/* ========== 主界面（仪表盘）样式 ========== */

/* 欢迎区 */
.dash-welcome {
  display: flex;
  align-items: center;
  gap: 20px;
  background: linear-gradient(135deg, #1a237e, #283593, #1a73e8);
  color: #fff;
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 24px;
}

.dash-avatar {
  font-size: 3rem;
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  flex-shrink: 0;
}

.dash-welcome-text {
  flex: 1;
}

.dash-welcome-text h2 {
  font-size: 1.3rem;
  margin-bottom: 4px;
}

.dash-welcome-text p {
  font-size: 0.85rem;
  opacity: 0.8;
}

/* 迷你统计 */
.dash-stats-mini {
  display: flex;
  gap: 16px;
}

.dash-stat-mini {
  text-align: center;
  padding: 10px 16px;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-sm);
  min-width: 72px;
}

.dash-stat-num {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
}

.dash-stat-lbl {
  display: block;
  font-size: 0.7rem;
  opacity: 0.75;
  margin-top: 2px;
}

/* 导航卡片网格 */
.dash-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.dash-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  cursor: pointer;
  transition: var(--transition);
  border-top: 4px solid var(--card-color, var(--primary));
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.dash-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.dash-card-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.dash-card-body {
  width: 100%;
}

.dash-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}

.dash-card-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* 响应式 */
@media (max-width: 768px) {
  .dash-welcome {
    flex-direction: column;
    text-align: center;
    padding: 20px 16px;
  }

  .dash-stats-mini {
    justify-content: center;
  }

  .dash-cards {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }
}

/* 年级选择器 */
.dash-grade-select {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}
.dash-grade-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  padding-top: 4px;
}
.dash-grade-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex: 1;
}
.dash-grade-group {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}
.dash-grade-group-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-right: 2px;
  white-space: nowrap;
}
.dash-grade-btn {
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-body);
  color: var(--text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.dash-grade-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.dash-grade-btn.selected {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
/* ========== 暗色模式适配 ========== */
[data-theme="dark"] .modal-overlay {
  background: rgba(0,0,0,0.7);
}
[data-theme="dark"] .modal-content {
  background: var(--bg-card);
  color: var(--text);
}
[data-theme="dark"] .history-table {
  color: var(--text);
}
[data-theme="dark"] .history-table td {
  color: var(--text-secondary);
}
[data-theme="dark"] .history-table tr:hover {
  background: #2a2a40;
}
[data-theme="dark"] input, [data-theme="dark"] select {
  background: var(--bg-input);
  color: var(--text);
  border-color: var(--border);
}
[data-theme="dark"] ::placeholder {
  color: var(--text-muted);
}