: 0;
  gap: 10px;
}

.danger-button {
  color: var(--cf-danger);
}

.danger-button:hover {
  color: var(--cf-danger);
}

.template-description {
  margin: 8px 0 14px;
  color: var(--cf-muted);
}

.preview-card {
  overflow: hidden;
}

.preview-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  color: var(--cf-ink);
  background: var(--cf-surface-alt);
  border-bottom: 1px solid var(--cf-border);
}

.preview-heading span,
.preview-heading strong {
  display: block;
}

.preview-heading span {
  color: var(--cf-muted);
  font-size: 0.72rem;
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.preview-heading strong {
  margin-top: 3px;
}

.placeholder-badge {
  align-self: flex-start;
  padding: 6px 9px;
  color: var(--cf-ink) !important;
  background: var(--cf-orange-soft);
  border: 1px solid rgba(244, 129, 32, 0.35);
  border-radius: 999px;
  font-size: 0.68rem !important;
  font-weight: 800 !important;
  white-space: nowrap;
}

.subject-row {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: var(--cf-orange-soft);
  border-bottom: 1px solid var(--cf-border);
}

.subject-row span {
  color: var(--cf-orange-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.subject-row p {
  margin: 0;
  color: var(--cf-ink);
  font-weight: 750;
}

.preview-body {
  min-height: 340px;
  max-height: 580px;
  margin: 0;
  padding: 16px;
  overflow: auto;
  color: var(--cf-ink-2);
  background: #ffffff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.9rem;
  line-height: 1.56;
  white-space: pre-wrap;
}

.export-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.primary-button,
.secondary-button {
  min-height: 44px;
  padding: 0 14px;
  border-radius: 999px;
  font-weight: 800;
  transition: transform 80ms ease, background-color 120ms ease, border-color 120ms ease;
}

.primary-button {
  color: #ffffff;
  background: var(--cf-orange-dark);
  border: 1px solid var(--cf-orange-dark);
}

.primary-button:hover {
  background: #a94400;
  border-color: #a94400;
}

.secondary-button {
  color: var(--cf-ink);
  background: #ffffff;
  border: 1px solid var(--cf-border-strong);
}

.secondary-button:hover {
  background: var(--cf-surface-alt);
  border-color: #b9b9b9;
}

.primary-button:active,
.secondary-button:active {
  transform: translateY(1px);
}

.status-message {
  min-height: 20px;
  margin: 12px 0 0;
  color: var(--cf-muted);
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  .hero-content,
  .panel-intro,
  .builder-grid {
    grid-template-columns: 1fr;
  }

  .header-card {
    max-width: 420px;
  }
}

@media (max-width: 560px) {
  .site-header,
  .app-shell {
    padding-inline: 16px;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
    padding-bottom: 20px;
  }

  .hero-content {
    padding-top: 22px;
  }

  .tabs {
    display: grid;
    width: 100%;
    grid-template-columns: 1fr 1fr;
  }

  .tab-button {
    padding-inline: 10px;
  }

  .tab-panel,
  .guide-content,
  .token-card,
  .export-card,
  .preview-card {
    border-radius: var(--radius-md);
  }

  .saved-template-item {
    align-items: flex-start;
    flex-direction: column;
  }

  .preview-heading {
    flex-direction: column;
  }

  .placeholder-badge {
    white-space: normal;
  }

  .export-actions button {
    width: 100%;
  }
}