@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap");

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

* {
  margin: 0;
}

html:focus-within {
  scroll-behavior: smooth;
}

html, body {
  height: 100%;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

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

:focus:not(:focus-visible) {
  outline: none;
}

:root {
  --bg: #0b1220;
  --bg-elev: #0f1a2b;
  --card: #111c2f;
  --stroke: #1f2a44;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #22d3ee;
  --accent-strong: #06b6d4;
  --danger: #ef4444;
  --radius: 14px;
  --shadow-1: 0 1px 2px rgba(0,0,0,.2), 0 8px 24px rgba(2,6,23,.45);
  --shadow-2: 0 4px 14px rgba(2,6,23,.35), 0 20px 40px rgba(2,6,23,.4);
  --space-1: .375rem;
  --space-2: .75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
}

body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  color: var(--text);
  background:
    radial-gradient(1200px 800px at 10% -10%, rgba(34,211,238,.12), transparent 70%),
    radial-gradient(1000px 700px at 90% 40%, rgba(99,102,241,.08), transparent 65%),
    radial-gradient(800px 600px at 50% 100%, rgba(34,211,238,.06), transparent 60%),
    linear-gradient(180deg, var(--bg), var(--bg));
  background-attachment: fixed;
  min-height: 100vh;
  padding: 0 var(--space-4) var(--space-6);
  line-height: 1.6;
}

main, .page {
  max-width: 1100px;
  margin-inline: auto;
}

body > p {
  max-width: 900px;
  margin: var(--space-5) auto;
  padding: var(--space-4) var(--space-5);
  background: linear-gradient(135deg, rgba(34,211,238,.08), rgba(99,102,241,.06));
  border: 1px solid rgba(148,163,184,.2);
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0,0,0,.2);
  font-size: clamp(1rem, 1.8vw, 1.1rem);
  line-height: 1.7;
}

header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(140%) blur(10px);
  background: linear-gradient(180deg, rgba(15,23,42,.8), rgba(15,23,42,.45));
  border-bottom: 1px solid rgba(148,163,184,.18);
}

header nav {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

header h1 {
  font-size: clamp(1.1rem, 2.2vw, 1.5rem);
  font-weight: 700;
  letter-spacing: .2px;
  margin-left: 0;
}

header .links {
  display: flex;
  gap: clamp(.5rem, 2vw, 1rem);
  align-items: center;
}

header .links a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: .98rem;
  padding: .4rem .6rem;
  border-radius: 10px;
  position: relative;
}

header .links a::after {
  content: "";
  position: absolute;
  left: 10%;
  right: 10%;
  bottom: 6px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transform: translateY(3px);
  transition: opacity .2s ease, transform .2s ease;
}
header .links a:hover::after, header .links a:focus-visible::after {
  opacity: 1;
  transform: translateY(0);
}

header .links a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

hr {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(148,163,184,.3), transparent);
  margin: var(--space-3) 0;
}

.container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin: var(--space-5) auto;
  max-width: 1100px;
  position: relative;
  justify-items: center;
}

.container::before {
  content: "";
  position: absolute;
  top: -1rem;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  border-radius: 999px;
}

@media (min-width: 700px) {
  .container { grid-template-columns: repeat(2, 1fr);
  justify-items: stretch;
  }
}

.column {
  background: linear-gradient(135deg, rgba(34,211,238,.04), rgba(255,255,255,.02));
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  padding: var(--space-4);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  position: relative;
  overflow: hidden;
  width: 100%;
  max-width: 800px;
}

.column::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 80px;
  height: 80px;
  background: radial-gradient(circle at top right, rgba(34,211,238,.08), transparent 70%);
  pointer-events: none;
}

.column:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
  border-color: rgba(148,163,184,.35);
}

@media (min-width: 700px) {
  .column { max-width: none;
  }
}

md-block {
  display: block;
  color: var(--text);
}

md-block h1, md-block h2, md-block h3 {
  line-height: 1.2;
  margin-bottom: .5em;
  text-align: center;
}

md-block h1 {
  font-size: clamp(1.4rem, 3.2vw, 2rem);
  font-weight: 700;
}

md-block h2 {
  font-size: clamp(1.2rem, 2.6vw, 1.6rem);
  font-weight: 700;
}

md-block p {
  margin: .8em 0;
  color: var(--text);
}

md-block ul, md-block ol {
  margin: .6em 0 .6em 1.2em;
  color: var(--text);
  list-style: disc;
}

md-block li {
  margin: .35em 0;
}

md-block strong {
  color: var(--accent);
}

p { margin: .75rem 0;
  color: var(--text);
  }
strong { color: #f8fafc;
  font-weight: 700;
  }
a { color: var(--accent);
  text-decoration: none;
  }
a:hover { color: var(--accent-strong);
  }

form { 
  max-width: 760px;
  margin: var(--space-5) auto;
  background: linear-gradient(135deg, rgba(34,211,238,.06), rgba(255,255,255,.02));
  border:1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  padding: var(--space-5);
  position: relative;
}

form::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

form p {
  font-weight: 600;
  color: #cbd5e1;
  margin-top: var(--space-3);
  }

.form-row {
  margin-top: .25rem;
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.25rem;
  align-items: center;
  }

input[type="radio"] {
  appearance: none;
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 999px;
  border: 2px solid #475569;
  display: inline-grid;
  place-content: center;
  vertical-align: middle;
  margin-right: .45rem;
  }

input[type="radio"]::before {
  content: "";
  width: .58rem;
  height: .58rem;
  border-radius: 50%;
  transform: scale(0);
  transition: 120ms transform ease-in-out;
  box-shadow: inset 1rem 1rem var(--accent);
  }

input[type="radio"]:checked::before {
  transform: scale(1);
  }

input[type="radio"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  }

label {
  color: var(--text);
  margin-right: .75rem;
  }

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: #22314f;
  border-radius: 999px;
  outline: none;
  margin: .4rem 0 .2rem;
  }

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(34,211,238,.25);
  border: 2px solid #0e7490;
  cursor: pointer;
  }

input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #0e7490;
  cursor: pointer;
  }

output {
  display: inline-block;
  min-width: 2ch;
  text-align: center;
  margin-left: .5rem;
  color: var(--text);
  font-weight: 700;
  }

button, input[type="submit"], .btn {
  -webkit-appearance: none;
  appearance: none;
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
  color: #00131a;
  font-weight: 700;
  padding: .7rem 1.1rem;
  border-radius: 12px;
  border: 1px solid #0ea5b1;
  box-shadow: 0 10px 20px rgba(34,211,238,.18), inset 0 1px 0 rgba(255,255,255,.3);
  transition: transform .08s ease, filter .2s ease, box-shadow .2s ease;
  cursor: pointer;
}

button:hover, input[type="submit"]:hover, .btn:hover {
  filter: brightness(1.05);
  box-shadow: 0 12px 24px rgba(34,211,238,.22), inset 0 1px 0 rgba(255,255,255,.35);
  }

button:active, input[type="submit"]:active, .btn:active {
  transform: translateY(1px);
  }

button:focus-visible, input[type="submit"]:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  }

.text-lg {
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
}

.text-xl {
  font-size: clamp(1.2rem, 2vw, 1.4rem);
}

.text-sm {
  font-size: .9rem;
  }

.font-bold {
  font-weight: 700;
}

.underline {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  }.block {
    display: block;
}

.text-center {
  text-align: center;
}

.ml-2 {
  margin-left: .5rem;
}

.mr-2 {
  margin-right: .5rem;
}

.ml-5 {
  margin-left: 0;
}

.mx-5 {
  margin-left: 1.25rem;
  margin-right: 1.25rem;
}

.px-5 {
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.pr-5 {
  padding-right: 1.25rem;
}

.my-2 {
  margin-top: .5rem;
  margin-bottom: .5rem;
}

.my-5 {
  margin-top: 1.25rem;
  margin-bottom: 1.25rem;
}

.bg-amber-200, .bg-green-300 {
  background: transparent;
}

@media (max-width: 600px) {
  body { padding-left: var(--space-3);
  padding-right: var(--space-3);
  }
  header .links a { font-size: .95rem;
  padding: .35rem .5rem;
  }
  form { padding: var(--space-4);
  }
}

footer {
  max-width: 1100px;
  margin: var(--space-6) auto var(--space-5);
  padding: var(--space-5) var(--space-4);
  text-align: center;
  border-top: 1px solid rgba(148,163,184,.2);
  position: relative;
}

footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

footer p {
  color: var(--muted);
  font-size: .95rem;
  margin: .5rem 0;
}

footer a {
  color: var(--accent);
  font-weight: 600;
}

.results-content {
  margin: 0 auto;
  max-width: 900px;
  width: 100%;
  font-size: 1.15rem;
  box-shadow: 0 2px 16px rgba(34,211,238,.08);
}

.results-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 100vw;
  position: relative;
}

center {
  display: block;
  text-align: center;
  margin: var(--space-3) 0;
}

@keyframes float {
  0%, 100% { transform: translateY(0px);
  }
  50% { transform: translateY(-10px);
  }
}

body::after {
  content: "🧬";
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  font-size: 2.5rem;
  opacity: .15;
  animation: float 4s ease-in-out infinite;
  pointer-events: none;
  z-index: 1;
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important;
  animation: none !important;
  }
  body::after { animation: none;
  }
}