/* Light/Dark Mode Setup */
:root {
  --bg: #ffffff;
  --fg: #202124;
  --card: #f9f9f9;
  --border: #ccc;
  --primary: #4CAF50;
  --primary-hover: #3b9440;
  --header: #333;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --fg: #e0e0e0;
    --card: #1e1e1e;
    --border: #444;
    --primary: #66bb6a;
    --primary-hover: #4caf50;
    --header: #ccc;
  }
}

body {
  font-family: 'Segoe UI', Tahoma, sans-serif;
  background-color: var(--bg);
  color: var(--fg);
  padding: 20px;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  height: 100vh;
}

.container {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  width: 100%;
  max-width: 1200px;
  height: 90vh;
  background-color: var(--card);
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  border-radius: 10px;
  overflow: hidden;
}

.left-column, .right-column {
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.left-column {
  width: 40%;
  border-right: 1px solid var(--border);
}

.right-column {
  width: 60%;
}

label {
  font-weight: 600;
  margin-top: 10px;
}

input, select, textarea {
  font-size: 14px;
  margin-bottom: 10px;
  padding: 8px 10px;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 6px;
  background-color: var(--bg);
  color: var(--fg);
  box-sizing: border-box;
}

textarea {
  resize: vertical;
}

.button-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

button {
  padding: 8px 16px;
  font-size: 13px;
  background-color: var(--primary);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: var(--primary-hover);
}

.title-list {
  flex-grow: 1;
  border: 1px solid var(--border);
  padding: 10px;
  overflow-y: auto;
  background-color: var(--bg);
  border-radius: 6px;
}

.title-list-item {
  padding: 8px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  border-radius: 4px;
}

.title-list-item:hover {
  background-color: rgba(0,0,0,0.05);
}

.category-header {
  font-weight: bold;
  margin-top: 15px;
  margin-bottom: 5px;
  color: var(--header);
}

@media (max-width: 768px) {
  .container {
    flex-direction: column;
    height: auto;
  }

  .left-column, .right-column {
    width: 90%;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .right-column {
    border-bottom: none;
  }

  body {
  padding: 10px;
  align-items: stretch; /* Allow full width */
}

.container {
  width: 90%;
  max-width: 90%;
  box-shadow: none; /* Remove desktop-style shadow */
  border-radius: 0;
}

}