:root {
  --bg-1: #0f1f1f;
  --bg-2: #102734;
  --bg-3: #204433;
  --panel: rgba(12, 18, 26, 0.86);
  --line: rgba(171, 222, 199, 0.24);
  --text: #f2f4f5;
  --muted: #a5bbc0;
  --accent: #ffcc4d;
  --accent-2: #3ee2b8;
  --danger: #ff7b7b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  min-height: 100vh;
  background: radial-gradient(circle at 10% 20%, var(--bg-3) 0%, transparent 45%),
    radial-gradient(circle at 85% 15%, #3f5a7a 0%, transparent 35%),
    linear-gradient(125deg, var(--bg-1), var(--bg-2));
}

.backdrop {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(transparent 95%, rgba(255, 255, 255, 0.04) 95%),
    linear-gradient(90deg, transparent 95%, rgba(255, 255, 255, 0.04) 95%);
  background-size: 22px 22px;
  pointer-events: none;
  opacity: 0.35;
}

.layout {
  width: min(1200px, 94vw);
  margin: 2rem auto;
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
  position: relative;
  z-index: 1;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem;
  background: var(--panel);
  backdrop-filter: blur(4px);
  animation: reveal 0.45s ease both;
}

.input-panel {
  animation-delay: 0.06s;
}

.result-panel {
  animation-delay: 0.18s;
}

h1,
h2 {
  margin-top: 0;
}

.subtitle,
.helper,
.status {
  color: var(--muted);
}

h1 {
  letter-spacing: 0.03em;
}

.field-row {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 0.7rem;
}

label {
  font-size: 0.93rem;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  color: var(--text);
  padding: 0.65rem 0.7rem;
  font-family: "IBM Plex Mono", monospace;
}

input:focus {
  outline: none;
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px rgba(62, 226, 184, 0.2);
}

.actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.btn {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.65rem 0.95rem;
  color: var(--text);
  background: transparent;
  cursor: pointer;
  font-family: "Space Grotesk", sans-serif;
}

.btn-primary {
  background: linear-gradient(120deg, #18856f, #196c8d);
  border-color: transparent;
}

.btn-ghost:hover,
.btn-primary:hover {
  transform: translateY(-1px);
}

.metric-grid {
  display: grid;
  gap: 0.65rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.metric {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.7rem;
}

.metric span {
  display: block;
  color: var(--muted);
  font-size: 0.84rem;
  margin-bottom: 0.2rem;
}

.metric strong {
  font-family: "IBM Plex Mono", monospace;
  font-size: 1.08rem;
}

.status.ok {
  color: var(--accent-2);
}

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

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 940px) {
  .layout {
    grid-template-columns: 1.05fr 1fr;
  }

  .panel {
    padding: 1.3rem;
  }
}