:root {
  color-scheme: dark;
  --bg: #070a0f;
  --panel: #0d1320;
  --panel-2: #111827;
  --line: #223047;
  --text: #eef4ff;
  --muted: #9fb0c8;
  --accent: #38bdf8;
  --accent-2: #a7f3d0;
  --warn: #fbbf24;
  --danger: #fb7185;
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 16px clamp(18px, 4vw, 56px);
  background: rgba(7, 10, 15, 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: #0ea5e9;
  color: #00111c;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--muted);
  font-size: 0.94rem;
}

nav a {
  text-decoration: none;
}

.hero,
.tool-shell,
.feature-band,
.pricing {
  padding: clamp(42px, 7vw, 84px) clamp(18px, 4vw, 56px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
  min-height: calc(100vh - 68px);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-2);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 900px;
  margin-bottom: 18px;
  font-size: clamp(3rem, 8vw, 6.8rem);
  line-height: 0.92;
  letter-spacing: 0;
}

h2 {
  max-width: 760px;
  font-size: clamp(1.9rem, 4vw, 3.3rem);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  font-size: 1.05rem;
  letter-spacing: 0;
}

.lede {
  max-width: 720px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.26rem);
}

.hero-actions,
.controls,
.card-head {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #101827;
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
}

.button.primary {
  border-color: #38bdf8;
  background: #38bdf8;
  color: #00111c;
}

.button.secondary {
  border-color: #2dd4bf;
}

.button.ghost {
  background: transparent;
}

.button.small {
  min-height: 34px;
  padding: 0 12px;
  font-size: 0.86rem;
}

.hero-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 22px;
}

.metric {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
  color: var(--muted);
}

.metric strong {
  color: var(--accent);
  font-size: 4rem;
  line-height: 1;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.mini-grid span {
  min-height: 74px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #0a111d;
  color: var(--muted);
  font-weight: 700;
}

.section-heading {
  margin-bottom: 28px;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
  gap: 18px;
  align-items: start;
}

.input-panel,
.results-panel,
.output-card,
.feature-grid article,
.price-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.input-panel,
.results-panel,
.output-card {
  padding: 18px;
}

label,
legend {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 760;
}

textarea {
  width: 100%;
  min-height: 320px;
  margin-bottom: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #050814;
  color: var(--text);
  font: 0.91rem/1.45 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  resize: vertical;
}

.preset-group {
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.preset-group label {
  display: flex;
  gap: 8px;
  align-items: center;
  margin: 0;
  color: var(--text);
}

.score-card {
  display: grid;
  grid-template-columns: auto auto;
  gap: 6px 16px;
  align-items: end;
  margin-bottom: 16px;
}

.score-card span {
  color: var(--muted);
}

.score-card strong {
  grid-row: span 2;
  justify-self: end;
  color: var(--accent);
  font-size: 3rem;
  line-height: 1;
}

.score-card p {
  margin: 0;
  color: var(--muted);
}

.preview-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
  font-size: 0.9rem;
}

th,
td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  text-align: left;
  white-space: nowrap;
}

tbody tr:nth-child(even) {
  background: var(--panel-2);
}

.status-pill {
  display: inline-flex;
  min-width: 74px;
  justify-content: center;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.14);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
}

.insights,
.output-grid,
.feature-grid,
.pricing-grid {
  display: grid;
  gap: 18px;
}

.insights {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 18px;
}

ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

li + li {
  margin-top: 8px;
}

.output-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 18px;
}

.card-head {
  justify-content: space-between;
  margin-bottom: 12px;
}

pre {
  max-height: 380px;
  margin: 0;
  overflow: auto;
  padding: 14px;
  border-radius: var(--radius);
  background: #050814;
  color: #dbeafe;
  font-size: 0.82rem;
}

.feature-band,
.pricing {
  border-top: 1px solid var(--line);
}

.feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-grid article,
.price-card {
  padding: 18px;
}

.feature-grid p,
.price-card p {
  color: var(--muted);
}

.icon {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 14px;
  border-radius: 8px;
  background: rgba(56, 189, 248, 0.14);
  color: var(--accent);
  font-weight: 850;
}

.pricing-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.price-card strong {
  display: block;
  margin-bottom: 10px;
  color: var(--accent-2);
  font-size: 2rem;
}

.price-card.featured {
  border-color: var(--accent);
  background: #0b1f2a;
}

footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 24px clamp(18px, 4vw, 56px);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

@media (max-width: 980px) {
  .hero,
  .workspace,
  .output-grid,
  .feature-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }
}

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

  h1 {
    font-size: 3rem;
  }

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

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