/* =====================================================
   plan.css — 学习计划模块样式（T09）
   仅覆盖 #/plan 视图组件（plan- 前缀）；不修改 css/style.css
   （并行任务在用）。配色一律复用 :root 既有变量，
   禁引入新硬编码色值（架构 §6 约定 #3）。
   ===================================================== */

/* ============ 生成 / 重新生成表单 ============ */
.plan-form {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px 20px;
  align-items: start;
}
.plan-field label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--text-2); margin-bottom: 6px;
}
.plan-field input {
  width: 100%; border: 1.5px solid var(--border); border-radius: 9px;
  padding: 9px 12px; font-size: 14px; font-family: inherit;
  background: #fff; color: var(--text); transition: border-color .12s;
}
.plan-field input:focus { outline: none; border-color: var(--primary); }
.plan-field-tip { font-size: 12px; color: var(--text-3); margin-top: 6px; line-height: 1.6; }
.plan-form-actions { grid-column: 1 / -1; display: flex; gap: 10px; flex-wrap: wrap; }

/* ============ 总体进度条 ============ */
.plan-overall {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 16px 20px; margin-bottom: 20px;
}
.plan-overall-head {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 13.5px; font-weight: 600; color: var(--text-2); margin-bottom: 10px;
}
.plan-overall-head span:last-child { color: var(--primary); font-variant-numeric: tabular-nums; }
.plan-overall-bar {
  height: 10px; border-radius: 99px; overflow: hidden;
  background: #eef0f6;
}
.plan-overall-bar i {
  display: block; height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, var(--primary), #7c5cfc);
  transition: width .25s;
}

/* ============ 工具栏 ============ */
.plan-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap; margin-bottom: 14px;
}
.plan-view-switch, .plan-toolbar-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.plan-history-toggle { margin-bottom: 14px; }
.plan-history { margin-bottom: 20px; }

/* ============ 每日安排列表 ============ */
.plan-day-list { display: flex; flex-direction: column; gap: 14px; }
.plan-day {
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--card); padding: 14px 18px;
}
.plan-day.is-today {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.plan-day.is-checked { background: var(--green-bg); border-color: var(--green); }
.plan-day.is-missed { border-style: dashed; }
.plan-day-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; flex-wrap: wrap; margin-bottom: 10px;
}
.plan-day-title { font-size: 14.5px; font-weight: 700; }
.plan-day-badges { display: flex; gap: 6px; flex-wrap: wrap; }
.plan-badge {
  font-size: 11.5px; font-weight: 700; border-radius: 99px; padding: 2px 10px;
}
.plan-badge.b-today { background: var(--primary); color: #fff; }
.plan-badge.b-next { background: var(--primary-light); color: var(--primary); }
.plan-badge.b-checked { background: var(--green); color: #fff; }
.plan-badge.b-missed { background: var(--red-bg); color: var(--red); }

/* ---- 任务行 ---- */
.plan-day-tasks { display: flex; flex-direction: column; gap: 8px; }
.plan-task {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  border: 1px solid var(--border); border-radius: 9px;
  padding: 9px 12px; background: var(--card);
}
.plan-day.is-checked .plan-task { background: var(--card); }
.plan-task.is-done { opacity: .62; }
.plan-task.is-done .plan-task-label { text-decoration: line-through; }
.plan-task-check { width: 16px; height: 16px; flex-shrink: 0; accent-color: var(--primary); cursor: pointer; }
.plan-task-type {
  flex-shrink: 0; font-size: 11.5px; font-weight: 700; border-radius: 6px; padding: 2px 8px;
}
.plan-task-type.tt-read { background: var(--primary-light); color: var(--primary); }
.plan-task-type.tt-quiz { background: var(--orange-bg); color: var(--orange); }
.plan-task-type.tt-flash { background: var(--green-bg); color: var(--green); }
.plan-task-type.tt-review { background: var(--red-bg); color: var(--red); }
.plan-task-main { flex: 1; min-width: 180px; }
.plan-task-label { font-size: 13.5px; font-weight: 600; line-height: 1.5; }
.plan-task-meta {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  font-size: 12px; color: var(--text-3); margin-top: 2px;
}
.plan-ch-pill {
  font-size: 11.5px; font-weight: 700; border-radius: 99px; padding: 1px 9px;
  background: #eef0f6; color: var(--text-2);
}
.plan-ch-pill.is-pass { background: var(--green-bg); color: var(--green); }

/* ---- 日脚（分钟数 + 打卡） ---- */
.plan-day-foot {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; flex-wrap: wrap; margin-top: 10px;
  padding-top: 10px; border-top: 1px dashed var(--border);
}
.plan-day-min { font-size: 12.5px; color: var(--text-3); font-variant-numeric: tabular-nums; }

/* ============ 日历视图 ============ */
.plan-cal-nav { display: flex; gap: 8px; flex-wrap: wrap; }
.plan-cal-week, .plan-cal-grid {
  display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px;
}
.plan-cal-week { margin-bottom: 6px; }
.plan-cal-wd {
  text-align: center; font-size: 12px; font-weight: 700; color: var(--text-3);
  padding: 4px 0;
}
.plan-cal-cell {
  min-height: 58px; border: 1px solid var(--border); border-radius: 9px;
  padding: 6px 8px; display: flex; flex-direction: column; gap: 4px;
  background: var(--card); text-align: left; font-family: inherit;
}
.plan-cal-cell.is-empty { border: none; background: transparent; }
.plan-cal-cell.is-today { border-color: var(--primary); box-shadow: 0 0 0 2px var(--primary-light); }
.plan-cal-cell.is-checked { background: var(--green-bg); border-color: var(--green); }
.plan-cal-cell.is-missed { border-style: dashed; }
button.plan-cal-cell { cursor: pointer; transition: all .12s; }
button.plan-cal-cell:hover { border-color: var(--primary); background: var(--primary-light); }
.plan-cal-num { font-size: 13px; font-weight: 700; color: var(--text-2); }
.plan-cal-cell.is-today .plan-cal-num { color: var(--primary); }
.plan-cal-dot {
  font-size: 10.5px; font-weight: 700; color: var(--text-3);
  background: #eef0f6; border-radius: 99px; padding: 0 7px; align-self: flex-start;
}
.plan-cal-dot.is-full { background: var(--green); color: #fff; }
.plan-cal-legend {
  display: flex; gap: 16px; flex-wrap: wrap; align-items: center;
  margin-top: 14px; font-size: 12px; color: var(--text-3);
}
.plan-cal-legend .lg {
  display: inline-block; width: 10px; height: 10px; border-radius: 3px;
  margin-right: 5px; vertical-align: -1px;
}
.plan-cal-legend .lg.is-checked { background: var(--green); }
.plan-cal-legend .lg.is-missed { background: var(--red); }
.plan-cal-legend .lg.is-today { background: var(--primary); }

/* ============ 响应式（≤900px，与 style.css 断点一致） ============ */
@media (max-width: 900px) {
  .plan-form { grid-template-columns: 1fr; gap: 14px; }
  .plan-task { gap: 8px; }
  .plan-task-main { min-width: 140px; }
  .plan-cal-cell { min-height: 48px; padding: 4px 6px; }
  .plan-cal-dot { font-size: 10px; }
}

/* ============ 仪表盘「今日任务卡」（T12，计划联动） ============ */
.today-task {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
}
.today-task:hover { background: var(--primary-light); }
.today-task.is-done .today-task-label {
  text-decoration: line-through;
  color: var(--text-3);
}
.today-task-check { flex: none; width: 16px; height: 16px; cursor: pointer; }
.today-task-label { flex: 1; min-width: 0; font-size: 14px; }
.today-task-min { flex: none; font-size: 12px; color: var(--text-3); }