:root {
  color-scheme: dark;
  --bg: #0b1020;
  --card: rgba(15, 23, 42, 0.8);
  --text: #e5eefc;
  --muted: #9fb0cf;
  --accent: #8b5cf6;
  --accent-2: #22d3ee;
  --border: rgba(159, 176, 207, 0.18);
  --ok: #34d399;
  --err: #fb7185;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, rgba(139, 92, 246, 0.22), transparent 35%),
    radial-gradient(circle at right, rgba(34, 211, 238, 0.16), transparent 30%),
    var(--bg);
  color: var(--text);
}

main {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
}

.card {
  width: min(100%, 42rem);
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(18px);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

h1 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: clamp(2rem, 4vw, 3rem);
}

p {
  color: var(--muted);
  line-height: 1.6;
}

form {
  margin-top: 1.5rem;
  display: grid;
  gap: 1rem;
}

label {
  display: grid;
  gap: 0.45rem;
  font-weight: 600;
}

input,
textarea,
button {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--border);
  padding: 0.9rem 1rem;
  font: inherit;
}

input,
textarea {
  color: var(--text);
  background: rgba(15, 23, 42, 0.75);
}

textarea { min-height: 10rem; resize: vertical; }

button {
  border: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  font-weight: 700;
  cursor: pointer;
}

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

.hp {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.status {
  min-height: 1.5rem;
  font-size: 0.95rem;
}

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

footer {
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}

a { color: #c4b5fd; }