:root {
  --ink: #0c1222;
  --ink-soft: #3d4a5c;
  --muted: #6b7a8d;
  --paper: #e8eef4;
  --surface: #ffffff;
  --surface-muted: #f1f5f9;
  --border: #d5dde8;
  --accent: #0f766e;
  --accent-hover: #0d9488;
  --accent-soft: #ecfdf8;
  --accent-border: #99f6e4;
  --amber: #c2410c;
  --level-subtle: #059669;
  --level-moderate: #d97706;
  --level-creative: #e11d48;
  --shadow: 0 1px 2px rgb(12 18 34 / 4%), 0 8px 24px rgb(12 18 34 / 6%);
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "Figtree", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: var(--ink);
  font-family: var(--font-body);
  background-color: var(--paper);
  background-image:
    radial-gradient(ellipse 80% 50% at 0% -10%, rgb(15 118 110 / 12%), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgb(194 65 12 / 8%), transparent 50%),
    linear-gradient(180deg, #eef3f8 0%, var(--paper) 40%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgb(255 255 255 / 80%);
  backdrop-filter: blur(10px);
}

.site-header__inner,
.site-footer__inner,
.page {
  width: 100%;
  max-width: 48rem;
  margin: 0 auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  text-decoration: none;
  color: inherit;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.brand__dot {
  width: 0.375rem;
  height: 0.375rem;
  border-radius: 999px;
  background: var(--accent);
  transform: translateY(-2px);
  transition: transform 0.15s;
}

.brand:hover .brand__dot {
  transform: translateY(-2px) scale(1.25);
}

.header-note {
  display: none;
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted);
}

@media (min-width: 640px) {
  .header-note {
    display: block;
  }
}

.page {
  flex: 1;
  padding-top: 2rem;
  padding-bottom: 3rem;
}

@media (min-width: 640px) {
  .page {
    padding-top: 3rem;
  }
}

.hero {
  margin-bottom: 2rem;
}

.hero__eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4vw, 2.35rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.hero__lead {
  margin: 0.75rem 0 0;
  max-width: 36rem;
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

.tool {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.panel {
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--surface);
  padding: 1.35rem 1.35rem 1.5rem;
  box-shadow: var(--shadow);
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
  font-size: 1.05rem;
  font-weight: 650;
  color: var(--ink);
}

.icon-accent {
  width: 1.15rem;
  height: 1.15rem;
  color: var(--accent);
  flex-shrink: 0;
}

.field-textarea {
  width: 100%;
  resize: none;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--surface);
  padding: 0.85rem 1rem;
  font: inherit;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--ink);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgb(15 118 110 / 18%);
}

.examples {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.examples__label {
  font-size: 0.875rem;
  color: var(--muted);
}

.chip {
  border: 1px solid transparent;
  border-radius: 0.5rem;
  background: var(--surface-muted);
  padding: 0.3rem 0.55rem;
  font: inherit;
  font-size: 0.8rem;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

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

.settings-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .settings-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

.fieldset__legend {
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-soft);
}

.seg-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.seg-btn {
  border: 1px solid transparent;
  border-radius: 0.65rem;
  background: var(--surface-muted);
  padding: 0.55rem 0.4rem;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.seg-btn:hover {
  background: #e2e8f0;
}

.seg-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.seg-btn.is-active {
  background: var(--accent);
  color: #fff;
}

.seg-btn.is-active:hover {
  background: var(--accent-hover);
  color: #fff;
}

.seg-btn.is-level-subtle.is-active {
  background: var(--level-subtle);
}

.seg-btn.is-level-moderate.is-active {
  background: var(--level-moderate);
}

.seg-btn.is-level-creative.is-active {
  background: var(--level-creative);
}

.toggles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

@media (min-width: 640px) {
  .toggles {
    grid-template-columns: repeat(4, 1fr);
  }
}

.toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

.checkbox {
  width: 1rem;
  height: 1rem;
  accent-color: var(--accent);
  cursor: pointer;
}

.compare {
  display: grid;
  gap: 1rem;
  margin-bottom: 1rem;
}

@media (min-width: 640px) {
  .compare {
    grid-template-columns: 1fr 1fr;
  }
}

.compare__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.compare__label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
}

.compare__label--enhanced {
  color: var(--accent);
}

.compare__chars {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.75rem;
  color: var(--muted);
}

.compare__delta {
  color: var(--accent);
}

.compare__box {
  min-height: 5.5rem;
  border-radius: 0.75rem;
  background: var(--surface-muted);
  padding: 0.75rem;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--ink-soft);
}

.compare__box--enhanced {
  border: 1px solid var(--accent-border);
  background: var(--accent-soft);
  color: var(--ink);
}

.actions {
  display: flex;
  gap: 0.75rem;
}

.btn-primary {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: none;
  border-radius: 0.75rem;
  background: var(--accent);
  padding: 0.85rem 1rem;
  font: inherit;
  font-weight: 650;
  color: #fff;
  cursor: pointer;
  transition: background 0.15s, transform 0.12s;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(1px);
}

.btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--surface-muted);
  padding: 0.85rem;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 0.15s;
}

.btn-ghost:hover {
  background: #e2e8f0;
}

.btn-ghost:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-ghost svg,
.btn-primary svg {
  width: 1.25rem;
  height: 1.25rem;
}

.tips-panel {
  border: 1px solid var(--accent-border);
  border-radius: 1rem;
  background: linear-gradient(135deg, var(--accent-soft), #fff7ed);
  padding: 1.25rem 1.35rem;
}

.tips-panel h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.75rem;
  font-size: 1rem;
  color: var(--ink);
}

.tips-panel ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
  font-size: 0.875rem;
  line-height: 1.5;
}

.tips-panel strong {
  color: var(--ink);
}

.icon-amber {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--amber);
}

.ad-slot {
  display: none;
  min-height: 90px;
  width: 100%;
  margin: 2rem 0;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--surface-muted);
}

.ad-slot.is-ready {
  display: flex;
}

.seo {
  margin-top: 3.5rem;
  display: flex;
  flex-direction: column;
  gap: 3rem;
  color: var(--ink-soft);
}

.section-heading {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.seo p {
  margin: 0;
  line-height: 1.65;
}

.seo p + p {
  margin-top: 0.75rem;
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.steps li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.steps__num {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 700;
}

.steps h3 {
  margin: 0;
  font-size: 1rem;
  color: var(--ink);
}

.steps p {
  margin-top: 0.15rem;
  font-size: 0.875rem;
}

.feature-grid {
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 640px) {
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.feature-card {
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--surface);
  padding: 1rem 1.1rem;
}

.feature-card h3 {
  margin: 0;
  font-size: 1rem;
  color: var(--ink);
}

.feature-card p {
  margin-top: 0.35rem;
  font-size: 0.875rem;
}

.pro-tip {
  border: 1px solid #bbf7d0;
  border-radius: 0.85rem;
  background: #f0fdf4;
  padding: 1.1rem 1.2rem;
}

.pro-tip h3 {
  margin: 0;
  color: var(--ink);
}

.pro-tip p {
  margin-top: 0.5rem;
  font-size: 0.875rem;
}

.faq {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--surface);
  padding: 1rem 1.1rem;
}

.faq-summary {
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-summary::before {
  content: "+";
  display: inline-block;
  width: 1.2em;
  margin-right: 0.35rem;
  color: var(--accent);
  font-weight: 700;
}

details[open] .faq-summary::before {
  content: "–";
}

.faq-item p {
  margin-top: 0.75rem;
  font-size: 0.875rem;
}

.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 2rem;
  padding-bottom: 2rem;
  font-size: 0.875rem;
  color: var(--muted);
}

@media (min-width: 640px) {
  .site-footer__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.site-footer p {
  margin: 0;
}

.animate-rise {
  animation: rise 0.45s ease both;
}

.animate-rise.delay-1 {
  animation-delay: 40ms;
}

.animate-rise.delay-2 {
  animation-delay: 100ms;
}

.animate-rise.delay-3 {
  animation-delay: 160ms;
}

.animate-rise.delay-4 {
  animation-delay: 220ms;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .animate-rise {
    animation: none;
  }
}