:root {
  --bg-1: #dfe9f3;
  --bg-2: #f6e3ef;
  --text: #1c2230;
  --muted: #5a6273;
  --card: rgba(255, 255, 255, 0.55);
  --border: rgba(255, 255, 255, 0.7);
  --input: rgba(255, 255, 255, 0.75);
  --accent: #3b5bdb;
  --accent-text: #fff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-1: #141a2b;
    --bg-2: #2a1a2e;
    --text: #e9ecf3;
    --muted: #a3aabb;
    --card: rgba(255, 255, 255, 0.07);
    --border: rgba(255, 255, 255, 0.14);
    --input: rgba(255, 255, 255, 0.08);
    --accent: #7c9bff;
    --accent-text: #0f1424;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: linear-gradient(135deg, var(--bg-1), var(--bg-2)) fixed;
}

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 16px;
  display: grid;
  gap: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

h1 { margin: 0 0 8px; font-size: 2.2rem; line-height: 1.2; }
h2 { margin: 0 0 12px; font-size: 1.3rem; }
p { margin: 0 0 12px; }
.lead { color: var(--muted); font-size: 1.1rem; margin: 0; }
a { color: var(--accent); }

form { display: grid; gap: 14px; margin-top: 8px; }
label { display: grid; gap: 6px; font-size: 0.95rem; color: var(--muted); }

input, textarea {
  font: inherit;
  color: var(--text);
  background: var(--input);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  width: 100%;
}
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
textarea { resize: vertical; }

button {
  font: inherit;
  font-weight: 600;
  justify-self: start;
  padding: 10px 22px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
}
button:hover { filter: brightness(1.08); }

.hidden { display: none; }

footer { text-align: center; color: var(--muted); font-size: 0.9rem; }