body { font-family: Arial, sans-serif; margin: 0; padding: 0; display: flex; justify-content: center; align-items: center; min-height: 100vh; background: linear-gradient(135deg, #74ebd5, #ACB6E5); transition: background 0.5s; }
.container { background: white; padding: 20px; border-radius: 10px; box-shadow: 0 4px 12px rgba(0,0,0,0.2); max-width: 600px; width: 100%; }
h1 { text-align: center; margin-bottom: 20px; }
input, button { width: 100%; padding: 10px; margin: 10px 0; border: 1px solid #ddd; border-radius: 5px; }
button { background: #007BFF; color: white; cursor: pointer; }
button:hover { background: #0056b3; }
.log-item { background: #f9f9f9; padding: 10px; border-left: 4px solid #007BFF; margin-bottom: 10px; border-radius: 5px; cursor: pointer; }
.log-detail { display: none; padding-top: 10px; }
.dark-mode { background: linear-gradient(135deg, #1c1c1c, #434343); color: white; }
.dark-mode .container { background: #333; color: white; }