/* ═══════════════════════════════════════════
   PAGE-SPECIFIC LAYOUTS
   ═══════════════════════════════════════════ */

/* ─── Dashboard ─── */
.dashboard__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.dashboard__charts {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.dashboard__recent {
  margin-bottom: var(--space-8);
}

@media (max-width: 768px) {
  .dashboard__charts {
    grid-template-columns: 1fr;
  }
}

/* ─── Subjects ─── */
.subjects__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.subjects__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
}

.subjects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
}

/* Subject Card */
.subject-card {
  position: relative;
  overflow: hidden;
}

.subject-card__color-bar {
  height: 4px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.subject-card__name {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.subject-card__stats {
  display: flex;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.subject-card__actions {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  opacity: 0;
  transition: opacity var(--duration-150);
}

.subject-card:hover .subject-card__actions {
  opacity: 1;
}

/* ─── Subject Detail ─── */
.subject-detail__header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.subject-detail__color-dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.subject-detail__name {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
}

.subject-detail__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

@media (max-width: 768px) {
  .subject-detail__content {
    grid-template-columns: 1fr;
  }
}

/* ─── Study Session ─── */
.session__form-card {
  margin-bottom: var(--space-6);
}

.session__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.session__form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 640px) {
  .session__form-row {
    grid-template-columns: 1fr;
  }
}

.session__history {
  margin-top: var(--space-6);
}

.session__filter-group {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

@media (max-width: 640px) {
  .session__filter-group {
    width: 100%;
  }
  .session__filter-group .input--sm {
    flex: 1;
    min-width: 0;
  }
}

.session__summary {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

/* Session Item (list-style) */
.session-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  transition: background var(--duration-100);
}

.session-item:hover {
  background: var(--color-surface-hover);
}

.session-item__actions {
  display: flex;
  gap: var(--space-1);
  opacity: 0;
  transition: opacity var(--duration-150);
  flex-shrink: 0;
}

.session-item:hover .session-item__actions {
  opacity: 1;
}

@media (max-width: 640px) {
  .session-item__actions {
    opacity: 1;
  }
}

/* ─── Goals ─── */
.goals__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-4);
}

.goal-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.goal-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.goal-card__actions {
  display: flex;
  gap: var(--space-1);
  opacity: 0;
  transition: opacity var(--duration-150);
}

.goal-card:hover .goal-card__actions {
  opacity: 1;
}

@media (max-width: 640px) {
  .goal-card__actions {
    opacity: 1;
  }
}

.goal-card__body {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
}

.goal-card__values {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.goal-card__value {
  font-variant-numeric: tabular-nums;
}

.goal-card__value--current {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
}

.goal-card__value--target {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text-secondary);
}

.goal-card__separator {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.goal-card__percentage {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.goal-card__period {
  padding-top: var(--space-1);
  border-top: 1px solid var(--color-divider);
}

@media (max-width: 640px) {
  .goals__grid {
    grid-template-columns: 1fr;
  }
}

/* ─── Pomodoro ─── */
.pomodoro__layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: var(--space-6);
  align-items: start;
}

@media (max-width: 860px) {
  .pomodoro__layout {
    grid-template-columns: 1fr;
  }
}

.pomodoro__main {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.pomodoro__settings {
  max-width: 28rem;
}

.pomodoro__settings .session__form-row {
  grid-template-columns: 1fr 1fr;
}

.pomodoro__stats {
  display: flex;
  gap: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
  margin-bottom: var(--space-3);
}

.pomodoro__stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-0_5);
}

.pomodoro__stat-value {
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

.pomodoro__stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.pomodoro__cycles-list {
  max-height: 24rem;
  overflow-y: auto;
}

/* ─── Achievements ─── */
.achievements__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
}

.achievement-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  text-align: center;
  align-items: center;
  padding: var(--space-6) var(--space-4);
  transition: transform var(--duration-200), box-shadow var(--duration-200);
}

.achievement-card--unlocked {
  border-color: var(--color-success);
  background: var(--color-success-50);
}

[data-theme="dark"] .achievement-card--unlocked {
  background: var(--color-success-100);
}

.achievement-card--locked {
  opacity: 0.75;
}

.achievement-card--locked:hover {
  opacity: 1;
}

.achievement-card__icon {
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-neutral-100);
  color: var(--color-text-tertiary);
  flex-shrink: 0;
}

.achievement-card__icon--unlocked {
  background: var(--color-success);
  color: white;
}

[data-theme="dark"] .achievement-card__icon--unlocked {
  color: var(--color-success-900);
}

.achievement-card__info {
  flex: 1;
}

.achievement-card__title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.achievement-card__desc {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  line-height: var(--leading-relaxed);
}

.achievement-card__status {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.achievement-card__date {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.achievement-card__progress {
  width: 100%;
}

.achievement-card__pct {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  text-align: right;
  display: block;
  margin-top: var(--space-1);
}

@media (max-width: 640px) {
  .achievements__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 400px) {
  .achievements__grid {
    grid-template-columns: 1fr;
  }
}

/* ─── Offline Bar ─── */
.offline-bar {
  display: none;
  padding: var(--space-2) var(--space-4);
  background: var(--color-warning);
  color: var(--color-warning-900);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  text-align: center;
  position: sticky;
  top: 0;
  z-index: var(--z-header, 100);
  animation: slideDown var(--duration-250) var(--ease-out);
}

[data-theme="dark"] .offline-bar {
  color: #000;
}

html[data-offline] .offline-bar {
  display: block;
}

@keyframes slideDown {
  from { transform: translateY(-100%); }
  to { transform: translateY(0); }
}

/* ─── Tasks ─── */
.tasks__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.tasks__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
}

.tasks__filters {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.tasks__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

/* Task Item (Todoist-inspired) */
.task-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  transition: background var(--duration-100);
}

.task-item:hover {
  background: var(--color-surface-hover);
}

.task-item__checkbox {
  margin-top: 0.125rem;
  flex-shrink: 0;
}

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

.task-item__title {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: var(--leading-tight);
}

.task-item--completed .task-item__title {
  text-decoration: line-through;
  color: var(--color-text-tertiary);
}

.task-item__meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.task-item__priority {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: var(--radius-full);
}

.task-item__priority--high   { background: var(--color-priority-high); }
.task-item__priority--medium { background: var(--color-priority-medium); }
.task-item__priority--low    { background: var(--color-priority-low); }

.task-item__actions {
  display: flex;
  gap: var(--space-1);
  opacity: 0;
  transition: opacity var(--duration-150);
  flex-shrink: 0;
}

.task-item:hover .task-item__actions {
  opacity: 1;
}

/* ─── Calendar ─── */
.calendar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.calendar__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
}

.calendar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.calendar__month-label {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  min-width: 10rem;
  text-align: center;
}

.calendar__grid {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

/* ─── Reports ─── */
.reports__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

@media (max-width: 960px) {
  .reports__grid {
    grid-template-columns: 1fr;
  }
}

.reports__header {
  margin-bottom: var(--space-8);
}

.reports__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
}

.reports__filters {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.reports__charts {
  display: grid;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.reports__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ─── Settings ─── */
.settings__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
  margin-bottom: var(--space-8);
}

.settings__section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.settings__section-title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.settings__section-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.settings__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  max-width: 32rem;
}

.settings__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) 0;
}

.settings__row + .settings__row {
  border-top: 1px solid var(--color-divider);
}

.settings__row-label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text);
}

.settings__row-desc {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--space-0_5);
}

/* ─── Studies ─── */
.studies__filters {
  margin-bottom: var(--space-4);
}

.studies__search {
  position: relative;
  max-width: 28rem;
}

.studies__search-icon {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-tertiary);
  pointer-events: none;
  display: flex;
}

.studies__search-input {
  padding-left: var(--space-10);
}

.studies__chips {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.studies__chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1_5);
}

.chip {
  padding: var(--space-1_5) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--duration-150);
  white-space: nowrap;
}

.chip:hover {
  border-color: var(--color-border-hover);
  color: var(--color-text);
}

.chip--active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-on-primary);
}

.chip--active:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-text-on-primary);
}

.studies__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-4);
}

.study-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: border-color var(--duration-200);
}

.study-card:hover {
  border-color: var(--color-border-hover);
}

.study-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}

.study-card__info {
  flex: 1;
  min-width: 0;
}

.study-card__title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
  line-height: var(--leading-tight);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.study-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1_5);
}

.study-card__actions {
  display: flex;
  gap: var(--space-1);
  opacity: 0;
  transition: opacity var(--duration-150);
  flex-shrink: 0;
}

.study-card:hover .study-card__actions {
  opacity: 1;
}

.study-card__progress {
  display: flex;
  flex-direction: column;
  gap: var(--space-1_5);
}

.study-card__progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-xs);
}

.study-card__progress-label {
  color: var(--color-text-tertiary);
}

.study-card__progress-value {
  color: var(--color-text-secondary);
  font-weight: var(--font-medium);
}

.study-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.study-card__controls {
  display: flex;
  align-items: center;
  gap: var(--space-1_5);
}

.study-card__percentage {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  min-width: 2.5rem;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.study-card__date {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

.study-card__notes {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-subtle);
  border-radius: var(--radius-md);
  line-height: var(--leading-relaxed);
}

.badge--sm {
  font-size: 0.625rem;
  padding: var(--space-0_5) var(--space-1_5);
}

/* ═══════════════════════════════════════════
   TASKS
   ═══════════════════════════════════════════ */
.tasks__filters {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.task-item--done .list-item__title {
  text-decoration: line-through;
  opacity: 0.6;
}

.task-item__check:hover {
  border-color: var(--color-primary) !important;
}

/* ═══════════════════════════════════════════
   SETTINGS
   ═══════════════════════════════════════════ */
/* (rules defined alongside the original settings block above) */

/* ═══════════════════════════════════════════
   CALENDAR — redesigned Jun/2026
   ═══════════════════════════════════════════ */
.calendar__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.calendar__title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text);
}

.calendar__weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--space-1);
  text-align: center;
  margin-bottom: var(--space-2);
}

.calendar__weekday {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  padding: var(--space-1_5) 0;
}

.calendar__days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.calendar__cell {
  display: flex;
  flex-flow: row wrap;
  align-items: center;
  justify-content: center;
  gap: 1px;
  padding: var(--space-1);
  min-height: 3rem;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--duration-150) var(--ease-out);
  position: relative;
}

.calendar__cell:hover {
  background: var(--color-surface-hover);
}

.calendar__cell--empty {
  cursor: default;
}

.calendar__cell--empty:hover {
  background: transparent;
}

.calendar__cell--today {
  background: var(--color-primary-50);
}

[data-theme="dark"] .calendar__cell--today {
  background: var(--color-primary-100);
}

.calendar__cell--selected {
  background: var(--color-primary-50);
  box-shadow: inset 0 0 0 2px var(--color-primary);
}

[data-theme="dark"] .calendar__cell--selected {
  background: var(--color-primary-100);
}

.calendar__day {
  flex: 0 0 100%;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text);
  text-align: center;
  line-height: 1;
  background: none;
  min-height: 0;
  padding: 0;
  cursor: default;
  transition: none;
}

.calendar__cell--today .calendar__day {
  font-weight: var(--font-bold);
  color: var(--color-primary);
}

.calendar__dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  display: inline-block;
  flex-shrink: 0;
}

.calendar__dot--0 { background: var(--color-success); opacity: 0.3; }
.calendar__dot--1 { background: var(--color-success); opacity: 0.6; }
.calendar__dot--2 { background: var(--color-warning); }
.calendar__dot--3 { background: var(--color-danger); }

.calendar__minutes {
  font-size: 10px;
  color: var(--color-text-tertiary);
  line-height: 1;
}

.calendar__legend {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-top: var(--space-4);
  margin-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  flex-wrap: wrap;
}

@media (max-width: 640px) {
  .studies__grid {
    grid-template-columns: 1fr;
  }

  .study-card__actions {
    opacity: 1;
  }

  .study-card__footer {
    flex-direction: column;
    align-items: stretch;
  }

  .study-card__controls {
    justify-content: center;
  }

  .tasks__filters {
    flex-direction: column;
  }

  .calendar__cell {
    min-height: 2.5rem;
  }
}