* { box-sizing: border-box; }

:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #172033;
  --muted: #697386;
  --border: #dfe4ec;
  --accent: #315efb;
  --accent-dark: #2447c9;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

a { color: inherit; }

.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.narrow { width: min(760px, calc(100% - 32px)); }

.site-header {
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  min-height: 64px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-weight: 900;
  font-size: 22px;
  text-decoration: none;
  letter-spacing: -.03em;
}

nav { display: flex; gap: 18px; flex-wrap: wrap; }
nav a { color: var(--text); text-decoration: none; font-size: 14px; }
nav a:hover, .text-link:hover { text-decoration: underline; }

.hero { padding: 72px 0 28px; text-align: center; }
.eyebrow { font-size: 12px; font-weight: 800; letter-spacing: .14em; color: var(--accent); }
h1 { margin: 6px 0 10px; font-size: clamp(38px, 7vw, 64px); line-height: 1.05; letter-spacing: -.04em; }
.page-title { font-size: clamp(36px, 6vw, 54px); }
.subtitle, .lead { color: var(--muted); font-size: 18px; }
.subtitle { margin: 0 auto 28px; }

.tool-card {
  text-align: left;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 12px 34px rgba(23, 32, 51, .08);
}

label { display: block; font-weight: 700; margin-bottom: 8px; }
.input-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; }

input[type="text"] {
  width: 100%; min-width: 0; font-size: 20px; padding: 14px 16px;
  border: 1px solid var(--border); border-radius: 10px; outline: none;
}
input[type="text"]:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(49,94,251,.12); }

button {
  border: 0; border-radius: 10px; background: var(--accent); color: #fff;
  padding: 0 20px; font-weight: 800; cursor: pointer;
}
button:hover { background: var(--accent-dark); }

.hint, .status { color: var(--muted); font-size: 14px; }
.options-panel { display: grid; gap: 10px; margin: 18px 0 8px; }

.check-row, .select-row {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px; background: #fafbfe;
}
.check-row { justify-content: flex-start; cursor: pointer; }
.check-row input { width: 18px; height: 18px; flex: 0 0 auto; }
.check-row span, .select-row span { display: grid; gap: 2px; }
.check-row small, .select-row small { color: var(--muted); font-weight: 400; }

select {
  border: 1px solid var(--border); border-radius: 8px; background: white;
  color: var(--text); padding: 9px 10px; font: inherit;
}

.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0; }
.filter { background: #edf1f8; color: var(--text); min-height: 36px; }
.filter.active { background: var(--text); color: #fff; }

.results-group { margin-top: 22px; }
.results-group h3 { margin-bottom: 10px; }
.count { color: var(--muted); font-weight: 500; font-size: .9em; }
.word-list { display: flex; flex-wrap: wrap; gap: 8px; }
.word { background: #f1f4f9; border: 1px solid var(--border); padding: 7px 10px; border-radius: 8px; font-weight: 650; }
.hidden { display: none; }

.content-section, .page-main { padding: 28px 0 64px; }
.page-main { min-height: 70vh; padding-top: 64px; }
.content-section h2, .page-main h2 { margin-top: 38px; line-height: 1.2; }
.steps { padding-left: 24px; }
.steps li { margin: 8px 0; }

.tool-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.tool-grid div {
  display: grid; gap: 3px; background: #fff; border: 1px solid var(--border);
  border-radius: 10px; padding: 16px;
}
.tool-grid span { color: var(--muted); font-size: 14px; }

.note {
  margin-top: 32px; padding: 16px 18px; background: #eef2ff;
  border: 1px solid #d9e1ff; border-radius: 12px; font-size: 14px;
}

.text-link { color: var(--accent-dark); font-weight: 750; text-decoration: none; }

footer { border-top: 1px solid var(--border); background: #fff; color: var(--muted); padding: 30px 0; font-size: 14px; }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 18px 30px; align-items: start; }
.footer-inner strong { color: var(--text); font-size: 18px; }
.footer-inner nav { justify-content: flex-end; }
.copyright { grid-column: 1 / -1; border-top: 1px solid var(--border); padding-top: 16px; }

@media (max-width: 620px) {
  .header-inner nav { display: none; }
  .hero { padding-top: 48px; }
  .input-row { grid-template-columns: 1fr; }
  button#unscrambleBtn { min-height: 48px; }
  .tool-grid { grid-template-columns: 1fr; }
  .select-row { align-items: flex-start; flex-direction: column; }
  .select-row select { width: 100%; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-inner nav { justify-content: flex-start; }
}