/* === Task Card === */
.subject-group {
  margin-bottom: 24px;
}

.subject-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding: 0 4px;
}

.subject-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.subject-icon.chinese { background: linear-gradient(135deg, #FF7849, #FFB088); color: white; }
.subject-icon.math { background: linear-gradient(135deg, #118AB2, #06AED5); color: white; }
.subject-icon.english { background: linear-gradient(135deg, #EF476F, #FF7AA2); color: white; }
.subject-icon.pe { background: linear-gradient(135deg, #06D6A0, #4FE5BC); color: white; }
.subject-icon.tech { background: linear-gradient(135deg, #FFD166, #FFB347); color: white; }

.subject-name {
  font-family: 'Bagel Fat One', sans-serif;
  font-size: 22px;
  color: var(--night);
}

.subject-progress {
  margin-left: auto;
  font-size: 14px;
  font-weight: 700;
  color: var(--gray);
  background: white;
  padding: 6px 14px;
  border-radius: 100px;
  box-shadow: var(--shadow-sm);
}

.task-card {
  background: white;
  border-radius: var(--radius-md);
  padding: 18px 20px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  border-left: 4px solid transparent;
}

.task-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.task-card.done {
  border-color: var(--mint);
  background-color: #E8FAF3;
}

/* Add a small mint corner decoration via a pseudo-element for visual interest,
   without affecting opacity of the main card body */
.task-card.done::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, transparent 50%, rgba(6, 214, 160, 0.25) 50%);
  pointer-events: none;
  border-radius: 0 var(--radius-md) 0 0;
}

.task-card.done .task-title {
  text-decoration: line-through;
  text-decoration-color: var(--mint-deep);
  text-decoration-thickness: 2px;
}

.task-checkbox {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 2.5px solid var(--cream-2);
  background: white;
  position: relative;
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.task-card.done .task-checkbox {
  background: var(--mint);
  border-color: var(--mint);
  transform: scale(1.1);
}

.task-checkbox::after {
  content: '✓';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 16px;
  opacity: 0;
  transform: scale(0);
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.task-card.done .task-checkbox::after {
  opacity: 1;
  transform: scale(1);
}

.task-body {
  flex: 1;
  min-width: 0;
}

.task-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--night);
  margin-bottom: 4px;
  line-height: 1.4;
}

.task-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--gray);
}

.task-time {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
}

.task-tag {
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.task-tag.required {
  background: rgba(239, 71, 111, 0.15);
  color: var(--coral);
}

.task-tag.optional {
  background: rgba(135, 206, 235, 0.2);
  color: var(--cyan);
}

.task-tag.readonly {
  background: rgba(139, 131, 120, 0.15);
  color: var(--gray);
}

.task-tag.fixed {
  background: rgba(255, 120, 73, 0.15);
  color: var(--sunset-deep);
}

/* Category badges */
.task-tag.category {
  text-transform: none;
  letter-spacing: 0;
}

.task-tag.category.cat-school {
  background: rgba(255, 120, 73, 0.18);
  color: var(--sunset-deep);
  border: 1px solid rgba(255, 120, 73, 0.3);
}

.task-tag.category.cat-extra {
  background: rgba(17, 138, 178, 0.12);
  color: var(--cyan);
  border: 1px solid rgba(17, 138, 178, 0.25);
}

/* Card left border by category */
.task-card.cat-school {
  border-left-color: var(--sunset);
}

.task-card.cat-extra {
  border-left-color: var(--cyan);
}

.task-card.done { border-left-color: var(--mint) !important; }

/* === Special Alert === */
.special-alert {
  background: linear-gradient(135deg, #FEF3E2, #FFE5C4);
  border: 2px dashed var(--gold-deep);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 20px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.special-alert.caution {
  background: linear-gradient(135deg, #FFE5E5, #FFD0D0);
  border-color: var(--coral);
}

.special-alert.info {
  background: linear-gradient(135deg, #E0F7FA, #B2EBF2);
  border-color: var(--cyan);
}

.alert-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.alert-body {
  flex: 1;
}

.alert-title {
  font-weight: 800;
  color: var(--night);
  margin-bottom: 4px;
  font-size: 15px;
}

.alert-text {
  font-size: 14px;
  color: var(--brown);
}

/* === Phase Map removed === */

/* === Achievement === */
.achievement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.achievement {
  background: white;
  border-radius: var(--radius-md);
  padding: 20px 12px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s;
  position: relative;
}

.achievement.locked {
  opacity: 0.4;
  filter: grayscale(1);
}

.achievement:not(.locked):hover {
  transform: translateY(-4px) rotate(-2deg);
  box-shadow: var(--shadow-md);
}

.achievement-icon {
  font-size: 48px;
  margin-bottom: 8px;
  display: block;
}

.achievement-name {
  font-weight: 700;
  font-size: 13px;
  color: var(--night);
  margin-bottom: 4px;
}

.achievement-desc {
  font-size: 11px;
  color: var(--gray);
  line-height: 1.4;
}

.achievement.locked .achievement-icon::after {
  content: '🔒';
  position: absolute;
  font-size: 20px;
  margin-left: -10px;
  margin-top: -10px;
}

/* === Subject Detail View === */
.subject-detail {
  background: white;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-md);
  margin-bottom: 20px;
}

.subject-detail-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 2px dashed var(--cream-2);
}

.subject-detail-icon {
  width: 64px;
  height: 64px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: white;
}

.subject-detail-title {
  font-family: 'Bagel Fat One', sans-serif;
  font-size: 28px;
  color: var(--night);
}

.subject-detail-sub {
  font-size: 14px;
  color: var(--gray);
  margin-top: 2px;
}

.phase-list {
  display: grid;
  gap: 12px;
}

/* Category indicators in subjects view */
.cat-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 6px 0;
  line-height: 1.6;
  font-size: 14px;
}

.cat-bar {
  display: inline-block;
  width: 4px;
  min-height: 18px;
  border-radius: 2px;
  flex-shrink: 0;
  margin-top: 4px;
}
.cat-bar.cat-school { background: var(--sunset); }
.cat-bar.cat-extra { background: var(--cyan); }

.cat-mini {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 100px;
  flex-shrink: 0;
  margin-top: 4px;
}
.cat-mini.cat-school {
  background: rgba(255, 120, 73, 0.18);
  color: var(--sunset-deep);
}
.cat-mini.cat-extra {
  background: rgba(17, 138, 178, 0.12);
  color: var(--cyan);
}

.cat-text {
  flex: 1;
  color: var(--brown);
}

.legend-school {
  display: inline-block;
  color: var(--sunset-deep);
  font-weight: 700;
  margin-left: 8px;
}

.legend-extra {
  display: inline-block;
  color: var(--cyan);
  font-weight: 700;
  margin-left: 4px;
}

.phase-list-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px;
  background: var(--cream);
  border-radius: var(--radius-md);
  border-left: 4px solid;
}

.phase-list-item.p1 { border-color: #81C784; }
.phase-list-item.p2 { border-color: #FFA726; }
.phase-list-item.p3 { border-color: #4FC3F7; }
.phase-list-item.p4 { border-color: #EC407A; }

.phase-list-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--night);
  flex-shrink: 0;
}

.phase-list-body {
  flex: 1;
}

.phase-list-title {
  font-weight: 700;
  color: var(--night);
  margin-bottom: 6px;
}

.phase-list-content {
  font-size: 14px;
  color: var(--brown);
  line-height: 1.6;
}