/* ============================================
   上课记录 — 样式
   设计方向: 暗色专业数据面板，深灰蓝基底 + 青/金色点缀
   ============================================ */

/* === CSS 变量 === */
:root {
  --cr-bg: var(--bg);
  --cr-surface: var(--surface);
  --cr-surface-hover: var(--surface-hover);
  --cr-surface-raised: var(--surface-raised);
  --cr-border: var(--border);
  --cr-border-light: var(--border-light);
  --cr-text: var(--text);
  --cr-text-muted: var(--text-muted);
  --cr-text-dim: var(--text-dim);
  --cr-accent: var(--accent);
  --cr-accent-dim: var(--accent-dim);
  --cr-accent-glow: var(--accent-glow);
  --cr-gold: var(--gold);
  --cr-gold-glow: var(--gold-glow);
  --cr-green: var(--green);
  --cr-green-glow: var(--green-glow);
  --cr-red: var(--red);
  --cr-red-glow: var(--red-glow);
  --cr-purple: var(--purple);
  --cr-amber: var(--amber);
  --cr-radius: var(--radius);
  --cr-radius-sm: var(--radius-sm);
  --cr-radius-xs: var(--radius-xs);
  --cr-shadow: var(--shadow);
  --cr-transition: var(--transition);
}

/* === 基础重置 === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
  background: var(--cr-bg);
  color: var(--cr-text);
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(34, 211, 238, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 100%, rgba(245, 158, 11, 0.03) 0%, transparent 60%);
}

/* === 顶部导航 === */
.cr-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background: var(--cr-surface);
  border-bottom: 1px solid var(--cr-border);
  z-index: 100;
  backdrop-filter: blur(12px);
  flex-shrink: 0;
}

.cr-header-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.cr-back-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--cr-radius-sm);
  color: var(--cr-text-muted);
  text-decoration: none;
  transition: all var(--cr-transition);
  border: 1px solid transparent;
}
.cr-back-btn:hover {
  color: var(--cr-accent);
  background: var(--cr-accent-glow);
  border-color: var(--cr-accent-dim);
}

.cr-title {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--cr-text);
  display: flex; align-items: center; gap: 8px;
}
.cr-title-icon { flex-shrink: 0; }

.cr-total-badge {
  font-size: 13px;
  color: var(--cr-text-muted);
  background: var(--cr-surface-raised);
  border: 1px solid var(--cr-border);
  padding: 3px 12px;
  border-radius: 20px;
}

.cr-header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.cr-user-name {
  font-size: 13px;
  color: var(--cr-text-muted);
}

/* 右侧操作按钮 */
.cr-btn--action {
  padding: 5px 14px;
  border-radius: var(--cr-radius-xs);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--cr-transition);
  border: 1px solid var(--cr-border-light);
  background: transparent;
  color: var(--cr-text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}
.cr-btn--action:hover { background: var(--cr-surface-hover); color: var(--cr-text); }


/* === 筛选栏 === */
.cr-filters {
  padding: 14px 28px 8px;
  background: var(--cr-surface);
  border-bottom: 1px solid var(--cr-border);
  flex-shrink: 0;
}

.cr-filter-row {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: nowrap;
}

.cr-filter-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.cr-filter-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--cr-text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.cr-text-input,
.cr-select,
.cr-date-input {
  background: var(--cr-bg);
  border: 1px solid var(--cr-border);
  color: var(--cr-text);
  padding: 8px 12px;
  border-radius: var(--cr-radius-xs);
  font-size: 14px;
  font-family: inherit;
  transition: border-color var(--cr-transition);
  outline: none;
}
.cr-text-input { width: 160px; }
.cr-select { min-width: 120px; }
.cr-text-input:hover,
.cr-select:hover,
.cr-date-input:hover { border-color: var(--cr-border-light); }
.cr-text-input:focus,
.cr-select:focus,
.cr-date-input:focus { border-color: var(--cr-accent); box-shadow: 0 0 0 3px var(--cr-accent-glow); }

.cr-date-range {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.cr-date-sep { color: var(--cr-text-dim); font-size: 13px; }
.cr-date-input { width: 140px; }
.cr-date-input::-webkit-calendar-picker-indicator { filter: invert(0.6); cursor: pointer; }

.cr-date-quick {
  display: inline-flex;
  gap: 6px;
  margin-left: 8px;
}
.cr-date-quick-btn {
  background: var(--cr-bg);
  border: 1px solid var(--cr-border);
  color: var(--cr-text-muted);
  padding: 2px 10px;
  border-radius: var(--cr-radius-xs);
  font-size: 11px;
  cursor: pointer;
  transition: all var(--cr-transition);
}
.cr-date-quick-btn:hover {
  border-color: var(--cr-accent);
  color: var(--cr-accent);
}
.cr-date-quick-btn.active {
  background: var(--cr-accent-glow);
  border-color: var(--cr-accent);
  color: var(--cr-accent);
}

.cr-filter-actions {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  padding-bottom: 1px;
}

.cr-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--cr-radius-xs);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  font-family: inherit;
  transition: all var(--cr-transition);
  white-space: nowrap;
}
.cr-btn-primary {
  background: var(--cr-accent);
  color: #0b0f1a;
  border-color: var(--cr-accent);
  font-weight: 600;
}
.cr-btn-primary:hover {
  background: #38dffa;
  box-shadow: 0 0 20px var(--cr-accent-glow);
}
.cr-btn-ghost {
  background: transparent;
  color: var(--cr-text-muted);
  border-color: var(--cr-border);
}
.cr-btn-ghost:hover {
  color: var(--cr-text);
  border-color: var(--cr-border-light);
  background: var(--cr-surface-hover);
}
.cr-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  box-shadow: none;
}

/* === 统计卡片 === */
.cr-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 6px 28px;
  flex-shrink: 0;
}

.cr-stat-card {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--cr-surface);
  border: 1px solid var(--cr-border);
  border-radius: var(--cr-radius);
}

.cr-stat-icon {
  width: 24px; height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--cr-radius-sm);
  flex-shrink: 0;
}
.cr-stat-icon svg {
  width: 13px !important;
  height: 13px !important;
}
.cr-stat-icon--total    { background: var(--cr-accent-glow); color: var(--cr-accent); }
.cr-stat-icon--normal   { background: var(--cr-green-glow); color: var(--cr-green); }
.cr-stat-icon--photo    { background: var(--cr-gold-glow); color: var(--cr-gold); }
.cr-stat-icon--video    { background: rgba(167,139,250,0.15); color: #a78bfa; }
.cr-stat-icon--makeup   { background: rgba(96,165,250,0.15); color: #60a5fa; }
.cr-stat-icon--leave    { background: rgba(248,113,113,0.2); color: #f87171; }

.cr-stat-body { display: flex; align-items: baseline; gap: 4px; }
.cr-stat-value { font-size: 17px; font-weight: 700; line-height: 1.2; white-space: nowrap; }
.cr-stat-label { font-size: 11px; color: var(--cr-text-muted); white-space: nowrap; }

/* === 表格容器 === */
.cr-table-container {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding: 0 28px 28px;
}

.cr-table-wrapper {
  background: var(--cr-surface);
  border: 1px solid var(--cr-border);
  border-radius: var(--cr-radius);
  overflow: auto;
  flex: 1;
  min-height: 0;
}

.dt-pager {
  flex-shrink: 0;
}

.cr-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.cr-table thead {
  background: var(--cr-surface-raised);
  position: sticky;
  top: 0;
  z-index: 1;
}

.cr-table th {
  padding: 8px 12px;
  text-align: left;
  font-weight: 600;
  font-size: 11.5px;
  color: var(--cr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--cr-border);
  white-space: nowrap;
}

.cr-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--cr-border);
  vertical-align: middle;
}

.cr-table tbody tr {
  transition: background var(--cr-transition);
}
.cr-table tbody tr:hover {
  background: var(--cr-surface-hover);
}
.cr-table tbody tr:last-child td {
  border-bottom: none;
}

/* 列宽 */
.th-num       { width: 5%; }
.th-student  { width: 10%; }
.th-teacher  { width: 10%; }
.th-date     { width: 9%; }
.th-count    { width: 5%; }
.th-course   { width: 16%; }
.th-classnote { width: 18%; }
.th-attendance { width: 10%; }
.th-note     { width: 7%; }
.th-photos   { width: 10%; }

/* 出勤标签 */
.cr-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.cr-tag--normal   { background: var(--cr-green-glow); color: var(--cr-green); }
.cr-tag--late     { background: var(--cr-amber); opacity: 0.15; color: var(--cr-amber); }
.cr-tag--leave    { background: rgba(248,113,113,0.2); color: #f87171; border: 1px solid rgba(248,113,113,0.35); }
.cr-tag--early    { background: rgba(251,191,36,0.15); color: #fcd34d; }
.cr-tag--makeup   { background: var(--cr-accent-glow); color: var(--cr-accent); }
.cr-tag--absent   { background: var(--cr-red-glow); color: var(--cr-red); }
.cr-tag--unknown  { background: rgba(132,145,166,0.12); color: var(--cr-text-dim); }

/* 照片数 */
.cr-photo-count {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-weight: 600;
  color: var(--cr-gold);
  cursor: default;
}
.cr-photo-count.has-photos {
  cursor: pointer;
  padding: 4px 10px;
  border-radius: var(--cr-radius-xs);
  background: var(--cr-gold-glow);
  border: 1px solid rgba(245,158,11,0.2);
  transition: all var(--cr-transition);
}
.cr-photo-count.has-photos:hover {
  background: rgba(245,158,11,0.25);
  border-color: rgba(245,158,11,0.35);
}
.cr-photo-count.no-photos {
  color: var(--cr-text-dim);
}

/* 操作按钮 */
.cr-act-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border-radius: var(--cr-radius-xs);
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--cr-border);
  background: transparent;
  color: var(--cr-accent);
  cursor: pointer;
  font-family: inherit;
  transition: all var(--cr-transition);
}
.cr-act-btn:hover {
  background: var(--cr-accent-glow);
  border-color: var(--cr-accent-dim);
}
.cr-act-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* === 上传弹窗 === */
.cr-upload-zone {
  border: 2px dashed var(--cr-border);
  border-radius: var(--cr-radius);
  padding: 48px 24px;
  text-align: center;
  transition: all var(--cr-transition);
  color: var(--cr-text-muted);
}
.cr-upload-zone--active {
  border-color: var(--cr-accent);
  background: var(--cr-accent-glow);
  color: var(--cr-accent);
}
.cr-upload-hint {
  font-size: 15px;
  margin: 12px 0 6px;
  color: var(--cr-text);
}
.cr-upload-sub {
  font-size: 12px;
  color: var(--cr-text-dim);
  margin-bottom: 16px;
}
.cr-upload-queue {
  margin-top: 12px;
}
.cr-upload-item {
  padding: 8px 12px;
  font-size: 13px;
  color: var(--cr-text-muted);
  border-bottom: 1px solid var(--cr-border);
}
.cr-upload-progress {
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.cr-progress-bar {
  flex: 1;
  height: 6px;
  background: var(--cr-border);
  border-radius: 3px;
  overflow: hidden;
}
.cr-progress-fill {
  height: 100%;
  background: var(--cr-accent);
  border-radius: 3px;
  transition: width 0.3s ease;
  width: 0;
}
.cr-progress-text {
  font-size: 13px;
  color: var(--cr-accent);
  font-weight: 600;
  min-width: 40px;
}
.cr-upload-result {
  margin-top: 12px;
  padding: 12px;
  background: var(--cr-surface-raised);
  border-radius: var(--cr-radius-sm);
  border: 1px solid var(--cr-border);
}

/* 空状态 / 加载 */
.cr-empty,
.cr-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 0;
  color: var(--cr-text-muted);
  gap: 16px;
  flex-shrink: 0;
}

.cr-spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--cr-border);
  border-top-color: var(--cr-accent);
  border-radius: 50%;
  animation: cr-spin 0.8s linear infinite;
}
@keyframes cr-spin { to { transform: rotate(360deg); } }

/* === 照片预览弹窗 === */
.cr-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  animation: cr-fadeIn 0.2s ease;
}
@keyframes cr-fadeIn { from { opacity: 0; } to { opacity: 1; } }

.cr-modal {
  background: var(--cr-surface);
  border: 1px solid var(--cr-border);
  border-radius: var(--cr-radius);
  width: 90vw;
  max-width: 900px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  animation: cr-scaleIn 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes cr-scaleIn { from { opacity: 0; transform: scale(0.95) translateY(10px); } to { opacity: 1; transform: scale(1) translateY(0); } }

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

.cr-modal-header h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--cr-text);
}

.cr-modal-close {
  width: 32px; height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--cr-border);
  border-radius: var(--cr-radius-xs);
  color: var(--cr-text-muted);
  font-size: 20px;
  cursor: pointer;
  transition: all var(--cr-transition);
}
.cr-modal-close:hover {
  background: var(--cr-red-glow);
  color: var(--cr-red);
  border-color: rgba(248,113,113,0.3);
}

.cr-modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
}

.cr-modal-footer {
  display: flex;
  justify-content: flex-end;
  padding: 14px 24px;
  border-top: 1px solid var(--cr-border);
}

/* 照片网格 */
#cr-photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.cr-photo-card {
  background: var(--cr-surface-raised);
  border: 1px solid var(--cr-border);
  border-radius: var(--cr-radius-sm);
  overflow: hidden;
  transition: all var(--cr-transition);
  position: relative;
}
.cr-photo-card:hover {
  border-color: var(--cr-accent-dim);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

.cr-photo-delete {
  position: absolute;
  top: 6px;
  right: 6px;
  z-index: 5;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,0.6);
  color: #ff6b6b;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  padding: 0;
}
.cr-photo-delete:hover {
  background: #ff6b6b;
  color: #fff;
}

.cr-photo-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
  background: var(--cr-bg);
  cursor: pointer;
}

.cr-photo-info {
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cr-photo-name {
  font-size: 12px;
  color: var(--cr-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cr-photo-meta {
  font-size: 11px;
  color: var(--cr-text-dim);
}

/* 图片预览大图 */
.cr-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 300;
  cursor: zoom-out;
}
.cr-lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 4px;
}
.cr-lightbox-close {
  position: fixed;
  top: 16px;
  right: 24px;
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  z-index: 301;
}
.cr-lightbox-close:hover { background: rgba(255,255,255,0.2); }

/* === 响应式 === */
@media (max-width: 900px) {
  .cr-stats { grid-template-columns: repeat(2, 1fr); }
  .cr-table-wrapper { overflow-x: auto; }
  .cr-modal { width: 95vw; }
  #cr-photo-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
}

/* 手机端 */
@media (max-width: 600px) {
  /* Header 紧凑两行 */
  .cr-header { flex-wrap: wrap; padding: 8px 12px; gap: 4px; }
  .cr-header-left { gap: 4px; min-width: 0; }
  .cr-back-btn { width: 30px; height: 30px; }
  .cr-title { font-size: 15px; gap: 3px; }
  .cr-title-icon { width: 18px; height: 18px; }
  .cr-total-badge { font-size: 11px; padding: 2px 7px; white-space: nowrap; }
  .cr-header-right { width: 100%; justify-content: flex-end; padding-top: 2px; }
  .cr-user-name { font-size: 12px; }

  /* 筛选栏 2 列 grid */
  .cr-filters { padding: 10px 12px 8px; }
  .cr-filter-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 10px;
  }
  /* Row1: Teacher | Attendance */
  .cr-filter-row > :nth-child(1) { grid-column: 1; grid-row: 1; }
  .cr-filter-row > :nth-child(5) { grid-column: 2; grid-row: 1; }
  /* Row2: Date (full width) */
  .cr-filter-row > :nth-child(2) { grid-column: 1 / -1; grid-row: 2; }
  /* Row3: Student name | Class */
  .cr-filter-row > :nth-child(3) { grid-column: 1; grid-row: 3; }
  .cr-filter-row > :nth-child(4) { grid-column: 2; grid-row: 3; }
  /* Row4: Buttons */
  .cr-filter-actions { grid-column: 1 / -1; grid-row: 4; justify-content: center; }

  .cr-text-input, .cr-select, .cr-date-input { width: 100%; box-sizing: border-box; font-size: 13px; }
  .cr-date-input { flex: 1; min-width: 0; width: auto; }
  .cr-date-range { flex-wrap: nowrap; }
  .cr-date-quick { flex-wrap: wrap; margin-left: 0; }
  .cr-filter-label { font-size: 11px; }
  .cr-btn { font-size: 13px; padding: 7px 16px; }
}