/* ============================================
   Study Plan Page
   ============================================ */
.plan-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap; gap: var(--space-3);
}

.plan-streak {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: linear-gradient(135deg, #F59E0B, #EAB308);
  border-radius: var(--radius-lg);
  color: #fff; font-weight: var(--weight-semibold);
}
.plan-streak__icon { font-size: 1.5rem; }
.plan-streak__days { font-size: var(--text-2xl); font-weight: var(--weight-bold); }
.plan-streak__label { font-size: var(--text-xs); opacity: 0.9; }

/* Calendar */
.calendar {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-6);
}
.calendar__header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: var(--space-4);
}
.calendar__month {
  font-size: var(--text-lg); font-weight: var(--weight-semibold);
}
.calendar__nav {
  display: flex; gap: var(--space-2);
}
.calendar__grid {
  display: grid; grid-template-columns: repeat(7, 1fr);
  gap: var(--space-1);
}
.calendar__day-name {
  text-align: center; font-size: var(--text-xs);
  font-weight: var(--weight-semibold); color: var(--text-tertiary);
  padding: var(--space-2);
}
.calendar__day {
  aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}
.calendar__day:hover { background: var(--bg-surface-secondary); }
.calendar__day.today {
  background: var(--color-primary);
  color: #fff; font-weight: var(--weight-semibold);
}
.calendar__day.completed::after {
  content: ''; position: absolute; bottom: 4px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-accent);
}
.calendar__day.has-tasks::after {
  content: ''; position: absolute; bottom: 4px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-primary-light);
}
.calendar__day.other-month { color: var(--text-tertiary); }

/* Daily Tasks */
.plan-tasks {
  margin-bottom: var(--space-6);
}
.plan-task {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
  transition: all var(--transition-fast);
}
.plan-task:hover { border-color: var(--color-primary-light); }
.plan-task.done {
  opacity: 0.6;
  background: var(--bg-surface-secondary);
}
.plan-task__check {
  width: 22px; height: 22px; border-radius: var(--radius-sm);
  border: 2px solid var(--border-color); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.plan-task__check:hover { border-color: var(--color-accent); }
.plan-task.done .plan-task__check {
  background: var(--color-accent); border-color: var(--color-accent);
  color: #fff;
}
.plan-task__info { flex: 1; }
.plan-task__title {
  font-size: var(--text-sm); font-weight: var(--weight-medium);
}
.plan-task.done .plan-task__title { text-decoration: line-through; }
.plan-task__detail {
  font-size: var(--text-xs); color: var(--text-tertiary);
  margin-top: 2px;
}
.plan-task__duration {
  font-size: var(--text-xs); color: var(--text-tertiary);
  white-space: nowrap;
}

/* Projection card */
.projection-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.projection-timeline {
  display: flex; justify-content: space-between;
  position: relative; padding-top: var(--space-6);
}
.projection-timeline::before {
  content: ''; position: absolute; top: 26px; left: 0; right: 0;
  height: 3px; background: var(--bg-surface-secondary);
  border-radius: var(--radius-full);
}
.projection-point {
  display: flex; flex-direction: column; align-items: center;
  position: relative; z-index: 1;
}
.projection-point__dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--color-primary);
  margin-bottom: var(--space-2);
}
.projection-point__score {
  font-size: var(--text-lg); font-weight: var(--weight-bold);
}
.projection-point__label {
  font-size: var(--text-xs); color: var(--text-tertiary);
}