/**
 * Personalized Learning Planner & Adaptive Practice Stylesheet
 * NTMK Rebuild Phase 03B — Task 8
 *
 * Rich modern aesthetics, glassmorphism accents, mobile-first responsive layout,
 * dark/light mode compatible via CSS Custom Properties.
 */

/* ── Container & Layout ── */
.planner-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem 1rem;
}

.planner-nav-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 2rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}

.planner-tab-btn {
  background: transparent;
  border: none;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-sub);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.planner-tab-btn:hover {
  background: var(--bg-surface-hover);
  color: var(--text-main);
}

.planner-tab-btn.active {
  background: var(--brand-primary-light);
  color: var(--brand-primary);
  border-bottom: 2px solid var(--brand-primary);
}

/* ── Today's Learning Dashboard ── */
.planner-hero-card {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.95) 0%, rgba(15, 23, 42, 0.98) 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 30px;
  margin-bottom: 2rem;
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.35);
  color: #f8fafc;
}

.planner-hero-stats {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.planner-stat-item {
  display: flex;
  flex-direction: column;
}

.planner-stat-num {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--brand-primary);
  line-height: 1.2;
}

.planner-stat-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-weight: 500;
}

.planner-progress-bar-wrap {
  width: 100%;
  height: 8px;
  background: var(--border-subtle);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 1rem;
}

.planner-progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--brand-primary) 0%, var(--color-success) 100%);
  transition: width 0.5s ease;
}

/* ── Task Cards ── */
.planner-task-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.planner-task-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.planner-task-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  border-color: var(--border-strong);
}

.planner-task-card.priority-highlight {
  border-left: 4px solid var(--brand-primary);
  background: linear-gradient(90deg, rgba(37, 99, 235, 0.03) 0%, var(--bg-surface) 100%);
}

.planner-task-card.completed {
  opacity: 0.75;
  background: var(--bg-surface-dim);
}

.planner-task-card.blocked {
  border-left: 4px solid var(--color-warning);
  background: rgba(245, 158, 11, 0.03);
}

.planner-task-info {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
}

.planner-task-badges {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.task-type-badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.task-type-badge.remediation {
  background: rgba(239, 68, 68, 0.12);
  color: #dc2626;
}

.task-type-badge.adaptive_practice {
  background: rgba(37, 99, 235, 0.12);
  color: #2563eb;
}

.task-type-badge.wrong_review {
  background: rgba(245, 158, 11, 0.14);
  color: #d97706;
}

.task-type-badge.spaced_review {
  background: rgba(16, 185, 129, 0.12);
  color: #059669;
}

.task-type-badge.followup_assessment {
  background: rgba(147, 51, 234, 0.12);
  color: #7c3aed;
}

.task-status-pill {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
}

.task-status-pill.available {
  background: var(--color-success-light);
  color: var(--color-success);
}

.task-status-pill.in_progress {
  background: var(--brand-primary-light);
  color: var(--brand-primary);
}

.task-status-pill.completed {
  background: var(--bg-surface-dim);
  color: var(--text-dim);
}

.task-status-pill.pending {
  background: var(--border-subtle);
  color: var(--text-sub);
}

.task-status-pill.blocked {
  background: rgba(245, 158, 11, 0.15);
  color: #d97706;
}

.planner-task-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}

.planner-task-reason {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.4;
  margin: 0;
}

.planner-task-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-shrink: 0;
}

/* ── Calendar & Timeline ── */
.planner-timeline-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.planner-day-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.planner-day-card.today {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 2px var(--brand-primary-light);
}

.planner-day-card.rest-day {
  background: var(--bg-surface-dim);
  opacity: 0.6;
}

.planner-day-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.5rem;
}

.planner-day-date {
  font-weight: 700;
  font-size: 0.95rem;
}

.planner-day-minutes {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-dim);
}

/* ── Focus Mode Workspace ── */
.focus-mode-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-main);
  z-index: 1000;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.focus-mode-header {
  border-bottom: 1px solid var(--border-subtle);
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-surface);
  position: sticky;
  top: 0;
  z-index: 10;
}

.focus-mode-body {
  max-width: 860px;
  margin: 0 auto;
  width: 100%;
  padding: 2rem 1rem 4rem 1rem;
  flex: 1;
}

.focus-question-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}

.focus-question-prompt {
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.focus-options-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.focus-option-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  text-align: left;
  font-size: 1rem;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.focus-option-btn:hover {
  background: var(--bg-surface-hover);
  border-color: var(--brand-primary);
}

.focus-option-btn.selected {
  background: var(--brand-primary-light);
  border-color: var(--brand-primary);
  font-weight: 600;
}

/* ── Result & Review Screen ── */
.focus-result-summary {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2rem;
  text-align: center;
  margin-bottom: 2rem;
}

.focus-eval-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}

.focus-eval-item.correct {
  border-left: 4px solid var(--color-success);
}

.focus-eval-item.incorrect {
  border-left: 4px solid var(--color-danger);
}

/* ── Settings Screen ── */
.planner-settings-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2rem;
  max-width: 680px;
  margin: 0 auto;
}

.planner-form-group {
  margin-bottom: 1.5rem;
}

.planner-form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.planner-form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-main);
  color: var(--text-main);
  font-size: 0.95rem;
}

.planner-days-selector {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.planner-day-toggle {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-sub);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.planner-day-toggle.selected {
  background: var(--brand-primary);
  color: #fff;
  border-color: var(--brand-primary);
}

/* ── Mobile Responsiveness ── */
@media (max-width: 768px) {
  .planner-hero-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .planner-task-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .planner-task-actions {
    width: 100%;
    justify-content: flex-end;
  }
}

.planner-empty-state-card {
  background: rgba(30, 41, 59, 0.65) !important;
  border: 1px dashed rgba(255, 255, 255, 0.15) !important;
  border-radius: 20px !important;
  padding: 50px 24px !important;
  color: #f8fafc !important;
}
.planner-empty-state-card h3 { color: #f8fafc !important; }
.planner-empty-state-card p { color: #94a3b8 !important; }

.planner-hero-card h1, .planner-hero-card h2, .planner-hero-card h3 {
  color: #f8fafc !important;
}
.planner-hero-card p {
  color: #cbd5e1 !important;
}
.planner-tab-btn {
  color: #475569;
}
[data-theme="dark"] .planner-tab-btn {
  color: #94a3b8;
}
.planner-tab-btn.active {
  background: rgba(124, 58, 237, 0.2) !important;
  color: #c084fc !important;
  border-bottom: 2px solid #7c3aed !important;
}