/* LLM Midterm Revision Portal - Retro Neubrutalism Styling System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Outfit:wght@500;600;700;800;900&family=Kanit:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Retro Neubrutalism Color Palette */
  --bg-primary: #FBF5ED;
  --bg-card: #ffffff;
  --bg-card-alt: #F7EEDF;
  --border-color: #311E15;
  --text-primary: #311E15;
  --text-secondary: #5C4335;
  --text-muted: #826A5C;

  /* Accent Colors */
  --coral-orange: #FF8A7A;
  --muted-blue: #6EC6E5;
  --warm-yellow: #F2A93B;
  --retro-green: #84FAB0;
  --retro-red: #FF8A7A;

  /* Font Families */
  --font-heading: 'Outfit', 'Kanit', 'Inter', sans-serif;
  --font-body: 'Inter', 'Kanit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Neubrutalism Style Properties */
  --neub-border-width: 3px;
  --neub-border: var(--neub-border-width) solid var(--border-color);
  --neub-shadow: 5px 5px 0px var(--border-color);
  --neub-shadow-hover: 8px 8px 0px var(--border-color);
  --neub-shadow-active: 2px 2px 0px var(--border-color);
  --neub-shadow-sm: 3px 3px 0px var(--border-color);
}

/* ==========================================
   Base & Layout Reset
   ========================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  padding-bottom: 3rem;
}

code, pre {
  font-family: var(--font-mono);
}

/* ==========================================
   Header & App Branding
   ========================================== */
header {
  border-bottom: var(--neub-border);
  background: var(--bg-primary);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0.5rem 0;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.8rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo-section h1 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-section span {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  padding: 0.15rem 0.5rem;
  border-radius: 6px;
  background: var(--warm-yellow);
  box-shadow: 2px 2px 0px var(--border-color);
}

nav.main-nav {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.tab-btn {
  background: transparent;
  border: 2px solid transparent;
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 0.6rem 1.1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(49, 30, 21, 0.05);
  border-color: var(--border-color);
}

.tab-btn.active {
  color: var(--text-primary);
  background: var(--coral-orange);
  border: var(--neub-border);
  box-shadow: var(--neub-shadow-sm);
}

/* ==========================================
   Main Containers & Cards
   ========================================== */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
}

.tab-content {
  display: none;
  animation: fadeIn 0.3s ease-out;
}

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

.card {
  background: var(--bg-card);
  border: var(--neub-border);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: var(--neub-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  margin-bottom: 2rem;
}

.card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--neub-shadow-hover);
}

h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--text-primary);
}

/* ==========================================
   1. Dashboard Styling
   ========================================== */

.intro-card {
  background: var(--bg-card);
}

.intro-card p {
  margin: 1rem 0;
  color: var(--text-secondary);
}

.syllabus-summary h3 {
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  border-bottom: 2px dashed var(--border-color);
  padding-bottom: 0.5rem;
}

.block-row {
  display: flex;
  margin-bottom: 1.5rem;
  gap: 1.5rem;
  align-items: flex-start;
}

.block-tag {
  background: var(--muted-blue);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  box-shadow: 2px 2px 0px var(--border-color);
  font-weight: 800;
  font-size: 0.8rem;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  white-space: nowrap;
}

.block-info h4 {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
}

.block-info p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.quick-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.stat-item {
  background: var(--bg-card-alt);
  border: var(--neub-border);
  border-radius: 12px;
  padding: 1.25rem;
  text-align: center;
  box-shadow: var(--neub-shadow-sm);
}

.stat-val {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--text-primary);
  font-family: var(--font-heading);
}

.stat-lbl {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 0.25rem;
  font-weight: 700;
}

/* ==========================================
   2. Study Summaries (Lecture Cards Accordion)
   ========================================== */
.lecture-card {
  padding: 0;
  overflow: hidden;
}

.lecture-header {
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  background: var(--bg-card-alt);
  transition: background 0.2s;
  border-bottom: var(--neub-border-width) solid transparent;
}

.lecture-card.expanded .lecture-header {
  border-bottom-color: var(--border-color);
}

.lecture-header:hover {
  background: rgba(49, 30, 21, 0.05);
}

.lecture-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.block-badge {
  background: var(--muted-blue);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  box-shadow: 2px 2px 0px var(--border-color);
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 800;
}

.lecture-header h3 {
  font-size: 1.25rem;
}

.chevron-icon {
  transition: transform 0.2s;
  color: var(--text-primary);
}

.lecture-card.expanded .chevron-icon {
  transform: rotate(180deg);
}

.lecture-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0, 1, 0, 1);
  padding: 0 2rem;
  background: var(--bg-card);
}

.lecture-card.expanded .lecture-body {
  max-height: 2000px;
  padding: 2rem;
}

.terms-section {
  margin-bottom: 2rem;
}

.terms-section h4, .outcomes-section h4 {
  font-size: 1rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  border-left: 4px solid var(--coral-orange);
  padding-left: 0.5rem;
}

.term-tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.term-tag {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  box-shadow: var(--neub-shadow-sm);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-primary);
  font-weight: 700;
}

.outcome-row {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  background: var(--bg-card-alt);
  border: var(--neub-border);
  border-radius: 12px;
  padding: 1.25rem;
}

.outcome-badge {
  font-family: var(--font-mono);
  background: var(--coral-orange);
  border: 2px solid var(--border-color);
  box-shadow: 2px 2px 0px var(--border-color);
  color: var(--text-primary);
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 800;
  height: fit-content;
}

.outcome-desc {
  font-weight: 800;
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.outcome-explanation {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.outcome-explanation code {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--text-primary);
  font-weight: 700;
}

/* ==========================================
   3. Flashcards Section
   ========================================== */
.flashcards-header-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.select-wrapper select {
  background: var(--bg-card);
  border: var(--neub-border);
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  padding: 0.5rem 2rem 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  outline: none;
  font-size: 0.95rem;
  box-shadow: var(--neub-shadow-sm);
}

.flashcard-progress-container {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.progress-bar-outer {
  background: var(--bg-card-alt);
  border: 2px solid var(--border-color);
  width: 200px;
  height: 12px;
  border-radius: 10px;
  overflow: hidden;
}

.progress-bar-fill {
  background: var(--warm-yellow);
  border-right: 2px solid var(--border-color);
  height: 100%;
  width: 0;
  transition: width 0.4s ease;
}

.flashcard-wrapper {
  perspective: 1000px;
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

.flashcard-render-area {
  width: 100%;
  height: 320px;
  cursor: pointer;
}

.flashcard-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
}

.flashcard-inner.flipped {
  transform: rotateY(180deg);
}

.flashcard-front, .flashcard-back {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  border: var(--neub-border);
  border-radius: 20px;
  padding: 3rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  box-shadow: var(--neub-shadow);
}

.flashcard-front {
  background: var(--bg-card);
}

.flashcard-back {
  background: var(--bg-card-alt);
  transform: rotateY(180deg);
}

.card-category {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 800;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}

.card-term {
  font-size: 2rem;
  font-weight: 900;
  font-family: var(--font-heading);
  color: var(--text-primary);
  margin-bottom: 2rem;
}

.card-definition {
  font-size: 1.15rem;
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.6;
}

.flip-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: auto;
  font-weight: 700;
}

.flashcard-nav-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
}

.ctrl-btn {
  background: var(--bg-card);
  border: var(--neub-border);
  color: var(--text-primary);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.1s;
  box-shadow: var(--neub-shadow-sm);
}

.ctrl-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--neub-shadow);
}

.ctrl-btn:active {
  transform: translate(1px, 1px);
  box-shadow: var(--neub-shadow-active);
}

.badge-btn {
  background: var(--bg-card);
  border: var(--neub-border);
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 800;
  padding: 0.75rem 1.5rem;
  border-radius: 30px;
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: var(--neub-shadow-sm);
}

.badge-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--neub-shadow);
}

.badge-btn.active {
  background: var(--retro-green);
}

.card-index {
  font-family: var(--font-mono);
  color: var(--text-secondary);
  font-weight: 700;
}

/* ==========================================
   4. Quizzes Section
   ========================================== */
.quiz-item {
  margin-bottom: 2rem;
}

.quiz-header {
  border-bottom: 2px dashed var(--border-color);
  padding-bottom: 0.75rem;
  margin-bottom: 1.25rem;
}

.quiz-number {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.85rem;
  text-transform: uppercase;
}

.quiz-question-text {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
}

.quiz-options-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.quiz-option {
  background: var(--bg-card);
  border: var(--neub-border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: var(--neub-shadow-sm);
  color: var(--text-primary);
  font-weight: 700;
}

.quiz-option:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--neub-shadow);
}

.radio-circle {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  background: var(--bg-card);
  flex-shrink: 0;
  position: relative;
  transition: all 0.15s;
}

.quiz-option.selected {
  background: var(--muted-blue);
}

.quiz-option.selected .radio-circle::after {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-color);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.quiz-option.correct {
  background: var(--retro-green) !important;
  color: var(--text-primary);
}

.quiz-option.correct .radio-circle {
  background: var(--bg-card);
}

.quiz-option.correct .radio-circle::after {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-color);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.quiz-option.incorrect {
  background: var(--retro-red) !important;
  color: var(--text-primary);
}

.quiz-option.incorrect .radio-circle {
  background: var(--bg-card);
}

.explanation-box {
  margin-top: 1.5rem;
  border-radius: 12px;
  padding: 1.25rem;
  border: var(--neub-border);
  box-shadow: var(--neub-shadow-sm);
}

.explanation-box.correct {
  background: rgba(132, 250, 176, 0.2);
}

.explanation-box.incorrect {
  background: rgba(255, 138, 122, 0.2);
}

.explanation-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.explanation-box p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.quiz-footer-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.quiz-score-display {
  font-size: 1.2rem;
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 800;
}

/* Neubrutalism Buttons */
.primary-btn {
  background: var(--warm-yellow);
  border: var(--neub-border);
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1rem;
  padding: 0.8rem 1.8rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.1s;
  box-shadow: var(--neub-shadow-sm);
}

.primary-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--neub-shadow);
}

.primary-btn:active {
  transform: translate(1px, 1px);
  box-shadow: var(--neub-shadow-active);
}

.secondary-btn {
  background: var(--bg-card);
  border: var(--neub-border);
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1rem;
  padding: 0.8rem 1.8rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.1s;
  box-shadow: var(--neub-shadow-sm);
}

.secondary-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--neub-shadow);
}

.secondary-btn:active {
  transform: translate(1px, 1px);
  box-shadow: var(--neub-shadow-active);
}

.warning-btn {
  background: var(--coral-orange);
  border: var(--neub-border);
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1rem;
  padding: 0.8rem 1.8rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.1s;
  box-shadow: var(--neub-shadow-sm);
}

.warning-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--neub-shadow);
}

.warning-btn:active {
  transform: translate(1px, 1px);
  box-shadow: var(--neub-shadow-active);
}

/* ==========================================
   5. Interactive Toy RAG Simulator
   ========================================== */
.stepper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  background: var(--bg-card-alt);
  border: var(--neub-border);
  border-radius: 12px;
  padding: 1.25rem;
  overflow-x: auto;
  gap: 0.5rem;
  box-shadow: var(--neub-shadow-sm);
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  opacity: 0.6;
  transition: all 0.15s;
  min-width: 80px;
}

.step-item:hover, .step-item.active {
  opacity: 1;
}

.step-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.step-item.active .step-icon {
  background: var(--warm-yellow);
  box-shadow: 2px 2px 0px var(--border-color);
}

.step-item.completed .step-icon {
  background: var(--retro-green);
}

.step-label {
  font-size: 0.75rem;
  font-weight: 800;
  text-align: center;
  white-space: nowrap;
  color: var(--text-primary);
}

.step-divider {
  flex-grow: 1;
  height: 2px;
  background: var(--border-color);
  min-width: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.form-group.half {
  flex: 1;
}

.params-row {
  display: flex;
  gap: 1.5rem;
}

@media (max-width: 576px) {
  .params-row {
    flex-direction: column;
    gap: 0;
  }
}

.form-group label {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--text-primary);
}

.form-group input[type="text"], .form-group input[type="number"] {
  background: #ffffff;
  border: var(--neub-border);
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 1rem;
  outline: none;
  font-weight: 600;
  box-shadow: var(--neub-shadow-sm);
  transition: all 0.15s;
}

.form-group input[type="text"]:focus, .form-group input[type="number"]:focus {
  transform: translate(-1px, -1px);
  box-shadow: var(--neub-shadow);
}

.presets-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  align-items: center;
}

.preset-label {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 700;
}

.preset-btn {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.3rem 0.7rem;
  border-radius: 20px;
  cursor: pointer;
  box-shadow: var(--neub-shadow-sm);
  transition: all 0.15s;
}

.preset-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--neub-shadow);
}

.kb-display-box h3 {
  margin-bottom: 1rem;
}

.kb-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

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

.kb-item {
  background: var(--bg-card-alt);
  border: var(--neub-border);
  border-radius: 10px;
  padding: 1.25rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  box-shadow: var(--neub-shadow-sm);
}

.kb-id-badge {
  font-family: var(--font-mono);
  background: var(--warm-yellow);
  border: 2px solid var(--border-color);
  box-shadow: 2px 2px 0px var(--border-color);
  color: var(--text-primary);
  font-size: 0.75rem;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-weight: 800;
}

.kb-item p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* RAG Stepper Cards Content */
.step-card h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.step-card p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.section-box {
  background: var(--bg-card-alt);
  border: var(--neub-border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.section-box h4 {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  font-weight: 800;
}

.token-badge-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.token-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  border: 2px solid var(--border-color);
  font-weight: 700;
}

.token-badge.query {
  background: var(--muted-blue);
  color: var(--text-primary);
}

.token-badge.doc {
  background: var(--coral-orange);
  color: var(--text-primary);
}

.token-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.5rem 0;
  border-bottom: 2px dashed var(--border-color);
}

.token-row:last-child {
  border-bottom: none;
}

.vocab-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  max-height: 180px;
  overflow-y: auto;
}

.vocab-word {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: var(--text-primary);
  font-weight: 600;
}

.vector-value {
  display: block;
  font-size: 1.1rem;
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  background: #ffffff;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  word-break: break-all;
}

.vector-value.highlighted {
  background: var(--bg-card-alt);
}

.vector-row-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 0.75rem;
}

.vector-row-item:last-child {
  margin-bottom: 0;
}

/* Cosine similarity math boxes */
.calcs-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.calc-row {
  margin-bottom: 0;
  padding: 1.5rem;
  border: var(--neub-border);
}

.calc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px dashed var(--border-color);
  padding-bottom: 0.5rem;
  margin-bottom: 0.75rem;
}

.calc-score {
  font-family: var(--font-heading);
  font-weight: 800;
}

.calc-score strong {
  color: var(--text-primary);
  background: var(--warm-yellow);
  padding: 0.1rem 0.4rem;
  border: 2px solid var(--border-color);
  border-radius: 4px;
}

.math-line {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  padding: 0.25rem 0;
  color: var(--text-secondary);
  flex-wrap: wrap;
  font-weight: 600;
}

.math-line span {
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.math-line strong.match {
  color: var(--text-primary);
  background: var(--coral-orange);
  padding: 0 0.2rem;
  border-radius: 2px;
}

.math-line.result {
  border-top: 2px dashed var(--border-color);
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  font-size: 1.05rem;
  color: var(--text-primary);
}

.math-line.result span {
  background: var(--retro-green);
  padding: 0 0.4rem;
  border: 2px solid var(--border-color);
  border-radius: 4px;
}

/* Ranking table */
.ranking-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  border: var(--neub-border);
}

.ranking-table th, .ranking-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 2px solid var(--border-color);
  font-weight: 600;
}

.ranking-table th {
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--text-primary);
  font-size: 0.85rem;
  text-transform: uppercase;
  background: var(--bg-card-alt);
}

.ranking-table tr.retrieved {
  background: rgba(132, 250, 176, 0.15);
}

.status-badge {
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  border: 2px solid var(--border-color);
}

.status-badge.retrieved {
  background: var(--retro-green);
  color: var(--text-primary);
}

.status-badge.discarded {
  background: var(--retro-red);
  color: var(--text-primary);
}

.text-truncate {
  max-width: 300px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Prompt preview */
.prompt-preview-box {
  background: #ffffff;
  border: var(--neub-border);
  border-radius: 8px;
  padding: 1.5rem;
  max-height: 400px;
  overflow-y: auto;
  box-shadow: var(--neub-shadow-sm);
}

.prompt-preview-box pre {
  margin: 0;
  white-space: pre-wrap;
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 600;
}

/* Stream visualizer box */
.llm-stream-outer {
  background: #ffffff;
  border: var(--neub-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--neub-shadow);
}

.llm-stream-header {
  background: var(--bg-card-alt);
  border-bottom: var(--neub-border);
  padding: 0.75rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.assistant-label {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.stream-status {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 700;
}

.llm-stream-output {
  padding: 2rem;
  font-size: 1.2rem;
  line-height: 1.7;
  min-height: 150px;
  color: var(--text-primary);
  font-weight: 700;
}

.citation-highlight {
  background: var(--warm-yellow);
  border: 2px solid var(--border-color);
  color: var(--text-primary);
  font-weight: 800;
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
  display: inline-block;
}

.nav-row {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
}

/* ==========================================
   6. SSE Visualizer
   ========================================== */
.sse-controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}


.sse-panel {
  background: var(--bg-card-alt);
  border: var(--neub-border);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  height: 400px;
  box-shadow: var(--neub-shadow);
}

.sse-panel h4 {
  font-size: 0.95rem;
  color: var(--text-primary);
  text-transform: uppercase;
  margin-bottom: 1rem;
  border-bottom: 2px dashed var(--border-color);
  padding-bottom: 0.5rem;
}

.sse-stream-packets-container, .sse-buffer-container, .sse-output-container {
  flex-grow: 1;
  overflow-y: auto;
}

.stream-packet-box {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: 6px;
  padding: 0.6rem 0.8rem;
  margin-bottom: 0.6rem;
  animation: slideDown 0.3s ease-out;
  box-shadow: var(--neub-shadow-sm);
}

.packet-text {
  color: var(--text-primary);
  font-size: 0.82rem;
  font-weight: 700;
}

.buffer-val {
  font-size: 0.9rem;
  color: var(--text-primary);
  white-space: pre-wrap;
  font-weight: 700;
}

.sse-parsed-tokens {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-content: flex-start;
  height: 100%;
}

.sse-token {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  border: 2px solid var(--border-color);
  font-weight: 700;
}

.sse-token.text {
  background: var(--muted-blue);
  color: var(--text-primary);
}

.sse-token.meta {
  background: var(--retro-green);
  color: var(--text-primary);
}

.sse-token.error {
  background: var(--retro-red);
  color: var(--text-primary);
}

.empty-message {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
  margin-top: 2rem;
  font-weight: 700;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================
   7. Slides Explorer Layout
   ========================================== */

.slides-sidebar {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.slide-select-btn {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.8rem 1.2rem;
  border-radius: 8px;
  cursor: pointer;
  text-align: left;
  transition: all 0.15s;
  box-shadow: var(--neub-shadow-sm);
}

.slide-select-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--neub-shadow);
  color: var(--text-primary);
}

.slide-select-btn.active {
  background: var(--coral-orange);
  color: var(--text-primary);
  border-color: var(--border-color);
  box-shadow: var(--neub-shadow-sm);
}

.slide-viewer-pane {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.slide-pane-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px dashed var(--border-color);
  padding-bottom: 1rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.slide-pdf-container {
  border: var(--neub-border);
  box-shadow: var(--neub-shadow);
  border-radius: 12px;
  overflow: hidden;
  background: #ffffff;
  height: 600px;
}

.pdf-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--muted-blue);
  color: var(--text-primary);
  border: var(--neub-border);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.95rem;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.1s;
  box-shadow: var(--neub-shadow-sm);
}

.pdf-link-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--neub-shadow);
}

.pdf-link-btn:active {
  transform: translate(1px, 1px);
  box-shadow: var(--neub-shadow-active);
}