:root {
  --bg: #f5f6f8;
  --card-bg: #ffffff;
  --text: #1c1f26;
  --text-muted: #6b7280;
  --border: #e3e5e9;
  --primary: #2f6fed;
  --primary-hover: #2558c2;
  --danger: #e0483e;
  --resolved: #16a34a;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --card-bg: #1e2127;
    --text: #eef0f3;
    --text-muted: #9aa1ac;
    --border: #2d3138;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "PingFang TC", "Microsoft JhengHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* 任何元素只要自己的規則設了 display，優先權就會蓋過 [hidden] 的預設
   display:none（尤其是 ID 選擇器或跟它同優先權但排在後面的規則），
   導致 JS 設定 .hidden = true 卻沒有真的隱藏。用 !important 一次擋掉，
   不用每加一個 display 規則就要記得補一條 [hidden] 覆寫。 */
[hidden] {
  display: none !important;
}

.screen { min-height: 100dvh; }

/* ---------- 驗證畫面 ---------- */
/* 用靠上排版而不是垂直置中：手機鍵盤彈出時視窗高度會變化，
   置中的話畫面會跳動、按鈕被推到看不到的地方，要滑下去才找得到 */
#verify-screen {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 48px 24px 24px;
}

.verify-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 28px;
  max-width: 420px;
  width: 100%;
}

.verify-card h1 { font-size: 1.3rem; margin: 0 0 8px; }
.hint { color: var(--text-muted); font-size: 0.85rem; line-height: 1.5; margin-bottom: 20px; }
.hint strong { color: var(--text); font-weight: 600; }
.field-hint { display: block; color: var(--text-muted); font-size: 0.75rem; margin-top: 4px; }

.count-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: color-mix(in srgb, var(--primary) 15%, transparent);
  color: var(--primary);
  border: 1px solid color-mix(in srgb, var(--primary) 35%, transparent);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  margin: 0 0 14px;
}

.count-badge-header {
  margin: 0;
  padding: 2px 10px;
  font-size: 0.7rem;
  flex-shrink: 0;
}

form label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

input, select, textarea {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
}

textarea { resize: vertical; }

button {
  cursor: pointer;
  font-family: inherit;
}

button[type="submit"], .fab {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 11px 16px;
  font-size: 0.95rem;
  width: 100%;
}

button[type="submit"]:hover { background: var(--primary-hover); }

.error { color: var(--danger); font-size: 0.85rem; margin-top: 10px; }

/* ---------- 看板畫面 ---------- */
/* .app-header 只負責滿版背景／sticky；實際內容用 .header-inner 限制
   跟下面貼文列表一樣的寬度並置中，避免寬螢幕時上下對不齊 */
.app-header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 5;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  max-width: 680px;
  margin: 0 auto;
  padding: 14px 16px;
}

.header-left { display: flex; align-items: center; gap: 10px; min-width: 0; }
.app-header h1 {
  font-size: 1.1rem;
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.back-btn {
  background: none;
  border: none;
  font-size: 1.2rem;
  color: var(--text);
  padding: 2px 4px;
  line-height: 1;
  flex-shrink: 0;
}

.ws-status {
  font-size: 0.7rem;
  color: var(--text-muted);
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  flex-shrink: 0;
}
.ws-status.connected { color: var(--resolved); border-color: var(--resolved); }
.ws-status.disconnected { color: var(--danger); border-color: var(--danger); }

.header-right { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.me-info { font-size: 0.8rem; color: var(--text-muted); }

.btn-ghost {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 0.8rem;
}

.tabs {
  overflow-x: auto;
}

.tabs-inner {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  max-width: 680px;
  margin: 0 auto;
}

.tab {
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text-muted);
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  white-space: nowrap;
}

.tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.post-list {
  padding: 4px 16px 100px;
  max-width: 680px;
  margin: 0 auto;
}

.empty-hint { text-align: center; color: var(--text-muted); margin-top: 60px; }

.post-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
  cursor: pointer;
  animation: fade-in 0.25s ease;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.post-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.post-card h3 { margin: 0 0 6px; font-size: 1rem; }

.badge {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--bg);
  color: var(--text-muted);
  border: 1px solid var(--border);
  white-space: nowrap;
}

.badge.resolved { color: var(--resolved); border-color: var(--resolved); }

.post-card-body {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 6px 0;
  white-space: pre-wrap;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.post-card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 8px;
}

.fab {
  position: fixed;
  right: 20px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  font-size: 1.6rem;
  line-height: 1;
  box-shadow: 0 4px 14px rgba(0,0,0,0.25);
}

/* ---------- 子頁面（發布新貼文 / 貼文詳情） ---------- */
.view.page {
  max-width: 680px;
  margin: 0 auto;
  padding: 20px 16px 60px;
}

.page-form label { margin-bottom: 16px; }

.detail-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.detail-content {
  white-space: pre-wrap;
  line-height: 1.6;
  font-size: 0.92rem;
}

.detail-actions {
  display: flex;
  gap: 8px;
  margin: 12px 0;
}

.detail-actions button {
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 0.8rem;
}

hr { border: none; border-top: 1px solid var(--border); margin: 16px 0; }

.comment-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 14px; }

.comment-item { font-size: 0.88rem; }
.comment-meta { color: var(--text-muted); font-size: 0.72rem; margin-bottom: 2px; }
.comment-content { white-space: pre-wrap; }

#comment-form { display: flex; flex-direction: column; gap: 8px; }
#comment-form button[type="submit"] { width: auto; align-self: flex-end; padding: 8px 16px; }

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #1c1f26;
  color: #fff;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.85rem;
  z-index: 50;
}