/* Premium Design System for Business Architecture Interactive Media */

:root {
  /* Color Tokens - Dark Theme (Default) */
  --color-bg-base: #0f172a;
  --color-bg-surface: #1e293b;
  --color-bg-card: rgba(30, 41, 59, 0.7);
  --color-text-main: #f8fafc;
  --color-text-sub: #94a3b8;
  --color-border: rgba(148, 163, 184, 0.15);
  
  --color-primary: #3b82f6;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #60a5fa;
  --color-accent: #06b6d4;
  --color-accent-glow: rgba(6, 182, 212, 0.25);
  
  --color-success: #10b981;
  --color-error: #ef4444;
  --color-warning: #f59e0b;
  
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 15px var(--color-accent-glow);
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme overrides */
body.theme-light {
  --color-bg-base: #f1f5f9;
  --color-bg-surface: #ffffff;
  --color-bg-card: rgba(255, 255, 255, 0.75);
  --color-text-main: #0f172a;
  --color-text-sub: #64748b;
  --color-border: rgba(100, 116, 139, 0.15);
  
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #3b82f6;
  --color-accent: #0891b2;
  --color-accent-glow: rgba(8, 145, 178, 0.15);
  
  --shadow-glow: 0 0 12px rgba(8, 145, 178, 0.1);
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-base);
  color: var(--color-text-main);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-sub);
}

/* Modal Overlay & Start Screen */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity var(--transition-normal);
}

.modal-overlay.fade-out {
  opacity: 0;
  pointer-events: none;
}

.modal-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  padding: 40px;
  max-width: 500px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-lg), 0 0 40px rgba(59, 130, 246, 0.15);
  transform: scale(0.95);
  animation: modalIn var(--transition-normal) forwards;
}

@keyframes modalIn {
  to {
    transform: scale(1);
  }
}

.modal-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  border-radius: 20px;
  padding: 16px;
  box-shadow: var(--shadow-glow);
}

.modal-logo-wrapper {
  margin-bottom: 24px;
  display: flex;
  justify-content: center;
}

.modal-logo {
  width: 90px;
  height: 90px;
  filter: drop-shadow(0 0 10px rgba(59, 130, 246, 0.25));
  object-fit: contain;
}

.modal-lecturer {
  margin-top: 16px;
  margin-bottom: 28px;
  padding: 12px;
  border-radius: 12px;
  background: rgba(59, 130, 246, 0.05);
  border: 1px dashed rgba(59, 130, 246, 0.2);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: auto;
  min-width: 220px;
}

.modal-lecturer .lecturer-label {
  font-size: 0.72rem;
  color: var(--color-text-sub);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.modal-lecturer .lecturer-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-primary-light);
}

.modal-card h2 {
  font-size: 1.8rem;
  margin-bottom: 8px;
  font-weight: 700;
}

.modal-card h3 {
  font-size: 1.2rem;
  color: var(--color-primary-light);
  margin-bottom: 16px;
  font-weight: 500;
}

.modal-card p {
  color: var(--color-text-sub);
  margin-bottom: 24px;
  line-height: 1.6;
}

.voice-selector-container {
  margin-bottom: 24px;
  text-align: left;
}

.voice-selector-container label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-sub);
  margin-bottom: 6px;
}

.voice-selector-container select {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-base);
  color: var(--color-text-main);
  outline: none;
}

/* App Container Layout */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* Header */
.app-header {
  height: 70px;
  background: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-box {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  border-radius: 10px;
  font-size: 1.2rem;
  box-shadow: var(--shadow-glow);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-text .text-main {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}

.logo-text .text-sub {
  font-size: 0.75rem;
  color: var(--color-text-sub);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.select-voice {
  background: var(--color-bg-base);
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  outline: none;
  max-width: 200px;
}

/* Main Workspace */
.main-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Roadmap Sidebar */
.roadmap-sidebar {
  width: 280px;
  background: var(--color-bg-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  padding: 16px;
  overflow-y: auto;
}

.sidebar-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--color-text-sub);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
  padding-left: 8px;
}

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

.roadmap-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.roadmap-item:hover {
  background: rgba(59, 130, 246, 0.08);
}

.roadmap-item.active {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.3);
}

.roadmap-item.visited .scene-index {
  background: var(--color-success);
  color: white;
}

.scene-index {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-bg-base);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.roadmap-item.active .scene-index {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.scene-meta {
  display: flex;
  flex-direction: column;
}

.scene-title-text {
  font-size: 0.85rem;
  font-weight: 500;
}

.scene-dur {
  font-size: 0.7rem;
  color: var(--color-text-sub);
}

/* Presentation Viewer Area */
.viewer-area {
  flex: 1;
  background: var(--color-bg-base);
  padding: 24px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.presentation-stage {
  flex: 1;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

/* Slide Deck Mechanism */
.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding: 32px;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transform: translateX(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow), visibility var(--transition-slow);
  z-index: 1;
}

.slide.active {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
  z-index: 2;
}

.slide.exit-left {
  opacity: 0;
  transform: translateX(-30px);
}

.scene-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* Content Wrappers & Core Typo */
.content-wrapper {
  position: relative;
  z-index: 5;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.content-overlay {
  position: relative;
  z-index: 5;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100%;
  width: 100%;
}

.scene-title {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 8px;
  text-align: left;
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 12px;
  color: var(--color-primary-light);
}

.scene-subtitle {
  font-size: 1rem;
  color: var(--color-text-sub);
  margin-bottom: 24px;
}

/* UI Elements & Layout Utilities */
.grid-layout {
  display: grid;
  gap: 20px;
}
.cols-2 { grid-template-columns: 1fr 1fr; }
.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.col-span-2 { grid-column: span 2; }
.align-center { align-items: center; }
.gap-md { gap: 16px; }
.gap-lg { gap: 24px; }
.gap-xl { gap: 40px; }
.height-stretch { flex: 1; }
.text-center { text-align: center; }
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.mt-md { margin-top: 16px; }
.mt-lg { margin-top: 24px; }
.italic { font-style: italic; }
.font-semibold { font-weight: 600; }
.font-lg { font-size: 1.15rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  outline: none;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
  background: rgba(148, 163, 184, 0.1);
  color: var(--color-text-main);
  border-color: var(--color-border);
}
.btn-secondary:hover {
  background: rgba(148, 163, 184, 0.2);
}

.btn-accent {
  background: var(--color-accent);
  color: white;
}
.btn-accent:hover {
  background: #0891b2;
  box-shadow: var(--shadow-glow);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
  border-radius: 12px;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.75rem;
  border-radius: 6px;
}

.btn-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  padding: 0;
}

.btn-icon {
  background: transparent;
  border: none;
  color: var(--color-text-sub);
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  color: var(--color-text-main);
  background: rgba(148, 163, 184, 0.1);
}

.btn-icon svg {
  width: 20px;
  height: 20px;
}

.inline-icon {
  width: 16px;
  height: 16px;
}

/* Glassmorphism Card styling */
.glass-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.glass-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: var(--shadow-lg);
}

/* ---------------------------------------------------- */
/* SCENE SPECIFIC STYLES                                */
/* ---------------------------------------------------- */

/* Scene 1: Opening */
.campus-logo-wrapper {
  margin-bottom: 24px;
}
.campus-logo {
  width: 120px;
  height: 120px;
  filter: drop-shadow(0 0 15px rgba(59, 130, 246, 0.3));
}
.university-banner {
  margin-top: 32px;
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.uni-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.05em;
  color: var(--color-text-main);
}
.dept-name {
  font-size: 0.9rem;
  color: var(--color-primary-light);
  letter-spacing: 0.02em;
}

.lecturer-banner {
  margin-top: 24px;
  padding: 12px 24px;
  border-radius: 14px;
  background: rgba(59, 130, 246, 0.06);
  border: 1px solid rgba(59, 130, 246, 0.15);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.lecturer-banner .lecturer-label {
  font-size: 0.75rem;
  color: var(--color-text-sub);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.lecturer-banner .lecturer-name {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-primary-light);
  text-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

/* Scene 2: Pengertian Diagram Net */
.highlight-text {
  font-size: 1.25rem;
  line-height: 1.5;
  font-weight: 500;
  color: var(--color-text-main);
  margin-bottom: 12px;
  border-left: 4px solid var(--color-primary);
  padding-left: 16px;
}
.secondary-text {
  font-size: 0.9rem;
  color: var(--color-text-sub);
  margin-bottom: 24px;
}
.interactive-info-box {
  background: rgba(15, 23, 42, 0.3);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 16px;
  font-size: 0.9rem;
  line-height: 1.6;
  min-height: 120px;
}
.info-placeholder {
  color: var(--color-text-sub);
  font-style: italic;
}
.diagram-side {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  min-height: 350px;
}
.interactive-net {
  position: relative;
  width: 350px;
  height: 350px;
}
.net-node {
  position: absolute;
  transform: translate(-50%, -50%);
  background: var(--color-bg-surface);
  border: 2px solid var(--color-border);
  border-radius: 16px;
  padding: 12px 18px;
  text-align: center;
  transition: all var(--transition-fast);
  z-index: 10;
  box-shadow: var(--shadow-md);
  user-select: none;
}
.net-node:hover, .net-node.active {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-glow);
  transform: translate(-50%, -50%) scale(1.05);
}
.node-icon {
  font-size: 1.6rem;
  margin-bottom: 4px;
}
.node-label {
  font-size: 0.85rem;
  font-weight: 600;
}
.net-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  pointer-events: none;
}
.net-lines line {
  stroke: var(--color-border);
  transition: stroke var(--transition-fast), stroke-width var(--transition-fast);
}
.net-lines line.active {
  stroke: var(--color-accent);
  stroke-width: 3;
}

/* Scene 3: As-Is To-Be Split Slider */
.split-slider-container {
  position: relative;
  flex: 1;
  display: flex;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  min-height: 320px;
}
.slider-side {
  width: 50%;
  padding: 24px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width 0.1s ease;
}
.slider-left {
  background: rgba(239, 68, 68, 0.04);
}
.slider-right {
  background: rgba(16, 185, 129, 0.04);
  border-left: 1px dashed var(--color-border);
}
.slider-header {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
  padding: 8px 16px;
  border-radius: 8px;
  display: inline-block;
  align-self: flex-start;
}
.color-as-is {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
}
.color-to-be {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}
.slider-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.slider-card {
  background: var(--color-bg-surface);
  border-radius: 12px;
  padding: 16px;
  box-shadow: var(--shadow-sm);
}
.border-as-is { border-left: 4px solid var(--color-error); }
.border-to-be { border-left: 4px solid var(--color-success); }
.slider-card h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}
.slider-card p {
  font-size: 0.85rem;
  color: var(--color-text-sub);
  line-height: 1.5;
}
.scene3-icon {
  margin-top: 10px;
  font-size: 1.2rem;
  letter-spacing: 4px;
}
.slider-handle {
  position: absolute;
  top: 0;
  left: 50%;
  height: 100%;
  width: 4px;
  background: var(--color-primary);
  transform: translateX(-50%);
  cursor: ew-resize;
  z-index: 100;
}
.handle-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
  pointer-events: none;
}
.handle-button svg {
  width: 18px;
  height: 18px;
}
.handle-line {
  height: 100%;
  width: 100%;
}
.slider-tip {
  font-size: 0.85rem;
  color: var(--color-text-sub);
  text-align: center;
  margin-top: 12px;
}

/* Scene 4: Org Chart */
.org-chart-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 20px 0;
  flex: 1;
  justify-content: center;
}
.org-row {
  display: flex;
  justify-content: center;
  width: 100%;
  gap: 16px;
}
.org-connector-vertical {
  width: 2px;
  height: 24px;
  background: var(--color-border);
  position: relative;
}
.org-connector-vertical::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 2px;
  background: var(--color-border);
}
.org-node {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 12px 16px;
  width: 200px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}
.org-node:hover, .org-node.active {
  border-color: var(--color-primary-light);
  background: var(--color-bg-surface);
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
}
.node-director {
  border-color: var(--color-primary);
  width: 240px;
}
.role-badge {
  font-size: 0.65rem;
  text-transform: uppercase;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 8px;
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-primary-light);
}
.badge-academic { background: rgba(59, 130, 246, 0.15); color: #60a5fa; }
.badge-finance { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.badge-hr { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.badge-ops { background: rgba(148, 163, 184, 0.15); color: #cbd5e1; }
.org-node h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}
.role-desc {
  display: block;
  font-size: 0.72rem;
  color: var(--color-text-sub);
  line-height: 1.3;
}
.org-detail-pane {
  background: rgba(15, 23, 42, 0.2);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 12px;
  font-size: 0.85rem;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

/* Scene 5: BPMN Swimlanes */
.bpmn-container {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  flex: 1;
  background: rgba(15, 23, 42, 0.1);
  position: relative;
  min-height: 280px;
}
.bpmn-lane {
  display: flex;
  height: 33.33%;
  border-bottom: 1px solid var(--color-border);
}
.bpmn-lane:last-child {
  border-bottom: none;
}
.lane-header {
  width: 120px;
  background: rgba(148, 163, 184, 0.05);
  border-right: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-text-sub);
  text-transform: uppercase;
}
.lane-content {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: relative;
}
.bpmn-element {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  z-index: 10;
}
.bpmn-element.active {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-glow);
  transform: scale(1.05);
}
.bpmn-element.completed {
  border-color: var(--color-success);
  background: rgba(16, 185, 129, 0.05);
}
.bpmn-symbol {
  font-size: 1rem;
}
.start-event, .end-event {
  border-radius: 50%;
  width: 48px;
  height: 48px;
  padding: 0;
  justify-content: center;
}
.start-event span, .end-event span {
  display: none;
}
.gateway {
  transform: rotate(45deg);
  width: 54px;
  height: 54px;
  justify-content: center;
  padding: 0;
  border-radius: 4px;
}
.gateway span {
  transform: rotate(-45deg);
  font-size: 0.7rem;
  font-weight: 700;
}
.bpmn-arrow {
  color: var(--color-text-sub);
  font-size: 1.1rem;
}
.bpmn-spacer {
  display: flex;
}
.w-2x { width: 100px; }
.w-3x { width: 150px; }
.w-5x { width: 250px; }
.bpmn-connecting-lines {
  position: absolute;
  top: 0;
  left: 120px;
  width: calc(100% - 120px);
  height: 100%;
  pointer-events: none;
  z-index: 5;
}
.bpmn-token {
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--color-accent);
  z-index: 100;
  display: none;
}
.bpmn-controls {
  margin-top: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
}
.bpmn-status-text {
  font-size: 0.85rem;
  color: var(--color-primary-light);
  font-weight: 600;
}

/* Scene 6: Business Functions Cards */
.business-function-card {
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}
.business-function-card:hover {
  transform: translateY(-6px);
}
.card-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
}
.business-function-card h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
}
.business-function-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.business-function-card li {
  font-size: 0.8rem;
  color: var(--color-text-sub);
  position: relative;
  padding-left: 14px;
}
.business-function-card li::before {
  content: '•';
  color: var(--color-primary);
  position: absolute;
  left: 0;
}
.card-footer {
  margin-top: 20px;
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--color-primary-light);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-align: right;
}
.card-glow {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}
.business-function-card:hover .card-glow {
  opacity: 1;
}

.function-detail-modal {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}
.function-detail-modal .modal-content {
  max-width: 480px;
  width: 90%;
  border-radius: 16px;
  padding: 32px;
}
.close-modal {
  position: absolute;
  top: 12px;
  right: 18px;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-sub);
  transition: color var(--transition-fast);
}
.close-modal:hover {
  color: var(--color-text-main);
}

/* Scene 7: Layanan Bisnis Student Mockup Dashboard */
.mockup-sidebar {
  padding: 16px;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
}
.student-profile {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 16px;
}
.student-profile .avatar {
  font-size: 1.8rem;
  width: 40px;
  height: 40px;
  background: var(--color-bg-base);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
}
.student-profile h5 {
  font-size: 0.85rem;
  font-weight: 600;
}
.student-profile span {
  font-size: 0.72rem;
  color: var(--color-text-sub);
}
.mockup-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mockup-menu li {
  padding: 10px 12px;
  font-size: 0.8rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-sub);
}
.mockup-menu li:hover, .mockup-menu li.active {
  background: var(--color-bg-base);
  color: var(--color-text-main);
}
.mockup-menu li.active {
  border-left: 3px solid var(--color-primary);
  font-weight: 600;
}
.mockup-main {
  padding: 20px;
  border-radius: 12px;
  overflow-y: auto;
  min-height: 240px;
}
.mockup-tab-content h4 {
  font-size: 1rem;
  margin-bottom: 14px;
  color: var(--color-primary-light);
}
.mockup-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.form-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.form-row label {
  font-size: 0.75rem;
  color: var(--color-text-sub);
}
.form-row input, .form-row select {
  padding: 8px 12px;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-base);
  color: var(--color-text-main);
  outline: none;
}
.invoice-box {
  background: rgba(15, 23, 42, 0.2);
  border-radius: 8px;
  padding: 16px;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.invoice-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
}
.invoice-row.total {
  font-size: 0.95rem;
  margin-top: 6px;
}
.payment-methods {
  margin: 12px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.payment-methods label {
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.chat-container {
  display: flex;
  flex-direction: column;
  height: 180px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--color-bg-base);
}
.chat-log {
  flex: 1;
  padding: 10px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.chat-msg {
  padding: 6px 12px;
  border-radius: 12px;
  font-size: 0.78rem;
  max-width: 80%;
  word-break: break-word;
}
.chat-msg.system {
  align-self: center;
  background: transparent;
  color: var(--color-text-sub);
  font-size: 0.7rem;
}
.chat-msg.advisor {
  align-self: flex-start;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
}
.chat-msg.student {
  align-self: flex-end;
  background: var(--color-primary);
  color: white;
}
.chat-input-row {
  display: flex;
  border-top: 1px solid var(--color-border);
}
.chat-input-row input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 8px 12px;
  color: var(--color-text-main);
  outline: none;
  font-size: 0.8rem;
}
.chat-input-row button {
  border: none;
  border-radius: 0;
}

/* Scene 8: Morphing Comparison Table */
.table-container {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  margin-bottom: 16px;
}
.gap-analysis-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: left;
}
.gap-analysis-table th {
  background: rgba(148, 163, 184, 0.08);
  padding: 12px 16px;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text-sub);
  border-bottom: 1px solid var(--color-border);
}
.gap-analysis-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
}
.gap-analysis-table tr:last-child td {
  border-bottom: none;
}
.action-column {
  font-style: italic;
  color: var(--color-primary-light);
  font-weight: 500;
}
.color-red { color: #f87171; }
.color-green { color: #34d399; }

.checklist-reveal-box {
  margin-top: 16px;
}
.checklist-items {
  margin-top: 12px;
  display: flex;
  justify-content: center;
  gap: 20px;
}
.chk-reveal-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-fast);
}
.chk-reveal-item.show {
  opacity: 1;
  transform: translateY(0);
}
.chk-reveal-item span.icon {
  font-size: 1.1rem;
}

/* Scene 9: Alignment Bisnis dan TI */
.alignment-diagram-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 30px 0;
  gap: 8px;
  flex: 1;
}
.align-box {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 16px;
  width: 22%;
  min-height: 140px;
  text-align: center;
  transition: all var(--transition-fast);
}
.align-box:hover {
  transform: scale(1.03);
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.1);
}
.align-icon {
  font-size: 1.8rem;
  margin-bottom: 8px;
}
.align-box h4 {
  font-size: 0.9rem;
  margin-bottom: 6px;
  color: var(--color-primary-light);
}
.align-box p {
  font-size: 0.72rem;
  color: var(--color-text-sub);
  line-height: 1.4;
}
.align-arrow {
  color: var(--color-text-sub);
  font-size: 1.3rem;
  font-weight: bold;
}
.pulse-line-wrapper {
  position: relative;
  height: 4px;
  background: rgba(148, 163, 184, 0.1);
  border-radius: 2px;
  margin: 20px 0;
  overflow: hidden;
}
.pulse-line {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
  transition: width 15s linear;
}
.pulse-particle {
  position: absolute;
  top: 0;
  left: 0;
  width: 30px;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  animation: pulseMove 2.5s infinite linear;
}
@keyframes pulseMove {
  0% { left: -30px; }
  100% { left: 100%; }
}

/* Scene 10: Case Study Transformation */
.case-study-stage {
  display: flex;
  gap: 20px;
  align-items: stretch;
  flex: 1;
  margin: 16px 0;
}
.case-side {
  width: 45%;
  background: rgba(15, 23, 42, 0.15);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
}
.case-side h4 {
  font-size: 0.95rem;
  margin-bottom: 12px;
  text-align: center;
  color: var(--color-text-main);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 8px;
}
.case-transform-control {
  width: 10%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
}
.case-transform-control span {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--color-accent);
}
.btn-circle.btn-accent {
  box-shadow: 0 0 12px var(--color-accent-glow);
  animation: breathe 2s infinite ease-in-out;
}
@keyframes breathe {
  0%, 100% { transform: scale(1); box-shadow: 0 0 10px var(--color-accent-glow); }
  50% { transform: scale(1.1); box-shadow: 0 0 20px rgba(6, 182, 212, 0.5); }
}

/* Manual Queue graphic simulation */
.manual-queue-graphic {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 16px;
}
.counter-desk {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.8rem;
  box-shadow: var(--shadow-sm);
}
.student-queue {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}
.queue-person {
  font-size: 0.8rem;
  background: rgba(148, 163, 184, 0.1);
  padding: 4px 8px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.queue-text {
  color: var(--color-warning);
}
.status-msg-manual, .status-msg-digital {
  font-size: 0.75rem;
  color: var(--color-text-sub);
  margin-top: 12px;
  text-align: center;
  line-height: 1.4;
}

/* Digital portal graphic simulation */
.digital-portal-graphic {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
}
.phone-frame {
  width: 100px;
  height: 160px;
  border: 4px solid #334155;
  border-radius: 12px;
  background: #000;
  padding: 6px;
  display: flex;
}
.phone-screen {
  flex: 1;
  background: var(--color-bg-base);
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4px;
}
.screen-title {
  font-size: 0.55rem;
  color: var(--color-text-sub);
  margin-bottom: 12px;
}
.screen-checkmark {
  font-size: 1.8rem;
  animation: popScale 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) infinite alternate;
}
@keyframes popScale {
  0% { transform: scale(0.8); }
  100% { transform: scale(1.1); }
}
.screen-detail {
  font-size: 0.5rem;
  color: var(--color-success);
  margin-top: 6px;
  font-weight: 700;
}
.cloud-db {
  background: rgba(59, 130, 246, 0.1);
  border: 1px dashed var(--color-primary);
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 0.8rem;
}

/* Transform transition effects */
.transformed #case-left-queue .queue-person {
  opacity: 0.15;
  transform: scale(0.9);
}
.transformed #case-left-queue .queue-text {
  text-decoration: line-through;
  color: var(--color-error);
}
.transformed #case-right-portal {
  background: rgba(16, 185, 129, 0.08);
  border-color: var(--color-success);
}

/* Scene 11: Carousel Tools */
.carousel-container {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  min-height: 250px;
}
.carousel-track {
  display: flex;
  width: 100%;
  height: 100%;
  position: relative;
}
.carousel-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.95);
  transition: opacity 0.5s ease, transform 0.5s ease, visibility 0.5s ease;
}
.carousel-item.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}
.tool-card {
  max-width: 440px;
  width: 90%;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
  box-shadow: var(--shadow-md);
}
.tool-logo {
  font-size: 3rem;
  margin-bottom: 12px;
}
.tool-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--color-primary-light);
}
.tool-card p {
  font-size: 0.85rem;
  color: var(--color-text-sub);
  line-height: 1.5;
}
.carousel-btn {
  position: absolute;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-fast);
}
.carousel-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-prev { left: 16px; }
.btn-next { right: 16px; }

/* Scene 13: Closing summary list */
.closing-summary {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.summary-point {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  opacity: 0;
  transform: translateX(-20px);
}
.summary-point.reveal {
  animation: revealPoint 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
@keyframes revealPoint {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
.point-num {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-accent);
  background: rgba(6, 182, 212, 0.1);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.point-content h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
  color: var(--color-text-main);
}
.point-content p {
  font-size: 0.8rem;
  color: var(--color-text-sub);
  line-height: 1.45;
}

.closing-graphic {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.glowing-orb {
  position: relative;
  width: 140px;
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.rotating-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  animation: rotateSvg 20s linear infinite;
}
@keyframes rotateSvg {
  100% { transform: rotate(360deg); }
}
.orb-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  text-shadow: 0 0 10px var(--color-accent-glow);
}

/* Scene 14: Credit Scene */
.credit-scroll {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.credit-title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  background: linear-gradient(135deg, var(--color-text-main), var(--color-text-sub));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.divider-line {
  width: 80px;
  height: 2px;
  background: var(--color-primary);
  margin: 16px 0 24px;
}
.credit-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--color-text-sub);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}
.credit-value {
  font-size: 0.95rem;
  color: var(--color-text-main);
  margin-bottom: 16px;
  text-align: center;
}
.credit-box {
  background: rgba(15, 23, 42, 0.3);
  border: 1px solid var(--color-border);
  padding: 12px 24px;
  border-radius: 8px;
}
.dosen-title {
  font-size: 0.75rem;
  color: var(--color-primary-light);
  margin-bottom: 4px;
  text-transform: uppercase;
  font-weight: 700;
}
.dosen-name {
  font-size: 0.9rem;
  font-weight: 500;
}

/* ---------------------------------------------------- */
/* FOOTER PANEL & APP LEVEL CONTROLS                    */
/* ---------------------------------------------------- */

.app-footer {
  height: 80px;
  background: var(--color-bg-surface);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
  z-index: 100;
}

.footer-left {
  width: 200px;
  height: 100%;
  display: flex;
  align-items: center;
}

.visualizer-canvas {
  width: 100%;
  height: 40px;
  opacity: 0.6;
}

.subtitle-container {
  flex: 1;
  max-width: 650px;
  padding: 0 16px;
  text-align: center;
}

.subtitle-text {
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--color-text-main);
  background: rgba(15, 23, 42, 0.2);
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.control-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 250px;
  justify-content: flex-end;
}

.checkbox-control {
  display: flex;
  align-items: center;
  gap: 6px;
  user-select: none;
}
.checkbox-control input {
  cursor: pointer;
}
.checkbox-label {
  font-size: 0.8rem;
  color: var(--color-text-sub);
  cursor: pointer;
}

/* Play/Pause Button sizing override */
.play-button {
  background: var(--color-primary);
  color: white;
  width: 50px;
  height: 50px;
}
.play-button:hover {
  background: var(--color-primary-dark);
}
.play-button svg {
  width: 22px;
  height: 22px;
}

/* Playback progress bar at the very bottom */
.progress-bar-container {
  height: 4px;
  width: 100%;
  background: rgba(148, 163, 184, 0.1);
  position: relative;
}
.progress-bar-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: width 0.1s linear;
}

/* ---------------------------------------------------- */
/* ANIMATIONS UTILITIES                                 */
/* ---------------------------------------------------- */
.anim-fade-in-down {
  animation: fadeInDown 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.anim-slide-up {
  opacity: 0;
  animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.anim-fade-in {
  opacity: 0;
  animation: fadeIn 0.8s ease forwards;
}
.anim-left {
  opacity: 0;
  transform: translateX(-40px);
  animation: slideFromLeft 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.anim-right {
  opacity: 0;
  transform: translateX(40px);
  animation: slideFromRight 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.anim-zoom-in {
  opacity: 0;
  transform: scale(0.92);
  animation: zoomIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  to { opacity: 1; }
}
@keyframes slideFromLeft {
  to { opacity: 1; transform: translateX(0); }
}
@keyframes slideFromRight {
  to { opacity: 1; transform: translateX(0); }
}
@keyframes zoomIn {
  to { opacity: 1; transform: scale(1); }
}

/* RESPONSIVE DESIGN */
@media (max-width: 900px) {
  body {
    overflow-y: auto;
    height: auto;
  }
  .app-container {
    height: auto;
    min-height: 100vh;
  }
  .main-layout {
    flex-direction: column;
    overflow: visible;
  }
  .roadmap-sidebar {
    width: 100%;
    height: 140px;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    flex-direction: row;
    overflow-x: auto;
    overflow-y: hidden;
  }
  .roadmap-list {
    flex-direction: row;
  }
  .roadmap-item {
    flex-shrink: 0;
    width: 160px;
  }
  .viewer-area {
    padding: 12px;
    overflow: visible;
  }
  .presentation-stage {
    min-height: 500px;
  }
  .grid-layout.cols-4 {
    grid-template-columns: 1fr 1fr;
  }
  .grid-layout.cols-3 {
    grid-template-columns: 1fr;
  }
  .col-span-2 {
    grid-column: auto;
  }
  .alignment-diagram-container {
    flex-direction: column;
    gap: 16px;
  }
  .align-box {
    width: 100%;
    min-height: auto;
  }
  .align-arrow {
    transform: rotate(90deg);
  }
  .app-footer {
    flex-direction: column;
    height: auto;
    padding: 16px;
    gap: 12px;
  }
  .footer-left {
    display: none;
  }
  .control-bar {
    width: 100%;
    justify-content: center;
  }
  .case-study-stage {
    flex-direction: column;
  }
  .case-side {
    width: 100%;
  }
}

/* Floating Lecturer Presenter Box */
.presenter-container {
  position: absolute;
  bottom: 24px;
  right: 24px;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  z-index: 1000;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 15px rgba(59, 130, 246, 0.2);
  border: 3px solid var(--color-primary);
  background: var(--color-bg-card);
  backdrop-filter: blur(8px);
  cursor: grab;
  user-select: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.presenter-container:active {
  cursor: grabbing;
}

.presenter-container.talking {
  border-color: var(--color-accent);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 25px rgba(6, 182, 212, 0.4);
  animation: presenter-bobbing 3s infinite ease-in-out;
}

@keyframes presenter-bobbing {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-4px) scale(1.03); }
}

.presenter-video-frame {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
}

.presenter-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  transform: scale(1.2) translateY(-2px); /* Cropping head/shoulders beautifully */
  user-drag: none;
  -webkit-user-drag: none;
}

.talking-indicator {
  position: absolute;
  bottom: 6px;
  right: 6px;
  width: 12px;
  height: 12px;
  background: #10b981;
  border-radius: 50%;
  border: 2px solid var(--color-bg-surface);
  box-shadow: 0 0 8px #10b981;
  display: none;
  z-index: 10;
}

.presenter-container.talking .talking-indicator {
  display: block;
  animation: pulse-talking-dot 1.5s infinite ease-in-out;
}

@keyframes pulse-talking-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

.presenter-visualizer-canvas {
  position: absolute;
  top: -8px;
  left: -8px;
  width: 126px;
  height: 126px;
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}

.presenter-label {
  position: absolute;
  bottom: -18px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.65rem;
  font-weight: 600;
  white-space: nowrap;
  letter-spacing: 0.02em;
  pointer-events: none;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 4px;
}

.presenter-status {
  color: var(--color-text-sub);
  transition: color var(--transition-fast);
}

.presenter-container.talking .presenter-status {
  color: #10b981;
}

/* Presenter Lip-Sync Overlay */
.presenter-mouth {
  display: none;
}