/* ===== 剑桥英语打卡 H5 —— 设计系统 =====
   主蓝 #2F6BFF | PU橙 #FF8A3D | Think紫 #7C5CFF | 成长绿 #22C58B | 火焰 #FF7A45 | 文字 #1B2230 */
:root {
  --blue: #2F6BFF;
  --blue-soft: #EAF0FF;
  --pu: #FF8A3D;
  --pu-soft: #FFF1E6;
  --think: #7C5CFF;
  --think-soft: #F1EDFF;
  --green: #22C58B;
  --green-soft: #E6F9F1;
  --flame: #FF7A45;
  --text: #1B2230;
  --text-2: #6B7280;
  --text-3: #9CA3AF;
  --bg: #F5F7FB;
  --card: #FFFFFF;
  --line: #EEF1F6;
  --radius: 20px;
  --radius-s: 12px;
  --shadow: 0 8px 24px rgba(31, 51, 112, .08);
}
* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { height: 100%; }
body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Inter, sans-serif;
  background: #E9EDF5; color: var(--text);
  display: flex; justify-content: center;
}
.phone {
  width: 100%; max-width: 480px; min-height: 100vh;
  background: var(--bg); position: relative;
  padding-bottom: calc(72px + env(safe-area-inset-bottom));
}

/* ---- 顶部 ---- */
.page { padding: 20px 16px 24px; animation: fadeIn .25s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.page-title { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.page-sub { font-size: 13px; color: var(--text-2); margin-bottom: 16px; }

/* ---- 卡片 ---- */
.card {
  background: var(--card); border-radius: var(--radius);
  padding: 16px; box-shadow: var(--shadow); margin-bottom: 14px;
}
.card-title { font-size: 15px; font-weight: 600; margin-bottom: 12px; display: flex; align-items: center; justify-content: space-between; }

/* ---- 通用 ---- */
.row { display: flex; align-items: center; }
.gap8 { gap: 8px; } .gap12 { gap: 12px; }
.grow { flex: 1; }
.muted { color: var(--text-2); font-size: 13px; }
.small { font-size: 12px; color: var(--text-3); }
.mt8 { margin-top: 8px; } .mt16 { margin-top: 16px; }

.btn {
  display: block; width: 100%; border: 0; border-radius: 16px;
  padding: 14px; font-size: 16px; font-weight: 600; color: #fff;
  background: var(--blue); cursor: pointer; text-align: center;
  transition: transform .1s ease, opacity .15s;
}
.btn:active { transform: scale(.97); }
.btn[disabled] { opacity: .5; pointer-events: none; }
.btn-ghost { background: #fff; color: var(--blue); border: 1.5px solid var(--blue); }
.btn-green { background: var(--green); }
.btn-danger { background: #F04438; }
.btn-sm { display: inline-block; width: auto; padding: 8px 18px; font-size: 14px; border-radius: 12px; }

.input {
  width: 100%; border: 1.5px solid var(--line); border-radius: 14px;
  padding: 13px 14px; font-size: 15px; background: #fff; outline: none;
  transition: border-color .15s;
}
.input:focus { border-color: var(--blue); }
.label { font-size: 13px; color: var(--text-2); margin: 14px 0 6px; display: block; }

/* ---- TabBar ---- */
.tabbar {
  position: fixed; bottom: 0; left: 50%; transform: translateX(-50%);
  width: 100%; max-width: 480px;
  background: #fff; border-top: 1px solid var(--line);
  display: flex; padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
  z-index: 50;
}
.tabbar a {
  flex: 1; text-align: center; text-decoration: none;
  color: var(--text-3); font-size: 11px; padding: 4px 0;
}
.tabbar a .ico { font-size: 22px; display: block; line-height: 1.2; }
.tabbar a.on { color: var(--blue); font-weight: 600; }

/* ---- 进度条 ---- */
.bar { height: 10px; border-radius: 6px; background: #EDF0F7; overflow: hidden; flex: 1; }
.bar > i { display: block; height: 100%; border-radius: 6px; background: var(--blue); transition: width .4s ease; }
.bar.pu > i { background: var(--pu); }
.bar.think > i { background: var(--think); }
.bar.green > i { background: var(--green); }

/* ---- 徽章/标签 ---- */
.tag {
  display: inline-block; font-size: 12px; padding: 3px 10px; border-radius: 999px;
}
.tag-blue { background: var(--blue-soft); color: var(--blue); }
.tag-pu { background: var(--pu-soft); color: var(--pu); }
.tag-think { background: var(--think-soft); color: var(--think); }
.tag-green { background: var(--green-soft); color: var(--green); }
.tag-gray { background: #F0F2F7; color: var(--text-2); }
.tag-red { background: #FEECEB; color: #F04438; }

/* ---- 首页头部 ---- */
.hero {
  background: linear-gradient(135deg, #2F6BFF 0%, #5B8CFF 100%);
  border-radius: 24px; color: #fff; padding: 20px; margin-bottom: 14px;
  box-shadow: 0 12px 28px rgba(47, 107, 255, .28);
}
.hero .hi { font-size: 18px; font-weight: 700; }
.hero .sub { font-size: 12px; opacity: .85; margin-top: 2px; }
.stat-row { display: flex; gap: 10px; margin-top: 16px; }
.stat {
  flex: 1; background: rgba(255,255,255,.16); border-radius: 14px;
  padding: 10px 12px; text-align: center;
}
.stat b { font-size: 20px; display: block; }
.stat span { font-size: 11px; opacity: .85; }

/* ---- 打卡三入口 ---- */
.task-grid { display: flex; gap: 12px; }
.task-item {
  flex: 1; background: #fff; border-radius: var(--radius); padding: 16px 0;
  text-align: center; box-shadow: var(--shadow); text-decoration: none; color: var(--text);
  border: 1.5px solid transparent; transition: border-color .15s;
}
.task-item.done { border-color: var(--green); }
.task-item .emoji { font-size: 30px; display: block; margin-bottom: 6px; }
.task-item b { font-size: 14px; display: block; }
.task-item .pt { font-size: 11px; color: var(--text-3); margin-top: 2px; display: block; }

/* ---- 勋章墙 ---- */
.badge-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.badge-cell {
  background: #fff; border-radius: 18px; padding: 16px 8px; text-align: center;
  box-shadow: var(--shadow);
}
.badge-cell.locked { opacity: .45; filter: grayscale(1); }
.badge-cell .emoji { font-size: 34px; display: block; }
.badge-cell b { font-size: 13px; display: block; margin-top: 6px; }
.badge-cell .small { margin-top: 2px; display: block; }

/* ---- 列表项 ---- */
.list-item {
  display: flex; align-items: center; gap: 12px;
  background: #fff; border-radius: 16px; padding: 14px; margin-bottom: 10px;
  box-shadow: var(--shadow);
}
.list-item .emoji { font-size: 24px; }

/* ---- 选项（测验）---- */
.opt {
  display: block; width: 100%; text-align: left;
  border: 1.5px solid var(--line); background: #fff; border-radius: 14px;
  padding: 13px 14px; font-size: 15px; margin-bottom: 10px; cursor: pointer;
}
.opt.on { border-color: var(--blue); background: var(--blue-soft); color: var(--blue); font-weight: 600; }
.opt.correct { border-color: var(--green); background: var(--green-soft); color: var(--green); }
.opt.wrong { border-color: #F04438; background: #FEECEB; color: #F04438; }

/* ---- 录音 ---- */
.rec-btn {
  width: 108px; height: 108px; border-radius: 50%; border: 0; margin: 20px auto;
  background: var(--flame); color: #fff; font-size: 15px; font-weight: 600;
  box-shadow: 0 12px 28px rgba(255, 122, 69, .35); cursor: pointer; display: block;
}
.rec-btn.recording { background: #F04438; animation: pulse 1.2s infinite; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(240,68,56,.4); } 50% { box-shadow: 0 0 0 16px rgba(240,68,56,0); } }

audio, video { width: 100%; margin-top: 10px; border-radius: 12px; }

/* ---- 空状态 / Toast ---- */
.empty { text-align: center; padding: 48px 0; color: var(--text-3); font-size: 14px; }
.empty .emoji { font-size: 40px; display: block; margin-bottom: 8px; }
#toast {
  position: fixed; top: 18%; left: 50%; transform: translateX(-50%);
  background: rgba(27, 34, 48, .92); color: #fff; font-size: 14px;
  padding: 10px 20px; border-radius: 12px; z-index: 99; display: none; max-width: 80%;
}

/* ---- 角色选择 ---- */
.role-pick { display: flex; gap: 10px; }
.role-pick label {
  flex: 1; text-align: center; border: 1.5px solid var(--line); border-radius: 14px;
  padding: 12px 4px; font-size: 14px; cursor: pointer;
}
.role-pick input { display: none; }
.role-pick label.on { border-color: var(--blue); background: var(--blue-soft); color: var(--blue); font-weight: 600; }

/* ---- 批改 ---- */
textarea.input { resize: none; min-height: 72px; }
.sub-badge { font-size: 11px; color: var(--text-3); }

/* ===== 教材单元选择 ===== */
.unit-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.unit-chips .chip {
  border: 1.5px solid var(--line); background: #fff; color: var(--text);
  border-radius: 999px; padding: 6px 14px; font-size: 13px; font-weight: 600; cursor: pointer;
}
.unit-chips .chip.on { border-color: var(--blue); background: var(--blue); color: #fff; }
.unit-words { display: flex; flex-wrap: wrap; gap: 6px; }
.word-pill {
  background: #F2F6FF; color: var(--text); border-radius: 999px;
  padding: 4px 10px; font-size: 12.5px; line-height: 1.5;
}
.word-pill b { color: var(--blue); margin-right: 4px; }
.word-pill.pattern { background: #FFF4EC; }
.word-pill.pattern::before { content: '🗣 '; }