/* ============================================================
   ClassSchedule 全局样式 —— 移动端优先，桌面端自适应
   ============================================================ */
:root {
  --primary: #1a73e8;
  --primary-dark: #1558b0;
  --danger: #d93025;
  --bg: #f1f3f4;
  --card: #ffffff;
  --border: #dadce0;
  --text: #202124;
  --text-sub: #5f6368;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

/* ---------- 顶部栏 ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-title { font-size: 17px; font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar-actions { display: flex; gap: 6px; flex-shrink: 0; }

/* 版本号小标签（管理界面顶栏） */
.version-tag {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-sub);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1px 8px;
  margin-left: 4px;
  vertical-align: middle;
  white-space: nowrap;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.4;
}
.btn:hover { background: #f8f9fa; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.small { padding: 4px 10px; font-size: 13px; }
.btn.block { width: 100%; margin-top: 10px; }

/* ---------- 工具条（课表查看页） ---------- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}
.toolbar-group { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.range-text { color: var(--text-sub); font-size: 13px; }
.inline { display: inline-flex; align-items: center; gap: 4px; }

/* ---------- 表单 ---------- */
input, select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  background: var(--card);
  min-width: 0;
}
input:focus, select:focus { outline: 2px solid rgba(26,115,232,.3); border-color: var(--primary); }
label { display: block; margin-bottom: 10px; }
label input, label select { width: 100%; margin-top: 4px; }
.form-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin: 10px 0; }
.form-row input, .form-row select { flex: 1; min-width: 130px; }

/* ---------- 行编辑器（课时 / 分割条） ---------- */
.row-editor {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  padding: 8px 10px;
  margin-bottom: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.row-editor.sep { background: #f1f3f4; border-style: dashed; }
.row-editor .row-tag {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: #e8f0fe;
  padding: 2px 8px;
  border-radius: 10px;
}
.row-editor.sep .row-tag { color: var(--text-sub); background: #dadce0; }
.row-editor .r-name { flex: 2; min-width: 110px; }
.row-editor .r-start, .row-editor .r-end { flex: 1; min-width: 100px; }
.row-editor .row-mid { flex-shrink: 0; color: var(--text-sub); }
.row-editor .row-btns { flex-shrink: 0; display: flex; gap: 4px; margin-left: auto; }

/* ---------- 登录 / 创建 ---------- */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.auth-card {
  width: 100%;
  max-width: 360px;
  background: var(--card);
  border-radius: 10px;
  padding: 28px 24px;
  box-shadow: 0 1px 4px rgba(0,0,0,.12);
}
.auth-card h1 { text-align: center; font-size: 24px; margin-bottom: 4px; }
.auth-sub { text-align: center; color: var(--text-sub); margin-bottom: 16px; }

/* ---------- 提示 ---------- */
.alert { padding: 10px 12px; border-radius: 6px; margin-bottom: 12px; font-size: 14px; }
.alert.error { background: #fce8e6; color: var(--danger); border: 1px solid #f5c6c2; }
.alert.ok { background: #e6f4ea; color: #137333; border: 1px solid #b7dfc0; }

/* ---------- 页签 ---------- */
.tabs {
  display: flex;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.tab {
  flex: 1;
  padding: 11px 8px;
  border: none;
  background: transparent;
  font-size: 14px;
  cursor: pointer;
  color: var(--text-sub);
  white-space: nowrap;
}
.tab.active { color: var(--primary); font-weight: 600; box-shadow: inset 0 -2px 0 var(--primary); }

/* ---------- 面板 ---------- */
.panel { display: none; padding: 14px; }
.panel.active { display: block; }
.panel-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.panel-head h3 { font-size: 16px; }
.hint { color: var(--text-sub); font-size: 12px; }

/* ---------- 课表网格 ---------- */
.table-wrap { overflow-x: auto; background: var(--card); border-radius: 8px; margin: 10px 0; }
.sched-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  min-width: 480px;          /* 手机端允许横向滚动 */
}
.sched-table th, .sched-table td {
  border: 1px solid var(--border);
  padding: 0;
  vertical-align: top;
  text-align: center;
}
.sched-table thead th {
  background: #e8f0fe;
  font-weight: 600;
  font-size: 13px;
  padding: 8px 2px;
}
.sched-table thead th.today { background: #fce8e6; color: var(--danger); }
.sched-table thead th.weekend { background: #f1f3f4; }
.sched-table thead th.period-head {
  background: #f8f9fa;
  width: 72px;          /* 与左侧“第几节”列宽度一致 */
}
.sched-table td.time-col {
  background: #f8f9fa;
  font-size: 12px;
  color: var(--text-sub);
  width: 72px;
  white-space: nowrap;
  vertical-align: middle;
}
.sched-table td.cell { height: 62px; }
.sched-table td.cell.today { background: #fef7e0; }
.sched-table td.cell.weekend { background: #fbfbfb; }

/* 分割条行：横贯整行、居中显示名称 */
.sched-table td.sep-row {
  background: #f1f3f4;
  font-weight: 600;
  font-size: 13px;
  color: var(--text-sub);
  height: 26px;
  vertical-align: middle;
}

/* 课程单元格 */
.course-card {
  display: flex;
  flex-direction: column;
  align-items: center;      /* 水平居中 */
  justify-content: center;  /* 垂直居中 */
  height: 100%;
  min-height: 58px;
  padding: 5px 6px;
  text-align: center;
  font-size: 12px;
  overflow: hidden;
  cursor: pointer;
}
.course-card .c-name { font-weight: 700; font-size: 13px; display: block; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.course-card .c-sub { color: var(--text-sub); display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; }

/* 课程颜色（浅色背景，便于阅读） */
.c-color-0  { background: #e8f0fe; }
.c-color-1  { background: #e6f4ea; }
.c-color-2  { background: #fef7e0; }
.c-color-3  { background: #fce8e6; }
.c-color-4  { background: #f3e8fd; }
.c-color-5  { background: #e0f7fa; }
.c-color-6  { background: #fff3e0; }
.c-color-7  { background: #e8f5e9; }
.c-color-8  { background: #fbe9e7; }
.c-color-9  { background: #ede7f6; }
.c-color-10 { background: #e1f5fe; }
.c-color-11 { background: #fce4ec; }

/* ---------- 课程 / 用户列表 ---------- */
.list-table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: 8px; }
.list-table th, .list-table td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
  font-size: 13px;
}
.list-table th { background: #f8f9fa; font-weight: 600; }

/* ---------- 设置项 ---------- */
.setting-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 12px;
}
.setting-item label { font-weight: 600; margin-bottom: 6px; }
.setting-item.danger { border-color: #f5c6c2; }
.token-row { display: flex; gap: 6px; align-items: center; }
.token-row input { flex: 1; font-family: Consolas, monospace; }

/* ---------- 底部 ---------- */
.footer {
  text-align: center;
  color: var(--text-sub);
  font-size: 12px;
  padding: 14px;
}

/* ---------- 弹层 ---------- */
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}
.modal-mask.show { display: flex; }
.modal {
  width: 100%;
  max-width: 380px;
  max-height: 80vh;
  overflow-y: auto;
  background: var(--card);
  border-radius: 10px;
  padding: 18px;
}
.modal h3 { margin-bottom: 10px; }
.course-pick {
  display: block;
  width: 100%;
  text-align: left;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 8px;
  background: var(--card);
  cursor: pointer;
  font-size: 14px;
}
.course-pick:hover { background: #f8f9fa; }
.course-pick .cp-name { font-weight: 600; }
.course-pick .cp-sub { color: var(--text-sub); font-size: 12px; }
.course-pick.clear { color: var(--danger); text-align: center; }

/* ---------- 错误页 ---------- */
.error-page { text-align: center; padding: 60px 20px; }
.error-page h1 { font-size: 28px; margin-bottom: 12px; }
.error-page p { color: var(--text-sub); margin-bottom: 20px; }

/* 桌面端加宽 */
@media (min-width: 768px) {
  .panel { padding: 20px; }
  .table-wrap { margin: 14px 0; }
  .sched-table td.cell { height: 74px; }
}