/* ============================================================
   作业小达人 v4 - 皮肤系统 + 左侧导航 + 儿童友好新组件
   三套皮肤：天蓝小熊(blue) / 粉紫独角兽(unicorn) / 浅黄布丁狗(pudding)
   通过 <html data-theme="..."> 切换，即时生效。
   ============================================================ */

/* ---------- 皮肤变量（覆盖 style.css 中的 --pink-* 语义变量） ---------- */
[data-theme="blue"] {
  --pink-bg: #eef7fd;
  --pink-light: #dceefb;
  --pink-card: #ffffff;
  --pink-primary: #a8d8ea;
  --pink-deep: #5fb0d4;
  --pink-border: #c7e6f3;
  --pink-soft: #f0f8ff;
  --text-main: #3f5566;
  --text-light: #7d97a8;
  --shadow-soft: 0 8px 24px rgba(120, 180, 210, 0.22);
  --shadow-card: 0 10px 28px rgba(120, 180, 210, 0.18);
  --mascot: '🐻';
  --banner-grad: linear-gradient(120deg, #a8d8ea 0%, #cfe9f5 35%, #e6d3f8 70%, #fff4b8 100%);
}

[data-theme="unicorn"] {
  --pink-bg: #fbf2ff;
  --pink-light: #f3e3fb;
  --pink-card: #ffffff;
  --pink-primary: #e6d3f8;
  --pink-deep: #c79ce6;
  --pink-border: #e7d4f7;
  --pink-soft: #fdf5ff;
  --text-main: #5a4a66;
  --text-light: #9a87a8;
  --shadow-soft: 0 8px 24px rgba(200, 160, 230, 0.22);
  --shadow-card: 0 10px 28px rgba(200, 160, 230, 0.18);
  --mascot: '🦄';
  --banner-grad: linear-gradient(120deg, #e6d3f8 0%, #f3e1fb 35%, #cfe9f5 70%, #fff4b8 100%);
}

[data-theme="pudding"] {
  --pink-bg: #fffaf0;
  --pink-light: #fff3d6;
  --pink-card: #ffffff;
  --pink-primary: #fff4b8;
  --pink-deep: #ecc469;
  --pink-border: #fff0c2;
  --pink-soft: #fffaf0;
  --text-main: #6b5a3a;
  --text-light: #a9946a;
  --shadow-soft: 0 8px 24px rgba(230, 200, 120, 0.25);
  --shadow-card: 0 10px 28px rgba(230, 200, 120, 0.2);
  --mascot: '🐶';
  --banner-grad: linear-gradient(120deg, #fff4b8 0%, #fff8d6 35%, #e6d3f8 70%, #a8d8ea 100%);
}

/* ---------- 布局：左侧导航 + 主区域 ---------- */
.main-area {
  margin-left: 220px;
  min-height: 100vh;
  padding: 18px 20px 40px;
  transition: margin-left 0.25s ease;
}

.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: 220px;
  background: var(--pink-card);
  border-right: 1px solid var(--pink-border);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  z-index: 300;
  padding: 18px 12px;
  overflow-x: hidden;
  transition: width 0.3s ease-in-out, padding 0.3s ease-in-out;
}

/* 顶部展开/收起按钮 */
.sidebar-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin-bottom: 12px;
  padding: 10px 12px;
  border: none;
  border-radius: 12px;
  background: transparent;
  color: inherit;
  font-family: var(--font-main);
  font-weight: 800;
  font-size: 16px;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.18s ease;
}
.sidebar-toggle:hover { background: var(--pink-soft); }
.sidebar-toggle .toggle-brand { font-size: 24px; width: 38px; text-align: center; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.sidebar-toggle .logo-emoji { font-size: 26px; line-height: 1; }
.sidebar-toggle .toggle-text {
  display: flex; align-items: center; gap: 6px;
  white-space: nowrap; overflow: hidden;
  max-width: 200px;
  transition: max-width 0.3s ease-in-out, opacity 0.3s ease-in-out, margin 0.3s ease-in-out, padding 0.3s ease-in-out;
}
.sidebar-toggle .logo-text { font-size: 16px; white-space: nowrap; overflow: hidden; transition: max-width 0.3s ease-in-out, opacity 0.3s ease-in-out; display: inline-block; }
.sidebar-toggle .toggle-arrow { font-size: 14px; opacity: 0.7; flex-shrink: 0; }

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px 16px;
  font-weight: 800;
  font-size: 18px;
  color: var(--pink-deep);
}
.logo-emoji { font-size: 26px; }

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 14px;
  border: none;
  background: transparent;
  border-radius: 14px;
  font-family: var(--font-main);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  text-align: left;
  transition: background 0.18s, transform 0.1s;
  position: relative;
}
.nav-item:active { transform: scale(0.97); }
.nav-item .nav-ico { font-size: 30px; width: 38px; text-align: center; flex-shrink: 0; }
.nav-label {
  flex: 1 1 auto; min-width: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  transition: max-width 0.3s ease-in-out, opacity 0.3s ease-in-out, margin 0.3s ease-in-out, padding 0.3s ease-in-out;
}
.nav-item:hover { background: var(--pink-soft); }
.nav-item.active {
  background: var(--pink-primary);
  color: #fff;
  box-shadow: var(--shadow-card);
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: -12px; top: 18%;
  width: 5px; height: 64%;
  border-radius: 0 6px 6px 0;
  background: var(--pink-deep);
}

.nav-divider { height: 1px; background: var(--pink-border); margin: 8px 6px; }

.sidebar-footer { padding-top: 10px; border-top: 1px solid var(--pink-border); }
.admin-nav-btn.active { background: var(--pink-primary); color: #fff; }

/* 移动端汉堡 + 顶栏 */
.hamburger-btn {
  display: none;
  position: fixed;
  top: 12px; left: 12px;
  z-index: 320;
  width: 44px; height: 44px;
  border: none;
  border-radius: 12px;
  background: var(--pink-card);
  box-shadow: var(--shadow-card);
  font-size: 22px;
  cursor: pointer;
}
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  z-index: 290;
}
.sidebar-overlay.show { display: block; }

.topbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 280;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--pink-card);
  border-radius: 0 0 18px 18px;
  box-shadow: var(--shadow-soft);
  margin: -18px -20px 16px;
}
.topbar-menu { border: none; background: transparent; font-size: 22px; cursor: pointer; }
.topbar-title { font-weight: 800; color: var(--pink-deep); flex: 1; }
.topbar-points { font-weight: 700; color: var(--pink-deep); }

/* 仅真手机（宽度 < 481px，纯宽度判断，不依赖 orientation）：隐藏侧栏 + 汉堡覆盖层。
   平板（含横竖屏，CSS 宽约 530–600px）与桌面一律走折叠逻辑，不再被本规则捕获。 */
@media (max-width: 480px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    width: 240px;
  }
  .sidebar.open { transform: translateX(0); }
  .main-area { margin-left: 0; padding-top: 70px; }
  .hamburger-btn { display: flex; align-items: center; justify-content: center; }
  .topbar { display: flex; }
}

/* 平板 / 桌面（宽度 ≥481px，含横竖屏）：折叠态（默认窄条，仅图标）
   说明：用宽度判断而非 orientation（平板 PWA/standalone 下 orientation 上报不稳）。
   阈值取 481px：真手机竖屏 ≤430px 走汉堡隐藏；平板竖屏 CSS 宽约 530–600px 仍走折叠逻辑。 */
@media (min-width: 481px) {
  .sidebar.sidebar-collapsed { width: 80px; padding-left: 10px; padding-right: 10px; }
  .sidebar.sidebar-collapsed ~ .main-area { margin-left: 80px; }
  /* 文字裁剪淡出，防止溢出 */
  .sidebar.sidebar-collapsed .nav-label,
  .sidebar.sidebar-collapsed .logo-text,
  .sidebar.sidebar-collapsed .toggle-text {
    max-width: 0; opacity: 0; flex: 0 0 0; margin: 0; padding: 0; border: 0;
  }
  /* 图标居中 */
  .sidebar.sidebar-collapsed .nav-item { justify-content: center; padding-left: 0; padding-right: 0; gap: 0; }
  .sidebar.sidebar-collapsed .nav-item .nav-ico { width: auto; }
  .sidebar.sidebar-collapsed .sidebar-toggle { justify-content: center; padding-left: 0; padding-right: 0; }
  .sidebar.sidebar-collapsed .nav-ico-img { margin: 0 auto; }
  /* 水印降透明度 + 缩小，避免干扰图标 */
  .sidebar.sidebar-collapsed .sidebar-watermark { opacity: 0.45; transform: scale(0.82); transform-origin: center; }
  /* 激活项竖条指示器（折叠态靠左边缘） */
  .sidebar.sidebar-collapsed .nav-item.active::before { left: -10px; top: 22%; height: 56%; width: 3px; }
}

/* ---------- 页面容器 ---------- */
.page { display: block; }
.page.hidden { display: none; }
#content.page { padding: 4px 4px 30px; }
/* 给固定悬浮的日历条留出空间，避免遮住主页底部内容 */
#dashboard { padding-bottom: 150px; }

/* ---------- 首页：欢迎区 ---------- */
.welcome-area {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--pink-card);
  border-radius: 20px;
  padding: 16px 20px;
  box-shadow: var(--shadow-card);
  margin-bottom: 16px;
}
.welcome-avatar {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--pink-soft);
  border: 3px solid var(--pink-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 34px;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition: transform 0.2s;
  flex-shrink: 0;
}
.welcome-avatar:active { transform: scale(0.92); }
.welcome-info { flex: 1; min-width: 0; }
.welcome-nick { font-size: 20px; font-weight: 800; color: var(--text-main); }
.welcome-date { font-size: 13px; color: var(--text-light); margin-top: 2px; }
.welcome-right { display: flex; align-items: center; gap: 12px; }
.welcome-points {
  font-size: 20px; font-weight: 800; color: var(--pink-deep);
  background: var(--pink-soft);
  padding: 8px 14px; border-radius: 16px;
  white-space: nowrap;
}
.welcome-points::before { content: '⭐ '; }
.theme-toggle-btn {
  width: 46px; height: 46px;
  border: none; border-radius: 50%;
  background: var(--pink-primary);
  font-size: 22px; cursor: pointer;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s;
}
.theme-toggle-btn:active { transform: scale(0.9) rotate(20deg); }

/* ---------- 首页：每日任务横幅 ---------- */
.daily-banner {
  position: relative;
  overflow: hidden;
  border-radius: 22px;
  padding: 22px 24px;
  background: var(--banner-grad);
  box-shadow: var(--shadow-card);
  margin-bottom: 16px;
  color: #5a4a66;
}
.banner-deco { position: absolute; pointer-events: none; }
.banner-cloud-1 { top: 14px; right: 90px; width: 70px; opacity: 0.85; }
.banner-castle { bottom: -6px; right: 26px; width: 76px; opacity: 0.85; }
.banner-balloon { top: 18px; right: 30px; width: 46px; opacity: 0.9; animation: balloonFloat 4s ease-in-out infinite; }
@keyframes balloonFloat { 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(-8px);} }
.banner-content { position: relative; z-index: 2; }
.banner-title { font-size: 21px; font-weight: 800; text-shadow: 0 1px 2px rgba(255,255,255,0.6); }
.banner-sub { font-size: 13px; margin-top: 6px; opacity: 0.85; }
.banner-energy { position: relative; z-index: 2; margin-top: 16px; }
.energy-label { font-size: 13px; font-weight: 700; margin-bottom: 6px; }
.energy-bar-bg {
  height: 14px; background: rgba(255,255,255,0.6);
  border-radius: 10px; overflow: hidden;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.08);
}
.energy-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #FFD93D, #FFB347);
  border-radius: 10px;
  transition: width 0.6s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 0 8px rgba(255,180,70,0.6);
}

/* ---------- 首页：今日作业总览 ---------- */
.section-title { font-size: 17px; font-weight: 800; color: var(--text-main); margin: 6px 4px 12px; }
.overview-scroll {
  max-height: 62vh;
  overflow-y: auto;
  padding-right: 4px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.overview-subject-title {
  font-size: 15px; font-weight: 800; color: var(--pink-deep);
  margin: 4px 2px; display: flex; align-items: center; gap: 6px;
}
.overview-list { display: flex; flex-direction: column; gap: 10px; }

/* 今日新闻（置顶） */
.news-section { margin: 4px 0 16px; }
.news-card { background: var(--pink-card); border-radius: 18px; padding: 14px 16px; box-shadow: var(--shadow-card); border: 2px solid var(--pink-border); }
.news-date { font-size: 12px; color: var(--text-light); margin-bottom: 8px; }
.news-item { display: flex; gap: 8px; align-items: baseline; padding: 4px 0; font-size: 14px; }
.news-no { flex-shrink: 0; min-width: 20px; height: 20px; line-height: 20px; text-align: center; border-radius: 50%; background: var(--pink-primary); color: #fff; font-size: 12px; font-weight: 800; }
.news-tag { font-weight: 800; color: var(--pink-deep); white-space: nowrap; }
.news-text { color: var(--text-main); }
.news-summary { margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--pink-border); font-size: 14px; line-height: 1.7; color: var(--text-main); }
.news-speak-btn { margin-top: 12px; border: none; background: var(--pink-primary); color: #fff; border-radius: 12px; padding: 9px 16px; font-size: 14px; font-weight: 700; cursor: pointer; }
.news-speak-btn:active { transform: scale(0.96); }

.task-card {
  display: block;
  background: var(--pink-card);
  border-radius: 18px;
  padding: 14px 16px;
  box-shadow: var(--shadow-card);
  border: 2px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.1s;
}
.task-card.highlight {
  border-color: var(--pink-deep);
  box-shadow: 0 0 0 4px var(--pink-primary);
}
.task-card.done { background: var(--pink-soft); }
.task-card-row { display: flex; align-items: center; gap: 12px; }
.task-index {
  width: 30px; height: 30px; flex-shrink: 0;
  border-radius: 50%; background: var(--pink-primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 14px;
}
.task-main { flex: 1; min-width: 0; }
.task-title { font-size: 16px; font-weight: 700; color: var(--text-main); word-break: break-word; }
.task-card.done .task-title { text-decoration: line-through; opacity: 0.6; }
.task-status { font-size: 12px; margin-top: 3px; }
.task-status.todo { color: var(--text-light); }
.task-status.done { color: var(--green-done); font-weight: 700; }
.task-mini-bar { height: 6px; background: var(--pink-light); border-radius: 4px; margin-top: 8px; overflow: hidden; }
.task-mini-fill { height: 100%; background: var(--green-done); border-radius: 4px; width: 0%; transition: width 0.4s; }
.task-check {
  width: 34px; height: 34px; flex-shrink: 0;
  border-radius: 50%; border: 2px solid var(--pink-border);
  background: #fff; color: var(--pink-deep);
  font-size: 18px; cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: transform 0.15s, background 0.2s;
}
.task-check:active { transform: scale(0.85); }
.task-card.done .task-check { background: var(--green-done); border-color: var(--green-done); color: #fff; }
.task-expand-btn {
  margin-left: 8px;
  border: none; background: var(--pink-soft); color: var(--pink-deep);
  border-radius: 12px; padding: 7px 12px; font-size: 13px; font-weight: 700; cursor: pointer;
  flex-shrink: 0;
}
.task-expand-btn:active { transform: scale(0.95); }

.task-detail {
  margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--pink-border);
  display: none; flex-direction: column; gap: 10px;
}
.task-detail.show { display: flex; }
.task-detail-note { font-size: 14px; color: var(--text-main); background: var(--pink-soft); border-radius: 12px; padding: 10px 12px; }
.task-detail-label { font-size: 12px; font-weight: 700; color: var(--text-light); }
.task-detail iframe, .task-detail img { width: 100%; border-radius: 12px; border: 1px solid var(--pink-border); background: #fff; }
.task-detail iframe { min-height: 220px; }
.task-detail img { max-height: 320px; object-fit: contain; }
.bili-iframe { display: block; width: 100%; height: 480px; border: 0; border-radius: 14px; margin-top: 8px; background: #000; }
.task-video-file { display: block; width: 100%; max-height: 480px; border-radius: 14px; margin-top: 8px; background: #000; }
.video-open-ext { display: block; margin-top: 8px; text-align: center; color: var(--pink-primary); font-size: 13px; font-weight: 700; text-decoration: none; }
.video-open-card { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; padding: 18px; border-radius: 14px; background: linear-gradient(135deg, #ff7eb3, #ff9a9e); color: #fff; font-weight: 800; font-size: 16px; text-decoration: none; }
.video-open-card .vj-play { font-size: 34px; line-height: 1; }
.video-open-card .vj-text { font-size: 15px; }
.video-open-card { display: flex; align-items: center; justify-content: center; gap: 10px; margin-top: 0; padding: 18px; border: 1px solid var(--pink-border); border-radius: 12px; background: linear-gradient(135deg, #ff7eb3, #ff9a9e); color: #fff; font-size: 16px; font-weight: 800; }
.video-block { margin-top: 8px; }
.video-b23-loading { padding: 16px; text-align: center; color: var(--text-light); font-size: 14px; border: 1px dashed var(--pink-border); border-radius: 12px; }
.video-b23-fallback { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 16px; border: 1px solid var(--pink-border); border-radius: 12px; background: var(--pink-card); }
.video-b23-text { font-size: 12px; color: var(--text-light); word-break: break-all; text-align: center; }
.video-play-btn { display: inline-block; padding: 10px 18px; border: none; border-radius: 12px; background: linear-gradient(135deg, #ff7eb3, #ff9a9e); color: #fff; font-size: 15px; font-weight: 800; cursor: pointer; -webkit-tap-highlight-color: transparent; }
.video-play-btn:active { filter: brightness(0.95); }
.video-modal-card { max-width: 520px; }
.video-modal-title { font-size: 16px; font-weight: 800; color: var(--pink-primary); margin-bottom: 12px; }
.video-modal-body { width: 100%; border-radius: 14px; overflow: hidden; background: #000; }
.video-modal-body iframe { display: block; width: 100%; height: 480px; border: 0; }
.video-open-card .vj-play { font-size: 26px; }
.admin-video-url { width: 100%; min-width: 280px; border: 2px solid var(--pink-border); border-radius: 10px; padding: 10px 12px; font-size: 14px; font-family: var(--font-main); color: var(--text-main); outline: none; }

/* 计时模块 */
.task-timer { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.task-timer-display {
  font-size: 15px; font-weight: 800; font-variant-numeric: tabular-nums;
  background: var(--pink-soft); border-radius: 10px; padding: 5px 10px; color: var(--pink-deep);
}
.task-timer-display.overtime { color: #e74c3c; background: #ffeaea; }
.task-timer-btn {
  border: none; border-radius: 10px; padding: 6px 12px; font-size: 13px; font-weight: 700;
  background: var(--pink-primary); color: #fff; cursor: pointer;
}
.task-timer-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.task-timer-info { font-size: 12px; color: var(--text-light); }
.task-overtime-total { font-size: 12px; color: #e74c3c; font-weight: 700; margin-top: 4px; }

/* ---------- 背单词 ---------- */
.vocab-layout { display: flex; gap: 16px; align-items: stretch; }
.vocab-left { width: 30%; min-width: 240px; }
.vocab-right { flex: 1; display: flex; flex-direction: column; gap: 14px; }
.vocab-card {
  background: var(--pink-card); border-radius: 20px; padding: 18px;
  box-shadow: var(--shadow-card); display: flex; flex-direction: column; gap: 12px;
}
.vocab-points { font-size: 22px; font-weight: 800; color: var(--pink-deep); }
.vocab-status { font-size: 14px; color: var(--text-light); }
.vocab-mode-label { font-size: 13px; font-weight: 700; color: var(--text-main); }
.vocab-modes { display: flex; gap: 8px; }
.vocab-mode-btn {
  flex: 1; border: 2px solid var(--pink-border); background: #fff; color: var(--text-main);
  border-radius: 14px; padding: 10px; font-size: 14px; font-weight: 700; cursor: pointer;
  font-family: var(--font-main);
}
.vocab-mode-btn.active { border-color: var(--pink-primary); background: var(--pink-soft); color: var(--pink-deep); }
.vocab-start-btn {
  border: none; border-radius: 16px; padding: 14px; font-size: 16px; font-weight: 800;
  background: var(--pink-primary); color: #fff; cursor: pointer; box-shadow: var(--shadow-card);
  font-family: var(--font-main);
}
.vocab-start-btn:active { transform: scale(0.97); }
.vocab-progress-text { font-size: 14px; color: var(--text-main); font-weight: 700; }
.vocab-today-count { font-size: 12px; color: var(--text-light); }

.vocab-play-area {
  background: var(--pink-card); border-radius: 20px; padding: 26px;
  box-shadow: var(--shadow-card); min-height: 280px; flex: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px;
}
.vocab-empty-tip { color: var(--text-light); font-size: 15px; text-align: center; }
.vocab-word-zh { font-size: 40px; font-weight: 800; color: var(--text-main); }
.vocab-word-en { font-size: 54px; font-weight: 800; color: var(--pink-deep); letter-spacing: 2px; }
.vocab-speak-btn {
  width: 70px; height: 70px; border-radius: 50%; border: none;
  background: var(--pink-primary); color: #fff; font-size: 30px; cursor: pointer;
  box-shadow: var(--shadow-card);
}
.vocab-speak-btn:active { transform: scale(0.92); }
.vocab-input {
  width: 100%; max-width: 380px; text-align: center; font-size: 26px; font-weight: 700;
  padding: 14px; border-radius: 16px; border: 3px solid var(--pink-border);
  font-family: var(--font-main); color: var(--text-main); outline: none;
}
.vocab-input:focus { border-color: var(--pink-primary); }
.vocab-input.correct { border-color: var(--green-done); background: var(--green-light); color: #2e7d4f; }
.vocab-input.wrong { border-color: #e74c3c; background: #ffeaea; color: #c0392b; }
.vocab-input:disabled { opacity: 0.85; }
.vocab-feedback { font-size: 18px; font-weight: 800; min-height: 26px; }
.vocab-feedback.correct { color: var(--green-done); }
.vocab-feedback.wrong { color: #e74c3c; }
.vocab-answer { font-size: 16px; color: var(--text-light); }
.vocab-next-btn {
  border: none; border-radius: 14px; padding: 12px 28px; font-size: 16px; font-weight: 800;
  background: var(--pink-deep); color: #fff; cursor: pointer;
}
.vocab-next-btn:active { transform: scale(0.97); }

.vocab-wrong-book { background: var(--pink-card); border-radius: 18px; padding: 16px; box-shadow: var(--shadow-card); }
.wrong-book-title { font-size: 15px; font-weight: 800; color: var(--text-main); margin-bottom: 8px; }
.wrong-book-list { display: flex; flex-wrap: wrap; gap: 8px; }
.wrong-book-empty { font-size: 13px; color: var(--text-light); }
.wrong-book-item {
  background: #ffeaea; color: #c0392b; border-radius: 12px; padding: 6px 12px;
  font-size: 14px; font-weight: 700;
}
.wrong-book-item b { color: var(--text-main); margin-left: 4px; font-weight: 600; }

@media (max-width: 820px) {
  .vocab-layout { flex-direction: column; }
  .vocab-left { width: 100%; }
}

/* ---------- 扭蛋机 ---------- */
.gacha-points { text-align: center; font-size: 24px; font-weight: 800; color: var(--pink-deep); margin-bottom: 10px; }
.gacha-machine-wrap { display: flex; flex-direction: column; align-items: center; gap: 18px; margin: 10px 0 24px; }
.gacha-machine { display: flex; justify-content: center; align-items: center; }
.gacha-machine-img {
  width: min(320px, 70vw); height: auto;
  border-radius: 24px;
  filter: drop-shadow(0 12px 24px rgba(0,0,0,0.12));
  transition: transform 0.2s;
  user-select: none; -webkit-user-drag: none;
}
.gacha-machine.spinning .gacha-machine-img { animation: gachaShake 0.5s ease-in-out 3; }
@keyframes gachaShake {
  0%,100% { transform: rotate(0) scale(1); }
  25% { transform: rotate(-5deg) scale(1.02); }
  75% { transform: rotate(5deg) scale(1.02); }
}
.gacha-play-btn {
  border: none; border-radius: 20px; padding: 16px 40px; font-size: 18px; font-weight: 800;
  background: var(--pink-deep); color: #fff; cursor: pointer; box-shadow: var(--shadow-card);
  font-family: var(--font-main);
}
.gacha-play-btn:active { transform: scale(0.97); }
.gacha-play-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.gacha-history { background: var(--pink-card); border-radius: 18px; padding: 16px; box-shadow: var(--shadow-card); }
.gacha-history-title { font-size: 15px; font-weight: 800; color: var(--text-main); margin-bottom: 10px; }
.gacha-history-list { display: flex; flex-wrap: wrap; gap: 10px; }
.gacha-history-empty { font-size: 13px; color: var(--text-light); }
.gacha-history-item {
  display: flex; align-items: center; gap: 6px; background: var(--pink-soft);
  border-radius: 14px; padding: 8px 12px; font-size: 14px; font-weight: 700; color: var(--text-main);
}
.gacha-history-item .gh-date { font-size: 11px; color: var(--text-light); font-weight: 500; }

/* 扭蛋结果弹窗 */
.gacha-result-card { text-align: center; }
.gacha-result-emoji { font-size: 70px; animation: popIn 0.5s ease; }
.gacha-result-title { color: var(--pink-deep); }
.gacha-result-name { font-size: 22px; font-weight: 800; color: var(--text-main); margin: 6px 0 14px; }
.gacha-result-close {
  border: none; border-radius: 16px; padding: 12px 30px; font-size: 16px; font-weight: 800;
  background: var(--pink-primary); color: #fff; cursor: pointer; font-family: var(--font-main);
}
@keyframes popIn { 0% { transform: scale(0); } 70% { transform: scale(1.2); } 100% { transform: scale(1); } }

/* ---------- 管理后台面板覆盖 ---------- */
#adminPanel:not(.hidden) {
  position: fixed;
  inset: 0;
  z-index: 500;
  overflow-y: auto;
  padding-bottom: 40px;
}

/* ---------- 皮肤选择弹窗 ---------- */
.skin-card { text-align: center; }
.skin-options { display: flex; gap: 12px; justify-content: center; margin-top: 14px; flex-wrap: wrap; }
.skin-option {
  border: 3px solid var(--pink-border); background: #fff; border-radius: 18px;
  padding: 14px; cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-family: var(--font-main); transition: border-color 0.2s, transform 0.1s;
}
.skin-option:active { transform: scale(0.96); }
.skin-option.active { border-color: var(--pink-deep); }
.skin-swatch { width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 32px; }
.sw-blue { background: #a8d8ea; }
.sw-unicorn { background: #e6d3f8; }
.sw-pudding { background: #fff4b8; }
.skin-name { font-size: 13px; font-weight: 700; color: var(--text-main); }

/* ---------- 后台：子标签 + 作业编辑增强 ---------- */
.admin-subtabs { display: flex; gap: 8px; flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; margin-bottom: 12px; padding-bottom: 4px; scrollbar-width: none; }
.admin-subtabs::-webkit-scrollbar { display: none; }
.admin-subtab {
  flex: 0 0 auto; white-space: nowrap;
  border: 2px solid var(--pink-border); background: #fff; color: var(--text-main);
  border-radius: 14px; padding: 10px 16px; font-size: 14px; font-weight: 700; cursor: pointer;
  font-family: var(--font-main);
}
.admin-subtab.active { background: var(--pink-primary); color: #fff; border-color: var(--pink-primary); }
.admin-subcontent { padding-bottom: 30px; }
.admin-edit-page { display: block; }

.admin-task-row {
  background: var(--pink-card); border-radius: 16px; padding: 12px 14px; margin-bottom: 10px;
  box-shadow: var(--shadow-card);
}
.admin-task-row-head { display: flex; align-items: center; gap: 8px; }
.admin-sort-btns { display: flex; flex-direction: column; }
.admin-sort-btn {
  border: none; background: var(--pink-soft); color: var(--pink-deep); border-radius: 6px;
  width: 26px; height: 20px; font-size: 12px; cursor: pointer; line-height: 1;
}
.admin-sort-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.admin-task-input {
  flex: 1; border: 2px solid var(--pink-border); border-radius: 12px; padding: 9px 12px;
  font-size: 14px; font-family: var(--font-main); color: var(--text-main); outline: none;
}
.admin-task-input:focus { border-color: var(--pink-primary); }
.admin-task-del {
  border: none; background: #ffeaea; color: #e74c3c; border-radius: 10px;
  width: 32px; height: 32px; font-size: 15px; cursor: pointer; flex-shrink: 0;
}
.admin-task-extra { margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--pink-border); display: flex; flex-direction: column; gap: 8px; }
.admin-field-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.admin-field-label { font-size: 12px; font-weight: 700; color: var(--text-light); min-width: 64px; }
.admin-field-input, .admin-task-note {
  flex: 1; border: 2px solid var(--pink-border); border-radius: 10px; padding: 8px 10px;
  font-size: 13px; font-family: var(--font-main); color: var(--text-main); outline: none; min-width: 160px;
}
.admin-task-note { resize: vertical; min-height: 56px; }
.admin-field-input:focus, .admin-task-note:focus { border-color: var(--pink-primary); }

.admin-type-tabs { display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap; }
.admin-type-tab {
  border: 2px solid var(--pink-border); background: #fff; color: var(--text-main);
  border-radius: 10px; padding: 6px 14px; font-size: 13px; font-weight: 700; cursor: pointer;
  font-family: var(--font-main);
}
.admin-type-tab.active { background: var(--pink-primary); color: #fff; border-color: var(--pink-primary); }
.admin-type-panel { display: none; margin-top: 8px; }
.admin-type-panel.active { display: block; }
.admin-rich-toolbar { display: flex; gap: 6px; margin-bottom: 6px; }
.admin-rich-btn {
  border: 2px solid var(--pink-border); background: #fff; border-radius: 8px; padding: 4px 10px;
  font-size: 13px; cursor: pointer; font-family: var(--font-main);
}
.admin-rich-editor {
  border: 2px solid var(--pink-border); border-radius: 10px; padding: 10px; min-height: 90px;
  font-size: 14px; color: var(--text-main); outline: none; background: #fff; overflow-y: auto; max-height: 200px;
}
.admin-rich-editor:focus { border-color: var(--pink-primary); }
.admin-file-info { font-size: 12px; color: var(--text-light); margin-top: 6px; word-break: break-all; }
.admin-file-warn { color: #e74c3c; font-weight: 700; }

.admin-add-btn, .admin-copy-btn {
  border: none; border-radius: 14px; padding: 12px; font-size: 14px; font-weight: 700;
  background: var(--pink-primary); color: #fff; cursor: pointer; font-family: var(--font-main); width: 100%;
}
.admin-copy-section { margin-top: 14px; }
.admin-copy-title { font-size: 13px; color: var(--text-light); margin-bottom: 8px; }

/* 后台：单词库管理 */
.admin-section-title { font-size: 16px; font-weight: 800; color: var(--pink-deep); margin: 4px 0 12px; }
.admin-textarea {
  width: 100%; border: 2px solid var(--pink-border); border-radius: 12px; padding: 12px;
  font-size: 14px; font-family: monospace; color: var(--text-main); min-height: 160px; outline: none; resize: vertical;
}
.admin-textarea:focus { border-color: var(--pink-primary); }
.admin-radio-row { display: flex; gap: 14px; flex-wrap: wrap; margin: 10px 0; }
.admin-radio { display: flex; align-items: center; gap: 6px; font-size: 14px; cursor: pointer; }
.admin-action-btn {
  border: none; border-radius: 14px; padding: 12px 22px; font-size: 14px; font-weight: 700;
  background: var(--pink-deep); color: #fff; cursor: pointer; font-family: var(--font-main);
}
.admin-action-btn.secondary { background: var(--pink-primary); }
.admin-word-preview { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 8px; }
.admin-word-chip { background: var(--pink-soft); border-radius: 12px; padding: 6px 12px; font-size: 13px; color: var(--text-main); }

/* 后台：扭蛋设置 */
.gacha-prize-row { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; flex-wrap: wrap; }
.gacha-prize-row input { border: 2px solid var(--pink-border); border-radius: 10px; padding: 8px 10px; font-size: 13px; outline: none; }
.gacha-prize-name { flex: 1; min-width: 120px; }
.gacha-prize-emoji { width: 48px; text-align: center; font-size: 18px; }
.gacha-prize-weight { width: 80px; }
.gacha-prize-del { border: none; background: #ffeaea; color: #e74c3c; border-radius: 10px; width: 32px; height: 32px; cursor: pointer; }
.gacha-cost-row { display: flex; align-items: center; gap: 8px; margin: 12px 0; }
.gacha-cost-input { width: 90px; border: 2px solid var(--pink-border); border-radius: 10px; padding: 8px 10px; font-size: 14px; outline: none; }

/* 后台：导入导出 */
.admin-data-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 12px 0; }
.admin-data-box { flex: 1; min-width: 240px; }
.admin-data-box textarea {
  width: 100%; border: 2px solid var(--pink-border); border-radius: 12px; padding: 12px;
  font-size: 13px; font-family: monospace; min-height: 140px; outline: none; resize: vertical;
}
.admin-data-hint { font-size: 12px; color: var(--text-light); margin-top: 6px; }

/* =====================================================
   左侧导航栏皮肤适配（深蓝 / 深紫 / 深黄 + 云/星/月 水印）
   通过 data-theme 控制，不写死样式
   ===================================================== */
[data-theme="blue"] .sidebar {
  background: #529cbf; border-right-color: rgba(255,255,255,0.25);
}
[data-theme="blue"] .sidebar-logo,
[data-theme="blue"] .nav-item,
[data-theme="blue"] .sidebar-toggle,
[data-theme="blue"] .admin-nav-btn { color: #fff; }
[data-theme="blue"] .nav-item:hover,
[data-theme="blue"] .sidebar-toggle:hover { background: rgba(255,255,255,0.18); }
[data-theme="blue"] .nav-item.active { background: rgba(255,255,255,0.30); color: #fff; }
[data-theme="blue"] .nav-item.active::before { background: #fff; }
[data-theme="blue"] .sidebar-footer { border-top-color: rgba(255,255,255,0.25); }
[data-theme="blue"] .nav-divider { background: rgba(255,255,255,0.25); }
[data-theme="blue"] .sidebar-nav .nav-item:not(:first-child) { border-top: 1px solid rgba(255,255,255,0.22); }
[data-theme="blue"] .sidebar-watermark .wm-cloud { display: block; }

[data-theme="unicorn"] .sidebar {
  background: #a37fc8; border-right-color: rgba(255,255,255,0.25);
}
[data-theme="unicorn"] .sidebar-logo,
[data-theme="unicorn"] .nav-item,
[data-theme="unicorn"] .sidebar-toggle,
[data-theme="unicorn"] .admin-nav-btn { color: #fff; }
[data-theme="unicorn"] .nav-item:hover,
[data-theme="unicorn"] .sidebar-toggle:hover { background: rgba(255,255,255,0.18); }
[data-theme="unicorn"] .nav-item.active { background: rgba(255,255,255,0.30); color: #fff; }
[data-theme="unicorn"] .nav-item.active::before { background: #fff; }
[data-theme="unicorn"] .sidebar-footer { border-top-color: rgba(255,255,255,0.25); }
[data-theme="unicorn"] .nav-divider { background: rgba(255,255,255,0.25); }
[data-theme="unicorn"] .sidebar-nav .nav-item:not(:first-child) { border-top: 1px solid rgba(255,255,255,0.22); }
[data-theme="unicorn"] .sidebar-watermark .wm-star { display: block; }

[data-theme="pudding"] .sidebar {
  background: #e4bb4e; border-right-color: rgba(90,74,0,0.25);
}
[data-theme="pudding"] .sidebar-logo,
[data-theme="pudding"] .nav-item,
[data-theme="pudding"] .sidebar-toggle,
[data-theme="pudding"] .admin-nav-btn { color: #4a3a00; }
[data-theme="pudding"] .nav-item:hover,
[data-theme="pudding"] .sidebar-toggle:hover { background: rgba(90,74,0,0.12); }
[data-theme="pudding"] .nav-item.active { background: rgba(90,74,0,0.20); color: #4a3a00; }
[data-theme="pudding"] .nav-item.active::before { background: #4a3a00; }
[data-theme="pudding"] .sidebar-footer { border-top-color: rgba(90,74,0,0.25); }
[data-theme="pudding"] .nav-divider { background: rgba(90,74,0,0.25); }
[data-theme="pudding"] .sidebar-nav .nav-item:not(:first-child) { border-top: 1px solid rgba(90,74,0,0.18); }
[data-theme="pudding"] .sidebar-watermark .wm-paw { display: block; }

/* 非当前皮肤的水印隐藏 */
[data-theme="blue"] .sidebar-watermark .wm-star,
[data-theme="blue"] .sidebar-watermark .wm-moon,
[data-theme="blue"] .sidebar-watermark .wm-paw,
[data-theme="unicorn"] .sidebar-watermark .wm-cloud,
[data-theme="unicorn"] .sidebar-watermark .wm-moon,
[data-theme="unicorn"] .sidebar-watermark .wm-paw,
[data-theme="pudding"] .sidebar-watermark .wm-cloud,
[data-theme="pudding"] .sidebar-watermark .wm-star,
[data-theme="pudding"] .sidebar-watermark .wm-moon { display: none; }

/* ============ 背单词：学习区块 ============ */
.vocab-study-en { font-size: 54px; font-weight: 800; color: var(--pink-deep); letter-spacing: 2px; text-align: center; }
.vocab-study-zh { font-size: 28px; font-weight: 800; color: var(--text-main); text-align: center; margin-top: 4px; }
.vocab-redo-btn { margin-top: 16px; border: none; border-radius: 16px; padding: 12px 28px; font-size: 16px; font-weight: 800; background: var(--pink-primary); color: #fff; cursor: pointer; font-family: var(--font-main); }

/* ============ 前台字号：大 / 超大（后台可设置） ============ */
.main-area.fs-lg .welcome-nick { font-size: 23px; }
.main-area.fs-lg .welcome-date,
.main-area.fs-lg .banner-sub,
.main-area.fs-lg .energy-label { font-size: 15px; }
.main-area.fs-lg .banner-title { font-size: 25px; }
.main-area.fs-lg .section-title { font-size: 20px; }
.main-area.fs-lg .news-date,
.main-area.fs-lg .news-item,
.main-area.fs-lg .news-summary { font-size: 16px; }
.main-area.fs-lg .task-title,
.main-area.fs-lg .task-text { font-size: 20px; }
.main-area.fs-lg .task-detail-note,
.main-area.fs-lg .task-detail-label,
.main-area.fs-lg .task-status { font-size: 16px; }
.main-area.fs-lg .task-timer-display { font-size: 17px; }
.main-area.fs-lg .vocab-points { font-size: 26px; }
.main-area.fs-lg .vocab-status,
.main-area.fs-lg .vocab-mode-label,
.main-area.fs-lg .vocab-progress-text,
.main-area.fs-lg .vocab-today-count { font-size: 16px; }
.main-area.fs-lg .vocab-word-zh { font-size: 46px; }
.main-area.fs-lg .vocab-word-en { font-size: 62px; }
.main-area.fs-lg .vocab-input { font-size: 30px; }
.main-area.fs-lg .vocab-feedback { font-size: 21px; }
.main-area.fs-lg .vocab-answer { font-size: 18px; }
.main-area.fs-lg .vocab-study-en { font-size: 62px; }
.main-area.fs-lg .vocab-study-zh { font-size: 32px; }
.main-area.fs-lg .wrong-book-title,
.main-area.fs-lg .wrong-book-item,
.main-area.fs-lg .wrong-book-empty { font-size: 16px; }
.main-area.fs-lg .gacha-points { font-size: 28px; }
.main-area.fs-lg .gacha-history-title,
.main-area.fs-lg .gacha-history-item,
.main-area.fs-lg .gacha-history-empty { font-size: 16px; }
.main-area.fs-lg .pet-name { font-size: 23px; }
.main-area.fs-lg .pet-status-text { font-size: 16px; }
.main-area.fs-lg .stats-points-label { font-size: 18px; }
.main-area.fs-lg .tab-name { font-size: 16px; }
.main-area.fs-lg .empty-state .empty-text { font-size: 18px; }

.main-area.fs-xl .welcome-nick { font-size: 27px; }
.main-area.fs-xl .welcome-date,
.main-area.fs-xl .banner-sub,
.main-area.fs-xl .energy-label { font-size: 18px; }
.main-area.fs-xl .banner-title { font-size: 28px; }
.main-area.fs-xl .section-title { font-size: 23px; }
.main-area.fs-xl .news-date,
.main-area.fs-xl .news-item,
.main-area.fs-xl .news-summary { font-size: 19px; }
.main-area.fs-xl .task-title,
.main-area.fs-xl .task-text { font-size: 23px; }
.main-area.fs-xl .task-detail-note,
.main-area.fs-xl .task-detail-label,
.main-area.fs-xl .task-status { font-size: 18px; }
.main-area.fs-xl .task-timer-display { font-size: 20px; }
.main-area.fs-xl .vocab-points { font-size: 30px; }
.main-area.fs-xl .vocab-status,
.main-area.fs-xl .vocab-mode-label,
.main-area.fs-xl .vocab-progress-text,
.main-area.fs-xl .vocab-today-count { font-size: 19px; }
.main-area.fs-xl .vocab-word-zh { font-size: 52px; }
.main-area.fs-xl .vocab-word-en { font-size: 72px; }
.main-area.fs-xl .vocab-input { font-size: 34px; }
.main-area.fs-xl .vocab-feedback { font-size: 24px; }
.main-area.fs-xl .vocab-answer { font-size: 22px; }
.main-area.fs-xl .vocab-study-en { font-size: 72px; }
.main-area.fs-xl .vocab-study-zh { font-size: 36px; }
.main-area.fs-xl .wrong-book-title,
.main-area.fs-xl .wrong-book-item,
.main-area.fs-xl .wrong-book-empty { font-size: 19px; }
.main-area.fs-xl .gacha-points { font-size: 32px; }
.main-area.fs-xl .gacha-history-title,
.main-area.fs-xl .gacha-history-item,
.main-area.fs-xl .gacha-history-empty { font-size: 19px; }
.main-area.fs-xl .pet-name { font-size: 27px; }
.main-area.fs-xl .pet-status-text { font-size: 19px; }
.main-area.fs-xl .stats-points-label { font-size: 22px; }
.main-area.fs-xl .tab-name { font-size: 19px; }
.main-area.fs-xl .empty-state .empty-text { font-size: 20px; }

