* {
  box-sizing: border-box;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  margin: 0;
  padding: 0;
  background: #050816;
  color: #f5f5f5;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
}

.app {
  max-width: 800px;
  width: 100%;
  padding: 24px;
  margin: 32px 16px;
  background: rgba(15, 23, 42, 0.95);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(148, 163, 184, 0.3);
}

h1 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 28px;
}

.subtitle {
  margin-top: 0;
  margin-bottom: 20px;
  color: #9ca3af;
}

label {
  display: block;
  margin: 12px 0 6px;
  font-weight: 600;
}

textarea {
  width: 100%;
  min-height: 110px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #4b5563;
  background: #020617;
  color: #e5e7eb;
  resize: vertical;
  font-size: 14px;
}

textarea:focus {
  outline: none;
  border-color: #6366f1;
  box-shadow: 0 0 0 1px #6366f1;
}

button {
  margin: 14px 0;
  padding: 10px 18px;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, #6366f1, #ec4899);
  color: white;
  font-weight: 600;
  cursor: pointer;
  font-size: 14px;
  transition: transform 0.1s ease, box-shadow 0.1s ease, opacity 0.1s ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  opacity: 0.95;
}

button:active {
  transform: translateY(0);
  box-shadow: none;
}

.note {
  margin-top: 10px;
  font-size: 12px;
  color: #9ca3af;
}