/* 单词记忆教练｜全局样式
 * 设计原则（来自 01_角色定义）：
 * - 信息密度低，初一学生一眼能看
 * - 大按钮、低压力
 * - 家长配置区与学生区视觉分离
 */

:root {
  --c-bg: #fffaf2;
  --c-card: #ffffff;
  --c-primary: #ff8c42;
  --c-primary-dark: #e6732b;
  --c-success: #4caf50;
  --c-error: #e74c3c;
  --c-warn: #f39c12;
  --c-text: #2c3e50;
  --c-text-soft: #7f8c8d;
  --c-border: #f0e6d8;
  --c-shadow: 0 4px 16px rgba(255, 140, 66, 0.08);
  --radius: 16px;
  --radius-sm: 10px;
  --font-zh: "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-en: "Comic Sans MS", "Arial Rounded MT Bold", system-ui;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  font-family: var(--font-zh);
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

a { color: var(--c-primary-dark); text-decoration: none; }

/* ============ 通用布局 ============ */
.app {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px;
  min-height: 100vh;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0 16px;
  border-bottom: 2px dashed var(--c-border);
  margin-bottom: 20px;
}

.app-title { font-size: 20px; font-weight: 700; }
.app-profile {
  font-size: 13px;
  color: var(--c-text-soft);
  background: var(--c-card);
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--c-border);
  cursor: pointer;
}

/* ============ 卡片 ============ */
.card {
  background: var(--c-card);
  border-radius: var(--radius);
  box-shadow: var(--c-shadow);
  padding: 20px;
  margin-bottom: 16px;
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--c-text);
}

.card-subtitle {
  font-size: 13px;
  color: var(--c-text-soft);
  margin-bottom: 16px;
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 20px;
  border-radius: 24px;
  font-size: 15px;
  font-weight: 600;
  background: var(--c-primary);
  color: white;
  transition: transform 0.1s, background 0.2s;
  min-height: 44px;
}

.btn:hover { background: var(--c-primary-dark); }
.btn:active { transform: scale(0.97); }
.btn:disabled { background: #ccc; cursor: not-allowed; }

.btn-ghost {
  background: transparent;
  color: var(--c-primary-dark);
  border: 2px solid var(--c-primary);
}
.btn-ghost:hover { background: rgba(255, 140, 66, 0.08); }

.btn-block { width: 100%; }
.btn-sm { padding: 8px 14px; font-size: 13px; min-height: 32px; }

/* ============ 单词大展示 ============ */
.word-hero {
  text-align: center;
  padding: 24px 0;
}
.word-hero .word {
  font-family: var(--font-en);
  font-size: 56px;
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: 2px;
}
.word-hero .ipa {
  font-size: 18px;
  color: var(--c-text-soft);
  margin-top: 8px;
  font-family: var(--font-en);
}
.word-hero .meaning {
  font-size: 16px;
  color: var(--c-text);
  margin-top: 12px;
}

/* ============ 步骤条 ============ */
.steps {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
  overflow-x: auto;
}
.step {
  flex-shrink: 0;
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 12px;
  background: #f5f0e8;
  color: var(--c-text-soft);
}
.step.active { background: var(--c-primary); color: white; }
.step.done { background: var(--c-success); color: white; }

/* ============ 听写专用 ============ */
.dictation-stage {
  text-align: center;
  padding: 60px 20px;
  background: linear-gradient(180deg, #fff5e8 0%, #fffaf2 100%);
  border-radius: var(--radius);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 24px;
}
.dictation-counter {
  font-size: 14px;
  color: var(--c-text-soft);
}
.dictation-controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.dictation-tip {
  font-size: 14px;
  color: var(--c-text-soft);
  max-width: 320px;
  line-height: 1.6;
}
.dictation-input {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 16px;
}
.dictation-input input {
  font-family: var(--font-en);
  font-size: 24px;
  letter-spacing: 4px;
  text-align: center;
  padding: 12px 16px;
  border: 2px solid var(--c-border);
  border-radius: var(--radius-sm);
  width: 220px;
  outline: none;
  background: white;
}
.dictation-input input:focus { border-color: var(--c-primary); }

.feedback {
  text-align: center;
  padding: 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  margin: 12px 0;
}
.feedback.ok { background: #e8f5e9; color: #2e7d32; }
.feedback.err { background: #fdecea; color: #c62828; }

/* ============ 列表 ============ */
.word-list { list-style: none; }
.word-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  border-bottom: 1px solid var(--c-border);
}
.word-list li:last-child { border-bottom: none; }
.word-list .word-text { font-family: var(--font-en); font-size: 18px; font-weight: 600; }
.word-list .word-meta { font-size: 12px; color: var(--c-text-soft); }
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  background: #f5f0e8;
  color: var(--c-text-soft);
}
.badge.master { background: #e8f5e9; color: #2e7d32; }
.badge.dictation-err { background: #fff3e0; color: #e65100; }
.badge.review { background: #e3f2fd; color: #1565c0; }

/* ============ 弹窗 ============ */
.modal-mask {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.4);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}
.modal-mask.show { display: flex; }
.modal {
  background: var(--c-card);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 480px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
}
.modal h3 { margin-bottom: 12px; }
.modal .field { margin-bottom: 14px; }
.modal label { display: block; font-size: 13px; color: var(--c-text-soft); margin-bottom: 4px; }
.modal input, .modal select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  background: white;
}
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }

/* ============ 错词卡片 ============ */
.wrong-word {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #fff8f3;
  border-left: 4px solid var(--c-error);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}
.wrong-word .word-text { font-family: var(--font-en); font-size: 18px; font-weight: 600; }

/* ============ 提示条 ============ */
.notice {
  background: #fff8e1;
  border-left: 4px solid var(--c-warn);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: #6d4c00;
  margin-bottom: 16px;
  line-height: 1.6;
}

/* ============ 段落/特位展示 ============ */
.syllables {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 16px 0;
}
.syllable {
  background: #f5f0e8;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.15s;
}
.syllable:hover { border-color: var(--c-primary); background: #ffeed8; }
.syllable.playing { background: var(--c-primary); color: white; }

.phoneme-row {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 8px 0;
}
.phoneme {
  background: #f5f0e8;
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  text-align: center;
  min-width: 60px;
}
.phoneme .letters { font-family: var(--font-en); font-size: 18px; font-weight: 700; }
.phoneme .sound { font-size: 12px; color: var(--c-text-soft); font-family: var(--font-en); }

.special-tip {
  background: #fff3e0;
  border-left: 3px solid var(--c-warn);
  padding: 10px 12px;
  margin: 8px 0;
  font-size: 13px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.hidden-answer {
  background: #eee;
  color: transparent;
  user-select: none;
  border-radius: 4px;
  padding: 2px 8px;
}
.hidden-answer.revealed { background: transparent; color: var(--c-text); user-select: text; }

/* ============ 答题区 ============ */
.recall-input {
  font-family: var(--font-en);
  font-size: 22px;
  letter-spacing: 3px;
  text-align: center;
  padding: 10px 16px;
  border: 2px solid var(--c-border);
  border-radius: var(--radius-sm);
  width: 100%;
  outline: none;
  background: white;
  margin: 12px 0;
}
.recall-input:focus { border-color: var(--c-primary); }

/* ============ 重复次数角标（D005） ============ */
.badge-times {
  display: inline-block;
  background: rgba(255, 255, 255, 0.25);
  color: white;
  padding: 2px 6px;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 700;
  margin-left: 4px;
}
.btn-ghost .badge-times {
  background: rgba(255, 140, 66, 0.15);
  color: var(--c-primary-dark);
}

/* ============ Stepper 控件（D005 家长配置） ============ */
.stepper-field {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--c-border);
}
.stepper-field:last-of-type { border-bottom: none; }
.stepper-field label {
  margin-bottom: 0 !important;
  flex: 1;
}
.stepper {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #f5f0e8;
  border-radius: 20px;
  padding: 2px;
}
.stepper-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: white;
  color: var(--c-primary-dark);
  font-size: 16px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--c-border);
  cursor: pointer;
  transition: all 0.15s;
}
.stepper-btn:hover { background: var(--c-primary); color: white; }
.stepper-btn:active { transform: scale(0.92); }
.stepper-val {
  min-width: 28px;
  text-align: center;
  font-weight: 700;
  font-size: 16px;
  color: var(--c-text);
}
.stepper-hint {
  font-size: 12px;
  color: var(--c-text-soft);
  margin-left: 4px;
}

/* ============ 单元切换（D007） ============ */
.unit-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-top: 8px;
}
.unit-chip {
  padding: 10px 4px;
  border-radius: 12px;
  background: var(--c-bg-soft, #f5f0e8);
  color: var(--c-text, #5b3a29);
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--c-border, #e6dac8);
  cursor: pointer;
  transition: all 0.15s;
}
.unit-chip:hover {
  background: var(--c-primary-soft, #f9d56e);
  transform: translateY(-1px);
}
.unit-chip.active {
  background: var(--c-primary, #f4a261);
  color: white;
  border-color: var(--c-primary-dark, #e76f51);
  box-shadow: 0 2px 6px rgba(244, 162, 97, 0.4);
}

/* ============ 重点/了解角标（D008） ============ */
.importance-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px 8px;
}
.importance-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}
.importance-badge.key {
  background: #ffe5e5;
  color: #c92a2a;
  border: 1px solid #ffa8a8;
}
.importance-badge.normal {
  background: #f1f3f5;
  color: #868e96;
  border: 1px solid #dee2e6;
}
.importance-tip {
  font-size: 12px;
  color: var(--c-text-soft);
}

/* ============ 复习词角标（D010） ============ */
.review-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 700;
  background: #fff4e6;
  color: #d97706;
  border: 1px solid #ffd8a8;
  white-space: nowrap;
}

/* ============ D011 听写拍照上传 + 批改 ============ */
.dictation-photo-preview {
  min-height: 60px;
  border: 2px dashed #d4c5a9;
  border-radius: 8px;
  padding: 8px;
  text-align: center;
  background: #faf6ee;
}
.dictation-photo-thumb {
  max-width: 100%;
  max-height: 300px;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
.dictation-photo-full {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}
.grade-grid {
  display: grid;
  gap: 12px;
  margin: 12px 0;
}
.grade-item {
  background: #faf6ee;
  border: 1px solid var(--c-border, #e5dcc8);
  border-radius: 8px;
  padding: 12px;
}
.grade-word {
  font-size: 20px;
  font-weight: 700;
  color: var(--c-primary-dark, #6b4423);
  margin-bottom: 4px;
}
.grade-meaning {
  font-size: 13px;
  color: var(--c-text-soft, #8a7e6b);
  margin-bottom: 8px;
}
.grade-actions {
  display: flex;
  gap: 8px;
}
.btn-grade {
  flex: 1;
  padding: 10px;
  border: 2px solid transparent;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  background: white;
  transition: all 0.2s;
}
.btn-grade.correct { color: #2f9e44; border-color: #d3f9d8; }
.btn-grade.correct.selected,
.btn-grade.correct:hover { background: #2f9e44; color: white; border-color: #2f9e44; }
.btn-grade.wrong { color: #c92a2a; border-color: #ffe3e3; }
.btn-grade.wrong.selected,
.btn-grade.wrong:hover { background: #c92a2a; color: white; border-color: #c92a2a; }

/* ============ Toggle 控件（D005） ============ */
.toggle-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  user-select: none;
}
.toggle input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--c-primary);
  cursor: pointer;
}