/* ==========================================================================
   REUSABLE UI COMPONENTS (Callouts, Cards, Tabs, Decision Trees, Timelines)
   ========================================================================== */

/* --------------------------------------------------------------------------
   BREADCRUMBS
   -------------------------------------------------------------------------- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 1rem;
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-primary-brown);
}

.breadcrumb-separator {
  color: var(--color-border-strong);
  font-size: 0.75rem;
}

/* --------------------------------------------------------------------------
   BADGES
   -------------------------------------------------------------------------- */
.phase-badge {
  display: inline-flex;
  align-items: center;
  background-color: var(--color-primary-brown);
  color: var(--color-warm-bg);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tag-badge {
  display: inline-flex;
  align-items: center;
  background-color: var(--color-surface-card-hover);
  color: var(--color-primary-brown);
  border: 1px solid var(--color-border-strong);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   9 SPECIALIZED REUSABLE CALLOUT BOXES
   -------------------------------------------------------------------------- */
.callout {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border-left: 5px solid;
  margin: 1.75rem 0;
  box-shadow: var(--shadow-sm);
}

.callout-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  margin-top: 0.15rem;
}

.callout-content {
  flex: 1;
}

.callout-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  letter-spacing: -0.01em;
}

.callout-content p {
  font-size: 0.925rem;
  margin-bottom: 0;
  line-height: 1.6;
}

/* 1. Note Callout */
.callout-note {
  background-color: var(--color-note-bg);
  border-left-color: var(--color-note-border);
  color: var(--color-note-text);
}
.callout-note .callout-title { color: var(--color-note-text); }
.callout-note .callout-icon { fill: var(--color-note-icon); }

/* 2. Tip Callout */
.callout-tip {
  background-color: var(--color-tip-bg);
  border-left-color: var(--color-tip-border);
  color: var(--color-tip-text);
}
.callout-tip .callout-title { color: var(--color-tip-text); }
.callout-tip .callout-icon { fill: var(--color-tip-icon); }

/* 3. Warning Callout */
.callout-warning {
  background-color: var(--color-warning-bg);
  border-left-color: var(--color-warning-border);
  color: var(--color-warning-text);
}
.callout-warning .callout-title { color: var(--color-warning-text); }
.callout-warning .callout-icon { fill: var(--color-warning-icon); }

/* 4. Danger Callout */
.callout-danger {
  background-color: var(--color-danger-bg);
  border-left-color: var(--color-danger-border);
  color: var(--color-danger-text);
}
.callout-danger .callout-title { color: var(--color-danger-text); }
.callout-danger .callout-icon { fill: var(--color-danger-icon); }

/* 5. Best Practice Callout */
.callout-bestpractice {
  background-color: var(--color-bestpractice-bg);
  border-left-color: var(--color-bestpractice-border);
  color: var(--color-bestpractice-text);
}
.callout-bestpractice .callout-title { color: var(--color-bestpractice-text); }
.callout-bestpractice .callout-icon { fill: var(--color-bestpractice-icon); }

/* 6. Transwave Insight Callout */
.callout-transwave {
  background-color: var(--color-transwave-bg);
  border-left-color: var(--color-transwave-border);
  color: var(--color-transwave-text);
}
.callout-transwave .callout-title { color: var(--color-transwave-text); }
.callout-transwave .callout-icon { fill: var(--color-transwave-icon); }

/* 7. Riverpod Docs Callout */
.callout-riverpod {
  background-color: var(--color-riverpod-bg);
  border-left-color: var(--color-riverpod-border);
  color: var(--color-riverpod-text);
}
.callout-riverpod .callout-title { color: var(--color-riverpod-text); }
.callout-riverpod .callout-icon { fill: var(--color-riverpod-icon); }

/* 8. Common Mistake Callout */
.callout-mistake {
  background-color: var(--color-mistake-bg);
  border-left-color: var(--color-mistake-border);
  color: var(--color-mistake-text);
}
.callout-mistake .callout-title { color: var(--color-mistake-text); }
.callout-mistake .callout-icon { fill: var(--color-mistake-icon); }

/* 9. Performance Callout */
.callout-perf {
  background-color: var(--color-perf-bg);
  border-left-color: var(--color-perf-border);
  color: var(--color-perf-text);
}
.callout-perf .callout-title { color: var(--color-perf-text); }
.callout-perf .callout-icon { fill: var(--color-perf-icon); }

/* --------------------------------------------------------------------------
   5-STEP COMPARISON FLOW COMPONENT
   -------------------------------------------------------------------------- */
.comparison-card-flow {
  background-color: var(--color-surface-white);
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-md);
}

.flow-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-primary-brown);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.flow-step {
  display: flex;
  gap: 1rem;
  position: relative;
  padding-bottom: 1.5rem;
}

.flow-step:last-child {
  padding-bottom: 0;
}

.flow-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 17px;
  top: 36px;
  bottom: 0;
  width: 2px;
  background-color: var(--color-border-strong);
}

.flow-step-num {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-brown);
  color: var(--color-warm-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  flex-shrink: 0;
  z-index: 1;
}

.flow-step-content {
  flex: 1;
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.flow-step-heading {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-dark-brown);
  margin-bottom: 0.35rem;
}

.flow-step-body {
  font-size: 0.9rem;
  color: var(--color-text-main);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   VISUAL DECISION TREE COMPONENT
   -------------------------------------------------------------------------- */
.decision-tree {
  background-color: var(--color-surface-white);
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-md);
}

.tree-node {
  background-color: var(--color-surface-card);
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  font-weight: 700;
  color: var(--color-dark-brown);
  text-align: center;
  max-width: 400px;
  margin: 0 auto 1.5rem auto;
}

.tree-branches {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  position: relative;
}

.tree-branch {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.tree-branch-label {
  display: inline-block;
  background-color: var(--color-accent-orange);
  color: #FFF;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.tree-result-card {
  width: 100%;
  background-color: var(--color-surface-card-hover);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: center;
}

.tree-result-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-primary-brown);
  margin-bottom: 0.35rem;
}

.tree-result-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   STATE MANAGEMENT EVOLUTION TIMELINE COMPONENT
   -------------------------------------------------------------------------- */
.evolution-timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin: 2.5rem 0;
  position: relative;
  padding-left: 2rem;
}

.evolution-timeline::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 10px;
  bottom: 10px;
  width: 3px;
  background: linear-gradient(180deg, var(--color-primary-brown), var(--color-accent-orange));
}

.timeline-node {
  position: relative;
  background-color: var(--color-surface-white);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
}

.timeline-node::before {
  content: '';
  position: absolute;
  left: -2.35rem;
  top: 1.25rem;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background-color: var(--color-accent-orange);
  border: 3px solid var(--color-warm-bg);
  box-shadow: 0 0 0 2px var(--color-primary-brown);
}

.timeline-era-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent-orange);
  margin-bottom: 0.25rem;
}

.timeline-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-dark-brown);
  margin-bottom: 0.75rem;
}

.timeline-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  font-size: 0.875rem;
}

.timeline-field {
  background-color: var(--color-surface-card);
  padding: 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
}

.timeline-field-label {
  font-weight: 700;
  color: var(--color-primary-brown);
  margin-bottom: 0.2rem;
  font-size: 0.8rem;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   INTERACTIVE TABS COMPONENT
   -------------------------------------------------------------------------- */
.tab-group {
  margin: 2rem 0;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-surface-white);
  box-shadow: var(--shadow-sm);
}

.tab-nav {
  display: flex;
  background-color: var(--color-surface-card);
  border-bottom: 1px solid var(--color-border-strong);
  overflow-x: auto;
}

.tab-btn {
  padding: 0.85rem 1.25rem;
  border: none;
  background: none;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--color-primary-brown);
  background-color: var(--color-surface-card-hover);
}

.tab-btn.active {
  color: var(--color-primary-brown);
  border-bottom-color: var(--color-accent-orange);
  background-color: var(--color-surface-white);
}

.tab-pane {
  display: none;
  padding: 1.5rem;
}

.tab-pane.active {
  display: block;
}

/* --------------------------------------------------------------------------
   ACCORDIONS & GLOBAL CONTROLS
   -------------------------------------------------------------------------- */
.accordion-controls {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.btn-ctrl {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-muted);
  cursor: pointer;
}
.btn-ctrl:hover {
  background-color: var(--color-surface-card-hover);
  color: var(--color-primary-brown);
}

.accordion {
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 1rem 0 2rem 0;
  background-color: var(--color-surface-white);
}

.accordion-item {
  border-bottom: 1px solid var(--color-border-subtle);
}
.accordion-item:last-child {
  border-bottom: none;
}

.accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background-color: var(--color-surface-card);
  border: none;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-dark-brown);
  text-align: left;
  cursor: pointer;
}

.accordion-header:hover {
  background-color: var(--color-surface-card-hover);
}

.accordion-icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-body {
  display: none;
  padding: 1.25rem;
  background-color: var(--color-surface-white);
  border-top: 1px solid var(--color-border-subtle);
}

.accordion-item.active .accordion-body {
  display: block;
}

/* --------------------------------------------------------------------------
   SPOILER COMPONENT
   -------------------------------------------------------------------------- */
.spoiler {
  position: relative;
  background-color: var(--color-surface-card);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin: 1.5rem 0;
  cursor: pointer;
  user-select: none;
}

.spoiler-content {
  filter: blur(6px);
  transition: filter var(--transition-normal);
}

.spoiler-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--color-primary-brown);
  background-color: rgba(248, 243, 220, 0.85);
  border-radius: var(--radius-md);
}

.spoiler.revealed .spoiler-content {
  filter: none;
}

.spoiler.revealed .spoiler-overlay {
  display: none;
}

/* --------------------------------------------------------------------------
   INTERACTIVE QUIZ CARD
   -------------------------------------------------------------------------- */
.quiz-card {
  background-color: var(--color-surface-white);
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-md);
}

.quiz-header {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary-brown);
  margin-bottom: 1rem;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.quiz-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.quiz-option:hover {
  border-color: var(--color-accent-orange);
  background-color: var(--color-surface-card-hover);
}

.quiz-option.selected {
  border-color: var(--color-primary-brown);
  background-color: var(--color-primary-brown);
  color: var(--color-text-inverse);
  font-weight: 600;
}

.quiz-feedback {
  display: none;
  padding: 1rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
}

.quiz-feedback.correct {
  display: block;
  background-color: var(--color-tip-bg);
  border: 1px solid var(--color-tip-border);
  color: var(--color-tip-text);
}

.quiz-feedback.incorrect {
  display: block;
  background-color: var(--color-danger-bg);
  border: 1px solid var(--color-danger-border);
  color: var(--color-danger-text);
}

/* --------------------------------------------------------------------------
   LEARNING BLOCKS (Objective, Prerequisites, Recap, Takeaways)
   -------------------------------------------------------------------------- */
.learning-block {
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 2rem 0;
}

.learning-objective-box {
  background-color: var(--color-note-bg);
  border: 2px solid var(--color-note-border);
}

.prerequisites-box {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border-strong);
}

.exercise-box {
  background-color: var(--color-bestpractice-bg);
  border: 2px solid var(--color-bestpractice-border);
}

.mini-challenge-box {
  background-color: var(--color-transwave-bg);
  border: 2px solid var(--color-transwave-border);
}

.summary-card {
  background-color: var(--color-surface-card);
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-top: 3rem;
}

/* --------------------------------------------------------------------------
   COMPARISON MATRIX TABLES
   -------------------------------------------------------------------------- */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  background-color: var(--color-surface-white);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.comparison-table th {
  background-color: var(--color-surface-card);
  color: var(--color-primary-brown);
  font-weight: 700;
  padding: 0.85rem 1rem;
  border-bottom: 2px solid var(--color-border-strong);
  white-space: nowrap;
}

.comparison-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-text-main);
  vertical-align: top;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:nth-child(even) {
  background-color: rgba(248, 243, 220, 0.4);
}

/* --------------------------------------------------------------------------
   SEARCH MODAL UI
   -------------------------------------------------------------------------- */
.search-modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(56, 36, 13, 0.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  align-items: flex-start;
  justify-content: center;
  padding-top: 10vh;
}

.search-modal-backdrop.active {
  display: flex;
}

.search-modal {
  width: 90%;
  max-width: 640px;
  background-color: var(--color-warm-bg);
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalSlideDown 0.2s ease-out;
}

@keyframes modalSlideDown {
  from { opacity: 0; transform: translateY(-16px); }
  to { opacity: 1; transform: translateY(0); }
}

.search-modal-header {
  display: flex;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border-strong);
  gap: 0.75rem;
  background-color: var(--color-surface-white);
}

.search-modal-input {
  flex: 1;
  border: none;
  outline: none;
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--color-dark-brown);
  background: transparent;
}

.search-modal-results {
  max-height: 380px;
  overflow-y: auto;
  padding: 0.75rem;
}

.search-result-item {
  display: flex;
  flex-direction: column;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 0.4rem;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.search-result-item:hover {
  background-color: var(--color-surface-card-hover);
}

.search-result-title {
  font-weight: 700;
  color: var(--color-primary-brown);
  font-size: 0.95rem;
}

.search-result-snippet {
  font-size: 0.825rem;
  color: var(--color-text-muted);
  margin-top: 0.2rem;
}