/* =========================================================
   畅畅背单词 · 系统设置页 (settings.css)
   ---------------------------------------------------------
   只放设置页专属的东西：设置面板、分区、两列/四列栅格、
   密码显隐按钮、底部保存栏。
   导航 / 卡片 / 按钮 / 表单 / 提示 都在 base.css。
   ========================================================= */

/* ---------------------------------------------------------
   1. 设置面板
   --------------------------------------------------------- */
.settings-card {
  max-width: 760px;
  margin: 0 auto;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-color);
  padding: 28px;
  box-shadow: var(--shadow-soft);
}

.settings-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.settings-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* ---------------------------------------------------------
   2. 分区
   --------------------------------------------------------- */
.settings-section {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px dashed var(--border-color);
}

.settings-section:last-of-type {
  border-bottom: none;
  margin-bottom: 8px;
  padding-bottom: 0;
}

.section-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-desc {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 14px;
}

/* 优先级提示条 */
.priority-banner {
  font-size: 13px;
  color: var(--text-primary);
  background: #f0fdf4;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid #bbf7d0;
  margin-bottom: 16px;
  line-height: 1.6;
}

.priority-tag {
  display: inline-block;
  font-weight: 800;
  color: #15803d;
}

/* ---------------------------------------------------------
   3. 栅格
   --------------------------------------------------------- */
.grid-4col {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

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

/* ---------------------------------------------------------
   4. 带按钮的输入框（密码显隐）
   --------------------------------------------------------- */
.input-with-btn {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-btn .form-input {
  padding-right: 42px;
}

.toggle-pwd-btn {
  position: absolute;
  right: 8px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neutral-500);
  border-radius: 4px;
  transition: color 0.2s, background-color 0.2s;
}

.toggle-pwd-btn:hover {
  color: var(--text-primary);
  background-color: var(--neutral-100);
}

/* ---------------------------------------------------------
   6. 底部保存栏
   --------------------------------------------------------- */
.action-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 2px solid var(--border-color);
}

.action-bar-hint {
  font-size: 12.5px;
  color: var(--text-muted);
}

/* ---------------------------------------------------------
   7. 数据库信息小卡（只读）
   --------------------------------------------------------- */
.db-info-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.db-info-item {
  flex: 1 1 130px;
  background: var(--neutral-50);
  border: 1px solid var(--neutral-200);
  border-radius: 8px;
  padding: 10px 12px;
}

.db-info-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
}

.db-info-value {
  font-size: 18px;
  font-weight: 900;
  color: var(--text-primary);
  margin-top: 2px;
}

/* ---------------------------------------------------------
   8. 响应式
   --------------------------------------------------------- */
@media (max-width: 700px) {
  .grid-4col { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 520px) {
  .settings-card { padding: 18px; }
  .grid-4col,
  .grid-2col { grid-template-columns: 1fr; }
  .action-bar { justify-content: stretch; }
  .action-bar .btn { width: 100%; }
}