* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #e4ecf7 100%);
  color: #1f2937;
  min-height: 100vh;
}

.container {
  max-width: 560px;
  margin: 0 auto;
  padding: 64px 24px;
}

header {
  text-align: center;
  margin-bottom: 32px;
}

h1 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 8px;
  color: #111827;
}

.subtitle {
  margin: 0;
  color: #6b7280;
  font-size: 15px;
}

form {
  background: #ffffff;
  padding: 32px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.field {
  margin-bottom: 18px;
}

label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: #374151;
}

input, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  background: #fff;
  color: #111827;
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus, textarea:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

button {
  width: 100%;
  padding: 12px 16px;
  background: #2563eb;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

button:hover:not(:disabled) {
  background: #1d4ed8;
}

button:disabled {
  background: #93c5fd;
  cursor: not-allowed;
}

.status {
  margin: 16px 0 0;
  font-size: 14px;
  text-align: center;
  min-height: 20px;
}

.status.success {
  color: #047857;
}

.status.error {
  color: #b91c1c;
}