* { box-sizing: border-box; }
body { font-family: system-ui, sans-serif; margin: 0; padding: 24px; background: #f5f5f7; color: #1a1a1a; }
h1 { font-size: 1.4rem; margin: 0 0 16px; }
.board { display: flex; gap: 16px; overflow-x: auto; align-items: flex-start; }
.column { min-width: 260px; background: #fff; border-radius: 10px; padding: 14px; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.column h2 { font-size: 1rem; margin: 0 0 10px; cursor: pointer; }
.column-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.archive-btn { background: none; border: none; color: #999; cursor: pointer; font-size: .9rem; padding: 0; }
.archive-btn:hover { color: #c00; }
.card { background: #f8f9fb; border: 1px solid #eee; border-radius: 8px; padding: 10px; margin-bottom: 10px; cursor: pointer; }
.card:hover { border-color: #ccc; }
.card .title { font-weight: 600; display: block; margin-bottom: 4px; }
.card .status { font-size: .7rem; text-transform: uppercase; color: #888; }
.next-action { margin-top: 6px; padding: 6px 8px; background: #eef6ff; border-radius: 6px; font-size: .85rem; }
.empty { color: #aaa; font-size: .85rem; }
.new-goal { display: block; width: 100%; margin-top: 4px; padding: 6px; border: 1px dashed #ccc; border-radius: 6px; background: none; cursor: pointer; color: #666; }
.new-column { min-width: 200px; }
.new-column input, .new-column button { width: 100%; padding: 8px; margin-top: 6px; }
.goal-page { max-width: 700px; margin: 0 auto; }
.tree { padding-left: 18px; margin: 8px 0; }
.tree li { list-style: none; margin: 4px 0; position: relative; }
.tree li::before { content: "—"; position: absolute; left: -16px; color: #ccc; }
.tree li.done { text-decoration: line-through; color: #aaa; }
.tree ul { padding-left: 16px; }
.chat { border: 1px solid #eee; border-radius: 8px; padding: 12px; margin-top: 20px; background: #fff; }
.chat .msg { margin: 8px 0; padding: 8px 10px; border-radius: 6px; font-size: .9rem; }
.chat .msg.user { background: #eef6ff; }
.chat .msg.assistant { background: #f5f5f5; }
.chat .msg.error { background: #fdeaea; color: #a30000; }
.chat-input { display: flex; gap: 8px; margin-top: 12px; }
.chat-input textarea { flex: 1; padding: 8px; }
.back-link { display: inline-block; margin-bottom: 16px; }
.goal-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.tree li input[type="checkbox"] { margin-right: 6px; }