:root {
  --bg: #0d1117;
  --card: rgba(22, 27, 34, 0.92);
  --line: rgba(255, 255, 255, 0.1);
  --text: #f0f6fc;
  --muted: #8b949e;
  --accent: #e53946;
  --accent-hover: #ff4655;
  --ok: #3fb950;
  --err: #f85149;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(229, 57, 70, 0.18), transparent 34rem),
    linear-gradient(180deg, #111827, var(--bg));
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
}

.card {
  width: min(100%, 430px);
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--card);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  padding: 26px;
}

form {
  display: grid;
  gap: 12px;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(13, 17, 23, 0.85);
  color: var(--text);
  padding: 14px 15px;
  font-size: 16px;
  outline: none;
}

textarea {
  resize: vertical;
  min-height: 132px;
}

input:focus,
textarea:focus {
  border-color: rgba(229, 57, 70, 0.8);
  box-shadow: 0 0 0 4px rgba(229, 57, 70, 0.13);
}

button {
  margin-top: 8px;
  border: 0;
  border-radius: 15px;
  padding: 15px 18px;
  background: var(--accent);
  color: white;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}

button:hover {
  background: var(--accent-hover);
}

button:active {
  transform: translateY(1px);
}

button:disabled {
  opacity: 0.65;
  cursor: wait;
}

.statusBox {
  display: grid;
  gap: 8px;
  margin-top: 18px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.status {
  min-height: 20px;
  font-size: 13px;
  line-height: 1.45;
  word-break: break-word;
}

.muted { color: var(--muted); }
.ok { color: var(--ok); }
.err { color: var(--err); }