:root {
  --bg-deep: #0b1f1a;
  --bg-mid: #14352c;
  --bg-lift: #1c4a3d;
  --ink: #e8f5ef;
  --muted: #9fbfb2;
  --accent: #c8f542;
  --accent-ink: #102018;
  --line: rgba(232, 245, 239, 0.14);
  --danger: #ff8b7a;
  --radius: 14px;
  --font-display: "Syne", sans-serif;
  --font-body: "DM Sans", sans-serif;
}

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

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 700px at 10% -10%, #2a6b55 0%, transparent 55%),
    radial-gradient(900px 600px at 100% 0%, #3d5a1f 0%, transparent 45%),
    linear-gradient(165deg, var(--bg-deep), var(--bg-mid) 45%, #0e2821 100%);
  background-attachment: fixed;
  line-height: 1.5;
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.07;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
}

.top,
main,
footer {
  position: relative;
  z-index: 1;
  width: min(720px, calc(100% - 2rem));
  margin-inline: auto;
}

.top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 1.25rem 0 0;
  animation: rise 0.7s ease both;
}

.brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.03em;
  color: var(--ink);
  text-decoration: none;
}

.tag {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.hero {
  padding: 3.5rem 0 2rem;
  animation: rise 0.8s 0.08s ease both;
}

.logo {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.2rem, 12vw, 5.5rem);
  letter-spacing: -0.06em;
  line-height: 0.95;
  background: linear-gradient(120deg, var(--ink) 20%, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  margin: 0;
  max-width: 36ch;
  color: var(--muted);
  font-size: 1.05rem;
}

.tool {
  padding: 1.5rem 0 3rem;
  animation: rise 0.85s 0.16s ease both;
}

.tool h2 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: -0.03em;
}

.tool-desc {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.field-label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

textarea {
  width: 100%;
  margin-bottom: 1rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 31, 26, 0.55);
  color: var(--ink);
  font: 0.92rem/1.45 ui-monospace, "Cascadia Code", Consolas, monospace;
  resize: vertical;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

textarea:focus {
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 0.75rem;
}

.btn {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.55rem 1rem;
  background: var(--bg-lift);
  color: var(--ink);
  font: 600 0.9rem/1.2 var(--font-body);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--ink) 28%, transparent);
}

.btn:active {
  transform: translateY(0);
}

.btn.primary {
  background: var(--accent);
  border-color: transparent;
  color: var(--accent-ink);
}

.btn.ghost {
  background: transparent;
}

.status {
  min-height: 1.35rem;
  margin: 0 0 0.85rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.status.error {
  color: var(--danger);
}

.status.ok {
  color: var(--accent);
}

footer {
  padding: 0 0 2.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

footer p {
  margin: 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 520px) {
  .top {
    flex-direction: column;
    gap: 0.25rem;
  }

  .hero {
    padding-top: 2.5rem;
  }

  .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}