:root {
  --bg: linear-gradient(140deg, #f3f6ff 0%, #eef8ff 30%, #f6f2ff 70%, #fef7f3 100%);
  --surface: #ffffff;
  --surface-soft: #f7f8fc;
  --surface-strong: #f0f4ff;
  --text: #1f2937;
  --muted: #4b5563;
  --border: #d6dcf0;
  --accent: #4f46e5;
  --accent-strong: #4338ca;
  --accent-text: #ffffff;
  --ok: #067647;
  --warn: #b45309;
  --error: #b91c1c;
  --shadow: 0 14px 36px rgba(23, 37, 84, 0.12);
}

:root[data-theme="dark"] {
  --bg: radial-gradient(circle at top, #111827, #020617 58%, #00040f 100%);
  --surface: #0b1220;
  --surface-soft: #0f172a;
  --surface-strong: #1e293b;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --border: #334155;
  --accent: #60a5fa;
  --accent-strong: #93c5fd;
  --accent-text: #0b1220;
  --ok: #6ee7b7;
  --warn: #fcd34d;
  --error: #fda4af;
  --shadow: 0 14px 36px rgba(1, 10, 20, 0.45);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg: radial-gradient(circle at top, #111827, #020617 58%, #00040f 100%);
    --surface: #0b1220;
    --surface-soft: #0f172a;
    --surface-strong: #1e293b;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --border: #334155;
    --accent: #60a5fa;
    --accent-strong: #93c5fd;
    --accent-text: #0b1220;
    --ok: #6ee7b7;
    --warn: #fcd34d;
    --error: #fda4af;
    --shadow: 0 14px 36px rgba(1, 10, 20, 0.45);
  }
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 "Nunito", "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  min-height: 100vh;
}

.site-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1rem 1.15rem 3rem;
}

.skip-link {
  position: absolute;
  left: -10000px;
  top: 10px;
  background: var(--accent);
  color: var(--accent-text);
  padding: 0.75rem 1rem;
  border-radius: 0.6rem;
  z-index: 999;
}

.skip-link:focus-visible {
  left: 1rem;
}

.site-header {
  background: color-mix(in srgb, var(--surface) 90%, transparent);
  border: 1px solid var(--border);
  border-radius: 1rem;
  backdrop-filter: blur(4px);
  padding: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
}

.main-nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  text-decoration: underline;
}

.theme-toggle {
  margin-left: auto;
}

button,
input,
textarea {
  font: inherit;
}

button,
.pill {
  border: 1px solid transparent;
  border-radius: 0.7rem;
}

button {
  cursor: pointer;
  background: var(--accent);
  color: var(--accent-text);
  border-color: transparent;
  padding: 0.55rem 0.95rem;
  font-weight: 700;
}

button:hover,
button:focus-visible {
  filter: brightness(1.05);
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 40%, transparent);
  outline-offset: 2px;
}

.panel {
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: var(--shadow);
  padding: 1rem;
}

.hero {
  margin: 1.25rem 0 1rem;
}

h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 2.2vw, 2rem);
  line-height: 1.25;
}

h2,
h3,
h4 {
  margin-top: 0;
}

.eyebrow {
  color: var(--muted);
  margin-bottom: 0.35rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.tool-section {
  margin-top: 1rem;
  display: grid;
  gap: 1rem;
}

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

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.toolbar button {
  flex: 1 1 auto;
  min-width: 130px;
}

.inline {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.inline input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
}

label {
  display: block;
  color: var(--muted);
}

textarea {
  width: 100%;
  min-height: 190px;
  resize: vertical;
  border: 1px solid var(--border);
  background: var(--surface-soft);
  color: var(--text);
  border-radius: 0.75rem;
  padding: 0.8rem;
}

.small-grid {
  display: grid;
  gap: 0.7rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.limit-grid {
  display: grid;
  gap: 0.7rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.text-input-row {
  display: grid;
  gap: 0.5rem;
}

input[type="number"] {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--surface-soft);
  color: var(--text);
  border-radius: 0.5rem;
  padding: 0.55rem 0.65rem;
}

.status {
  min-height: 1.4rem;
  color: var(--ok);
  margin: 0;
}

.status.warning {
  color: var(--warn);
}

.status.error {
  color: var(--error);
}

.limit-status {
  color: var(--warn);
  min-height: 1.4rem;
}

.limit-exceeded {
  color: var(--error);
}

.result-grid {
  display: grid;
  gap: 0.65rem;
}

.result-grid .item {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  padding: 0.75rem 0.85rem;
}

.result-grid .item h3 {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.result-grid .item p {
  margin: 0.2rem 0 0;
  font-size: 1.15rem;
  font-weight: 700;
}

.muted-note {
  color: var(--muted);
  font-size: 0.9rem;
}

.top-words-panel ul {
  margin: 0.45rem 0 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.35rem;
  color: var(--text);
}

.top-words-panel li {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: baseline;
  gap: 0.5rem;
}

.top-words-panel li span {
  color: var(--muted);
}

.top-words-panel li em {
  color: var(--muted);
  font-style: normal;
  font-size: 0.85rem;
}

.faq {
  margin-top: 1rem;
}

.faq details {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  padding: 0.75rem 0.9rem;
}

.faq details + details {
  margin-top: 0.55rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
}

.faq p {
  margin: 0.65rem 0 0;
  color: var(--muted);
}

.page-note {
  margin-top: 1rem;
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  border-left: 4px solid var(--accent);
  padding: 0.8rem 0.95rem;
  border-radius: 0.65rem;
}

.site-footer {
  margin-top: 1.8rem;
  color: var(--muted);
  font-size: 0.93rem;
}

.site-footer a {
  color: var(--text);
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0.6rem 0 0;
}

.contact-list li {
  margin: 0.35rem 0;
}

@media (min-width: 760px) {
  .result-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 980px) {
  .site-shell {
    padding-inline: 2rem;
  }
}

@media (max-width: 680px) {
  .site-header,
  .inline {
    flex-direction: column;
    align-items: flex-start;
  }

  .theme-toggle {
    margin-left: 0;
  }

  .limit-grid,
  .small-grid {
    grid-template-columns: 1fr;
  }
}

/* Related tools */
.seo-link-block { color-scheme: light; margin-top: 4rem; padding: 3.25rem 1.25rem; color: #173328; background: #f2f7f4; border-block: 1px solid #dce8e1; font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
.seo-link-block * { box-sizing: border-box; }
.seo-link-block__inner { width: min(1120px, 100%); margin: 0 auto; }
.seo-link-block header { margin-bottom: 1.5rem; }
.seo-link-block header p { margin: 0 0 .4rem; color: #257050; font-size: .72rem; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
.seo-link-block header h2 { margin: 0; color: #173328; font-size: clamp(1.55rem, 3vw, 2.2rem); line-height: 1.15; letter-spacing: -.035em; }
.seo-link-block ul { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .65rem; margin: 0; padding: 0; list-style: none; }
.seo-link-block li { min-width: 0; }
.seo-link-block a { display: flex; min-height: 3.8rem; height: 100%; align-items: center; justify-content: space-between; gap: 1rem; padding: .85rem 1rem; color: #25463a; background: #fff; border: 1px solid #dce8e1; border-radius: .75rem; font-size: .88rem; font-weight: 700; line-height: 1.35; text-decoration: none; transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease; }
.seo-link-block a span { flex: 0 0 auto; color: #2d815d; font-size: 1rem; }
.seo-link-block a:hover { color: #0d5c3b; border-color: #78ad94; box-shadow: 0 8px 22px rgba(23, 51, 40, .08); transform: translateY(-2px); }
.seo-link-block a:focus-visible { outline: 3px solid rgba(45, 129, 93, .3); outline-offset: 3px; }
@media (max-width: 800px) { .seo-link-block ul { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .seo-link-block { padding: 2.5rem 1rem; } .seo-link-block ul { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .seo-link-block a { transition: none; } }