:root {
  --color-text: #1a1a1a;
  --color-bg: #ffffff;
  --color-link: #0b4f6c;
  --color-link-hover: #083d54;
  --color-border: #d0d7de;
  --color-accent: #0b4f6c;
  --color-green: #1b6b3a;
  --color-amber: #8a5a00;
  --color-red: #9b1c1c;
  --color-muted: #4a5568;
  --color-surface: #f8fafc;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace;
  --max-width: 48rem;
  --focus-ring: 3px solid #0b4f6c;
  --radius: 0.375rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-text: #e8edf2;
    --color-bg: #0f1419;
    --color-link: #6ec4e8;
    --color-link-hover: #9dd8f5;
    --color-border: #2d3748;
    --color-accent: #6ec4e8;
    --color-green: #4ade80;
    --color-amber: #fbbf24;
    --color-red: #f87171;
    --color-muted: #94a3b8;
    --color-surface: #1a2332;
    --focus-ring: 3px solid #6ec4e8;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

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

html { font-size: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

.skip-link {
  position: absolute;
  top: -3rem;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--color-accent);
  color: #fff;
  z-index: 100;
  text-decoration: none;
  border-radius: var(--radius);
}

.skip-link:focus { top: 1rem; outline: var(--focus-ring); outline-offset: 2px; }

.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 1.5rem;
  background: var(--color-surface);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-title {
  font-size: 1.1rem;
}

.fr-disclaimer-prominent {
  border-left-color: var(--color-accent);
  font-weight: 600;
}

.kit-link a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.kit-link a:hover {
  color: var(--color-link-hover);
}

.site-header nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  align-items: center;
}

.site-header nav a,
.site-header nav button {
  display: inline-block;
  min-height: 24px;
  min-width: 24px;
  padding: 0.35rem 0.25rem;
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 0.15em;
  background: none;
  border: none;
  font: inherit;
  cursor: pointer;
}

.site-header nav a:hover,
.site-header nav button:hover { color: var(--color-link-hover); }

.site-header nav a[aria-current="page"] { font-weight: 700; text-decoration-thickness: 2px; }

.lang-switch { display: flex; gap: 0.25rem; }

.lang-switch button {
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
  min-height: 24px;
}

.lang-switch button[aria-pressed="true"] {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem;
}

h1 { font-size: 1.75rem; line-height: 1.25; margin-top: 0; }

h2 { font-size: 1.35rem; margin-top: 2rem; }

h3 { font-size: 1.1rem; }

.notice {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-amber);
  padding: 0.75rem 1rem;
  margin: 1rem 0;
  font-size: 0.95rem;
}

.synthetic-label {
  background: var(--color-amber);
  color: #fff;
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 700;
  display: inline-block;
  border-radius: var(--radius);
  margin-bottom: 1rem;
}

@media (prefers-color-scheme: dark) {
  .synthetic-label { background: #92400e; }
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.5rem 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 24px;
  padding: 0.6rem 1.25rem;
  font: inherit;
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
}

.btn:focus { outline: var(--focus-ring); outline-offset: 2px; }

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

.btn-primary:hover { filter: brightness(1.1); }

.btn-secondary {
  background: transparent;
  color: var(--color-link);
  border-color: var(--color-link);
}

.btn-secondary:hover { background: var(--color-surface); }

.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 1rem 0;
  background: var(--color-bg);
}

label { display: block; font-weight: 600; margin-bottom: 0.35rem; }

textarea,
input[type="text"],
select {
  width: 100%;
  font: inherit;
  padding: 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 24px;
}

textarea { min-height: 6rem; resize: vertical; }

textarea:focus,
input:focus,
select:focus {
  outline: var(--focus-ring);
  outline-offset: 1px;
}

.field { margin-bottom: 1rem; }

.flag-list { list-style: none; padding: 0; margin: 0; }

.flag-item {
  display: flex;
  gap: 0.75rem;
  padding: 0.75rem;
  margin-bottom: 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  border-left-width: 4px;
}

.flag-item[data-category="numbers"] { border-left-color: var(--color-red); }
.flag-item[data-category="times"] { border-left-color: var(--color-amber); }
.flag-item[data-category="contact"] { border-left-color: #7c3aed; }
.flag-item[data-category="negation"] { border-left-color: var(--color-red); }
.flag-item[data-category="modality"] { border-left-color: var(--color-amber); }
.flag-item[data-category="names"] { border-left-color: #2563eb; }
.flag-item[data-category="untranslated"] { border-left-color: var(--color-muted); }
.flag-item[data-category="length"] { border-left-color: var(--color-muted); }

.flag-badge {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  white-space: nowrap;
  padding: 0.15rem 0.4rem;
  border-radius: 0.2rem;
  background: var(--color-surface);
}

.sms-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 480px) {
  .sms-grid { grid-template-columns: 1fr 1fr; }
}

.sms-stat { font-family: var(--font-mono); font-size: 0.95rem; }

.checklist { list-style: none; padding: 0; }

.checklist li { margin-bottom: 0.35rem; }

.checklist label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-weight: 400;
  cursor: pointer;
}

.checklist input { margin-top: 0.35rem; min-width: 20px; min-height: 20px; }

.progress-bar {
  display: block;
  width: 100%;
  height: 0.5rem;
  margin: 0.5rem 0;
  border: none;
  border-radius: var(--radius);
  background: var(--color-border);
  overflow: hidden;
  appearance: none;
}

.progress-bar::-webkit-progress-bar {
  background: var(--color-border);
  border-radius: var(--radius);
}

.progress-bar::-webkit-progress-value {
  background: var(--color-accent);
  border-radius: var(--radius);
}

.progress-bar::-moz-progress-bar {
  background: var(--color-accent);
  border-radius: var(--radius);
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem;
  margin-top: 3rem;
  font-size: 0.9rem;
  color: var(--color-muted);
  text-align: center;
}

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

.sources-list { font-size: 0.9rem; }

.sources-list a { word-break: break-word; }

[dir="rtl"] textarea,
[dir="rtl"] .message-box { text-align: right; }

.message-box {
  background: var(--color-surface);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  white-space: pre-wrap;
}

.hidden { display: none !important; }

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

.error-state {
  border-color: var(--color-red);
  color: var(--color-red);
}

.correct { color: var(--color-green); }
.incorrect { color: var(--color-red); }

.muted { color: var(--color-muted); font-size: 0.95rem; }

.warning-inline {
  border-left: 4px solid var(--color-amber);
  padding: 0.5rem 0.75rem;
  background: var(--color-surface);
  color: var(--color-amber);
  font-weight: 600;
}

.sms-highlight {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  white-space: pre-wrap;
  word-break: break-word;
  padding: 0.5rem;
  background: var(--color-surface);
  border-radius: var(--radius);
}

.ucs2-char {
  background: #fde68a;
  color: #1a1a1a;
  padding: 0 0.1rem;
  border-radius: 0.15rem;
}

@media (prefers-color-scheme: dark) {
  .ucs2-char { background: #854d0e; color: #fef3c7; }
}

.btn-small { font-size: 0.85rem; padding: 0.35rem 0.65rem; }

button:disabled,
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

@media print {
  .site-header,
  .site-footer,
  .hero-actions,
  .btn,
  .lang-switch,
  .skip-link,
  #live-translate-section { display: none !important; }
  body { font-size: 11pt; color: #000; background: #fff; }
  main { max-width: none; padding: 0; }
  .card { break-inside: avoid; border: 1px solid #ccc; }
}

@media (max-width: 320px) {
  main { padding: 1rem; }
  h1 { font-size: 1.5rem; }
}

/* Company mark in the site header */
.brand-lockup { display: inline-flex; align-items: center; gap: 0.6rem; }
.brand-lockup h1 { margin: 0; }
.brand-mark, .brand-mark img { display: block; width: 36px; height: 36px; flex: 0 0 auto; }