* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: #fdfbfb; padding: 20px; }
.header { display: flex; justify-content: space-between; align-items: center; max-width: 1000px; margin: 0 auto 30px auto; padding: 0 20px; }
h1 { color: #333; }
.add-note-btn { background: #9b59b6; color: white; border: none; padding: 10px 20px; border-radius: 20px; font-weight: bold; cursor: pointer; transition: 0.3s; }
.add-note-btn:hover { background: #8e44ad; }
.notes-container { display: flex; flex-wrap: wrap; gap: 20px; max-width: 1000px; margin: 0 auto; justify-content: flex-start; }
.note { background: #fff; width: 300px; min-height: 200px; border-radius: 10px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); display: flex; flex-direction: column; overflow: hidden; position: relative; }
.note-header { background: #f1c40f; padding: 10px; display: flex; justify-content: flex-end; }
.delete-btn { background: transparent; border: none; color: #fff; font-size: 18px; cursor: pointer; }
.delete-btn:hover { color: #e74c3c; }
.note textarea { flex: 1; padding: 15px; border: none; outline: none; resize: none; font-family: inherit; font-size: 16px; background: #fff9e6; }