:root {
  --bg-1: #071518;
  --bg-2: #14343a;
  --bg-3: #e28f2d;
  --card: rgba(12, 27, 31, 0.8);
  --line: rgba(143, 218, 193, 0.25);
  --text: #f6fbf7;
  --muted: #b8cdc5;
  --accent: #8fdbc1;
  --danger: #ffcf7a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
  background:
    radial-gradient(1000px 480px at 20% -10%, rgba(143, 219, 193, 0.2), transparent 60%),
    radial-gradient(900px 500px at 100% 0, rgba(226, 143, 45, 0.25), transparent 60%),
    linear-gradient(130deg, var(--bg-1), var(--bg-2) 55%, #1a2428);
  min-height: 100vh;
}

.page {
  width: min(1180px, 94vw);
  margin: 24px auto 34px;
  display: grid;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  backdrop-filter: blur(6px);
  animation: up 0.45s ease both;
}

.hero h1 {
  margin: 0;
  font-size: clamp(26px, 4vw, 36px);
}

.hero p {
  margin: 10px 0 0;
  color: var(--muted);
}

.kicker {
  margin: 0 0 6px;
  color: var(--danger);
  letter-spacing: 0.14em;
  font-size: 12px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.form-card h2,
.safety h2,
.output-card h2 {
  margin: 0 0 12px;
  font-size: 18px;
}

.field-row {
  display: grid;
  grid-template-columns: 118px 1fr;
  align-items: center;
  gap: 10px;
  margin-bottom: 9px;
}

label {
  font-size: 13px;
  color: var(--muted);
}

input {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border-radius: 9px;
  padding: 8px 10px;
  font-family: "IBM Plex Mono", monospace;
}

input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(143, 219, 193, 0.2);
}

.run-btn,
.ghost-btn {
  border: 0;
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  font-weight: 600;
}

.run-btn {
  width: 100%;
  margin-top: 6px;
  color: #082322;
  background: linear-gradient(90deg, var(--accent), #d7f4e9);
}

.run-btn:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.check input {
  width: auto;
}

.output-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ghost-btn {
  color: var(--text);
  background: rgba(255, 255, 255, 0.12);
}

#output {
  margin: 8px 0 0;
  height: 240px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  padding: 12px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  background: rgba(0, 0, 0, 0.22);
}

@keyframes up {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 920px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .field-row {
    grid-template-columns: 1fr;
    gap: 5px;
  }
}