/* 植物大战僵尸识字乐园 - 主样式 */
:root {
  --bg: #e8f5d8;
  --bg2: #fff8e1;
  --primary: #4caf50;
  --primary-dark: #388e3c;
  --accent: #ff9800;
  --accent-dark: #f57c00;
  --danger: #e53935;
  --text: #2e3a1e;
  --text-light: #6b7a5a;
  --card: #ffffff;
  --shadow: 0 4px 12px rgba(0,0,0,0.08);
  --radius: 16px;
  --grass-dark: #7cbf5a;
  --grass-light: #8fd068;
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
html, body { font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", "Twemoji Mozilla", sans-serif; background: linear-gradient(180deg, var(--bg), var(--bg2)); color: var(--text); min-height: 100vh; font-size: 16px; line-height: 1.5; }
#app { max-width: 820px; margin: 0 auto; padding: 0 12px 40px; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
a { color: var(--primary-dark); text-decoration: none; }
.tip { color: var(--text-light); font-size: 13px; margin: 4px 0; }
.back { display: inline-block; margin: 8px 0; color: var(--primary-dark); font-size: 14px; padding: 6px 10px; border-radius: 8px; background: rgba(76,175,80,0.1); }
.section { margin: 20px 0; }
.section-head { display: flex; justify-content: space-between; align-items: center; }
.section h2, h2 { font-size: 20px; margin: 12px 0; color: var(--primary-dark); }
h1 { font-size: 22px; color: var(--primary-dark); margin-bottom: 6px; }

/* 顶栏 */
.topbar { position: sticky; top: 0; z-index: 50; display: flex; justify-content: space-between; align-items: center; background: rgba(255,255,255,0.92); backdrop-filter: blur(8px); padding: 10px 14px; border-radius: 0 0 16px 16px; box-shadow: var(--shadow); margin: 0 -12px 16px; }
.topbar .brand { font-size: 18px; font-weight: 700; color: var(--primary-dark); }
.stats { display: flex; align-items: center; gap: 10px; }
.stat { display: flex; align-items: center; gap: 4px; font-size: 15px; font-weight: 600; color: var(--text); background: #fff8e1; padding: 4px 10px; border-radius: 20px; }
.stat b { color: var(--accent-dark); }
.mini-btn { background: #fff; border: 1px solid #ddd; border-radius: 10px; padding: 4px 8px; font-size: 14px; }

/* 首页 hero */
.hero { display: flex; justify-content: space-between; align-items: center; gap: 16px; background: linear-gradient(135deg, #fffbe6, #e8f5d8); padding: 20px; border-radius: var(--radius); box-shadow: var(--shadow); margin: 12px 0 20px; flex-wrap: wrap; }
.hero-left { flex: 1; min-width: 200px; }
.hero-left p { color: var(--text-light); margin-bottom: 8px; }
.progress-ring-wrap { position: relative; width: 140px; height: 140px; }
.progress-ring { display: block; }
.progress-text { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: center; align-items: center; }
.progress-text .big { font-size: 26px; font-weight: 800; color: var(--primary-dark); }
.progress-text .small { font-size: 12px; color: var(--text-light); }
.checkin-btn { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: #fff; padding: 14px 18px; border-radius: 14px; font-size: 15px; font-weight: 700; box-shadow: 0 4px 10px rgba(245,124,0,0.3); }
.checkin-btn.done { background: #bdc; color: #fff; opacity: 0.7; }

/* 任务清单 */
.task-grid { display: grid; grid-template-columns: 1fr; gap: 10px; }
.task-card { display: flex; align-items: center; gap: 12px; background: var(--card); padding: 14px; border-radius: 14px; box-shadow: var(--shadow); border-left: 6px solid var(--primary); transition: transform .15s; }
.task-card.done { border-left-color: var(--accent); background: #fff8e1; opacity: 0.85; }
.task-card:hover { transform: translateY(-2px); }
.task-emoji { font-size: 32px; }
.task-info { flex: 1; }
.task-name { font-weight: 700; font-size: 16px; color: var(--primary-dark); }
.task-desc { font-size: 12px; color: var(--text-light); }
.task-badge { color: var(--primary); font-weight: 700; font-size: 14px; }
.go-btn { background: var(--primary); color: #fff; padding: 8px 16px; border-radius: 10px; font-size: 14px; font-weight: 600; }
.go-btn:hover { background: var(--primary-dark); }

/* 花园 */
.garden-grid { display: grid; grid-template-columns: repeat(9, 1fr); grid-template-rows: repeat(5, 1fr); gap: 2px; background: #5a8a3a; padding: 6px; border-radius: 12px; aspect-ratio: 9/5; max-height: 360px; }
.cell { position: relative; display: flex; align-items: center; justify-content: center; border-radius: 4px; min-height: 40px; overflow: visible; }
.cell.dark { background: var(--grass-dark); }
.cell.light { background: var(--grass-light); }
.plant-in-cell, .zombie-in-cell { width: 100%; height: 100%; display: flex; align-items: flex-end; justify-content: center; pointer-events: none; }
.plant-in-cell svg { width: 90% !important; height: 90% !important; max-width: 64px; max-height: 64px; }
.zombie-in-cell svg { width: 80% !important; height: 80% !important; max-width: 56px; max-height: 56px; }
.zombie-in-cell { position: absolute; right: 0; bottom: 0; width: 80%; height: 80%; animation: bob 1.2s ease-in-out infinite; }
.plant-in-cell { animation: sway 2.5s ease-in-out infinite; }
@keyframes sway { 0%,100% { transform: rotate(-2deg); } 50% { transform: rotate(2deg); } }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-3px); } }
.garden-stats { text-align: center; color: var(--text-light); font-size: 13px; margin: 8px 0; }
.legend { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 8px; margin-top: 12px; }
.legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-light); background: #fff; padding: 6px 8px; border-radius: 8px; }
.alert { background: #ffebee; color: var(--danger); padding: 10px 14px; border-radius: 10px; font-size: 14px; margin: 10px 0; border-left: 4px solid var(--danger); }
.ok { background: #e8f5d8; color: var(--primary-dark); padding: 10px 14px; border-radius: 10px; font-size: 14px; margin: 10px 0; }

/* 大入口按钮 */
.big-enter-btn { display: block; text-align: center; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; padding: 16px; border-radius: 14px; font-size: 18px; font-weight: 700; box-shadow: var(--shadow); }
.footer-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.ghost-btn { background: #fff; border: 1px solid #c8d8b8; padding: 8px 14px; border-radius: 10px; font-size: 13px; color: var(--text); }
.ghost-btn:hover { border-color: var(--primary); }
.link { font-size: 13px; color: var(--primary-dark); }

/* 课本 */
.book-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; margin: 14px 0; }
.book-card .book-cover { font-size: 32px; display: inline-block; }
.book-card .book-info { display: inline-block; vertical-align: middle; margin-left: 8px; }
.book-card h3 { color: var(--primary-dark); font-size: 18px; margin: 0; }
.book-sub { color: var(--text-light); font-size: 13px; }
.book-theme { color: var(--text); font-size: 12px; margin-top: 2px; }
.book-lessons { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 8px; margin-top: 12px; }
.lesson-card { display: block; background: #f4f9ec; border-radius: 10px; padding: 10px; text-align: center; border: 1px solid #d4e3c0; }
.lesson-card:hover { background: #e8f5d8; }
.lesson-no { font-size: 11px; color: var(--text-light); }
.lesson-title { font-size: 14px; font-weight: 600; color: var(--primary-dark); }
.lesson-progress { font-size: 11px; color: var(--accent-dark); }

/* 指读识字 */
.lesson-head { display: flex; justify-content: space-between; align-items: center; background: #fff; padding: 10px 14px; border-radius: 10px; box-shadow: var(--shadow); margin: 8px 0; }
.char-dots { display: flex; gap: 6px; justify-content: center; margin: 12px 0; flex-wrap: wrap; }
.dot { width: 28px; height: 28px; border-radius: 50%; background: #fff; display: flex; align-items: center; justify-content: center; font-size: 13px; color: var(--text-light); border: 2px solid #ddd; }
.dot.active { background: var(--accent); color: #fff; border-color: var(--accent-dark); }
.dot.done { background: var(--primary); color: #fff; border-color: var(--primary-dark); }
.char-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; text-align: center; margin: 12px 0; }
.char-big { font-size: 96px; line-height: 1.2; color: var(--primary-dark); font-family: "Kaiti SC", "STKaiti", serif; margin-bottom: 8px; }
.char-meta { background: #f4f9ec; border-radius: 10px; padding: 10px; margin: 8px auto; max-width: 280px; }
.meta-row { display: flex; justify-content: space-between; font-size: 14px; padding: 4px 0; }
.meta-k { color: var(--text-light); }
.meta-v { color: var(--text); font-weight: 600; }
.char-actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin: 12px 0; }
.action-btn { background: #f4f9ec; border: 1px solid #d4e3c0; padding: 8px 14px; border-radius: 10px; font-size: 14px; color: var(--primary-dark); }
.action-btn.primary { background: var(--primary); color: #fff; border-color: var(--primary-dark); }
.char-scene { color: var(--text-light); font-size: 13px; background: #fff8e1; padding: 8px 12px; border-radius: 8px; margin: 10px 0; }
.char-words { display: grid; grid-template-columns: repeat(auto-fit, minmax(100px, 1fr)); gap: 8px; margin: 12px 0; }
.word-box { background: #f4f9ec; border-radius: 10px; padding: 10px; }
.word-text { font-size: 20px; font-weight: 700; color: var(--primary-dark); }
.big-btn { display: block; width: 100%; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; padding: 14px; border-radius: 12px; font-size: 16px; font-weight: 700; margin: 12px 0 0; }
.char-nav { display: flex; justify-content: space-between; margin: 12px 0; }

/* 游戏通用 */
.game-head { display: flex; justify-content: space-between; align-items: center; margin: 12px 0; }
.game-score { color: var(--accent-dark); font-weight: 600; font-size: 14px; }
.game-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 16px 0; }
.game-card { background: linear-gradient(135deg, #fff, #f4f9ec); border: 2px solid #d4e3c0; padding: 24px; border-radius: 16px; font-size: 18px; font-weight: 700; color: var(--primary-dark); }
.game-card:hover { background: var(--primary); color: #fff; }
.big-play { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: #fff; padding: 18px 32px; border-radius: 50px; font-size: 20px; font-weight: 700; box-shadow: 0 6px 16px rgba(245,124,0,0.3); }
.game-question { text-align: center; margin: 24px 0; }
.pic-hint { background: #fff8e1; padding: 20px; border-radius: 14px; }
.pic-emoji { font-size: 80px; }
.pic-word { font-size: 24px; color: var(--accent-dark); font-weight: 700; margin: 8px 0; }
.game-options { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 20px 0; }
.option { background: #fff; border: 2px solid #d4e3c0; padding: 20px; border-radius: 14px; font-size: 32px; font-family: "Kaiti SC", "STKaiti", serif; color: var(--primary-dark); }
.option:hover { background: #f4f9ec; border-color: var(--primary); }
.game-feedback { padding: 14px; border-radius: 10px; font-size: 15px; text-align: center; margin: 12px 0; }
.game-feedback.ok { background: #e8f5d8; color: var(--primary-dark); }
.game-feedback.wrong { background: #ffebee; color: var(--danger); }

/* 找字 */
.find-target { text-align: center; margin: 16px 0; display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap; }
.find-char { font-size: 48px; color: var(--accent-dark); font-weight: 800; font-family: "Kaiti SC", "STKaiti", serif; }
.find-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 16px 0; }
.find-cell { background: #fff; border: 2px solid #d4e3c0; aspect-ratio: 1; border-radius: 10px; font-size: 28px; font-family: "Kaiti SC", "STKaiti", serif; color: var(--primary-dark); display: flex; align-items: center; justify-content: center; }
.find-cell.found { background: #c8e6c9; border-color: var(--primary); }
.find-cell.wrong { background: #ffcdd2; border-color: var(--danger); animation: shake 0.3s; }
@keyframes shake { 0%,100%{transform:translateX(0);} 25%{transform:translateX(-4px);} 75%{transform:translateX(4px);} }

/* 词语/童谣 */
.word-card, .rhyme-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; text-align: center; margin: 12px 0; }
.word-big, .rhyme-text { font-size: 36px; font-weight: 700; color: var(--primary-dark); font-family: "Kaiti SC", "STKaiti", serif; margin: 12px 0; line-height: 1.8; }
.word-explain, .rhyme-meta, .word-sentence, .rhyme-counter { color: var(--text-light); font-size: 14px; margin: 8px 0; }
.word-actions, .rhyme-actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin: 14px 0; }
.word-progress { text-align: center; color: var(--accent-dark); font-weight: 600; margin: 8px 0; }

/* Toast */
.toast { position: fixed; top: 80px; left: 50%; transform: translate(-50%, -20px); background: #333; color: #fff; padding: 12px 20px; border-radius: 24px; font-size: 14px; z-index: 1000; opacity: 0; transition: all .3s; box-shadow: 0 6px 20px rgba(0,0,0,0.25); max-width: 90%; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast-success { background: var(--primary-dark); }
.toast-info { background: #555; }
.toast-warn { background: var(--accent-dark); }

/* 飘落阳光 */
.sun-float { position: fixed; width: 36px; height: 36px; z-index: 999; cursor: pointer; animation: sunDrop 2s ease-in forwards; }
@keyframes sunDrop { 0% { transform: translateY(-50px) rotate(0); opacity: 0; } 20% { opacity: 1; } 100% { transform: translateY(60vh) rotate(360deg); opacity: 0.9; } }

/* 响应式 */
@media (max-width: 600px) {
  .char-big { font-size: 72px; }
  .garden-grid { max-height: 280px; }
  .find-grid { grid-template-columns: repeat(4, 1fr); }
  .hero { flex-direction: column; align-items: flex-start; }
  .progress-ring-wrap { width: 110px; height: 110px; }
  .progress-ring { width: 110px; height: 110px; }
  .topbar .brand { font-size: 16px; }
  .stat { font-size: 13px; }
}