/* ==========================================================================
   极简本地健身记录器 (Personal Fitness Tracker)
   全离线、高对比度、响应式现代样式
   ========================================================================== */

:root {
  --bg-primary: #0f172a;       /* 深深空蓝背景 */
  --bg-surface: #1e293b;       /* 卡片/表面层背景 */
  --bg-surface-hover: #334155; /* 卡片悬停/高亮背景 */
  --bg-input: #0b1120;         /* 输入框深色底 */
  
  --border-color: #334155;     /* 边框默认色 */
  --border-focus: #38bdf8;     /* 聚焦高亮色 */

  --text-primary: #f8fafc;     /* 主文字亮白 */
  --text-secondary: #94a3b8;   /* 次要文字中灰 */
  --text-muted: #64748b;       /* 提示性文字浅灰 */

  --brand-primary: #38bdf8;    /* 天空蓝主色彩 */
  --brand-primary-hover: #0284c7;
  --accent-success: #10b981;   /* 成功绿 */
  --accent-warning: #f59e0b;   /* 警示橙黄 */
  --accent-danger: #ef4444;    /* 危险红 */
  --accent-purple: #a855f7;    /* 标签紫 */

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 顶部导航与状态栏 */
.header {
  background-color: rgba(30, 41, 59, 0.95);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1rem;
}

.header-container {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
  text-decoration: none;
}

.brand-icon {
  width: 30px;
  height: 30px;
  background: linear-gradient(135deg, #0284c7, #38bdf8);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.save-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
  transition: all 0.2s ease;
}

.save-status-badge.saving {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.3);
}

.save-status-badge.error {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.3);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: currentColor;
}

/* 顶部主选项卡切换 */
.nav-tabs {
  display: flex;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  justify-content: center;
}

.nav-tabs-container {
  max-width: 960px;
  width: 100%;
  display: flex;
  padding: 0.25rem 1rem 0;
  gap: 0.5rem;
}

.nav-tab-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.65rem 1rem;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.15s ease;
}

.nav-tab-btn:hover {
  color: var(--text-primary);
}

.nav-tab-btn.active {
  color: var(--brand-primary);
  border-bottom-color: var(--brand-primary);
}

/* 主内容容器 */
.main-content {
  flex: 1;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
}

/* 通用按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
  text-decoration: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background-color: var(--brand-primary);
  color: #0f172a;
}
.btn-primary:hover {
  background-color: var(--brand-primary-hover);
  color: #ffffff;
}

.btn-secondary {
  background-color: var(--bg-surface-hover);
  color: var(--text-primary);
  border-color: var(--border-color);
}
.btn-secondary:hover {
  background-color: #475569;
}

.btn-success {
  background-color: var(--accent-success);
  color: #ffffff;
}
.btn-success:hover {
  background-color: #059669;
}

.btn-danger {
  background-color: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.3);
}
.btn-danger:hover {
  background-color: var(--accent-danger);
  color: #ffffff;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.btn-sm {
  font-size: 0.8rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
}

.btn-block {
  width: 100%;
}

/* 卡片容器 */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}

/* 录入页面表单 */
.editor-header-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.85rem;
  margin-bottom: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-control {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.55rem 0.75rem;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s ease;
}

.form-control:focus {
  border-color: var(--border-focus);
}

textarea.form-control {
  min-height: 65px;
  resize: vertical;
}

/* 动作卡片 */
.exercise-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.15rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-md);
  position: relative;
}

.exercise-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.exercise-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.exercise-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-category {
  background-color: rgba(56, 189, 248, 0.15);
  color: var(--brand-primary);
}

.badge-dumbbell {
  background-color: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-bodyweight {
  background-color: rgba(168, 85, 247, 0.15);
  color: #c084fc;
}

/* 上次训练表现提示条 */
.last-performance-banner {
  background-color: rgba(15, 23, 42, 0.6);
  border-left: 3px solid var(--brand-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 0.45rem 0.75rem;
  font-size: 0.8rem;
  color: #93c5fd;
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* 每组数据表格 */
.sets-table-wrapper {
  overflow-x: auto;
  margin-bottom: 0.75rem;
  -webkit-overflow-scrolling: touch;
}

.sets-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.sets-table th {
  padding: 0.4rem 0.5rem;
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.sets-table td {
  padding: 0.45rem 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  vertical-align: middle;
}

.set-number-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--bg-surface-hover);
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.8rem;
}

.input-number-cell {
  position: relative;
  min-width: 90px;
}

.input-number-cell input {
  width: 100%;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: #ffffff;
  padding: 0.45rem 0.45rem;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
}

.input-number-cell input:focus {
  border-color: var(--border-focus);
  outline: none;
}

.quick-adj-group {
  display: flex;
  gap: 0.2rem;
  margin-top: 0.25rem;
}

.quick-adj-btn {
  background: var(--bg-surface-hover);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  border-radius: 3px;
  font-size: 0.7rem;
  padding: 0.15rem 0.35rem;
  cursor: pointer;
}

.quick-adj-btn:hover {
  background: #475569;
  color: #ffffff;
}

.bw-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
}

.bw-checkbox-label input {
  accent-color: var(--brand-primary);
  width: 16px;
  height: 16px;
}

.table-actions-cell {
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

/* 动作底部操作栏 */
.exercise-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding-top: 0.65rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-btn-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

/* 录入界面底部主操作栏 */
.editor-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding: 1rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  position: sticky;
  bottom: 1rem;
  z-index: 40;
}

/* 历史记录部分 */
.filter-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
  margin-bottom: 1.25rem;
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  align-items: flex-end;
}

.workout-history-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.15rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease;
}

.workout-history-card:hover {
  border-color: #475569;
}

.history-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.65rem;
}

.history-date-box {
  display: flex;
  flex-direction: column;
}

.history-date {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.history-time {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.history-meta-pills {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.pill-stat {
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface-hover);
  color: var(--text-secondary);
}

.history-notes-box {
  background-color: rgba(15, 23, 42, 0.4);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.65rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  border-left: 2px solid #64748b;
}

.history-exercise-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.85rem;
}

.chip-exercise {
  background-color: rgba(56, 189, 248, 0.1);
  color: #7dd3fc;
  border: 1px solid rgba(56, 189, 248, 0.2);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.chip-sets-count {
  font-size: 0.75rem;
  background-color: rgba(255, 255, 255, 0.1);
  padding: 0.05rem 0.3rem;
  border-radius: 4px;
}

.history-card-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
  padding-top: 0.65rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* 历史卡片展开详情 */
.history-detail-section {
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--border-color);
  animation: fadeIn 0.2s ease;
}

.detail-exercise-block {
  margin-bottom: 0.75rem;
}

.detail-exercise-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: #38bdf8;
  margin-bottom: 0.35rem;
}

.detail-sets-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.detail-set-tag {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--text-primary);
}

/* 空状态卡片 */
.empty-state-card {
  text-align: center;
  padding: 3rem 1.5rem;
  background-color: var(--bg-surface);
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  margin: 1.5rem 0;
}

.empty-icon {
  font-size: 2.8rem;
  margin-bottom: 0.75rem;
}

.empty-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.empty-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 440px;
  margin: 0 auto 1.25rem;
}

/* 模态弹窗 */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
}

.modal-content {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 560px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  animation: modalScaleUp 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
}

.modal-close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
}

.modal-close-btn:hover {
  color: #ffffff;
}

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 0.85rem 1.25rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* 动作选择器分类标签 */
.category-pills {
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  margin-bottom: 0.85rem;
}

.category-pill {
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-full);
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.category-pill.active {
  background-color: var(--brand-primary);
  color: #0f172a;
  border-color: var(--brand-primary);
}

.exercise-select-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 320px;
  overflow-y: auto;
}

.exercise-select-item {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.exercise-select-item:hover {
  border-color: var(--brand-primary);
  background-color: rgba(56, 189, 248, 0.05);
}

.exercise-item-name {
  font-weight: 600;
  color: #ffffff;
}

.exercise-item-sub {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 0.15rem;
}

/* Toast 提示浮窗 */
.toast-container {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  background-color: #1e293b;
  border: 1px solid var(--border-color);
  color: #ffffff;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  font-size: 0.9rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: toastSlideUp 0.25s ease-out;
  pointer-events: auto;
}

.toast-success {
  border-color: var(--accent-success);
  color: #a7f3d0;
}

.toast-error {
  border-color: var(--accent-danger);
  color: #fecaca;
}

/* 动效 */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes modalScaleUp {
  from { transform: scale(0.96); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

@keyframes toastSlideUp {
  from { transform: translateY(15px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* 响应式适配移动端 */
@media (max-width: 640px) {
  .header-container {
    flex-wrap: wrap;
  }
  
  .brand {
    font-size: 1.05rem;
  }

  .main-content {
    padding: 0.85rem 0.65rem 4rem;
  }

  .card, .exercise-card {
    padding: 0.85rem;
    border-radius: var(--radius-md);
  }

  .sets-table th, .sets-table td {
    padding: 0.35rem 0.25rem;
  }

  .input-number-cell {
    min-width: 70px;
  }

  .input-number-cell input {
    font-size: 0.95rem;
    padding: 0.35rem 0.2rem;
  }

  .quick-adj-group {
    display: none; /* 移动端空间紧张，由自适应或批量功能分担 */
  }

  .editor-bottom-bar {
    padding: 0.65rem 0.85rem;
    bottom: 0.5rem;
  }

  .btn {
    padding: 0.45rem 0.75rem;
    font-size: 0.85rem;
  }
}

/* =================== v2 增强样式：回收站、快照、持久化状态与提示 =================== */

.save-status-badge.draft {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border-color: rgba(56, 189, 248, 0.3);
}

.save-status-badge.saved {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.3);
}

.mode-banner {
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
  color: #e0f2fe;
}

.recycle-bin-toggle-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-color);
  margin-top: 1.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.recycle-bin-toggle-bar:hover {
  background: var(--bg-surface-hover);
  border-color: var(--text-secondary);
}

.recycle-bin-container {
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.recycle-item-card {
  background: #182234;
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.snapshot-item-card {
  background: #182234;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.backup-reminder-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
}

.backup-reminder-badge.warning {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.backup-reminder-badge.ok {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}