/* 小流英语雅思单词练习系统 - Styles
 * 统一UI设计：参考keepabc-website父站设计系统
 * 品牌蓝：#28a7e1 (浅蓝) / #1e8bc3 (深蓝) / #d6f0fa (浅蓝背景)
 */

/* ========== 基础变量 ========== */
:root {
  --brand: #28a7e1;
  --brand-hover: #1e8bc3;
  --brand-soft: #d6f0fa;
  --brand-light: #eaf8ff;

  --surface: #f8fafc;
  --surface-raised: #ffffff;
  --surface-hover: #f1f5f9;

  --border: #e2e8f0;
  --border-light: #f1f5f9;

  --text: #1e293b;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  --danger: #ef4444;
  --danger-soft: #fee2e2;
  --success: #10b981;
  --success-soft: #d1fae5;
  --warning: #f59e0b;
  --warning-soft: #fef3c7;
  --info: #3b82f6;

  --shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.1);

  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 12px;

  --font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Consolas", "Monaco", "Courier New", monospace;

  --transition: all 0.2s ease;
}

/* ========== 重置与基础 ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-family);
  background: var(--surface);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

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

input, select, textarea {
  font-family: inherit;
  outline: none;
}

/* ========== 按钮系统 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--brand);
  color: white;
}
.btn-primary:hover { background: var(--brand-hover); transform: translateY(-1px); }
.btn-primary:active { transform: scale(0.98); }

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--border); }

.btn-danger {
  background: var(--danger);
  color: white;
}
.btn-danger:hover { filter: brightness(0.92); }

.btn-success {
  background: var(--success);
  color: white;
}
.btn-success:hover { filter: brightness(0.92); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  background: var(--brand-soft);
  border-color: var(--brand);
  color: var(--brand);
}

.btn-sm { padding: 7px 14px; font-size: 13px; }
.btn-large { padding: 14px 32px; font-size: 16px; }

.btn-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--surface-hover);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  border: 1px solid var(--border);
}
.btn-close:hover {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
}

/* ========== 顶部导航栏 ========== */
.top-bar {
  height: 64px;
  background: var(--surface-raised);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  flex-shrink: 0;
  border-bottom: 2px solid var(--brand);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

.top-bar .logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.logo-area img {
  height: 40px;
  width: auto;
  border-radius: 6px;
  object-fit: contain;
}

.top-bar .nav-tabs {
  display: flex;
  gap: 4px;
}

.nav-tab {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-muted);
  border: none;
  background: transparent;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-tab:hover {
  background: var(--brand-soft);
  color: var(--brand);
}

.nav-tab.active {
  background: var(--brand);
  color: white;
  font-weight: 600;
}

.top-bar .user-area {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text);
}

.user-area > * {
  align-self: center;
  margin: 0;
}

.user-area .level-badge {
  background: var(--brand-soft);
  color: var(--brand);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  height: 32px;
  line-height: 1;
  vertical-align: middle;
  border: none;
  margin: 0;
  gap: 0;
}
.user-area .logout-btn {
  background: var(--brand-soft);
  border: none;
  color: var(--brand);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
}

.user-area .logout-btn:hover { background: var(--brand); color: white; }


/* ========== 主内容区 ========== */
.main-container {
  padding-top: 80px;
  padding-bottom: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ========== 页面切换 ========== */
.page {
  display: none;
  animation: fadeIn 0.3s ease;
}

.page.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== 面板卡片 ========== */
.panel-card {
  background: var(--surface-raised);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.panel-header {
  padding: 14px 18px;
  background: var(--brand);
  color: white;
  font-weight: 600;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.panel-body {
  padding: 16px;
  flex: 1;
  overflow-y: auto;
}

/* ========== 首页 / 仪表盘（大气一屏版）========== */
.dashboard {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
  padding-top: 8px;
  padding-bottom: 16px;
}

/* 顶部数据栏 - 简洁横排 */
.hero-stats-bar {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding: 0;
}

.hero-stat {
  display: flex;
  flex-direction: row;
  align-items: baseline;
  gap: 8px;
  padding: 0;
  background: none;
  border: none;
  box-shadow: none;
  border-radius: 0;
  min-width: auto;
}

.hero-stat-num {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--brand);
  line-height: 1; vertical-align: middle;
  letter-spacing: -2px;
}

.hero-stat-label {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Hero Card - 玻璃拟态 + 渐变 + 光效 */
.hero-card {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  cursor: pointer;
  background: linear-gradient(145deg, #eef6fc 0%, #e4f1f9 40%, #dcecf7 100%);
  border: 1px solid rgba(40,167,225,0.18);
  box-shadow: 0 8px 32px rgba(40,167,225,0.1), inset 0 1px 0 rgba(255,255,255,0.5);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  padding: 40px 36px 32px;
  text-align: center;
}
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  cursor: pointer;
  background: linear-gradient(135deg, rgba(40,167,225,0.12) 0%, rgba(59,130,246,0.06) 50%, rgba(16,185,129,0.06) 100%);
  border: 1px solid rgba(40,167,225,0.22);
  box-shadow: 0 8px 32px rgba(40,167,225,0.12), inset 0 1px 0 rgba(255,255,255,0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  padding: 40px 36px 32px;
  text-align: center;
}

.hero-card:hover {
  transform: translateY(-2px) scale(1.005);
  box-shadow: 0 12px 40px rgba(40,167,225,0.2), inset 0 1px 0 rgba(255,255,255,0.4);
}

.hero-card-glow {
  position: absolute;
  top: -50px;
  right: -50px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(40,167,225,0.3) 0%, transparent 70%);
  pointer-events: none;
  animation: floatGlow 4s ease-in-out infinite;
}

@keyframes floatGlow {
  0%, 100% { transform: translate(0,0); opacity: 0.5; }
  50% { transform: translate(-10px, 10px); opacity: 1; }
}

.hero-card-inner {
  position: relative;
  z-index: 1;
}

.hero-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--brand), var(--brand-hover));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  box-shadow: 0 4px 18px rgba(40,167,225,0.35);
}

.hero-icon i {
  font-size: 1.5rem;
  color: white;
}

.hero-card h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
  letter-spacing: -1px;
}

.hero-card p {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.btn-hero-play {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 44px;
  font-size: 1.1rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--brand) 0%, #1e8bc3 100%);
  color: white;
  border-radius: 50px;
  box-shadow: 0 6px 22px rgba(40,167,225,0.4), 0 0 0 3px rgba(40,167,225,0.15);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 10px;
}

.btn-hero-play:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(40,167,225,0.5), 0 0 0 3px rgba(40,167,225,0.2);
}

.btn-hero-play:active {
  transform: scale(0.97);
}

.hero-tip {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-tip i {
  color: var(--warning);
  margin-right: 4px;
  font-size: 0.8rem;
}

.hero-tip strong {
  color: var(--brand);
  font-weight: 600;
}

/* Mode Cards - 2x2 紧凑网格 + 光效 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.mode-card {
  position: relative;
  background: var(--surface-raised);
  border-radius: 18px;
  padding: 18px 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 14px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}

.mode-card:hover {
  transform: translateY(-3px);
  border-color: rgba(40,167,225,0.3);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08), 0 0 0 1px rgba(40,167,225,0.15);
}

.mode-card:hover .mode-card-glow {
  opacity: 0.5;
}

.mode-card-glow {
  position: absolute;
  top: -20px; right: -20px;
  width: 80px; height: 80px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.mode-card-icon {
  width: 48px; height: 48px;
  min-width: 48px;
  border-radius: 12px;
  background: rgba(0,0,0,0.03);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.mode-card:hover .mode-card-icon {
  transform: scale(1.1);
}

.mode-card-icon i {
  font-size: 1.3rem;
}

.mode-card-text {
  flex: 1;
  min-width: 0;
}

.mode-card-text h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.mode-card-text p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.3;
}

.mode-card-tag {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 10px;
  flex-shrink: 0;
}

.tag-recommend { background: rgba(59,130,246,0.12); color: #3b82f6; }
.tag-speed { background: rgba(245,158,11,0.12); color: #f59e0b; }
.tag-review { background: rgba(239,68,68,0.12); color: #ef4444; }
.tag-mixed { background: rgba(16,185,129,0.12); color: #10b981; }

/* Recent Activity */
.activity-list.compact {
  background: var(--surface-raised);
  border-radius: 16px;
  padding: 12px 18px;
  border: 1px solid var(--border);
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}

.activity-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.2s ease;
}

.activity-item:hover {
  background: var(--surface-hover);
  margin: 0 -8px;
  padding: 10px 8px;
  border-radius: 10px;
}

.activity-item:last-child {
  border-bottom: none;
}

.activity-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.activity-info .mode {
  font-weight: 600;
  color: var(--text);
  font-size: 0.9rem;
}

.activity-info .time {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.activity-score {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--brand);
}

.empty-state.mini {
  padding: 8px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.empty-state.mini i {
  font-size: 1.1rem;
  color: var(--brand);
  display: inline;
  margin: 0;
}

.empty-state.mini a {
  color: var(--brand);
  font-weight: 600;
  cursor: pointer;
}

.empty-state.mini a:hover {
  text-decoration: underline;
}

/* ========== 练习页面 ========== */
.practice-container {
  max-width: 800px;
  margin: 0 auto;
  background: var(--surface-raised);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.practice-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.practice-info {
  display: flex;
  gap: 16px;
  align-items: center;
}

.mode-badge {
  background: var(--brand);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.progress {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.practice-stats {
  display: flex;
  gap: 16px;
}

.stat {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.stat i {
  color: var(--warning);
}

.practice-body {
  padding: 48px 32px;
  text-align: center;
}

.audio-section {
  margin-bottom: 40px;
}

.audio-btn {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--surface);
  border: 3px solid var(--brand);
  color: var(--brand);
  font-size: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 0 auto 12px;
  transition: var(--transition);
  cursor: pointer;
}

.audio-btn:hover {
  background: var(--brand);
  color: white;
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(40, 167, 225, 0.4);
}

.audio-btn:active { transform: scale(0.95); }

.audio-btn.playing { animation: pulse 1s infinite; }

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(40, 167, 225, 0.4); }
  50% { box-shadow: 0 0 0 20px rgba(40, 167, 225, 0); }
}

.audio-btn span {
  font-size: 0.75rem;
  font-weight: 500;
}

.audio-hint {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.input-section {
  max-width: 400px;
  margin: 0 auto;
}

.word-input {
  width: 100%;
  padding: 16px 20px;
  font-size: 1.4rem;
  text-align: center;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: var(--transition);
  margin-bottom: 16px;
  font-family: var(--font-mono);
  letter-spacing: 1px;
}

.word-input:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}

.word-input.correct {
  border-color: var(--success);
  background: var(--success-soft);
}

.word-input.wrong {
  border-color: var(--danger);
  background: var(--danger-soft);
}

.input-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.hint-bar {
  margin-top: 20px;
  font-size: 0.8rem;
  color: var(--text-light);
}

/* ========== 反馈区域 ========== */
.feedback-section {
  display: none;
  padding: 24px 32px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.feedback-section.show {
  display: block;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.feedback-content {
  text-align: center;
}

.feedback-correct .feedback-icon {
  color: var(--success);
  font-size: 3rem;
  margin-bottom: 12px;
}

.feedback-wrong .feedback-icon {
  color: var(--danger);
  font-size: 3rem;
  margin-bottom: 12px;
}

.feedback-word {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  font-family: var(--font-mono);
}

.feedback-phonetic {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 8px;
}

.feedback-meaning {
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 6px;
}

.feedback-example {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.9rem;
  margin-bottom: 12px;
  padding: 0 20px;
}

.feedback-error {
  background: var(--danger-soft);
  border: 1px solid var(--danger);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 16px;
  display: inline-block;
}

.feedback-error .user-input {
  color: var(--danger);
  text-decoration: line-through;
  margin-right: 12px;
}

.feedback-error .correct-spelling {
  color: var(--success);
  font-weight: 600;
}

.feedback-error .error-type {
  display: block;
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.wordbank-notice {
  color: var(--warning);
  font-size: 0.85rem;
  margin-bottom: 12px;
}

.feedback-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 16px;
}

/* ========== 练习结果页面 ========== */
.result-container {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  padding: 40px 24px;
}

.result-header {
  margin-bottom: 32px;
}

.result-header h1 {
  font-size: 2rem;
  margin-bottom: 16px;
  color: var(--text);
}

.level-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.stars {
  font-size: 2rem;
}

.title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--brand);
}

.total-score {
  font-size: 4rem;
  font-weight: 800;
  color: var(--brand);
  line-height: 1; vertical-align: middle;
}

.score-label {
  color: var(--text-muted);
  font-size: 1rem;
  margin-top: 4px;
}

.result-details {
  background: var(--surface-raised);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.detail-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.detail-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.detail-card i {
  font-size: 1.5rem;
}

.detail-card.accuracy i { color: var(--success); }
.detail-card.speed i { color: var(--warning); }
.detail-card.streak i { color: var(--danger); }

.detail-card .value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
}

.detail-card .label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.result-summary {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  color: var(--text-muted);
}

.result-summary strong {
  color: var(--text);
}

.new-badges {
  margin-bottom: 24px;
}

.badge-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--warning-soft);
  border: 1px solid var(--warning);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  margin: 4px;
  animation: badgePop 0.5s ease;
}

@keyframes badgePop {
  0% { transform: scale(0); }
  70% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

.result-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========== 错词簿页面 ========== */
.wordbank-container {
  max-width: 900px;
  margin: 0 auto;
}

.wordbank-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.wordbank-header h1 {
  font-size: 1.6rem;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.wordbank-stats {
  display: flex;
  gap: 12px;
}

.wordbank-stats .badge {
  background: var(--surface-raised);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.wordbank-stats .badge strong {
  color: var(--brand);
}

.wordbank-filters {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  align-items: center;
}

.wordbank-filters select {
  padding: 8px 16px;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9rem;
  cursor: pointer;
}

.wordbank-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.wordbank-item {
  background: var(--surface-raised);
  border-radius: var(--radius);
  padding: 16px 20px;
  border: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  transition: var(--transition);
  box-shadow: var(--shadow);
  gap: 16px;
}

.wordbank-item.mastered {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.05);
}

.wordbank-item.mastered .word {
  color: var(--success);
}

.wordbank-item.mastered .error-count {
  background: var(--success-soft);
  color: var(--success);
}

.wordbank-item:hover {
  border-color: var(--brand);
  transform: translateX(4px);
  box-shadow: var(--shadow-hover);
}

.wordbank-item .word-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  min-width: 0;
}

.wordbank-item .word {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  font-family: var(--font-mono);
}

.wordbank-item .phonetic {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.wordbank-item .meaning {
  color: var(--text-light);
  font-size: 0.85rem;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.wordbank-item .word-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  flex-shrink: 0;
  margin-top: 2px;
}

.wordbank-item .error-count {
  background: var(--danger-soft);
  color: var(--danger);
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 500;
}

.wordbank-item .error-types {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.wordbank-item .word-actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.wordbank-item .word-actions button {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  background: var(--surface);
  color: var(--text-muted);
  transition: var(--transition);
  border: 1px solid var(--border);
  white-space: nowrap;
}

.wordbank-item .word-actions button.btn-mastered.active {
  background: var(--success);
  color: white;
  border-color: var(--success);
}

.wordbank-item .word-actions button.btn-mastered.active:hover {
  background: var(--success);
  color: white;
  border-color: var(--success);
  opacity: 0.9;
}

.wordbank-item .word-actions button:hover {
  background: var(--brand);
  color: white;
  border-color: var(--brand);
}

.wordbank-item .word-actions .btn-remove:hover {
  background: var(--danger);
  border-color: var(--danger);
}

/* ========== 学习档案页面 ========== */
.profile-container {
  max-width: 900px;
  margin: 0 auto;
}

.profile-header {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--surface-raised);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.profile-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: white;
  box-shadow: var(--shadow);
}

.profile-info h2 {
  font-size: 1.4rem;
  margin-bottom: 8px;
  color: var(--text);
}

.profile-level {
  display: flex;
  align-items: center;
  gap: 12px;
}

.profile-level .level-badge {
  background: var(--brand-soft);
  color: var(--brand);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
}

.level-progress {
  width: 150px;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.profile-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface-raised);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.stat-card:hover {
  border-color: var(--brand);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.stat-card i {
  font-size: 1.5rem;
  color: var(--brand);
  margin-bottom: 8px;
}

.stat-card .value {
  font-size: 1.6rem;
  font-weight: 700;
  display: block;
  margin-bottom: 4px;
  color: var(--text);
}

.stat-card .label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.profile-charts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.chart-card {
  background: var(--surface-raised);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.chart-card h3 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  color: var(--text-muted);
}

.chart-card canvas {
  max-height: 250px;
}

.badges-section {
  background: var(--surface-raised);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.badges-section h3 {
  font-size: 1.1rem;
  margin-bottom: 20px;
  color: var(--text);
}

.badges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 16px;
}

.badge-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 12px 8px;
  text-align: center;
  transition: var(--transition);
  cursor: default;
}

.badge-card .badge-name {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text);
}

.badge-card .badge-desc {
  font-size: 0.65rem;
  color: var(--text-muted);
}

.badge-card:not(.unlocked) .badge-name {
  color: var(--text-light);
}

.badge-card:not(.unlocked) .badge-desc {
  color: var(--text-light);
}

.badge-card:not(.unlocked) .badge-circle::after {
  background: var(--surface-raised);
  border-color: var(--border);
}

.badge-circle {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  position: relative;
  transition: var(--transition);
  border: 3px solid transparent;
  box-shadow: inset 0 2px 6px rgba(255,255,255,0.3), inset 0 -2px 6px rgba(0,0,0,0.2), 0 3px 8px rgba(0,0,0,0.15);
}

.badge-card:not(.unlocked) .badge-circle {
  background: linear-gradient(135deg, #d1d5db 0%, #9ca3af 50%, #6b7280 100%);
  filter: grayscale(100%) opacity(0.5);
  border-color: #9ca3af;
}

.badge-card:not(.unlocked) .badge-circle::after {
  content: "🔒";
  position: absolute;
  font-size: 1.2rem;
  bottom: -4px;
  right: -4px;
  background: var(--surface-raised);
  border-radius: 50%;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--border);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.badge-card.unlocked .badge-circle {
  border-color: rgba(255,255,255,0.5);
  box-shadow: inset 0 2px 8px rgba(255,255,255,0.4), inset 0 -2px 8px rgba(0,0,0,0.2), 0 4px 12px rgba(0,0,0,0.15), 0 0 0 2px rgba(255,255,255,0.3);
}

.badge-card.unlocked .badge-circle::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 12px;
  width: 20px;
  height: 12px;
  background: rgba(255,255,255,0.4);
  border-radius: 50%;
  transform: rotate(-30deg);
  filter: blur(3px);
}

.badge-card[data-badge="perfect_round"].unlocked .badge-circle {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 50%, #d97706 100%);
}
.badge-card[data-badge="speed_demon"].unlocked .badge-circle {
  background: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 50%, #0284c7 100%);
}
.badge-card[data-badge="streak_king"].unlocked .badge-circle {
  background: linear-gradient(135deg, #f87171 0%, #ef4444 50%, #dc2626 100%);
}
.badge-card[data-badge="wordbank_cleared"].unlocked .badge-circle {
  background: linear-gradient(135deg, #34d399 0%, #10b981 50%, #059669 100%);
}
.badge-card[data-badge="week_streak"].unlocked .badge-circle {
  background: linear-gradient(135deg, #a78bfa 0%, #8b5cf6 50%, #7c3aed 100%);
}
.badge-card[data-badge="thousand_words"].unlocked .badge-circle {
  background: linear-gradient(135deg, #f472b6 0%, #ec4899 50%, #db2777 100%);
}

.badge-card.unlocked:hover .badge-circle {
  transform: scale(1.12) translateY(-4px);
  box-shadow: inset 0 2px 8px rgba(255,255,255,0.5), inset 0 -2px 8px rgba(0,0,0,0.2), 0 8px 24px rgba(0,0,0,0.2), 0 0 0 3px rgba(255,255,255,0.4);
}

.badge-card .badge-icon {
  font-size: 1.8rem;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.2));
}

.badge-card .badge-name {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.badge-card .badge-desc {
  font-size: 0.65rem;
  color: var(--text-muted);
  line-height: 1.3;
}

.badge-card:not(.unlocked) .badge-name {
  color: var(--text-light);
}

.badge-card:not(.unlocked) .badge-desc {
  color: var(--text-light);
}

/* ========== 设置页面 ========== */
.settings-container {
  max-width: 600px;
  margin: 0 auto;
}

.settings-container h1 {
  font-size: 1.6rem;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.settings-group {
  background: var(--surface-raised);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.settings-group h3 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.setting-item:last-child {
  border-bottom: none;
}

.setting-item label {
  font-size: 0.95rem;
  color: var(--text);
}

.setting-item select {
  padding: 8px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9rem;
  min-width: 180px;
  cursor: pointer;
  appearance: auto;
}

.setting-item select:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}

.radio-group {
  display: flex;
  gap: 16px;
}

.radio-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text);
}

.radio-group input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--brand);
}

/* Toggle Switch */
.toggle {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 26px;
  cursor: pointer;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--border);
  border-radius: 26px;
  transition: var(--transition);
}

.toggle-slider::before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background: white;
  border-radius: 50%;
  transition: var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.toggle input:checked + .toggle-slider {
  background: var(--brand);
}

.toggle input:checked + .toggle-slider::before {
  transform: translateX(24px);
}

.setting-item.danger {
  border-top: 1px solid var(--danger);
  margin-top: 8px;
}

/* ========== Toast 提示 ========== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--surface-raised);
  border: 1px solid var(--border);
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
  color: var(--text);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast.success { border-color: var(--success); color: var(--success); background: var(--success-soft); }
.toast.error { border-color: var(--danger); color: var(--danger); background: var(--danger-soft); }
.toast.warning { border-color: var(--warning); color: var(--warning); background: var(--warning-soft); }

/* ========== 暂停遮罩 ========== */
.pause-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(248, 250, 252, 0.95);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  border-radius: var(--radius);
}

.pause-overlay.show {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.pause-content {
  text-align: center;
  padding: 40px;
}

.pause-icon {
  font-size: 4rem;
  margin-bottom: 16px;
  opacity: 0.8;
}

.pause-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.pause-desc {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.practice-container {
  position: relative;
}

/* ========== 响应式设计 ========== */

@media (max-width: 768px) {
  .top-bar {
    padding: 0 12px;
  }

  .top-bar .nav-tabs {
    gap: 2px;
  }

  .nav-tab {
    padding: 6px 10px;
    font-size: 0.85rem;
  }

  .nav-tab span {
    display: none;
  }

  .user-area .level-badge {
    display: none;
  }

  .main-container {
    padding-left: 12px;
    padding-right: 12px;
  }

  .welcome-card {
    padding: 24px 16px;
  }

  .welcome-card h1 {
    font-size: 1.5rem;
  }

  .quick-stats {
    gap: 20px;
  }

  .stat-number {
    font-size: 1.6rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .practice-header {
    padding: 12px 16px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .practice-body {
    padding: 32px 16px;
  }

  .audio-btn {
    width: 100px;
    height: 100px;
    font-size: 2rem;
  }

  .word-input {
    font-size: 1.2rem;
  }

  .detail-cards {
    grid-template-columns: 1fr;
  }

  .profile-header {
    flex-direction: column;
    text-align: center;
  }

  .profile-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .profile-charts {
    grid-template-columns: 1fr;
  }

  .wordbank-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .wordbank-filters {
    flex-direction: column;
  }

  .wordbank-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .wordbank-item .word-meta {
    align-items: flex-start;
  }

  .result-actions {
    flex-direction: column;
  }

  .result-actions .btn {
    width: 100%;
  }

  .top-bar .logo-area span {
    display: none;
  }
}

/* ========== 动画 ========== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeInUp 0.4s ease forwards;
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--surface);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--brand);
}

/* ========== 练习设置页面 ========== */
.setup-container {
  max-width: 600px;
  margin: 0 auto;
  padding: 24px;
}

.setup-container h1 {
  font-size: 1.6rem;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.setup-card {
  background: var(--surface-raised);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.setup-card h3 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

.wordbank-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.wordbank-option {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.wordbank-option:hover {
  border-color: var(--brand);
  background: var(--brand-soft);
}

.wordbank-option.selected {
  border-color: var(--brand);
  background: var(--brand-soft);
  box-shadow: 0 0 0 3px var(--brand-soft);
}

.wordbank-option i {
  font-size: 1.8rem;
  color: var(--brand);
  margin-bottom: 8px;
  display: block;
}

.wordbank-option span {
  font-weight: 600;
  color: var(--text);
  display: block;
  margin-bottom: 4px;
}

.wordbank-option small {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.mode-options {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.mode-options .btn {
  flex: 1;
  min-width: 120px;
}

/* ========== 练习记录详情 ========== */
.session-detail-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 24px;
}

.session-detail-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.session-detail-header h1 {
  font-size: 1.6rem;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.session-detail-card {
  background: var(--surface-raised);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.session-info {
  padding: 20px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.session-info p {
  margin: 6px 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.session-info p strong {
  color: var(--text);
  margin-right: 8px;
}

.session-words {
  padding: 20px 24px;
}

.session-words h3 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  color: var(--text);
}

.session-word-item {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  border-left: 4px solid;
}

.session-word-item.correct {
  background: var(--success-soft);
  border-left-color: var(--success);
}

.session-word-item.wrong {
  background: var(--danger-soft);
  border-left-color: var(--danger);
}

.word-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 4px;
}

.word-index {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.word-text {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text);
}

.word-status {
  margin-left: auto;
  font-size: 1.2rem;
}

.word-error {
  font-size: 0.85rem;
  color: var(--danger);
  margin-left: 36px;
  text-decoration: line-through;
}

.word-meaning {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-left: 36px;
  margin-top: 2px;
}

.word-time {
  font-size: 0.75rem;
  color: var(--text-light);
  margin-left: 36px;
  margin-top: 2px;
}

/* 最近活动可点击 */
.activity-item {
  cursor: pointer;
  transition: var(--transition);
}

.activity-item:hover {
  background: var(--surface-hover);
  border-radius: var(--radius-sm);
}

/* 自动跳转提示 */
.auto-advance-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 8px;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* 响应式 */
@media (max-width: 768px) {
  .wordbank-options {
    grid-template-columns: 1fr;
  }
  
  .mode-options .btn {
    flex: 100%;
  }
}

/* ========== 速度挑战设置面板 ========== */
.speed-settings-panel {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border: 1px solid #dee2e6;
  border-radius: 12px;
  padding: 0;
  margin: 0 24px 16px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.speed-settings-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
  color: #495057;
  background: #fff;
  border-bottom: 1px solid #e9ecef;
  cursor: pointer;
}

.speed-settings-title i:first-child {
  color: var(--brand-blue);
  margin-right: 8px;
}

.btn-toggle-settings {
  background: none;
  border: none;
  color: #adb5bd;
  cursor: pointer;
  padding: 4px;
  font-size: 14px;
  transition: color 0.2s;
}

.btn-toggle-settings:hover {
  color: var(--brand-blue);
}

.speed-settings-body {
  padding: 12px 16px;
  background: #f8f9fa;
}

.speed-setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid #e9ecef;
}

.speed-setting-row:last-child {
  border-bottom: none;
}

.speed-setting-row label:first-child {
  font-size: 13px;
  color: #495057;
  font-weight: 500;
}

.speed-setting-row select {
  padding: 6px 12px;
  border: 1px solid #ced4da;
  border-radius: 8px;
  font-size: 13px;
  background: #fff;
  color: #333;
  min-width: 100px;
}

.toggle-sm {
  transform: scale(0.85);
}

/* Activity items (紧凑版) */
.activity-list.compact {
  background: var(--surface-raised);
  border-radius: 14px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.activity-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.2s ease;
}

.activity-item:hover {
  background: var(--surface-hover);
  margin: 0 -6px;
  padding: 8px 6px;
  border-radius: 8px;
}

.activity-item:last-child {
  border-bottom: none;
}

.activity-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.activity-info .mode {
  font-weight: 600;
  color: var(--text);
  font-size: 0.85rem;
}

.activity-info .time {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.activity-score {
  font-size: 1rem;
  font-weight: 700;
  color: var(--brand);
}

.empty-state.mini {
  padding: 6px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.empty-state.mini i {
  font-size: 0.9rem;
  color: var(--brand);
  display: inline;
  margin: 0;
}

.empty-state.mini a {
  color: var(--brand);
  font-weight: 600;
  cursor: pointer;
}

.empty-state.mini a:hover {
  text-decoration: underline;
}

/* 首页「暂无记录」提示 - 加大字号 */
.empty-state.mini.home-empty {
  font-size: 1.05rem;
  padding: 14px 0;
}

.empty-state.mini.home-empty i {
  font-size: 1.3rem;
}

/* ========== 登录/注册样式 ========== */

.btn-login-nav {
  padding: 5px 16px;
  background: var(--brand);
  color: white;
  border: none;
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  line-height: 1; vertical-align: middle;
}

.btn-login-nav:hover {
  background: var(--brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(40, 167, 225, 0.3);
}

/* 已登录状态下，“登录”按钮变为“退出”按钮 */
.btn-login-nav.is-logout {
  background: var(--surface-hover, #f2f3f5);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-login-nav.is-logout:hover {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: var(--danger-soft);
  box-shadow: none;
}

.user-area .user-name {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
}

.user-dropdown {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 8px;
}

.user-name {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
}

.btn-logout {
  padding: 4px 10px;
  background: var(--surface-hover);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-logout:hover {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: var(--danger-soft);
}

/* 登录弹窗 */
#authModal .modal-content {
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.auth-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.auth-tab {
  padding: 8px 16px;
  border: none;
  background: none;
  color: var(--text-muted);
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.auth-tab:hover {
  color: var(--text);
}

.auth-tab.active {
  color: var(--brand);
  border-bottom-color: var(--brand);
  font-weight: 600;
}

#authModal .form-group input:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(40, 167, 225, 0.1);
}

#authModal .btn-primary:hover {
  background: var(--brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(40, 167, 225, 0.3);
}

#authModal .btn-primary:active {
  transform: translateY(0);
}