/* ============================================================
 * styles.css — 英语口语小达人
 * 暖色系 / 大圆角 / 手机优先，无任何外部依赖
 * ============================================================ */
:root {
  --coral: #ff6b6b;
  --coral-dark: #e85555;
  --teal: #2ec4b6;
  --teal-dark: #1fa89b;
  --yellow: #ffd93d;
  --orange: #ff9f43;
  --purple: #a78bfa;
  --ink: #4a3f35;
  --ink-soft: #8a7a6a;
  --card: #ffffff;
  --bg1: #fff9ec;
  --bg2: #ffefd6;
  --radius: 20px;
  --shadow: 0 4px 14px rgba(255, 150, 80, 0.15);
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: linear-gradient(180deg, var(--bg1), var(--bg2));
  color: var(--ink);
  min-height: 100vh;
  padding-bottom: 92px; /* 给底部导航留位 */
}

/* ---------- 顶栏 ---------- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: linear-gradient(135deg, var(--coral), var(--orange));
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  box-shadow: 0 2px 12px rgba(255, 107, 107, 0.35);
}
.hdr-stars {
  background: rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  padding: 4px 14px;
  font-size: 16px;
}

/* ---------- 视图 ---------- */
main { max-width: 720px; margin: 0 auto; padding: 16px 14px 8px; }
.view { display: none; }
.view.active { display: block; animation: fadeUp 0.25s ease; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.page-title { font-size: 24px; font-weight: 800; margin: 6px 4px 4px; }
.page-sub { color: var(--ink-soft); margin: 0 4px 14px; font-size: 14px; }
.section-title { font-size: 18px; font-weight: 800; margin: 22px 4px 10px; }

/* ---------- 首页 ---------- */
.hero {
  background: linear-gradient(135deg, #ffd93d, #ff9f43);
  border-radius: 28px;
  padding: 28px 22px;
  text-align: center;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}
.hero-mascot { font-size: 72px; animation: bounce 2.2s ease-in-out infinite; }
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.hero h1 { margin: 10px 0 6px; font-size: 28px; color: #5b3a00; }
.hero p { margin: 0; color: #7a5a20; font-size: 15px; }
.daily-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  border: 2px dashed var(--orange);
}
.daily-card .daily-text { flex: 1; font-size: 15px; font-weight: 600; }
.mode-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.mode-card {
  background: var(--card);
  border: none;
  border-radius: var(--radius);
  padding: 20px 12px;
  box-shadow: var(--shadow);
  font-family: inherit;
  cursor: pointer;
  text-align: center;
  transition: transform 0.15s;
}
.mode-card:active { transform: scale(0.96); }
.mode-emoji { font-size: 44px; }
.mode-name { font-size: 17px; font-weight: 800; margin-top: 8px; }
.mode-desc { font-size: 12px; color: var(--ink-soft); margin-top: 4px; }

/* ---------- 通用卡片 / 按钮 ---------- */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 12px;
}
.btn {
  border: none;
  border-radius: 999px;
  padding: 12px 20px;
  font-size: 16px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.12s, opacity 0.12s;
  color: #fff;
}
.btn:active { transform: scale(0.95); }
.btn:disabled { opacity: 0.6; }
.btn-listen { background: var(--teal); box-shadow: 0 3px 0 var(--teal-dark); }
.btn-speak { background: var(--coral); box-shadow: 0 3px 0 var(--coral-dark); }
.btn-ghost {
  background: #fff;
  color: var(--ink);
  border: 2px solid #f0d9a8;
  box-shadow: none;
}
.btn-big { font-size: 20px; padding: 16px 44px; margin-top: 12px; }
.btn-row { display: flex; gap: 10px; margin-top: 10px; }
.btn-row .btn { flex: 1; }
.btn-row.center { justify-content: center; }
.btn-row.center .btn { flex: none; }
.back-btn { margin-bottom: 12px; }
.center { text-align: center; }

/* ---------- 分类标签 ---------- */
.tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 2px 12px;
  -webkit-overflow-scrolling: touch;
}
.chip {
  flex: none;
  border: none;
  background: #fff;
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 700;
  font-family: inherit;
  color: var(--ink);
  box-shadow: var(--shadow);
  cursor: pointer;
  white-space: nowrap;
}
.chip.active { background: var(--yellow); }

/* ---------- 单词卡片 ---------- */
#word-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.word-card { text-align: center; margin-bottom: 0; }
.word-emoji { font-size: 52px; }
.word-num {
  font-size: 52px;
  font-weight: 900;
  color: var(--orange);
}
.word-en { font-size: 22px; font-weight: 800; margin-top: 6px; }
.word-phon { color: var(--purple); font-size: 14px; margin-top: 2px; }
.word-zh { color: var(--ink-soft); font-size: 15px; margin: 4px 0 6px; }
.card-stars { min-height: 22px; font-size: 18px; color: var(--orange); }
.star-off { color: #e8dcc8; }

/* ---------- 句子卡片 ---------- */
.sent-en { font-size: 20px; font-weight: 800; line-height: 1.4; }
.sent-zh { color: var(--ink-soft); font-size: 14px; margin: 6px 0 4px; }

/* ---------- 对话 ---------- */
.dlg-item {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}
.dlg-emoji { font-size: 40px; }
.dlg-info { flex: 1; }
.dlg-title { font-size: 18px; font-weight: 800; }
.dlg-sub { font-size: 13px; color: var(--ink-soft); margin-top: 2px; }
.dlg-stars { color: var(--orange); font-size: 16px; }
.dlg-arrow { font-size: 28px; color: #d8c8a8; }
.bubbles { display: flex; flex-direction: column; gap: 10px; margin: 12px 0; }
.bubble {
  max-width: 85%;
  padding: 12px 14px;
  border-radius: 18px;
  box-shadow: var(--shadow);
  cursor: pointer;
}
.bubble.left { align-self: flex-start; background: #fff; border-bottom-left-radius: 6px; }
.bubble.right { align-self: flex-end; background: #e3f9f5; border-bottom-right-radius: 6px; }
.bubble.done { opacity: 0.75; cursor: default; }
.bubble-sp { font-size: 13px; font-weight: 800; color: var(--teal-dark); margin-bottom: 4px; }
.bubble-en { font-size: 17px; font-weight: 700; }
.bubble-zh { font-size: 13px; color: var(--ink-soft); margin-top: 2px; }
.rp-intro-title { font-size: 17px; font-weight: 800; }
.rp-intro-sub { font-size: 14px; color: var(--ink-soft); margin: 4px 0 6px; }
.rp-progress {
  text-align: center;
  font-weight: 800;
  color: var(--orange);
  margin: 4px 0 8px;
}
.rp-turn { text-align: center; }
.rp-turn-title { font-size: 17px; font-weight: 800; }
.rp-turn-en { font-size: 22px; font-weight: 800; color: var(--coral-dark); margin: 10px 0 4px; }
.rp-turn-zh { color: var(--ink-soft); }
.rp-done { text-align: center; padding: 30px 18px; }
.rp-done-emoji { font-size: 64px; }
.rp-done-title { font-size: 24px; font-weight: 800; margin: 8px 0; }
.rp-done-stars { font-size: 34px; color: var(--orange); margin-bottom: 8px; }

/* ---------- 挑战 ---------- */
.scene-card { text-align: center; }
.scene-emojis { font-size: 64px; letter-spacing: 6px; }
/* 挑战场景 SVG 插画：不依赖系统 emoji 字体 */
.scene-art { margin: 6px auto 2px; }
.scene-art svg { width: 120px; height: 120px; }
/* emoji 字体兜底：优先使用系统彩色 emoji 字体 */
.word-emoji, .dlg-emoji, .hero-mascot, .mode-emoji, .nav-emoji,
.stat-emoji, .badge-emoji, .scene-emojis {
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", "Android Emoji", sans-serif;
}
/* 录音中：呼吸灯效果 */
.heard.live { animation: pulse 1.4s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
.scene-title { font-size: 18px; font-weight: 800; margin-top: 8px; }
.scene-prompt { color: var(--ink-soft); font-size: 14px; margin: 4px 0 8px; }
.scene-hint {
  background: #fff8e1;
  border-radius: 12px;
  padding: 10px;
  font-size: 14px;
  margin-bottom: 8px;
  line-height: 1.6;
}
.kw-row { margin: 8px 0; font-size: 14px; }
.kw {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  margin: 2px;
  font-weight: 700;
}
.kw-hit { background: #d8f5e3; color: #1d8a4c; }
.kw-miss { background: #f3ede2; color: var(--ink-soft); }

/* ---------- 反馈 ---------- */
.feedback { margin-top: 8px; }
.feedback:empty { display: none; }
.feedback-msg {
  border-radius: 14px;
  padding: 10px 12px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}
.fb-great { background: #fff3c4; color: #8a6d00; }
.fb-good { background: #e3f9f5; color: #0f766e; }
.fb-ok { background: #f3ede2; color: var(--ink); }
.fb-retry { background: #ffe8e8; color: #b23b3b; }
.heard {
  font-size: 13px;
  color: var(--ink-soft);
  background: #faf6ee;
  border-radius: 10px;
  padding: 6px 10px;
  margin-bottom: 6px;
}

/* ---------- 成就 ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.stat-card { text-align: center; margin-bottom: 0; }
.stat-emoji { font-size: 36px; }
.stat-num { font-size: 30px; font-weight: 900; color: var(--coral-dark); }
.stat-label { font-size: 13px; color: var(--ink-soft); }
.badge-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
}
.badge-card { text-align: center; margin-bottom: 0; padding: 14px 8px; }
.badge-card.locked { opacity: 0.55; filter: grayscale(0.6); }
.badge-card.earned { border: 2px solid var(--yellow); }
.badge-emoji { font-size: 38px; }
.badge-name { font-size: 14px; font-weight: 800; margin-top: 6px; }
.badge-desc { font-size: 11px; color: var(--ink-soft); margin-top: 2px; }

/* ---------- 底部导航 ---------- */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  background: #fff;
  box-shadow: 0 -2px 16px rgba(255, 150, 80, 0.18);
  padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
}
.nav-item {
  flex: 1;
  border: none;
  background: none;
  font-family: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 0;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
}
.nav-item .nav-emoji { font-size: 24px; }
.nav-item.active { color: var(--coral-dark); }

/* ---------- 提示条 / Toast / 撒花 ---------- */
.notice {
  background: #fff3c4;
  border-radius: 14px;
  padding: 10px 14px;
  font-size: 13px;
  margin-bottom: 12px;
  color: #8a6d00;
}
#toast {
  position: fixed;
  left: 50%;
  bottom: 100px;
  transform: translateX(-50%) translateY(20px);
  background: rgba(74, 63, 53, 0.92);
  color: #fff;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 200;
  max-width: 90vw;
  text-align: center;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.confetti-piece {
  position: fixed;
  top: -40px;
  z-index: 999;
  pointer-events: none;
  animation-name: confetti-fall;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}
@keyframes confetti-fall {
  to { transform: translateY(112vh) rotate(420deg); }
}

/* ---------- 平板/桌面微调 ---------- */
@media (min-width: 600px) {
  #word-grid { grid-template-columns: 1fr 1fr 1fr; }
  .mode-grid { grid-template-columns: 1fr 1fr 1fr; }
}