/**
 * DMR Earthmoving Training Specialists (Zimbabwe)
 * DMR Excavator Academy - Phase 1 Stylesheet
 * 
 * Aesthetic: Modern Education + Industrial Engineering + Technical Precision
 * Palette: Pure White, Warm Off-White (#F8FAFC), Slate Grey (#E2E8F0), 
 *          Industrial Charcoal (#0F172A), DMR Safety Yellow (#F59E0B)
 */

:root {
  /* Core Industrial Palette */
  --dmr-yellow: #F59E0B;
  --dmr-yellow-hover: #D97706;
  --dmr-yellow-light: #FEF3C7;
  --dmr-yellow-border: #FBBF24;
  --dmr-yellow-subtle: #FFFBEB;
  
  --dmr-black: #0F172A;
  --dmr-charcoal: #1E293B;
  --dmr-slate: #334155;
  --dmr-muted: #64748B;
  --dmr-border: #E2E8F0;
  --dmr-border-dark: #CBD5E1;
  --dmr-bg: #F8FAFC;
  --dmr-card-bg: #FFFFFF;
  
  /* Semantic */
  --dmr-success: #16A34A;
  --dmr-success-light: #DCFCE7;
  --dmr-danger: #DC2626;
  --dmr-danger-light: #FEE2E2;
  --dmr-info: #0284C7;
  --dmr-info-light: #E0F2FE;

  /* Typography */
  --font-display: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;

  /* Spacing & Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.12);
}

/* Reset & Universal Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--dmr-bg);
  color: var(--dmr-black);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Hazard Safety Strip */
.hazard-strip {
  height: 6px;
  width: 100%;
  background: repeating-linear-gradient(
    -45deg,
    var(--dmr-yellow),
    var(--dmr-yellow) 14px,
    var(--dmr-black) 14px,
    var(--dmr-black) 28px
  );
}

/* Header */
.dmr-header {
  background-color: var(--dmr-black);
  color: #FFFFFF;
  padding: 12px 20px;
  border-bottom: 2px solid var(--dmr-yellow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-badge {
  background-color: var(--dmr-yellow);
  color: var(--dmr-black);
  font-weight: 900;
  font-size: 1.25rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 0.72rem;
  color: #94A3B8;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.btn-whatsapp-header {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: #25D366;
  color: #FFFFFF;
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: background-color 0.15s ease;
  white-space: nowrap;
  min-height: 40px;
}

.btn-whatsapp-header:hover {
  background-color: #1EBE5D;
}

/* Main Content Layout */
.main-content {
  flex: 1;
  width: 100%;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
}

/* Section Headings */
.section-heading-block {
  margin-bottom: 28px;
}

.section-eyebrow {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--dmr-yellow-hover);
  text-transform: uppercase;
  margin-bottom: 4px;
  font-family: var(--font-mono);
}

.section-title {
  font-size: 1.75rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  color: var(--dmr-black);
  line-height: 1.2;
}

.section-description {
  font-size: 0.95rem;
  color: var(--dmr-muted);
  max-width: 720px;
  margin-top: 6px;
}

/* ===================================================
   1. HERO SECTION
   =================================================== */
.hero-section {
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  border-bottom: 1px solid var(--dmr-border);
  padding: 32px 20px 48px;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
}

.hero-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--dmr-yellow-light);
  border: 1px solid var(--dmr-yellow);
  color: #92400E;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background-color: #D97706;
  border-radius: 50%;
  animation: pulse-dot 1.8s infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
}

.hero-meta-tag {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--dmr-muted);
  background-color: #FFFFFF;
  border: 1px solid var(--dmr-border);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.hero-headline {
  font-size: 2.25rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  line-height: 1.15;
  color: var(--dmr-black);
  margin-bottom: 12px;
}

.headline-accent {
  color: var(--dmr-yellow-hover);
  display: inline-block;
}

.hero-subtext {
  font-size: 1.1rem;
  color: var(--dmr-slate);
  max-width: 760px;
  line-height: 1.5;
  margin-bottom: 28px;
}

/* Excavator Visual Card */
.excavator-hero-visual-card {
  background-color: #FFFFFF;
  border: 1px solid var(--dmr-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 20px;
  margin-bottom: 28px;
  overflow: hidden;
}

.visual-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--dmr-border);
  margin-bottom: 16px;
}

.tech-spec-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--dmr-black);
  font-family: var(--font-mono);
}

.spec-code {
  color: #B45309;
}

.spec-divider {
  color: var(--dmr-muted);
}

.visual-hint {
  font-size: 0.75rem;
  color: var(--dmr-muted);
  font-style: italic;
}

/* Excavator SVG Stage */
.excavator-svg-wrapper {
  width: 100%;
  max-height: 480px;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.excavator-svg {
  width: 100%;
  height: auto;
  max-height: 480px;
  display: block;
}

/* Hotspot Pins inside SVG */
.svg-hotspot-pin {
  cursor: pointer;
  transition: transform 0.2s ease;
  outline: none;
}

.svg-hotspot-pin:hover,
.svg-hotspot-pin:focus-visible {
  transform: scale(1.08);
}

.hotspot-pulse {
  animation: pulse-ring 2.2s infinite ease-out;
  transform-origin: center;
}

@keyframes pulse-ring {
  0% { transform: scale(0.8); opacity: 0.9; }
  70% { transform: scale(1.6); opacity: 0; }
  100% { transform: scale(1.6); opacity: 0; }
}

.machine-part-group {
  transition: opacity 0.2s ease, filter 0.2s ease;
}

.machine-part-group.active-highlight {
  filter: drop-shadow(0 0 6px #F59E0B);
}

/* Quick Chips below graphic */
.hotspot-quick-chips {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--dmr-border);
}

.chips-label {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--dmr-muted);
  text-transform: uppercase;
  margin-right: 4px;
}

.part-chip {
  background-color: var(--dmr-bg);
  border: 1px solid var(--dmr-border);
  color: var(--dmr-black);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 36px;
}

.part-chip:hover {
  background-color: #FFFFFF;
  border-color: var(--dmr-yellow);
}

.part-chip.active {
  background-color: var(--dmr-black);
  border-color: var(--dmr-black);
  color: var(--dmr-yellow);
}

/* Hero Actions & Progress Metric Row */
.hero-actions-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.cta-buttons-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-primary-cta {
  background-color: var(--dmr-yellow);
  color: var(--dmr-black);
  font-weight: 900;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--dmr-yellow-hover);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
  box-shadow: var(--shadow-sm);
  min-height: 48px;
}

.btn-primary-cta:hover {
  background-color: var(--dmr-yellow-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary-cta {
  background-color: #FFFFFF;
  color: var(--dmr-black);
  font-weight: 800;
  font-size: 0.95rem;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--dmr-black);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
  min-height: 48px;
}

.btn-secondary-cta:hover {
  background-color: var(--dmr-black);
  color: #FFFFFF;
}

.hero-progress-pill {
  background-color: #FFFFFF;
  border: 1.5px solid var(--dmr-border);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.pill-label {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--dmr-muted);
  text-transform: uppercase;
}

.pill-metric-row {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.pill-pct {
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--dmr-black);
}

.pill-divider {
  color: var(--dmr-muted);
}

.pill-total {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--dmr-muted);
}

/* ===================================================
   2. EXPLORE THE EXCAVATOR (ANATOMY SECTION)
   =================================================== */
.explore-section {
  background-color: #FFFFFF;
  border-bottom: 1px solid var(--dmr-border);
}

.component-detail-card {
  background-color: var(--dmr-bg);
  border: 1.5px solid var(--dmr-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.component-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--dmr-border);
  margin-bottom: 20px;
}

.component-title-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.component-num-badge {
  background-color: var(--dmr-black);
  color: var(--dmr-yellow);
  font-size: 1.15rem;
  font-weight: 900;
  font-family: var(--font-mono);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
}

.component-title {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--dmr-black);
  letter-spacing: 0.5px;
}

.component-subtitle {
  font-size: 0.85rem;
  color: var(--dmr-muted);
  font-weight: 600;
}

.component-status-tag {
  background-color: var(--dmr-yellow-light);
  border: 1px solid var(--dmr-yellow);
  color: #92400E;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
}

.component-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.info-block {
  background-color: #FFFFFF;
  border: 1px solid var(--dmr-border);
  border-radius: var(--radius-sm);
  padding: 16px;
}

.info-block-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.info-title {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--dmr-black);
}

.info-text {
  font-size: 0.9rem;
  color: var(--dmr-slate);
  line-height: 1.55;
}

/* Operator Memory Rule Box */
.operator-rule-box {
  background-color: #FEF3C7;
  border: 1.5px solid #F59E0B;
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-bottom: 20px;
}

.rule-badge {
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.5px;
  color: #92400E;
  margin-bottom: 4px;
}

.rule-formula {
  display: block;
  font-size: 1.05rem;
  font-weight: 900;
  color: #78350F;
  margin-bottom: 4px;
}

.rule-explanation {
  font-size: 0.88rem;
  color: #92400E;
  line-height: 1.5;
}

.component-nav-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-top: 12px;
}

.btn-nav-part {
  background-color: #FFFFFF;
  border: 1px solid var(--dmr-border);
  color: var(--dmr-black);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 44px;
}

.btn-nav-part:hover {
  border-color: var(--dmr-yellow-hover);
  background-color: var(--dmr-yellow-subtle);
}

.part-indicator-dots {
  display: flex;
  gap: 6px;
}

.part-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--dmr-border-dark);
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.part-dot.active {
  background-color: var(--dmr-yellow-hover);
  transform: scale(1.2);
}

/* ===================================================
   3. PROGRESS SECTION
   =================================================== */
.journey-banner-section {
  background-color: var(--dmr-bg);
  border-bottom: 1px solid var(--dmr-border);
}

.journey-card {
  background-color: #FFFFFF;
  border: 1px solid var(--dmr-border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.journey-top-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}

.journey-eyebrow {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--dmr-yellow-hover);
  font-family: var(--font-mono);
  margin-bottom: 2px;
}

.journey-title {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--dmr-black);
}

.journey-subtext {
  font-size: 0.88rem;
  color: var(--dmr-muted);
  max-width: 600px;
}

.journey-metric-block {
  text-align: right;
}

.journey-stat-value {
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--dmr-black);
  line-height: 1;
}

.journey-stat-label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--dmr-muted);
  margin-top: 4px;
}

.progress-bar-track {
  width: 100%;
  height: 12px;
  background-color: var(--dmr-bg);
  border: 1px solid var(--dmr-border);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 16px;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--dmr-yellow), var(--dmr-yellow-hover));
  transition: width 0.4s ease;
}

.journey-milestones-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}

.milestone-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.74rem;
  color: var(--dmr-muted);
  font-weight: 600;
  background-color: var(--dmr-bg);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--dmr-border);
}

.milestone-badge.completed {
  color: var(--dmr-success);
  border-color: var(--dmr-success);
  background-color: var(--dmr-success-light);
}

.m-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--dmr-border-dark);
}

.milestone-badge.completed .m-dot {
  background-color: var(--dmr-success);
}

.journey-actions-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--dmr-border);
}

.storage-notice {
  font-size: 0.78rem;
  color: var(--dmr-muted);
}

.btn-reset-progress {
  background: none;
  border: none;
  color: var(--dmr-muted);
  font-size: 0.75rem;
  font-weight: 700;
  text-decoration: underline;
  cursor: pointer;
  padding: 4px 8px;
}

.btn-reset-progress:hover {
  color: var(--dmr-danger);
}

/* ===================================================
   4. CURRICULUM: 12 LESSONS GRID
   =================================================== */
.curriculum-section {
  background-color: #FFFFFF;
  border-bottom: 1px solid var(--dmr-border);
}

.lessons-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.lesson-card {
  background-color: #FFFFFF;
  border: 1.5px solid var(--dmr-border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
  text-align: left;
  outline: none;
}

.lesson-card:hover {
  border-color: var(--dmr-yellow);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.lesson-card:focus-visible {
  border-color: var(--dmr-yellow-hover);
  box-shadow: 0 0 0 3px var(--dmr-yellow-light);
}

.lesson-card.completed {
  border-color: #86EFAC;
  background-color: #F0FDF4;
}

.lesson-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.lesson-num-tag {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 800;
  color: var(--dmr-black);
  background-color: var(--dmr-yellow-light);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.lesson-status-tag {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.status-available {
  background-color: #F1F5F9;
  color: var(--dmr-slate);
}

.status-completed {
  background-color: var(--dmr-success-light);
  color: var(--dmr-success);
}

.lesson-card-title {
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--dmr-black);
  line-height: 1.3;
  margin-bottom: 6px;
}

.lesson-card-summary {
  font-size: 0.86rem;
  color: var(--dmr-slate);
  line-height: 1.5;
  margin-bottom: 14px;
}

.lesson-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 10px;
  border-top: 1px solid var(--dmr-border);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--dmr-muted);
}

.card-cta-link {
  color: var(--dmr-yellow-hover);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ===================================================
   5. LESSON VIEWER MODAL / READER OVERLAY
   =================================================== */
.lesson-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  justify-content: center;
  align-items: flex-end;
}

.lesson-modal-overlay.open {
  display: flex;
}

.lesson-modal-sheet {
  background-color: #FFFFFF;
  width: 100%;
  max-width: 860px;
  height: 92vh;
  border-radius: 16px 16px 0 0;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: slide-up 0.25s ease-out;
}

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

.modal-header-bar {
  background-color: var(--dmr-black);
  color: #FFFFFF;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--dmr-yellow);
}

.modal-lesson-code {
  font-size: 0.74rem;
  font-family: var(--font-mono);
  font-weight: 800;
  color: var(--dmr-yellow);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.modal-lesson-title {
  font-size: 1.25rem;
  font-weight: 900;
  color: #FFFFFF;
  line-height: 1.2;
}

.btn-close-modal {
  background: #334155;
  border: none;
  color: #FFFFFF;
  font-size: 1.1rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.15s ease;
}

.btn-close-modal:hover {
  background-color: var(--dmr-danger);
}

.modal-body-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.modal-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--dmr-muted);
}

.modal-status-pill {
  background-color: var(--dmr-yellow-light);
  color: #92400E;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.modal-section-box {
  background-color: var(--dmr-bg);
  border: 1px solid var(--dmr-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.modal-subheading {
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.5px;
  color: var(--dmr-black);
  margin-bottom: 10px;
  text-transform: uppercase;
}

.modal-intro-text {
  font-size: 1rem;
  color: var(--dmr-slate);
  line-height: 1.6;
}

/* Visual Box inside Modal */
.visual-box {
  background-color: #FFFFFF;
}

.visual-box-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--dmr-black);
  margin-bottom: 12px;
}

.visual-box-content {
  width: 100%;
  min-height: 160px;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--dmr-bg);
  border: 1px dashed var(--dmr-border-dark);
  border-radius: var(--radius-sm);
  padding: 16px;
  overflow: hidden;
}

.visual-caption {
  font-size: 0.8rem;
  color: var(--dmr-muted);
  font-style: italic;
  margin-top: 8px;
  text-align: center;
}

/* Key Points List */
.key-points-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.key-points-list li {
  font-size: 0.92rem;
  color: var(--dmr-slate);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}

.key-points-list li::before {
  content: '■';
  color: var(--dmr-yellow-hover);
  font-size: 0.8rem;
  margin-top: 2px;
}

/* Micro-Learning Components Grid */
.micro-learning-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.micro-card {
  border-radius: var(--radius-md);
  padding: 16px;
  border: 1.5px solid var(--dmr-border);
  background-color: #FFFFFF;
}

.micro-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.micro-label {
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.quick-check-card {
  border-color: #BAE6FD;
  background-color: #F0F9FF;
}

.quick-check-card .micro-label {
  color: #0369A1;
}

.micro-question {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--dmr-black);
  margin-bottom: 12px;
}

.micro-qc-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.qc-btn-option {
  background-color: #FFFFFF;
  border: 1px solid #BAE6FD;
  color: var(--dmr-black);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: all 0.15s ease;
  min-height: 44px;
}

.qc-btn-option:hover {
  background-color: #E0F2FE;
  border-color: #0284C7;
}

.qc-btn-option.correct {
  background-color: #DCFCE7;
  border-color: #16A34A;
  color: #14532D;
  font-weight: 800;
}

.qc-btn-option.wrong {
  background-color: #FEE2E2;
  border-color: #DC2626;
  color: #7F1D1D;
}

.micro-qc-feedback {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
}

.remember-card {
  border-color: #FED7AA;
  background-color: #FFF7ED;
}
.remember-card .micro-label { color: #C2410C; }

.safety-card {
  border-color: #FECACA;
  background-color: #FEF2F2;
}
.safety-card .micro-label { color: #B91C1C; }

.did-you-know-card {
  border-color: #E9D5FF;
  background-color: #FAF5FF;
}
.did-you-know-card .micro-label { color: #7E22CE; }

.try-this-card {
  border-color: #FEF08A;
  background-color: #FEFCE8;
}
.try-this-card .micro-label { color: #A16207; }

.micro-body-text {
  font-size: 0.92rem;
  color: var(--dmr-slate);
  line-height: 1.55;
}

/* Real-World Scenario Section */
.scenario-box {
  border: 2px solid var(--dmr-black);
  background-color: #FFFFFF;
}

.scenario-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.scenario-badge {
  background-color: var(--dmr-black);
  color: var(--dmr-yellow);
  font-size: 0.72rem;
  font-weight: 900;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
}

.scenario-sub {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--dmr-muted);
}

.scenario-prompt {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dmr-black);
  line-height: 1.5;
  margin-bottom: 14px;
}

.scenario-options-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.scenario-btn-choice {
  background-color: var(--dmr-bg);
  border: 1.5px solid var(--dmr-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  text-align: left;
  font-size: 0.9rem;
  color: var(--dmr-black);
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 48px;
}

.scenario-btn-choice:hover {
  background-color: #FFFFFF;
  border-color: var(--dmr-yellow);
}

.scenario-btn-choice.correct {
  background-color: #DCFCE7;
  border-color: #16A34A;
  color: #14532D;
  font-weight: 800;
}

.scenario-btn-choice.wrong {
  background-color: #FEE2E2;
  border-color: #DC2626;
  color: #7F1D1D;
}

.scenario-feedback-card {
  padding: 14px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  line-height: 1.5;
  font-weight: 600;
}

.scenario-feedback-card.correct {
  background-color: #DCFCE7;
  color: #14532D;
  border: 1px solid #86EFAC;
}

.scenario-feedback-card.wrong {
  background-color: #FEE2E2;
  color: #7F1D1D;
  border: 1px solid #FCA5A5;
}

/* Modal Bottom Navigation */
.modal-footer-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--dmr-border);
}

.btn-modal-prev,
.btn-modal-next {
  background-color: var(--dmr-bg);
  border: 1px solid var(--dmr-border);
  color: var(--dmr-black);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-height: 44px;
}

.btn-modal-complete {
  background-color: var(--dmr-yellow);
  border: 1px solid var(--dmr-yellow-hover);
  color: var(--dmr-black);
  font-size: 0.95rem;
  font-weight: 900;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
}

.btn-modal-complete:hover {
  background-color: var(--dmr-yellow-hover);
}

/* ===================================================
   6. FINAL CTA & WHATSAPP SECTION
   =================================================== */
.final-cta-section {
  background-color: var(--dmr-black);
  color: #FFFFFF;
  border-top: 2px solid var(--dmr-yellow);
}

.final-cta-card {
  background-color: #1E293B;
  border: 1px solid #334155;
  border-radius: var(--radius-lg);
  padding: 36px 28px;
}

.final-eyebrow {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--dmr-yellow);
  font-family: var(--font-mono);
  margin-bottom: 6px;
}

.final-headline {
  font-size: 2rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 12px;
}

.final-subtext {
  font-size: 1rem;
  color: #94A3B8;
  max-width: 680px;
  line-height: 1.6;
  margin-bottom: 24px;
}

.dmr-contact-box {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.contact-item {
  background-color: #0F172A;
  border: 1px solid #334155;
  border-radius: var(--radius-sm);
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.contact-icon {
  font-size: 1.25rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  font-size: 0.85rem;
}

.contact-details strong {
  color: #FFFFFF;
}

.contact-details span {
  color: #94A3B8;
}

.final-btn-group {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-whatsapp-cta {
  background-color: #25D366;
  color: #FFFFFF;
  text-decoration: none;
  font-weight: 800;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background-color 0.15s ease;
  min-height: 48px;
}

.btn-whatsapp-cta:hover {
  background-color: #1EBE5D;
}

/* ===================================================
   PHASE 2 INTERACTIVE ENGINE STYLES
   =================================================== */

/* Header & Hero Tutor Buttons */
.btn-header-tutor {
  background-color: #1E293B;
  color: var(--dmr-yellow);
  border: 1px solid #334155;
  font-weight: 800;
  font-size: 0.85rem;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 40px;
}

.btn-header-tutor:hover {
  background-color: #334155;
  border-color: var(--dmr-yellow);
  color: #FFFFFF;
}

.btn-tutor-cta {
  background-color: #1E293B;
  color: var(--dmr-yellow);
  border: 1px solid #334155;
  font-weight: 800;
  font-size: 0.9rem;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 48px;
}

.btn-tutor-cta:hover {
  background-color: #334155;
  border-color: var(--dmr-yellow);
  color: #FFFFFF;
}

/* Learning States: Tags & Lesson Cards */
.lesson-status-tag.status-locked {
  background-color: #F1F5F9;
  color: #64748B;
  border: 1px solid #CBD5E1;
}

.lesson-status-tag.status-available {
  background-color: #FEF3C7;
  color: #92400E;
  border: 1px solid #F59E0B;
}

.lesson-status-tag.status-in-progress {
  background-color: #E0F2FE;
  color: #0369A1;
  border: 1px solid #38BDF8;
}

.lesson-status-tag.status-completed {
  background-color: #DCFCE7;
  color: #16A34A;
  border: 1px solid #86EFAC;
}

.lesson-card.locked {
  opacity: 0.72;
  border-color: #E2E8F0;
  cursor: pointer;
  background-color: #F8FAFC;
}

.lesson-card.locked:hover {
  border-color: #CBD5E1;
  transform: none;
}

.lesson-card.in-progress {
  border-left: 5px solid #0284C7;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.12);
}

.lesson-card.completed {
  border-left: 5px solid var(--dmr-success);
}

/* Review What You Learned Hub */
.review-mode-card {
  margin-top: 20px;
  padding: 18px;
  background-color: #F8FAFC;
  border: 1.5px dashed #CBD5E1;
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease;
}

.review-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 14px;
}

.review-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: #0284C7;
  background-color: #E0F2FE;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
}

.review-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--dmr-black);
  margin-bottom: 4px;
}

.review-desc {
  font-size: 0.85rem;
  color: var(--dmr-muted);
  max-width: 580px;
  line-height: 1.45;
}

.btn-review-assessment {
  background-color: var(--dmr-black);
  color: var(--dmr-yellow);
  border: 1px solid var(--dmr-yellow);
  font-weight: 800;
  font-size: 0.85rem;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
  min-height: 44px;
}

.btn-review-assessment:hover {
  background-color: var(--dmr-yellow);
  color: var(--dmr-black);
}

.review-chips-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.review-lesson-chip {
  background-color: #FFFFFF;
  border: 1px solid var(--dmr-border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--dmr-black);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
  min-height: 40px;
}

.review-lesson-chip:hover {
  border-color: var(--dmr-yellow);
  background-color: var(--dmr-yellow-subtle);
}

.review-chip-check {
  color: var(--dmr-success);
  font-weight: 900;
}

/* Review Banner inside Reader Modal */
.lesson-review-banner {
  background-color: #F0FDF4;
  border: 1px solid #86EFAC;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.review-banner-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.review-banner-icon {
  font-size: 1.3rem;
}

.review-banner-left strong {
  font-size: 0.85rem;
  color: #14532D;
  display: block;
}

.review-banner-left p {
  font-size: 0.8rem;
  color: #166534;
  margin: 0;
}

.btn-retake-lesson-checks {
  background-color: #FFFFFF;
  border: 1px solid #86EFAC;
  color: #14532D;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 36px;
}

.btn-retake-lesson-checks:hover {
  background-color: #DCFCE7;
  border-color: #16A34A;
}

/* Structured Sections & Technical Terminology Anchors */
.lesson-sections-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 20px;
}

.lesson-section-block {
  background-color: #FFFFFF;
  border: 1px solid var(--dmr-border);
  border-radius: var(--radius-sm);
  padding: 16px;
}

.section-block-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--dmr-black);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-block-title::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 14px;
  background-color: var(--dmr-yellow);
  border-radius: 2px;
}

.section-block-text {
  font-size: 0.9rem;
  color: #334155;
  line-height: 1.6;
}

/* Terminology Anchor: TERM + WHY IT MATTERS */
.term-anchor-box {
  background-color: #F8FAFC;
  border-left: 3px solid var(--dmr-yellow);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 12px 14px;
  margin-top: 10px;
}

.term-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 4px;
}

.term-badge {
  font-size: 0.72rem;
  font-weight: 900;
  color: #92400E;
  background-color: #FEF3C7;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.term-name {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--dmr-black);
}

.term-desc {
  font-size: 0.85rem;
  color: #475569;
  line-height: 1.5;
  margin-bottom: 6px;
}

.term-why-row {
  font-size: 0.82rem;
  color: #0F172A;
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-sm);
  padding: 6px 10px;
}

.term-why-label {
  font-weight: 800;
  color: #0284C7;
  margin-right: 4px;
}

/* Scenario Continue Row */
.scenario-continue-row {
  margin-top: 14px;
  display: flex;
  justify-content: flex-end;
}

.btn-scenario-continue {
  background-color: var(--dmr-black);
  color: var(--dmr-yellow);
  border: 1px solid var(--dmr-yellow);
  font-weight: 800;
  font-size: 0.9rem;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
  min-height: 44px;
}

.btn-scenario-continue:hover {
  background-color: var(--dmr-yellow);
  color: var(--dmr-black);
}

/* ===================================================
   7. DMR EXCAVATOR TUTOR MODAL (PHASE 3 HOOK)
   =================================================== */
.tutor-modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.tutor-modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.tutor-modal-sheet {
  background-color: #FFFFFF;
  width: 100%;
  max-width: 580px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: translateY(20px);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.tutor-modal-overlay.open .tutor-modal-sheet {
  transform: translateY(0);
}

.tutor-header-bar {
  background-color: var(--dmr-black);
  color: #FFFFFF;
  padding: 16px 20px;
  border-bottom: 2px solid var(--dmr-yellow);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tutor-badge {
  font-size: 0.7rem;
  font-weight: 900;
  background-color: var(--dmr-yellow);
  color: var(--dmr-black);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 4px;
}

.tutor-title {
  font-size: 1.15rem;
  font-weight: 900;
  color: #FFFFFF;
}

.tutor-modal-body {
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tutor-hero-card {
  text-align: center;
  padding: 20px 16px;
  background-color: #F8FAFC;
  border: 1px solid var(--dmr-border);
  border-radius: var(--radius-md);
}

.tutor-avatar-icon {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

.tutor-status-line {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--dmr-black);
  margin-bottom: 8px;
}

.tutor-intro-text {
  font-size: 0.88rem;
  color: var(--dmr-muted);
  line-height: 1.5;
  max-width: 480px;
  margin: 0 auto;
}

.tutor-preview-section {
  background-color: #FFFFFF;
  border: 1px solid var(--dmr-border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.tutor-preview-heading {
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: #475569;
  margin-bottom: 12px;
}

.tutor-prompt-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tutor-prompt-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.85rem;
  color: #1E293B;
  background-color: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  line-height: 1.4;
}

.prompt-icon {
  flex-shrink: 0;
}

.tutor-notice-box {
  background-color: #FFFBEB;
  border: 1px solid #FDE68A;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.82rem;
  color: #92400E;
  line-height: 1.45;
}

.tutor-actions-row {
  margin-top: 6px;
  display: flex;
  justify-content: flex-end;
}

/* ===================================================
   8. PREDEFINED FINAL EXCAVATOR ASSESSMENT MODAL
   =================================================== */
.assessment-modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.assessment-modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.assessment-modal-sheet {
  background-color: #FFFFFF;
  width: 100%;
  max-width: 680px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: translateY(20px);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 92vh;
  display: flex;
  flex-direction: column;
}

.assessment-modal-overlay.open .assessment-modal-sheet {
  transform: translateY(0);
}

.assessment-header-bar {
  background-color: var(--dmr-black);
  color: #FFFFFF;
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.assessment-badge {
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  background-color: var(--dmr-yellow);
  color: var(--dmr-black);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 4px;
}

.assessment-title {
  font-size: 1.15rem;
  font-weight: 900;
  color: #FFFFFF;
}

.assessment-stepper-text {
  font-size: 0.82rem;
  color: #94A3B8;
  font-weight: 700;
}

.assessment-progress-track {
  height: 6px;
  background-color: #1E293B;
  width: 100%;
}

.assessment-progress-fill {
  height: 100%;
  background-color: var(--dmr-yellow);
  transition: width 0.3s ease;
}

.assessment-modal-body {
  padding: 24px 20px;
  overflow-y: auto;
}

.aq-category-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 900;
  color: #0284C7;
  background-color: #E0F2FE;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
}

.aq-question-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--dmr-black);
  line-height: 1.45;
  margin-bottom: 18px;
}

.aq-choices-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.aq-choice-btn {
  background-color: #F8FAFC;
  border: 1.5px solid var(--dmr-border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  text-align: left;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--dmr-black);
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 50px;
  line-height: 1.4;
}

.aq-choice-btn:hover {
  background-color: #FFFFFF;
  border-color: var(--dmr-yellow);
}

.aq-choice-btn.correct {
  background-color: #DCFCE7;
  border-color: #16A34A;
  color: #14532D;
  font-weight: 800;
}

.aq-choice-btn.wrong {
  background-color: #FEE2E2;
  border-color: #DC2626;
  color: #7F1D1D;
}

.aq-feedback-card {
  padding: 14px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  line-height: 1.5;
  font-weight: 600;
  margin-bottom: 16px;
}

.aq-feedback-card.correct {
  background-color: #DCFCE7;
  color: #14532D;
  border: 1px solid #86EFAC;
}

.aq-feedback-card.wrong {
  background-color: #FEE2E2;
  color: #7F1D1D;
  border: 1px solid #FCA5A5;
}

.aq-footer-row {
  display: flex;
  justify-content: flex-end;
}

.btn-aq-next {
  background-color: var(--dmr-black);
  color: var(--dmr-yellow);
  border: 1px solid var(--dmr-yellow);
  font-size: 0.95rem;
  font-weight: 900;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 48px;
}

.btn-aq-next:hover {
  background-color: var(--dmr-yellow);
  color: var(--dmr-black);
}

/* Assessment Results Card */
.assessment-results-card {
  text-align: center;
  padding: 20px 10px;
}

.results-score-badge {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background-color: #FEF3C7;
  border: 4px solid var(--dmr-yellow);
  margin: 0 auto 16px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.score-pct-large {
  font-size: 1.8rem;
  font-weight: 900;
  color: #92400E;
  line-height: 1;
}

.score-label-sub {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #78350F;
  margin-top: 4px;
}

.results-title {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--dmr-black);
  margin-bottom: 8px;
}

.results-summary-text {
  font-size: 0.9rem;
  color: var(--dmr-muted);
  max-width: 480px;
  margin: 0 auto 20px;
  line-height: 1.5;
}

.results-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.metric-cell {
  background-color: #F8FAFC;
  border: 1px solid var(--dmr-border);
  border-radius: var(--radius-sm);
  padding: 12px;
}

.metric-val {
  font-size: 1.3rem;
  font-weight: 900;
  display: block;
}

.metric-val.text-success {
  color: var(--dmr-success);
}

.metric-val.text-danger {
  color: var(--dmr-danger);
}

.metric-sub {
  font-size: 0.72rem;
  color: #64748B;
  font-weight: 700;
  margin-top: 2px;
  display: block;
}

.results-actions-group {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-retake-assessment {
  background-color: #FFFFFF;
  border: 1.5px solid var(--dmr-border);
  color: var(--dmr-black);
  font-weight: 800;
  font-size: 0.9rem;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 48px;
}

.btn-retake-assessment:hover {
  border-color: var(--dmr-yellow);
  background-color: var(--dmr-yellow-subtle);
}

/* Footer */
.dmr-footer {
  background-color: #0B0F19;
  color: #64748B;
  padding: 24px 20px;
  border-top: 1px solid #1E293B;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-badge-sm {
  background-color: var(--dmr-yellow);
  color: var(--dmr-black);
  font-weight: 900;
  font-size: 0.9rem;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.footer-title {
  font-size: 0.85rem;
  font-weight: 800;
  color: #E2E8F0;
}

.footer-desc {
  font-size: 0.75rem;
  color: #64748B;
}

.footer-meta {
  font-size: 0.78rem;
  text-align: right;
}

.footer-meta strong {
  color: #E2E8F0;
}

.footer-legal {
  color: #475569;
  margin-top: 2px;
}

/* ===================================================
   RESPONSIVE DESIGN (MOBILE-FIRST PRINCIPLE)
   =================================================== */
@media (max-width: 768px) {
  .hero-headline {
    font-size: 1.65rem;
  }

  .component-card-grid {
    grid-template-columns: 1fr;
  }

  .lessons-grid {
    grid-template-columns: 1fr;
  }

  .journey-milestones-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .dmr-contact-box {
    grid-template-columns: 1fr;
  }

  .lesson-modal-sheet {
    height: 96vh;
    border-radius: 12px 12px 0 0;
  }

  .modal-body-scroll {
    padding: 16px;
  }

  .header-actions {
    display: none;
  }

  .hero-actions-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-progress-pill {
    align-items: flex-start;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .component-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Accessibility: Respect Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}