/*
 * Filename: lesson.css
 * Version: 2.0.0
 * Description: Shared stylesheet for all interactive lessons.
 * Location: /seriously-scientific-theme/css/lesson.css
 * Palette: Cosmic Rust Supernova (matches style.css v3.2)
 */

/* ================================================================
   1. DESIGN TOKENS (matching style.css v3.2 exactly)
   ================================================================ */
:root {
  --ss-deep-space:         #1A0C08;
  --ss-lunar-rock:         #3D2318;
  --ss-martian-soil:       #795548;
  --ss-supernova:          #CD5A24;
  --ss-supernova-hover:    #A85420;
  --ss-supernova-light:    #D4742E;
  --ss-nebula:             #4A9FD4;
  --ss-amber:              #E29000;
  --ss-highlight-yellow:   #fadb67;
  --ss-starlight:          #F7FAFC;
  --ss-starlight-muted:    #E2E8F0;
  --ss-text:               #F7FAFC;
  --ss-text-muted:         #B8A99E;
  --ss-panel:              #3D2318;
  --ss-panel-border:       #5D3F30;
  --ss-success:            #68D391;
  --ss-danger:             #FC8181;

  --ss-deep-space-rgb:     26, 12, 8;
  --ss-lunar-rock-rgb:     61, 35, 24;
  --ss-supernova-rgb:      205, 90, 36;
  --ss-nebula-rgb:         74, 159, 212;

  --ss-measure:            65ch;
  --ss-gap:                clamp(16px, 2.5vw, 28px);
  --ss-radius-card:        12px;
  --ss-radius-btn:         8px;
  --ss-radius-pill:        25px;

  --ss-font-body:          'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --ss-font-display:       'Space Grotesk', 'Inter', -apple-system, sans-serif;

  --ss-focus:              0 0 0 2px var(--ss-deep-space), 0 0 0 4px var(--ss-nebula);

  /* 5E phase accents (orange + turquoise family only) */
  --ss-engage:             #CD5A24;
  --ss-explore:            #4A9FD4;
  --ss-explain:            #D4742E;
  --ss-elaborate:          #4A9FD4;
  --ss-evaluate:           #E29000;
}


/* ================================================================
   2. LESSON CONTAINER
   ================================================================ */
.ss-lesson {
  font-family: var(--ss-font-body);
  color: var(--ss-text);
  line-height: 1.7;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--ss-gap);
}

.ss-lesson *,
.ss-lesson *::before,
.ss-lesson *::after {
  box-sizing: border-box;
}


/* ================================================================
   3. LESSON HEADER (Bento Style)
   ================================================================ */

.ss-lesson-header {
  background: linear-gradient(145deg, var(--ss-lunar-rock), var(--ss-deep-space));
  border: 2px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2rem;
  position: relative;
  transition: all 0.3s ease;
  box-shadow: 4px 4px 0px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  text-align: left;
}

.ss-lesson-header:hover {
  border-color: var(--ss-supernova);
  box-shadow: 0 0 15px rgba(205, 90, 36, 0.3), 4px 4px 0px rgba(0, 0, 0, 0.8);
}

.ss-lesson-header__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.ss-lesson-header__badge {
  display: inline-block;
  font-family: 'Fira Code', monospace;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #000;
  background: var(--ss-highlight-yellow);
  padding: 4px 10px;
  border-radius: 4px;
  font-weight: bold;
}

.ss-lesson-header__title {
  font-family: var(--ss-font-display);
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--ss-text);
  margin: 0 0 0.5rem 0;
  line-height: 1.25;
}

/* Retro blinking terminal cursor */
.ss-lesson-header__title::after {
  content: '\25AE';
  animation: ss-pulse 1s infinite;
  color: var(--ss-nebula);
  margin-left: 8px;
}

.ss-lesson-header__meta {
  font-family: 'Fira Code', monospace;
  font-size: 0.85rem;
  color: var(--ss-text-muted);
  margin: 0;
}

.ss-lesson-header__meta strong {
  color: var(--ss-supernova-light);
}

/* Hover Reveal Logic for Description */
.ss-lesson-header__reveal {
  max-height: 0;
  opacity: 0;
  transition: all 0.4s ease;
  overflow: hidden;
  margin-top: 0;
}

.ss-lesson-header:hover .ss-lesson-header__reveal {
  max-height: 200px;
  opacity: 1;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px dashed rgba(255, 255, 255, 0.1);
}

.ss-lesson-header__lead {
  font-size: 1rem;
  max-width: 800px;
  margin: 0;
  line-height: 1.6;
  color: var(--ss-starlight-muted);
}


/* ================================================================
   4. SOUND TOGGLE (Retro Outline Style)
   ================================================================ */
.ss-sound-toggle {
  font-family: 'Fira Code', monospace;
  font-size: 0.8rem;
  font-weight: bold;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 36px;
  display: inline-block;
  margin: 0;
}

/* Sound OFF: orange outline */
.ss-sound-toggle {
  background: transparent;
  border: 2px solid var(--ss-supernova);
  color: var(--ss-supernova);
}

.ss-sound-toggle:hover {
  background: rgba(205, 90, 36, 0.1);
}

/* Sound ON: Solid Blue (Nebula) */
.ss-sound-toggle.is-on {
  background: var(--ss-nebula);
  border: 2px solid var(--ss-nebula);
  color: var(--ss-text);
}

.ss-sound-toggle.is-on:hover {
  background: var(--ss-supernova);
  border-color: var(--ss-supernova);
}


/* ================================================================
   5. PROGRESS BAR (Glass Instrument Panel)
   ================================================================ */
.ss-progress {
  position: sticky;
  /* Docks neatly under the main site navigation */
  top: calc(7rem + 2px); 
  z-index: 80; 
  
  /* HIGH TRANSPARENCY: The 0.4 makes the "glass" much clearer */
  background: rgba(var(--ss-deep-space-rgb), 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  
  border: 2px solid var(--ss-panel-border);
  border-top: none;
  border-radius: 0 0 12px 12px;
  padding: 15px 20px;
  margin-bottom: 3rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* Thicker progress track */
.ss-progress__bar {
  width: 100%;
  height: 10px;
  background: rgba(0, 0, 0, 0.6); /* Darker track for better contrast */
  border-radius: 5px;
  overflow: hidden;
  -webkit-appearance: none;
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* FIXED: Orange Supernova Fill (forced visibility) */
.ss-progress__bar::-webkit-progress-value {
  background: var(--ss-supernova) !important;
  box-shadow: 0 0 15px rgba(205, 90, 36, 0.8);
  transition: width 0.4s ease;
}

.ss-progress__bar::-moz-progress-bar {
  background: var(--ss-supernova) !important;
}

.ss-progress__label {
  font-family: 'Fira Code', monospace;
  font-size: 0.75rem;
  color: var(--ss-highlight-yellow);
  text-transform: uppercase;
  margin-top: 10px;
  text-align: center;
  letter-spacing: 1.5px;
}

.ss-progress__nav {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 15px;
  flex-wrap: wrap;
}

.ss-progress__nav-btn {
  font-family: 'Fira Code', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 4px;
  border: 1px solid var(--ss-panel-border);
  background: rgba(var(--ss-lunar-rock-rgb), 0.3);
  color: var(--ss-text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.ss-progress__nav-btn:hover {
  border-color: var(--ss-supernova);
  color: var(--ss-supernova);
  background: rgba(205, 90, 36, 0.2);
}

/* Active phase glows Nebula Blue to match the site's primary buttons */
.ss-progress__nav-btn.is-active {
  background: var(--ss-nebula);
  border-color: var(--ss-nebula);
  color: var(--ss-text);
  font-weight: bold;
  box-shadow: 0 0 15px rgba(var(--ss-nebula-rgb), 0.6);
}


/* ================================================================
   6. SECTIONS (5E phase cards)
   ================================================================ */
.ss-section {
  /* SCROLL OFFSET: Prevents header/progress bar from covering content */
  scroll-margin-top: 15rem; 

  margin-bottom: calc(var(--ss-gap) * 2);
  padding: var(--ss-gap);
  
  /* BENTO STYLE: Gradient + Subtle Border */
  background: linear-gradient(145deg, var(--ss-lunar-rock), var(--ss-deep-space));
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-left: 4px solid var(--ss-supernova);
  border-radius: var(--ss-radius-card);
  
  position: relative;
  transition: all 0.3s ease;
  box-shadow: 4px 4px 0px rgba(0, 0, 0, 0.5);
}

.ss-section:hover {
  border-color: var(--ss-supernova);
  box-shadow: 0 0 15px rgba(205, 90, 36, 0.2), 4px 4px 0px rgba(0, 0, 0, 0.6);
}

/* Eyebrow label using Fira Code for a technical readout look */
.ss-section__eyebrow {
  font-family: 'Fira Code', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
  display: block;
}

.ss-section--engage    { border-left-color: var(--ss-engage);    }
.ss-section--explore   { border-left-color: var(--ss-explore);   }
.ss-section--explain   { border-left-color: var(--ss-explain);   }
.ss-section--elaborate { border-left-color: var(--ss-elaborate); }
.ss-section--evaluate  { border-left-color: var(--ss-evaluate);  }
.ss-section--update    { border-left-color: var(--ss-amber);     }

/* ================================================================
   7. TYPOGRAPHY
   ================================================================ */
.ss-lesson h2,
.ss-lesson h3 {
  font-family: var(--ss-font-display);
  font-weight: 700;
  line-height: 1.25;
  margin-top: 0;
}

.ss-lesson h2 {
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  color: var(--ss-starlight);
  margin-bottom: 1rem;
}

.ss-lesson h3 {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--ss-starlight);
  margin-bottom: 0.75rem;
}

.ss-lesson p {
  font-size: 1.05rem;
  margin-bottom: 1rem;
  max-width: var(--ss-measure);
}

.ss-lesson strong {
  color: var(--ss-supernova-light);
  font-weight: 700;
}

.ss-lesson em {
  font-style: italic;
  color: var(--ss-text-muted);
}


/* ================================================================
   8. BUTTONS (Orange Default -> Blue Hover/Active)
   ================================================================ */
.ss-btn {
  font-family: var(--ss-font-display);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.65rem 1.5rem;
  border-radius: var(--ss-radius-btn);
  
  /* DEFAULT STATE: Orange Outline */
  border: 2px solid var(--ss-supernova);
  background: transparent;
  color: var(--ss-supernova);
  
  cursor: pointer;
  transition: all 0.25s ease;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* HOVER: Turn Blue with White (Starlight) text */
.ss-btn:hover:not(:disabled) {
  background: var(--ss-nebula);
  border-color: var(--ss-nebula);
  color: var(--ss-text);
  box-shadow: 0 0 15px rgba(74, 159, 212, 0.4);
  transform: translateY(-2px);
}

/* ACTIVATED/CLICKED: Stay Blue */
.ss-btn:active:not(:disabled),
.ss-btn.is-active {
  background: var(--ss-nebula) !important;
  border-color: var(--ss-nebula) !important;
  color: var(--ss-text) !important;
  box-shadow: 0 0 20px rgba(74, 159, 212, 0.6);
  transform: translateY(0);
}

/* Primary "Next" Buttons: Start as Solid Orange */
.ss-btn--filled {
  background: var(--ss-supernova);
  color: var(--ss-deep-space); /* Dark text on orange for contrast */
  border-color: var(--ss-supernova);
}

/* Hover on Solid Buttons: Switch to Blue */
.ss-btn--filled:hover:not(:disabled) {
  background: var(--ss-nebula);
  border-color: var(--ss-nebula);
  color: var(--ss-text);
}

.ss-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  border-color: var(--ss-panel-border);
  color: var(--ss-text-muted);
}

/* Navigation Row Styling */
.ss-nav-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: var(--ss-gap);
  padding-top: var(--ss-gap);
  border-top: 1px solid var(--ss-panel-border);
}
/* ================================================================
   9. CARDS
   ================================================================ */
.ss-card {
  background: linear-gradient(145deg, var(--ss-lunar-rock), var(--ss-deep-space));
  border: 1px solid var(--ss-panel-border);
  border-radius: var(--ss-radius-card);
  padding: 1.25rem;
  margin-bottom: var(--ss-gap);
  transition: box-shadow 0.3s ease;
}

.ss-card:hover {
  border-color: var(--ss-supernova);
  box-shadow: 0 8px 25px rgba(var(--ss-supernova-rgb), 0.2), 0 0 15px rgba(var(--ss-supernova-rgb), 0.1);
}

.ss-card h3 { margin-top: 0; }
.ss-card p { color: var(--ss-text-muted); }

.ss-card-grid {
  display: grid;
  gap: var(--ss-gap);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}


/* ================================================================
   10. TAP-TO-REVEAL
   ================================================================ */
.ss-reveal__trigger {
  font-family: var(--ss-font-display);
  font-size: 1rem;
  font-weight: 600;
  width: 100%;
  text-align: left;
  padding: 1.25rem;
  background: var(--ss-deep-space);
  border: 1px solid var(--ss-panel-border);
  border-radius: 8px;
  color: var(--ss-text);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.ss-reveal__trigger::after {
  content: '\002B'; /* Plus sign */
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ss-nebula);
  font-size: 1.2rem;
}

.ss-reveal__trigger:hover {
  border-color: var(--ss-highlight-yellow);
  background: rgba(250, 219, 103, 0.08);
  color: var(--ss-highlight-yellow);
}

.ss-reveal__body {
  padding: 1.25rem;
  margin-top: 4px;
  background: rgba(var(--ss-supernova-rgb), 0.06);
  border-radius: 0 0 8px 8px;
  border: 1px solid var(--ss-panel-border);
  border-top: none;
  border-left: 3px solid var(--ss-supernova);
  animation: ss-fadeIn 0.3s ease;
}

.ss-section--engage    .ss-reveal__body { border-left-color: var(--ss-engage);    background: rgba(var(--ss-supernova-rgb), 0.06); }
.ss-section--explore   .ss-reveal__body { border-left-color: var(--ss-explore);   background: rgba(var(--ss-nebula-rgb), 0.06); }
.ss-section--explain   .ss-reveal__body { border-left-color: var(--ss-explain);   background: rgba(var(--ss-supernova-rgb), 0.06); }
.ss-section--elaborate .ss-reveal__body { border-left-color: var(--ss-elaborate); background: rgba(var(--ss-nebula-rgb), 0.06); }
.ss-section--update    .ss-reveal__body { border-left-color: var(--ss-amber);     background: rgba(226, 144, 0, 0.06); }
.ss-section--evaluate  .ss-reveal__body { border-left-color: var(--ss-evaluate);  background: rgba(226, 144, 0, 0.06); }

/* ================================================================
   11. CONCEPT CARDS (expandable)
   ================================================================ */
.ss-concept-card {
  cursor: pointer;
  background: linear-gradient(145deg, var(--ss-lunar-rock), #4A2A15);
  border: 1px solid var(--ss-panel-border);
  border-radius: var(--ss-radius-card);
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
  overflow: hidden;
}

.ss-concept-card:hover {
  border-color: var(--ss-highlight-yellow);
  box-shadow: 0 0 0 1px var(--ss-highlight-yellow), 0 0 15px rgba(250, 219, 103, 0.3);
  background: rgba(250, 219, 103, 0.03);
}

.ss-concept-card.is-open {
  border-color: var(--ss-nebula);
  box-shadow: 0 0 0 2px var(--ss-nebula), 0 8px 25px rgba(var(--ss-nebula-rgb), 0.2);
}

.ss-concept-card__header {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  text-align: center;
  min-height: 180px;
}

.ss-concept-card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: 0.75rem;
}

.ss-concept-card__icon svg {
  width: 100%;
  height: 100%;
}

.ss-concept-card__hint {
  font-size: 0.8rem;
  color: var(--ss-text-muted);
  margin-top: 0.5rem;
  transition: color 0.2s ease;
}

.ss-concept-card.is-open .ss-concept-card__hint {
  color: var(--ss-nebula);
}

.ss-concept-card__body {
  padding: 0 1.5rem 1.5rem;
  border-top: 1px solid var(--ss-panel-border);
  animation: ss-fadeIn 0.3s ease;
}

.ss-concept-card__body[hidden] {
  display: none;
}

.ss-concept-card__body p {
  text-align: left;
  margin-top: 1rem;
}


/* ================================================================
   12. QUIZ
   ================================================================ */
.ss-quiz__question {
  font-family: var(--ss-font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--ss-starlight);
}

.ss-quiz__counter {
  font-size: 0.85rem;
  color: var(--ss-text-muted);
  margin-bottom: 0.5rem;
}

.ss-quiz__progress {
  width: 100%;
  height: 4px;
  background: rgba(var(--ss-deep-space-rgb), 0.6);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.ss-quiz__progress-fill {
  height: 100%;
  background: var(--ss-amber);
  border-radius: 2px;
  transition: width 0.4s ease;
}

.ss-quiz__options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ss-quiz__option {
  font-family: var(--ss-font-body);
  font-size: 1rem;
  width: 100%;
  text-align: left;
  padding: 0.85rem 1.25rem;
  background: var(--ss-deep-space);
  border: 2px solid var(--ss-panel-border);
  border-radius: var(--ss-radius-btn);
  color: var(--ss-text);
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  min-height: 44px;
}

.ss-quiz__option:hover:not(:disabled) {
  border-color: var(--ss-highlight-yellow);
  box-shadow: 0 0 0 1px var(--ss-highlight-yellow), 0 0 15px rgba(250, 219, 103, 0.3);
  background: rgba(250, 219, 103, 0.05);
}

.ss-quiz__option:focus-visible {
  outline: none;
  box-shadow: var(--ss-focus);
}

.ss-quiz__option:disabled { cursor: default; opacity: 0.75; }

.ss-quiz__option.is-correct {
  background: var(--ss-success) !important;
  border-color: var(--ss-success) !important;
  color: var(--ss-deep-space) !important;
  font-weight: 600;
}

.ss-quiz__option.is-incorrect {
  background: var(--ss-danger) !important;
  border-color: var(--ss-danger) !important;
  color: var(--ss-deep-space) !important;
}

.ss-quiz__feedback {
  margin-top: 1rem;
  min-height: 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
}

.ss-quiz__feedback.is-correct { color: var(--ss-success); }
.ss-quiz__feedback.is-incorrect { color: var(--ss-danger); }

.ss-quiz__results {
  text-align: center;
  padding: 2rem 1rem;
}

.ss-quiz__display {
  position: relative;
}

.ss-quiz__counter {
  position: absolute;
  top: -126px;
  right: 0;
  font-size: 1rem;
  font-weight: normal;
  color: var(--ss-amber);
  background: var(--ss-deep-space);
  padding: 4px 12px;
  border-radius: var(--ss-radius-card);
  border: 1px solid var(--ss-amber);
  text-transform: none;
  animation: ss-badge-pop 0.9s ease-in-out;
  transform-origin: center right;
}

@keyframes ss-badge-pop {
  0%   { transform: scale(1); border-color: var(--ss-amber); box-shadow: none; }
  45%  { transform: scale(1.08); border-color: var(--ss-amber); color: var(--ss-amber); box-shadow: 0 0 15px rgba(226, 144, 0, 0.5); }
  100% { transform: scale(1); border-color: var(--ss-amber); color: var(--ss-amber); box-shadow: none; }
}

@keyframes ss-quiz-flash {
  0%   { transform: scale(1); box-shadow: 4px 4px 0px rgba(0, 0, 0, 0.5); }
  30%  { transform: scale(1.02); box-shadow: 0 0 35px 8px rgba(250, 219, 103, 0.35), 4px 4px 0px rgba(0, 0, 0, 0.5); }
  100% { transform: scale(1); box-shadow: 4px 4px 0px rgba(0, 0, 0, 0.5); }
}

.ss-flash-update {
  animation: ss-quiz-flash 0.85s ease-in-out; 
  z-index: 10;
  position: relative;
  border-radius: var(--ss-radius-card);
}

/* --- EXACT REPLACEMENT HINT BOX --- */
.ss-quiz__hint-box {
  cursor: help;
  text-align: left;
}

.ss-quiz__hint-box h3 {
  color: var(--ss-starlight);
}

/* Override the default orange hover with the requested yellow outline */
.ss-quiz__hint-box:hover,
.ss-quiz__hint-box:focus-visible {
  border-color: var(--ss-highlight-yellow) !important;
  box-shadow: 0 0 15px rgba(250, 219, 103, 0.5) !important;
  outline: none;
}

.ss-quiz__hint-content {
  display: grid;
}

/* Stack the cover text and the actual hint text exactly on top of each other */
.ss-quiz__hint-cover,
.ss-quiz__hint-text {
  grid-area: 1 / 1;
  margin-bottom: 0 !important; 
  transition: opacity 0.25s ease;
}

.ss-quiz__hint-cover {
  color: var(--ss-text-muted);
  font-style: italic;
  opacity: 1;
}

/* Keep the hint text white/starlight and hidden by default */
.ss-quiz__hint-text {
  color: var(--ss-starlight);
  opacity: 0;
  pointer-events: none;
}

/* The swap effect */
.ss-quiz__hint-box:hover .ss-quiz__hint-cover,
.ss-quiz__hint-box:focus-visible .ss-quiz__hint-cover {
  opacity: 0;
}

.ss-quiz__hint-box:hover .ss-quiz__hint-text,
.ss-quiz__hint-box:focus-visible .ss-quiz__hint-text {
  opacity: 1;
}

/* ================================================================
   13. PREDICTION-THEN-REVEAL
   ================================================================ */
.ss-predict {
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--ss-panel-border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: var(--ss-gap);
}

.ss-predict__prompt {
  font-family: var(--ss-font-display);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--ss-starlight);
  margin-bottom: 1.25rem;
}

.ss-predict__choices {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 1rem;
}

.ss-predict__choice {
  font-family: 'Fira Code', monospace;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--ss-panel-border);
  border-radius: 6px;
  background: var(--ss-lunar-rock);
  color: var(--ss-text-muted);
  font-size: 0.85rem;
  transition: all 0.2s ease;
  cursor: pointer;
}

/* Hover: Yellow interactive flash */
.ss-predict__choice:hover:not(:disabled) {
  border-color: var(--ss-highlight-yellow);
  color: var(--ss-highlight-yellow);
  background: rgba(250, 219, 103, 0.1);
}

/* WRONG ANSWER: Soft Red */
.ss-predict__choice.is-wrong {
  background: var(--ss-danger) !important;
  border-color: var(--ss-danger) !important;
  color: var(--ss-deep-space) !important;
  box-shadow: 0 0 12px rgba(252, 129, 129, 0.4);
  font-weight: bold;
}

/* CORRECT ANSWER: Soft Green */
.ss-predict__choice.is-correct {
  background: var(--ss-success) !important;
  border-color: var(--ss-success) !important;
  color: var(--ss-deep-space) !important;
  box-shadow: 0 0 12px rgba(104, 211, 145, 0.4);
  font-weight: bold;
}

.ss-predict__reveal {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: rgba(var(--ss-nebula-rgb), 0.05);
  border-left: 3px solid var(--ss-nebula);
  border-radius: 4px;
  animation: ss-fadeIn 0.4s ease;
}

.ss-section--engage    .ss-predict__reveal { border-left-color: var(--ss-engage);    background: rgba(var(--ss-supernova-rgb), 0.06); }
.ss-section--explain   .ss-predict__reveal { border-left-color: var(--ss-explain);   background: rgba(var(--ss-supernova-rgb), 0.06); }
.ss-section--elaborate .ss-predict__reveal { border-left-color: var(--ss-elaborate); background: rgba(var(--ss-nebula-rgb), 0.06); }
.ss-section--update    .ss-predict__reveal { border-left-color: var(--ss-amber);     background: rgba(226, 144, 0, 0.06); }
.ss-section--evaluate  .ss-predict__reveal { border-left-color: var(--ss-evaluate);  background: rgba(226, 144, 0, 0.06); }

/* ================================================================
   14. DRAG-AND-DROP
   ================================================================ */
.ss-drag {
  display: flex;
  flex-direction: column;
  gap: var(--ss-gap);
}

@media (min-width: 640px) {
  .ss-drag { flex-direction: row; }
}

.ss-drag__pool {
  flex: 1;
  background: rgba(0, 0, 0, 0.15);
  border-radius: var(--ss-radius-card);
  padding: 1rem;
}

.ss-drag__pool-title {
  font-family: var(--ss-font-display);
  font-weight: 600;
  text-align: center;
  margin-bottom: 0.75rem;
}

.ss-drag__items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.ss-drag__item {
  font-family: var(--ss-font-body);
  font-size: 0.9rem;
  padding: 0.6rem 1rem;
  background: var(--ss-deep-space);
  border: 1px solid var(--ss-panel-border);
  border-radius: var(--ss-radius-btn);
  cursor: pointer;
  transition: transform 0.15s ease;
  user-select: none;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.ss-drag__item.is-selected {
  background: var(--ss-highlight-yellow);
  border-color: var(--ss-highlight-yellow);
  color: var(--ss-deep-space);
  font-weight: 600;
  box-shadow: 0 0 15px rgba(250, 219, 103, 0.5);
  transform: scale(1.05);
}

.ss-drag__item.is-placed {
  background: var(--ss-amber);
  border-color: var(--ss-amber);
  color: var(--ss-deep-space);
  font-weight: 600;
}

.ss-drag .ss-btn:hover:not(:disabled) {
  background: var(--ss-highlight-yellow);
  border-color: var(--ss-highlight-yellow);
  color: var(--ss-deep-space);
  box-shadow: 0 0 15px rgba(250, 219, 103, 0.4);
}

.ss-drag__item:focus-visible {
  outline: none;
  box-shadow: var(--ss-focus);
}

.ss-drag__slots {
  flex: 2;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ss-drag__slot {
  min-height: 50px;
  padding: 0.75rem 1rem;
  border: 2px dashed var(--ss-panel-border);
  border-radius: var(--ss-radius-btn);
  transition: border-color 0.2s ease;
  display: flex;
  align-items: center;
  gap: 10px;
}

.ss-drag__slot-label {
  font-weight: 600;
  color: var(--ss-text-muted);
  white-space: nowrap;
}

.ss-drag__slot.is-hover {
  border-color: var(--ss-supernova);
  background: rgba(var(--ss-supernova-rgb), 0.08);
}

.ss-drag__slot.is-correct {
  border-color: var(--ss-success);
  border-style: solid;
  background: rgba(104, 211, 145, 0.1);
}

.ss-drag__slot.is-incorrect {
  border-color: var(--ss-danger);
  border-style: solid;
  background: rgba(252, 129, 129, 0.1);
}


/* ================================================================
   15. PhET SIMULATION CONTAINER
   ================================================================ */
.ss-phet-intro {
  margin-top: calc(var(--ss-gap) * 3);
  padding-top: calc(var(--ss-gap) * 1.5);
  border-top: 1px solid var(--ss-panel-border);
}

.ss-phet {
  border: 2px solid var(--ss-panel-border);
  border-radius: var(--ss-radius-card);
  overflow: hidden;
  margin: var(--ss-gap) 0;
  background: #000;
}

.ss-phet__wrapper {
  position: relative;
}

.ss-phet__overlay {
  position: absolute;
  inset: 0;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.ss-phet__overlay::after {
  content: 'Click to interact with the simulation';
  background: rgba(var(--ss-deep-space-rgb), 0.75);
  color: var(--ss-starlight);
  font-family: var(--ss-font-display);
  font-size: 0.9rem;
  padding: 10px 20px;
  border-radius: var(--ss-radius-pill);
  border: 1px solid var(--ss-supernova);
  pointer-events: none;
}

.ss-phet__overlay.is-dismissed {
  display: none;
}

.ss-phet__wrapper {
  position: relative;
}

.ss-phet__overlay {
  position: absolute;
  inset: 0;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.ss-phet__overlay::after {
  content: 'Click to interact with the simulation';
  background: rgba(var(--ss-deep-space-rgb), 0.75);
  color: var(--ss-starlight);
  font-family: var(--ss-font-display);
  font-size: 0.9rem;
  padding: 10px 20px;
  border-radius: var(--ss-radius-pill);
  border: 1px solid var(--ss-supernova);
  pointer-events: none;
}

.ss-phet__overlay.is-dismissed {
  display: none;
}

.ss-phet iframe {
  width: 100%;
  height: 500px;
  border: none;
  display: block;
}

.ss-phet__caption {
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  color: var(--ss-text-muted);
  background: var(--ss-lunar-rock);
  text-align: center;
}


/* ================================================================
   16. FEEDBACK & STATUS
   ================================================================ */
.ss-feedback {
  margin-top: 0.75rem;
  min-height: 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  text-align: center;
}

.ss-feedback--success { color: var(--ss-success); }
.ss-feedback--error   { color: var(--ss-danger);  }
.ss-feedback--info    { color: var(--ss-nebula);   }

.ss-hint {
  padding: 0.75rem 1rem;
  margin-top: 0.75rem;
  background: rgba(var(--ss-supernova-rgb), 0.08);
  border-left: 3px solid var(--ss-amber);
  border-radius: 0;
  font-size: 0.95rem;
  animation: ss-fadeIn 0.3s ease;
}


/* ================================================================
   17. LAYOUT HELPERS
   ================================================================ */
.ss-grid {
  display: grid;
  gap: var(--ss-gap);
}

.ss-grid--2 { grid-template-columns: 1fr; }
.ss-grid--3 { grid-template-columns: 1fr; }

@media (min-width: 640px) {
  .ss-grid--2 { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 768px) {
  .ss-grid--3 { grid-template-columns: 1fr 1fr 1fr; }
}

.ss-text-center { text-align: center; }
.ss-mt { margin-top: var(--ss-gap); }
.ss-mb { margin-bottom: var(--ss-gap); }
.ss-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.ss-live {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}


/* ================================================================
   18. LESSON FOOTER - MISSION CONTROL FINAL
   ================================================================ */
.ss-lesson-footer {
  margin-top: 4rem;
  padding: 0;
  border: 2px solid var(--ss-panel-border);
  border-radius: 8px;
  background: linear-gradient(145deg, var(--ss-lunar-rock), var(--ss-deep-space));
  overflow: hidden;
  text-align: left; 
  transition: all 0.3s ease; /* NEW: Smooth transition for hover */
}

/* NEW: Bento Orange Hover Effect */
.ss-lesson-footer:hover {
  border-color: var(--ss-supernova);
  box-shadow: 0 0 30px rgba(205, 90, 36, 0.15);
}

.ss-footer-status-bar {
  background: rgba(255, 255, 255, 0.05);
  padding: 8px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  color: var(--ss-supernova);
  text-transform: uppercase;
  letter-spacing: 2px;
  display: flex; /* Aligns dot and text properly */
  justify-content: space-between;
}

/* NEW: Animated Green Status Dot */
.ss-status-dot {
  width: 8px;
  height: 8px;
  background: #4ade80;
  border-radius: 50%;
  display: inline-block;
  margin-right: 8px;
  box-shadow: 0 0 8px #4ade80;
  animation: ss-pulse-dot 2s infinite;
}

@keyframes ss-pulse-dot {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.4; }
}

.ss-footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.2fr;
  gap: 30px;
  padding: 30px;
}

/* Column Headers */
.ss-footer-col__label {
  font-size: 13px; 
  font-weight: 900;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 15px;
  display: block;
  letter-spacing: 1px;
}

/* Alignment Fix: Pushes both YouTube and Controls down equally */
.ss-footer-col:nth-child(2) .ss-footer-col__label,
.ss-footer-col:last-child .ss-footer-col__label {
  margin-bottom: 30px; 
}

/* Alignments */
.ss-footer-alignment-item {
  margin-bottom: 10px;
  background: rgba(205, 90, 36, 0.08);
  border: 1px solid rgba(205, 90, 36, 0.25);
  border-radius: 6px;
  padding: 12px 14px;
  transition: border-color 0.2s, background 0.2s;
}
.ss-footer-alignment-item:hover {
  border-color: rgba(205, 90, 36, 0.5);
  background: rgba(205, 90, 36, 0.12);
}
.ss-footer-alignment-item strong {
  color: var(--ss-supernova);
  display: block;
  font-size: 12px;
  text-align: left;
  margin-bottom: 4px;
  letter-spacing: 0.5px;
}
.ss-footer-alignment-item p {
  color: var(--ss-text-muted);
  font-size: 11px;
  margin: 0;
  line-height: 1.4;
  text-align: left;
}

/* YouTube Card */
.ss-yt-card {
  border: 2px solid #ff0000;
  background: rgba(255, 0, 0, 0.03);
  border-radius: 6px;
  padding: 15px;
  text-decoration: none !important;
  display: block;
  transition: background 0.2s;
}

.ss-yt-card:hover { background: rgba(255, 0, 0, 0.1); }
.ss-yt-count { font-size: 24px; font-weight: 900; color: white; display: block; }

.ss-support-placeholder {
  border: 2px dashed rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  padding: 18px 15px;
  text-align: center;
  margin-top: 15px;
  transition: border-color 0.2s;
}
.ss-support-placeholder:hover {
  border-color: rgba(255, 255, 255, 0.3);
}
.ss-support-placeholder__icon {
  font-size: 20px;
  margin-bottom: 6px;
}
.ss-support-placeholder__text {
  display: block;
  color: rgba(255, 255, 255, 0.5);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.ss-support-placeholder__sub {
  display: block;
  color: rgba(255, 255, 255, 0.3);
  font-size: 10px;
  margin-top: 4px;
  line-height: 1.3;
}

/* Station Control Buttons */
.ss-footer-actions { display: flex; flex-direction: column; gap: 10px; }

.ss-btn.ss-btn--panel-reset {
  background: var(--ss-highlight-yellow); 
  border-color: var(--ss-highlight-yellow);
  color: var(--ss-deep-space); 
  font-weight: 700;
  text-transform: uppercase;
}
.ss-btn.ss-btn--panel-reset:hover:not(:disabled) { 
  background: #fff; 
  border-color: #fff;
  color: var(--ss-deep-space);
  box-shadow: 0 0 15px rgba(250, 219, 103, 0.6); 
}

.ss-btn--panel-classroom {
  background: #188038; 
  color: white;
  padding: 16px;
  font-weight: 900;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
}

.ss-btn--panel-share {
  background: var(--ss-supernova);
  color: white;
  padding: 16px;
  font-weight: 900;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}
.ss-btn--panel-share:hover { background: var(--ss-supernova-hover); }

.ss-btn--panel-tpt {
  background: #115740; 
  color: white;
  padding: 16px;
  font-weight: 900;
  text-transform: uppercase;
  border: none;
  text-align: center;
  text-decoration: none !important;
  display: block;
  transition: background 0.2s;
}
.ss-btn--panel-tpt:hover { background: #0c3d2c; }

/* Feedback Button */
.ss-btn--panel-feedback {
  background: transparent;
  border: 2px solid var(--ss-nebula);
  color: var(--ss-nebula);
  padding: 14px;
  font-weight: 900;
  text-transform: uppercase;
  text-align: center;
  display: block;
  border-radius: 6px;
  text-decoration: none !important;
  margin-top: 15px; 
  transition: all 0.2s ease;
}
.ss-btn--panel-feedback:hover {
  background: rgba(74, 159, 212, 0.1);
  box-shadow: 0 0 15px rgba(74, 159, 212, 0.3);
}

@media (max-width: 900px) { .ss-footer-grid { grid-template-columns: 1fr; } }
/* ================================================================
   19. ANIMATIONS
   ================================================================ */
@keyframes ss-fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes ss-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.6; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}


/* ================================================================
   20. PRINT
   ================================================================ */
@media print {
  .ss-lesson { color: #000; background: #fff; max-width: 100%; }

  .ss-section {
    background: #fff;
    border: 1px solid #ccc;
    border-left-width: 4px;
    break-inside: avoid;
  }

  .ss-progress, .ss-nav-row, .ss-sound-toggle,
  .ss-lesson-footer button, .ss-phet { display: none !important; }

  .ss-lesson h2, .ss-lesson h3, .ss-lesson strong { color: #000; }
}


/* ================================================================
   21. NO-JS
   ================================================================ */
noscript .ss-reveal__body,
noscript .ss-predict__reveal {
  display: block !important;
}