#tool-wrapper { max-width: 800px; margin: 80px auto 40px; padding: 30px; background: #fff; border-radius: 16px; box-shadow: 0 10px 25px rgba(0,0,0,0.1); }
.dark-mode #tool-wrapper { background: #2c3e50; }
#tool-wrapper h1 { text-align: center; color: #2c3e50; margin-bottom: 30px; }
.dark-mode #tool-wrapper h1 { color: #ecf0f1; }
textarea { width: 100%; height: 150px; padding: 15px; font-size: 14px; font-family: monospace; border: 2px solid #3498db; border-radius: 8px; resize: vertical; background: #f8f9fa; }
.dark-mode textarea { background: #1a252f; color: #ecf0f1; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin: 20px 0; }
.actions button { padding: 10px 20px; font-size: 14px; border: none; border-radius: 5px; cursor: pointer; background: #3498db; color: white; transition: all 0.3s; }
.actions button:hover { background: #2980b9; transform: scale(1.05); }
.copy-actions { display: flex; gap: 15px; justify-content: center; margin-top: 15px; }
.copy-actions button { padding: 10px 20px; font-size: 14px; border: none; border-radius: 5px; cursor: pointer; }
#copy-btn { background: #2ecc71; color: white; }
#clear-btn { background: #95a5a6; color: white; }