:root {
  --bg: #f1efe8;
  --surface: #fbfaf6;
  --surface-strong: #fffdf8;
  --ink: #1f2c2b;
  --muted: #60706d;
  --line: #d7d2c5;
  --accent: #0f766e;
  --accent-soft: #d8eeeb;
  --shadow: 0 12px 40px rgba(31, 44, 43, 0.08);
  --radius: 20px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.1), transparent 30%),
    linear-gradient(180deg, #f7f4ec 0%, var(--bg) 100%);
}

a {
  color: inherit;
}

.hero {
  padding: 40px 20px 20px;
}

.hero__inner,
.layout,
.footer {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
}

.hero__inner {
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.08), rgba(255, 253, 248, 0.9));
  border: 1px solid rgba(15, 118, 110, 0.12);
  border-radius: 28px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand__mark {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: var(--ink);
  color: var(--surface-strong);
  font-weight: 700;
  font-size: 1.4rem;
}

.eyebrow {
  margin: 0 0 4px;
  font-size: 0.76rem;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
}

h1,
h2 {
  margin: 0;
  font-family: "IBM Plex Mono", "Consolas", monospace;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

h2 {
  font-size: 1.15rem;
}

.hero__lead {
  max-width: 56ch;
  margin: 18px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.nav a {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.6);
}

.layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  padding: 12px 0 40px;
}

.panel {
  padding: 22px;
  border: 1px solid rgba(31, 44, 43, 0.08);
  border-radius: var(--radius);
  background: rgba(251, 250, 246, 0.88);
  box-shadow: var(--shadow);
}

.panel--wide {
  grid-column: 1 / -1;
}

.panel__header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
  margin-bottom: 16px;
}

.label {
  display: block;
  margin: 10px 0 8px;
  font-size: 0.9rem;
  color: var(--muted);
}

textarea,
input[type="text"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface-strong);
  color: var(--ink);
  font: inherit;
  resize: vertical;
}

textarea[readonly] {
  background: #f4f1e9;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0;
}

.button {
  border: 0;
  border-radius: 12px;
  padding: 10px 14px;
  font: inherit;
  background: var(--ink);
  color: #fff;
  cursor: pointer;
}

.button--ghost {
  background: var(--accent-soft);
  color: var(--ink);
}

.button:hover {
  filter: brightness(0.98);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.info-grid--compact {
  grid-template-columns: 1fr;
}

.info-grid div {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-strong);
}

.info-grid span {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 8px;
}

.info-grid strong,
.output {
  font-family: "IBM Plex Mono", "Consolas", monospace;
  overflow-wrap: anywhere;
}

.output {
  min-height: 60px;
  margin: 0;
  padding: 14px;
  border-radius: 14px;
  background: #182423;
  color: #e8f4f2;
  white-space: pre-wrap;
}

.output--small {
  font-size: 0.85rem;
}

.status {
  margin: 10px 0;
  font-size: 0.92rem;
  color: var(--muted);
}

.range-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

input[type="range"] {
  width: 100%;
}

.checkboxes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
  color: var(--muted);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 0 0 36px;
  color: var(--muted);
  font-size: 0.92rem;
}

.separator {
  margin: 0 8px;
}

@media (max-width: 860px) {
  .layout {
    grid-template-columns: 1fr;
  }

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