:root {
  --bg1: #f7f2eb;
  --bg2: #e8f1f8;
  --ink: #0f172a;
  --muted: #475569;
  --accent: #0f766e;
  --card: rgba(255, 255, 255, 0.85);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 20% 20%, var(--bg2), var(--bg1));
  min-height: 100vh;
}

.layout {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}

.card {
  width: min(900px, 100%);
  padding: 24px;
  background: var(--card);
  backdrop-filter: blur(6px);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.12);
  display: grid;
  gap: 10px;
}

h1 {
  margin: 0;
}

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

label {
  font-weight: 600;
}

input,
textarea,
button {
  font: inherit;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 10px 12px;
}

textarea {
  resize: vertical;
}

button {
  background: var(--accent);
  color: #ffffff;
  border: none;
  cursor: pointer;
  font-weight: 700;
}

button:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

#status {
  min-height: 1.2em;
  margin: 0;
  color: var(--muted);
}