/**
 * Science Engine CSS
 * All layouts, components, and animations for interactive science stories
 */

/* ════════════════════════════════════════════════════════════════
   VARIABLES & TOKENS
   ════════════════════════════════════════════════════════════════ */

:root {
  /* Colors (inherited from --tok-* and --dom-* tokens) */
  --se-nav-bg: var(--dom-nav-bg, #1e3a8a);
  --se-accent: var(--dom-accent, #3b82f6);
  --se-accent2: var(--dom-accent2, #06b6d4);
  --se-bg: var(--dom-bg, #f0f9ff);
  --se-bg-card: var(--dom-bg-card, #ffffff);
  --se-border: var(--dom-border, rgba(59, 130, 246, 0.2));

  /* Spacing */
  --se-spacing-xs: 0.5rem;
  --se-spacing-sm: 1rem;
  --se-spacing-md: 1.5rem;
  --se-spacing-lg: 2rem;
  --se-spacing-xl: 3rem;

  /* Sizing */
  --se-max-width: 540px;
  --se-scene-height: 300px;

  /* Timing */
  --se-duration-short: 0.3s;
  --se-duration-medium: 0.6s;
  --se-duration-long: 1s;
}

/* ════════════════════════════════════════════════════════════════
   LANDING SCREEN
   ════════════════════════════════════════════════════════════════ */

.se-landing {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 80px);
  padding: var(--se-spacing-lg);
  text-align: center;
  background: linear-gradient(135deg, var(--se-bg) 0%, rgba(255, 255, 255, 0.5) 100%);
}

.se-landing-hero {
  margin-bottom: var(--se-spacing-xl);
}

.se-hero-icon {
  font-size: 5rem;
  margin-bottom: var(--se-spacing-md);
  color: var(--se-accent);
  animation: se-bounce-in 0.6s ease-out;
}

.se-landing-hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--se-nav-bg);
  margin: 0 0 var(--se-spacing-sm) 0;
}

.se-tagline {
  font-size: 1.125rem;
  color: #666;
  margin: 0;
  max-width: 400px;
}

.se-landing-cta {
  display: flex;
  flex-direction: column;
  gap: var(--se-spacing-sm);
  width: 100%;
  max-width: 300px;
}

/* ════════════════════════════════════════════════════════════════
   SCENE SCREEN
   ════════════════════════════════════════════════════════════════ */

.se-scene-container {
  padding: var(--se-spacing-lg);
  max-width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--se-spacing-lg);
}

/* 3D scenes on desktop: keep nav buttons visible */
@media (min-width: 1024px) {
  .se-scene-container:has(.se-scene-canvas--3d) {
    max-width: 1200px;
    margin: 0 auto;
  }
}

.se-scene-content {
  display: flex;
  flex-direction: column;
  gap: var(--se-spacing-md);
  width: 100%;
  max-width: var(--se-max-width);
  margin: 0 auto;
}

/* 3D scenes on desktop: side-by-side layout */
@media (min-width: 1024px) {
  .se-scene-content:has(> .se-scene-canvas--3d) {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--se-spacing-lg);
    max-width: 1000px;
  }

  .se-scene-content:has(> .se-scene-canvas--3d) > .se-scene-canvas--3d {
    grid-row: 1 / 3;
    aspect-ratio: 3 / 2;
  }

  .se-scene-content:has(> .se-scene-canvas--3d) > .se-scene-narration {
    grid-column: 2;
    grid-row: 1;
  }

  .se-scene-content:has(> .se-scene-canvas--3d) > .se-progress-dots {
    grid-column: 2;
    grid-row: 2;
    align-self: end;
  }
}

.se-scene-canvas {
  position: relative;
  background: var(--se-bg-card);
  border: 2px solid var(--se-border);
  border-radius: 12px;
  padding: var(--se-spacing-md);
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.se-scene-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.se-scene-canvas--3d {
  position: relative;
  background: #05091a;
  border: 2px solid var(--se-border);
  border-radius: 12px;
  padding: 0;
  aspect-ratio: 5 / 3;
  overflow: hidden;
}

@media (max-width: 768px) {
  .se-scene-canvas--3d {
    aspect-ratio: 4 / 3;
  }
}

.se-scene-canvas--3d canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

/* SVG Element Animations */
.se-scene-svg [class*="se-anim-"] {
  transform-origin: center;
}

.se-scene-narration {
  background: var(--se-bg-card);
  border: 2px solid var(--se-border);
  border-radius: 12px;
  padding: var(--se-spacing-md);
  font-size: 1rem;
  line-height: 1.6;
  color: #333;
}

.se-scene-narration p {
  margin: 0;
}

/* Progress Dots */
.se-progress-dots {
  display: flex;
  justify-content: center;
  gap: var(--se-spacing-xs);
  padding: var(--se-spacing-md) 0;
}

.se-progress-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--se-border);
  background: transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
}

.se-progress-dot:hover {
  border-color: var(--se-accent);
}

.se-progress-dot.active {
  background: var(--se-accent);
  border-color: var(--se-accent);
  transform: scale(1.2);
}

/* Term Badges */
.se-term-badge {
  position: absolute;
  background: var(--se-accent);
  color: white;
  padding: var(--se-spacing-sm);
  border-radius: 8px;
  font-size: 0.875rem;
  max-width: 150px;
  opacity: 0;
  pointer-events: none;
  z-index: 10;
  border: 1px solid rgba(0, 0, 0, 0.15);
  transition: opacity var(--se-duration-short) ease;
}

.se-term-badge.visible {
  opacity: 1;
  pointer-events: auto;
}

.se-term-badge strong {
  display: block;
  font-weight: 700;
}

.se-term-badge p {
  margin: var(--se-spacing-xs) 0 0 0;
  font-size: 0.75rem;
  opacity: 0.9;
}

.se-term-emoji {
  font-size: 1.5rem;
  display: inline-block;
  margin-right: var(--se-spacing-xs);
}

/* Scene Navigation */
.se-scene-nav {
  display: flex;
  gap: var(--se-spacing-sm);
  justify-content: center;
  padding: var(--se-spacing-md) 0;
}

.se-scene-nav .dom-btn {
  flex: 1;
  max-width: 200px;
}

/* Nav buttons for 3D scenes on desktop */
@media (min-width: 1024px) {
  .se-scene-container:has(.se-scene-canvas--3d) .se-scene-nav {
    justify-content: flex-end;
    gap: var(--se-spacing-md);
    padding: var(--se-spacing-md);
  }

  .se-scene-container:has(.se-scene-canvas--3d) .se-scene-nav .dom-btn {
    max-width: 150px;
  }
}

/* ════════════════════════════════════════════════════════════════
   LAB SCREEN
   ════════════════════════════════════════════════════════════════ */

.se-lab-container {
  padding: var(--se-spacing-lg);
  max-width: 100%;
}

.se-lab-container h2 {
  text-align: center;
  color: var(--se-nav-bg);
  margin: 0 0 var(--se-spacing-sm) 0;
}

.se-lab-instruction {
  text-align: center;
  color: #666;
  margin: 0 0 var(--se-spacing-lg) 0;
  max-width: var(--se-max-width);
  margin-left: auto;
  margin-right: auto;
}

.se-lab-main {
  max-width: var(--se-max-width);
  margin: 0 auto var(--se-spacing-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--se-spacing-lg);
}

.se-lab-viewport {
  background: var(--se-bg-card);
  border: 2px solid var(--se-border);
  border-radius: 12px;
  padding: var(--se-spacing-md);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.se-lab-svg {
  width: 100%;
  height: 100%;
}

.se-lab-panel {
  display: flex;
  flex-direction: column;
  gap: var(--se-spacing-md);
}

.se-lab-controls {
  background: var(--se-bg-card);
  border: 2px solid var(--se-border);
  border-radius: 12px;
  padding: var(--se-spacing-md);
}

.se-lab-control {
  margin-bottom: var(--se-spacing-md);
}

.se-lab-control:last-child {
  margin-bottom: 0;
}

.se-control-label {
  display: flex;
  align-items: center;
  gap: var(--se-spacing-xs);
  margin-bottom: var(--se-spacing-xs);
  font-weight: 600;
  color: var(--se-nav-bg);
  font-size: 0.95rem;
}

.se-control-emoji {
  font-size: 1.25rem;
}

.se-control-name {
  flex: 1;
}

.se-control-value {
  font-size: 0.875rem;
  color: var(--se-accent);
  font-weight: 700;
}

.se-lab-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--se-border);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.se-lab-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--se-accent);
  cursor: pointer;
  transition: all 0.2s ease;
}

.se-lab-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  border: 1px solid rgba(0, 0, 0, 0.2);
}

.se-lab-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--se-accent);
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.se-lab-slider::-moz-range-thumb:hover {
  transform: scale(1.2);
  border: 1px solid rgba(0, 0, 0, 0.2);
}

.se-lab-toggle {
  width: 100%;
  padding: var(--se-spacing-sm) var(--se-spacing-md);
  border: 2px solid var(--se-border);
  border-radius: 8px;
  background: white;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.se-lab-toggle.on {
  background: var(--se-accent);
  color: white;
  border-color: var(--se-accent);
}

.se-lab-toggle.off {
  background: white;
  color: var(--se-nav-bg);
  border-color: #ccc;
}

.se-discoveries {
  min-height: 60px;
  display: flex;
  flex-direction: column;
  gap: var(--se-spacing-xs);
}

.se-discovery-toast {
  background: var(--se-accent2);
  color: white;
  padding: var(--se-spacing-sm);
  border-radius: 8px;
  font-size: 0.875rem;
  animation: se-float-up 0.3s ease-out;
}

/* ════════════════════════════════════════════════════════════════
   GLOSSARY SCREEN
   ════════════════════════════════════════════════════════════════ */

.se-glossary-container {
  padding: var(--se-spacing-lg);
  max-width: 100%;
}

.se-glossary-container h2 {
  text-align: center;
  color: var(--se-nav-bg);
  margin: 0 0 var(--se-spacing-lg) 0;
}

.se-glossary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--se-spacing-md);
  max-width: 900px;
  margin: 0 auto var(--se-spacing-lg);
}

.se-glossary-card {
  background: var(--se-bg-card);
  border: 2px solid var(--se-border);
  border-radius: 12px;
  padding: var(--se-spacing-md);
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}

.se-glossary-card:hover {
  border-color: var(--se-accent);
  transform: translateY(-4px);
}

.se-card-emoji {
  font-size: 2.5rem;
  margin-bottom: var(--se-spacing-sm);
}

.se-glossary-card h3 {
  margin: 0 0 var(--se-spacing-xs) 0;
  color: var(--se-nav-bg);
  font-size: 1rem;
}

.se-glossary-card p {
  margin: 0;
  color: #666;
  font-size: 0.875rem;
  line-height: 1.5;
}

.se-card-scene {
  display: block;
  margin-top: var(--se-spacing-xs);
  color: var(--se-accent);
  font-size: 0.75rem;
}

/* ════════════════════════════════════════════════════════════════
   QUIZ SCREEN
   ════════════════════════════════════════════════════════════════ */

.se-quiz-container {
  padding: var(--se-spacing-lg);
  max-width: var(--se-max-width);
  margin: 0 auto;
}

.se-quiz-progress {
  text-align: center;
  color: #999;
  font-size: 0.875rem;
  margin-bottom: var(--se-spacing-md);
}

.se-quiz-question {
  text-align: center;
  color: var(--se-nav-bg);
  margin: 0 0 var(--se-spacing-lg) 0;
  font-size: 1.25rem;
}

.se-quiz-options {
  display: flex;
  flex-direction: column;
  gap: var(--se-spacing-sm);
  margin-bottom: var(--se-spacing-lg);
}

.se-quiz-option {
  display: flex;
  align-items: center;
  gap: var(--se-spacing-md);
  padding: var(--se-spacing-md);
  border: 2px solid var(--se-border);
  border-radius: 12px;
  background: var(--se-bg-card);
  text-align: left;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1rem;
  font-weight: 500;
}

.se-quiz-option:hover:not(:disabled) {
  border-color: var(--se-accent);
  background: rgba(59, 130, 246, 0.05);
  transform: translateX(4px);
}

.se-quiz-option:disabled {
  cursor: default;
}

.se-quiz-option.correct {
  border-color: #4ade80;
  background: #dcfce7;
}

.se-quiz-option.wrong {
  border-color: #ef4444;
  background: #fee2e2;
  animation: se-shake 0.4s ease;
}

.se-option-letter {
  min-width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--se-accent);
  color: white;
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.875rem;
}

.se-quiz-option.correct .se-option-letter {
  background: #4ade80;
}

.se-quiz-option.wrong .se-option-letter {
  background: #ef4444;
}

.se-option-text {
  flex: 1;
}

.se-quiz-feedback {
  text-align: center;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.se-quiz-result {
  padding: var(--se-spacing-md);
  border-radius: 12px;
  animation: se-appear 0.3s ease-out;
}

.se-quiz-result.correct {
  background: #dcfce7;
  border: 2px solid #4ade80;
  color: #166534;
}

.se-quiz-result.wrong {
  background: #fee2e2;
  border: 2px solid #ef4444;
  color: #991b1b;
}

.se-quiz-result strong {
  display: block;
  margin-bottom: var(--se-spacing-xs);
}

.se-quiz-result p {
  margin: 0;
  font-size: 0.875rem;
}

/* ════════════════════════════════════════════════════════════════
   RESULTS SCREEN
   ════════════════════════════════════════════════════════════════ */

.se-results-container {
  padding: var(--se-spacing-lg);
  max-width: var(--se-max-width);
  margin: 0 auto;
  text-align: center;
}

.se-results-score {
  background: var(--se-bg-card);
  border: 2px solid var(--se-border);
  border-radius: 12px;
  padding: var(--se-spacing-xl);
  margin-bottom: var(--se-spacing-lg);
}

.se-score-number {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--se-accent);
  margin-bottom: var(--se-spacing-sm);
}

.se-score-percent {
  font-size: 1.5rem;
  color: #666;
}

.se-score-badge {
  font-size: 1.25rem;
  margin: var(--se-spacing-md) 0;
  animation: se-bounce-in 0.6s ease-out;
}

.se-results-message {
  background: var(--se-accent2);
  color: white;
  padding: var(--se-spacing-lg);
  border-radius: 12px;
  margin-bottom: var(--se-spacing-lg);
}

.se-results-message p {
  margin: 0 0 var(--se-spacing-sm) 0;
  line-height: 1.6;
}

.se-results-message p:last-child {
  margin-bottom: 0;
}

.se-message-small {
  font-size: 0.875rem;
}

/* ════════════════════════════════════════════════════════════════
   KEYFRAME ANIMATIONS
   ════════════════════════════════════════════════════════════════ */

@keyframes se-pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.08);
  }
}

@keyframes se-bounce-in {
  0% {
    opacity: 0;
    transform: scale(0.8);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes se-appear {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes se-float-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes se-grow-up {
  from {
    transform: scaleY(0);
    transform-origin: bottom center;
  }
  to {
    transform: scaleY(1);
    transform-origin: bottom center;
  }
}

@keyframes se-shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-4px);
  }
  75% {
    transform: translateX(4px);
  }
}

@keyframes se-spectrum {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

@keyframes se-spin-slow {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes se-ray-extend {
  from {
    stroke-dasharray: 100;
    stroke-dashoffset: 100;
  }
  to {
    stroke-dasharray: 100;
    stroke-dashoffset: 0;
  }
}

/* ════════════════════════════════════════════════════════════════
   ANIMATION CLASSES (applied to SVG elements)
   ════════════════════════════════════════════════════════════════ */

.se-anim-pulse {
  animation: se-pulse 1.5s ease-in-out infinite;
}

.se-anim-bounce-in {
  animation: se-bounce-in 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.se-anim-appear {
  animation: se-appear 0.6s ease-out both;
}

.se-anim-float-up {
  animation: se-float-up 1s ease-out both;
}

.se-anim-grow-up {
  animation: se-grow-up 1s ease-out both;
}

.se-anim-ray {
  animation: se-ray-extend 1.2s ease-in-out both;
}

.se-anim-spin {
  animation: se-spin-slow 8s linear infinite;
}

/* ════════════════════════════════════════════════════════════════
   RESPONSIVE DESIGN
   ════════════════════════════════════════════════════════════════ */

@media (max-width: 768px) {
  :root {
    --se-spacing-lg: 1.5rem;
    --se-spacing-xl: 2rem;
  }

  .se-landing h1 {
    font-size: 1.875rem;
  }

  .se-tagline {
    font-size: 1rem;
  }

  .se-lab-main {
    grid-template-columns: 1fr;
  }

  .se-glossary-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--se-spacing-sm);
  }

  .se-glossary-card {
    padding: var(--se-spacing-sm);
  }

  .se-glossary-card h3 {
    font-size: 0.95rem;
  }

  .se-glossary-card p {
    font-size: 0.8rem;
  }

  .se-card-emoji {
    font-size: 2rem;
    margin-bottom: var(--se-spacing-xs);
  }

  .se-quiz-question {
    font-size: 1.125rem;
  }

  .se-quiz-option {
    padding: var(--se-spacing-sm);
  }

  .se-option-letter {
    min-width: 28px;
    height: 28px;
    font-size: 0.8rem;
  }

  .se-results-score {
    padding: var(--se-spacing-lg);
  }

  .se-score-number {
    font-size: 2.5rem;
  }

  .se-score-badge {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  :root {
    --se-spacing-md: 1rem;
    --se-spacing-lg: 1rem;
  }

  .se-scene-canvas {
    padding: var(--se-spacing-sm);
  }

  .se-landing {
    padding: var(--se-spacing-md);
  }

  .se-landing h1 {
    font-size: 1.5rem;
  }

  .se-tagline {
    font-size: 0.95rem;
  }

  .se-hero-icon {
    font-size: 3.5rem;
  }

  .se-lab-viewport {
    aspect-ratio: auto;
    min-height: 250px;
  }

  .se-glossary-grid {
    grid-template-columns: 1fr;
  }

  .se-glossary-card {
    padding: var(--se-spacing-md);
  }

  .se-scene-nav {
    flex-direction: column;
  }

  .se-scene-nav .dom-btn {
    max-width: none;
  }

  .se-quiz-option {
    gap: var(--se-spacing-sm);
  }
}