* {
  box-sizing: border-box;
  font-family: system-ui, -apple-system, sans-serif;
}
body {
  background: #f0f2f5;
  margin: 0;
  padding: 20px;
}
.container {
  max-width: 900px;
  margin: 0 auto;
}
.card {
  background: white;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  margin-bottom: 20px;
}
input, textarea, button {
  width: 100%;
  padding: 10px;
  margin-bottom: 12px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 1rem;
}
button {
  background-color: #0066cc;
  color: white;
  border: none;
  cursor: pointer;
  font-weight: bold;
}
button:hover {
  background-color: #0052a3;
}
.link-btn {
  background: none;
  color: #0066cc;
  border: none;
  width: auto;
  padding: 0;
  margin: 0;
  text-decoration: underline;
  cursor: pointer;
}
.logout-btn {
  background-color: #dc3545;
  width: auto;
  padding: 6px 12px;
  margin-left: 12px;
}
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: white;
  padding: 12px 20px;
  border-radius: 12px;
  margin-bottom: 20px;
}
.editor {
  background: white;
  padding: 20px;
  border-radius: 12px;
  margin-bottom: 24px;
}
.notes-list {
  display: grid;
  gap: 16px;
}
.note-card {
  background: white;
  padding: 16px;
  border-radius: 12px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.note-card h3 {
  margin: 0 0 8px 0;
}
.note-card p {
  margin: 0 0 12px 0;
  white-space: pre-wrap;
}
.note-actions {
  display: flex;
  gap: 8px;
}
.note-actions button {
  width: auto;
  padding: 6px 12px;
  margin: 0;
  font-size: 0.85rem;
}
#message {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #28a745;
  color: white;
  padding: 10px 18px;
  border-radius: 30px;
  display: none;
  font-size: 0.9rem;
  z-index: 1000;
}