/* ===== RESET & VARIABLES ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#4A90D9;
  --primary-light:#E8F0FE;
  --primary-dark:#2D6CB5;
  --success:#27AE60;
  --success-light:#E8F8EF;
  --error:#E74C3C;
  --error-light:#FDE8E6;
  --warning:#F5A623;
  --bg:#F4F6F9;
  --surface:#FFFFFF;
  --text:#1A1A2E;
  --text-secondary:#6B7280;
  --border:#E5E7EB;
  --radius:14px;
  --radius-sm:10px;
  --radius-lg:20px;
  --shadow:0 2px 12px rgba(0,0,0,0.06);
  --shadow-lg:0 8px 30px rgba(0,0,0,0.10);
  --transition:0.3s cubic-bezier(0.4,0,0.2,1);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Noto Sans",sans-serif;
  --safe-bottom:env(safe-area-inset-bottom,0px);
}
html{font-size:16px;-webkit-tap-highlight-color:transparent}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100dvh;overflow-x:hidden;-webkit-font-smoothing:antialiased}

/* Keyboard focus */
:focus{outline:none}
:focus-visible{
  outline:3px solid var(--primary);
  outline-offset:3px;
  border-radius:var(--radius-sm);
}

/* ===== SCREENS ===== */
.screen{display:none;min-height:100dvh;animation:fadeIn .4s ease}
.screen.active{display:flex;flex-direction:column}
@keyframes fadeIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

/* ===== HOME ===== */
.home-container{flex:1;display:flex;flex-direction:column;padding:24px 20px calc(24px + var(--safe-bottom));max-width:480px;margin:0 auto;width:100%}
.home-topbar{display:flex;justify-content:flex-end}
.home-hero{text-align:center;padding:32px 0 24px}
.home-icon svg{width:72px;height:72px}
.home-title{font-size:2rem;font-weight:800;letter-spacing:-0.02em;margin-top:8px;color:var(--text)}
.home-subtitle{font-size:1rem;color:var(--primary);font-weight:600;margin-top:2px}
.home-desc{font-size:0.85rem;color:var(--text-secondary);margin-top:8px}
.home-section{margin-top:20px}
.section-label{font-size:0.8rem;font-weight:700;color:var(--text-secondary);text-transform:uppercase;letter-spacing:0.04em;margin-bottom:10px}

.btn-ghost{
  padding:10px 14px;border-radius:999px;
  border:2px solid var(--border);background:var(--surface);
  font-size:0.85rem;font-weight:700;color:var(--text-secondary);
  cursor:pointer;transition:var(--transition);box-shadow:var(--shadow);
}

/* Category chips */
.category-list{display:flex;flex-wrap:wrap;gap:8px}
.cat-chip{
  padding:8px 16px;border-radius:99px;border:2px solid var(--border);
  background:var(--surface);font-size:0.85rem;font-weight:600;
  cursor:pointer;transition:var(--transition);user-select:none;
  display:flex;align-items:center;gap:6px;
}
.cat-chip.active{border-color:var(--primary);background:var(--primary);color:#fff}
.cat-chip .chip-count{
  font-size:0.7rem;background:rgba(0,0,0,0.08);
  padding:2px 7px;border-radius:99px;font-weight:700;
}
.cat-chip.active .chip-count{background:rgba(255,255,255,0.25)}

/* Count selector */
.count-selector{display:flex;gap:8px}
.count-btn{
  flex:1;padding:10px;border-radius:var(--radius-sm);border:2px solid var(--border);
  background:var(--surface);font-size:0.9rem;font-weight:700;
  cursor:pointer;transition:var(--transition);
}
.count-btn.active{border-color:var(--primary);background:var(--primary);color:#fff}

/* Primary button */
.btn-primary{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;padding:16px;margin-top:24px;
  border:none;border-radius:var(--radius);
  background:var(--primary);color:#fff;
  font-size:1.1rem;font-weight:700;cursor:pointer;
  transition:var(--transition);box-shadow:0 4px 16px rgba(74,144,217,0.3);
}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-primary:disabled{opacity:0.5;cursor:not-allowed;box-shadow:none}

.btn-secondary{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;padding:14px;
  border:2px solid var(--border);border-radius:var(--radius);
  background:var(--surface);color:var(--text);
  font-size:1rem;font-weight:600;cursor:pointer;
  transition:var(--transition);
}

/* Hover states (only on devices that actually support hover).
   This avoids "sticky hover" on touch devices that can look like pre-selected UI. */
@media (hover:hover) and (pointer:fine){
  .btn-ghost:hover{border-color:var(--primary);background:var(--primary-light);color:var(--primary)}
  .cat-chip:hover{border-color:var(--primary);background:var(--primary-light)}
  .count-btn:hover{border-color:var(--primary)}
  .btn-primary:not(:disabled):hover{background:var(--primary-dark);transform:translateY(-1px)}
  .btn-secondary:hover{border-color:var(--primary);background:var(--primary-light)}
}

/* Stats */
.home-stats{
  margin-top:auto;padding-top:20px;
  display:flex;gap:12px;justify-content:center;
}
.stat-card{
  flex:1;background:var(--surface);border-radius:var(--radius-sm);
  padding:14px;text-align:center;box-shadow:var(--shadow);
}
.stat-num{font-size:1.4rem;font-weight:800;color:var(--primary)}
.stat-label{font-size:0.7rem;color:var(--text-secondary);margin-top:2px;font-weight:600}

/* Home load error */
.error-box{
  width:100%;
  background:var(--error-light);
  border-left:4px solid var(--error);
  border-radius:var(--radius);
  padding:16px 18px;
  box-shadow:var(--shadow);
}
.error-title{font-size:1.1rem;font-weight:800;color:var(--error)}
.error-message{font-size:0.9rem;color:var(--text-secondary);margin-top:6px;line-height:1.5}

/* ===== AUTH ===== */
.auth-container{flex:1;display:flex;flex-direction:column;padding:24px 20px calc(24px + var(--safe-bottom));max-width:480px;margin:0 auto;width:100%}
.auth-hero{text-align:center;padding:32px 0 18px}
.auth-title{font-size:1.8rem;font-weight:900;letter-spacing:-0.02em;margin-top:10px}
.auth-subtitle{font-size:0.9rem;color:var(--text-secondary);margin-top:8px}
.auth-card{
  background:var(--surface);border-radius:var(--radius-lg);
  padding:20px 18px;box-shadow:var(--shadow-lg);
  display:flex;flex-direction:column;gap:10px;
}
.auth-label{font-size:0.8rem;font-weight:800;color:var(--text-secondary);margin-top:6px}
.auth-input{
  width:100%;
  padding:12px 12px;border-radius:var(--radius-sm);
  border:2px solid var(--border);background:#fff;
  font-size:1rem;transition:var(--transition);
}
.auth-input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(74,144,217,0.18)}
.auth-error{
  min-height:1.2em;
  color:var(--error);font-size:0.85rem;font-weight:700;line-height:1.4;
}

/* Category hint */
.category-hint{
  font-size:0.85rem;
  color:var(--error);
  text-align:center;
  margin-top:20px;
  font-weight:800;
}

/* ===== QUIZ ===== */
.quiz-container{flex:1;display:flex;flex-direction:column;max-width:520px;margin:0 auto;width:100%;padding:0 16px}

/* Header */
.quiz-header{
  display:flex;align-items:center;gap:12px;
  padding:12px 0;position:sticky;top:0;z-index:10;
  background:var(--bg);
}
.btn-icon{
  width:40px;height:40px;border-radius:50%;border:none;
  background:var(--surface);display:flex;align-items:center;justify-content:center;
  cursor:pointer;color:var(--text-secondary);transition:var(--transition);
  box-shadow:var(--shadow);flex-shrink:0;
}
.quiz-progress-wrap{flex:1;display:flex;flex-direction:column;gap:4px;align-items:center}
.quiz-progress-bar{width:100%;height:6px;background:var(--border);border-radius:99px;overflow:hidden}
.quiz-progress-fill{height:100%;background:var(--primary);border-radius:99px;transition:width .5s cubic-bezier(0.4,0,0.2,1)}
.quiz-progress-text{font-size:0.75rem;font-weight:700;color:var(--text-secondary)}

/* Language toggle */
.btn-lang{
  width:40px;height:40px;border-radius:50%;border:2px solid var(--primary);
  background:var(--primary-light);color:var(--primary);
  font-size:0.7rem;font-weight:800;cursor:pointer;
  transition:var(--transition);flex-shrink:0;
}

/* Card */
.quiz-body{flex:1;display:flex;flex-direction:column;justify-content:center;padding:8px 0}
.quiz-card{
  background:var(--surface);border-radius:var(--radius-lg);
  padding:28px 24px;box-shadow:var(--shadow-lg);
  position:relative;
  animation:cardIn .4s ease;
}
@keyframes cardIn{from{opacity:0;transform:scale(0.95) translateY(16px)}to{opacity:1;transform:scale(1) translateY(0)}}
.card-category{
  display:inline-block;font-size:0.7rem;font-weight:700;
  color:var(--primary);background:var(--primary-light);
  padding:4px 12px;border-radius:99px;margin-bottom:16px;
}
.card-question{font-size:1.2rem;font-weight:700;line-height:1.8;word-break:break-word;letter-spacing:0.05em}
.card-illustration{margin-top:16px;text-align:center}
.card-illustration svg{max-width:280px;width:100%;height:auto}
.card-illustration:empty{display:none}

/* Speak button */
.btn-speak{
  position:absolute;top:16px;right:16px;
  width:38px;height:38px;border-radius:50%;border:none;
  background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:var(--transition);
}
.btn-speak.speaking{animation:pulse 1s infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.12)}}

/* Feedback */
.quiz-feedback{
  margin-top:16px;padding:18px 20px;border-radius:var(--radius);
  animation:slideUp .35s ease;
}
.quiz-feedback.hidden{display:none}
.quiz-feedback.correct{background:var(--success-light);border-left:4px solid var(--success)}
.quiz-feedback.wrong{background:var(--error-light);border-left:4px solid var(--error)}
@keyframes slideUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.feedback-icon{font-size:1.2rem;margin-bottom:4px}
.feedback-answer{font-size:0.9rem;font-weight:700}
.feedback-explanation{font-size:0.85rem;color:var(--text-secondary);margin-top:4px;line-height:1.5}

/* Answer buttons */
.quiz-actions{padding:16px 0 calc(20px + var(--safe-bottom))}
.answer-buttons{display:flex;gap:16px}
.btn-answer{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;
  padding:18px 12px;border-radius:var(--radius-lg);border:3px solid var(--border);
  background:var(--surface);cursor:pointer;
  /* Neutral at-rest visuals. Color is applied only on feedback states. */
  --answer-icon:var(--text-secondary);
  --answer-label:var(--text);
  font-size:0.9rem;font-weight:700;color:var(--answer-label);
  transition:var(--transition);box-shadow:var(--shadow);
  touch-action:manipulation;
  -webkit-tap-highlight-color:transparent;
}
.btn-answer:active{transform:scale(0.96)}
.btn-answer.is-pressing{transform:scale(0.97)}
.btn-answer:disabled{opacity:1}
.btn-answer span{color:inherit}
.btn-answer svg{color:var(--answer-icon)}

.btn-answer.selected-correct{
  border-color:var(--success);background:var(--success-light);
  --answer-icon:var(--success);
  --answer-label:var(--success);
  animation:popCorrect .4s ease;
}
.btn-answer.selected-wrong{
  border-color:var(--error);background:var(--error-light);
  --answer-icon:var(--error);
  --answer-label:var(--error);
  animation:shake .4s ease;
}
.btn-answer.dimmed{
  opacity:0.35;
  pointer-events:none;
  --answer-icon:var(--text-secondary);
  --answer-label:var(--text-secondary);
}
@keyframes popCorrect{0%{transform:scale(1)}30%{transform:scale(1.08)}100%{transform:scale(1)}}
@keyframes shake{0%,100%{transform:translateX(0)}20%{transform:translateX(-6px)}40%{transform:translateX(6px)}60%{transform:translateX(-4px)}80%{transform:translateX(4px)}}

.btn-next{margin-top:12px}
.btn-next.hidden{display:none}

/* ===== RESULT ===== */
.result-container{flex:1;display:flex;flex-direction:column;padding:24px 20px calc(24px + var(--safe-bottom));max-width:480px;margin:0 auto;width:100%;animation:fadeIn .5s ease}
.result-hero{text-align:center;padding-top:24px}
.result-emoji{font-size:3.5rem;animation:bounceIn .6s ease}
@keyframes bounceIn{0%{transform:scale(0);opacity:0}50%{transform:scale(1.2)}100%{transform:scale(1);opacity:1}}
.result-title{font-size:1.5rem;font-weight:800;margin-top:8px}
.result-subtitle{font-size:0.9rem;color:var(--text-secondary);margin-top:4px}

/* Score ring */
.result-score-ring{position:relative;width:140px;height:140px;margin:24px auto}
.score-ring-svg{width:100%;height:100%}
#score-ring{transition:stroke-dashoffset 1.2s cubic-bezier(0.4,0,0.2,1) 0.3s}
.score-ring-text{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:2px;
}
.score-num{font-size:2.2rem;font-weight:800;color:var(--primary)}
.score-sep{font-size:1.2rem;color:var(--text-secondary);font-weight:300}
.score-den{font-size:1.2rem;color:var(--text-secondary);font-weight:600}

/* Result details */
.result-details{margin-top:16px;display:flex;flex-direction:column;gap:8px;flex:1;overflow-y:auto;max-height:40vh}
.result-item{
  display:flex;align-items:center;gap:12px;
  padding:12px 16px;background:var(--surface);
  border-radius:var(--radius-sm);box-shadow:var(--shadow);
  font-size:0.85rem;line-height:1.4;
}
.result-item-icon{font-size:1.3rem;flex-shrink:0}
.result-item-text{flex:1;font-weight:500}
.result-item.correct{border-left:3px solid var(--success)}
.result-item.wrong{border-left:3px solid var(--error)}
.result-actions{margin-top:auto;padding-top:20px;display:flex;flex-direction:column;gap:10px}

/* ===== RESPONSIVE ===== */
@media(min-width:600px){
  html{font-size:17px}
  .home-container,.quiz-container,.result-container{padding-left:32px;padding-right:32px}
  .quiz-card{padding:36px 32px}
  .card-question{font-size:1.3rem}
}
@media(min-width:900px){
  html{font-size:18px}
  .home-container{max-width:540px}
  .quiz-container{max-width:600px}
  .result-container{max-width:540px}
}

/* ===== UTILITIES ===== */
.hidden{display:none!important}

/* Smooth language switch */
.lang-switch{animation:langSwitch .25s ease}
@keyframes langSwitch{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}

/* Confetti burst on perfect score */
.confetti-particle{
  position:fixed;width:8px;height:8px;border-radius:2px;
  pointer-events:none;z-index:999;animation:confettiFall 1.8s ease forwards;
}
@keyframes confettiFall{
  0%{opacity:1;transform:translateY(0) rotate(0deg) scale(1)}
  100%{opacity:0;transform:translateY(100vh) rotate(720deg) scale(0.3)}
}

/* ===== MOBILE UI ENHANCEMENTS ===== */

/* Swipe hint overlay */
.swipe-hint{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  font-size:2rem;
  opacity:0;
  pointer-events:none;
  transition:opacity 0.3s ease;
  z-index:5;
}
.swipe-hint.left{left:20px}
.swipe-hint.right{right:20px}
.swipe-hint.show{opacity:0.5}

/* Bottom sheet for answers (touch devices: phones + tablets) */
@media(hover:none) and (pointer:coarse){
  :root{
    /* Rough height of the fixed answer sheet; used to keep content visible above it. */
    --answer-sheet-h: 230px;
  }

  .quiz-container{
    padding:0;
    max-width:100%;
  }
  
  .quiz-header{
    padding:12px 16px;
    background:var(--bg);
  }
  
  .quiz-body{
    padding:8px 16px;
    flex:1;
    display:flex;
    flex-direction:column;
    justify-content:flex-start;
    padding-top:20px;
    padding-bottom:calc(var(--answer-sheet-h) + var(--safe-bottom));
  }
  
  .quiz-card{
    margin:0;
    border-radius:var(--radius-lg);
    min-height:50vh;
    display:flex;
    flex-direction:column;
    justify-content:center;
    touch-action:pan-y;
    user-select:none;
    -webkit-user-select:none;
    cursor:grab;
  }
  
  .quiz-card:active{
    cursor:grabbing;
  }
  
  /* Fixed bottom answer sheet */
  .quiz-actions{
    position:fixed;
    bottom:0;
    left:0;
    right:0;
    background:var(--surface);
    padding:16px 20px calc(20px + var(--safe-bottom));
    box-shadow:0 -4px 20px rgba(0,0,0,0.08);
    border-radius:var(--radius-lg) var(--radius-lg) 0 0;
    z-index:100;
  }

  /* Keep the explanation/feedback visible above the fixed answer sheet. */
  .quiz-feedback{
    position:fixed;
    left:16px;
    right:16px;
    bottom:calc(var(--answer-sheet-h) - 24px + var(--safe-bottom));
    z-index:120;
    margin-top:0;
    box-shadow:var(--shadow-lg);
    max-height:30vh;
    overflow-y:auto;
  }

  .answer-buttons{
    gap:12px;
  }
  
  .btn-answer{
    padding:20px 12px;
    border-radius:var(--radius);
  }
  
  .btn-answer svg{
    width:56px;
    height:56px;
  }
  
  .btn-next{
    margin-top:12px;
    margin-bottom:0;
  }
  
}

/* Language indicator popup */
.lang-indicator-popup{
  position:fixed;
  top:50%;
  left:50%;
  transform:translate(-50%, -50%) scale(0.8);
  background:rgba(74,144,217,0.95);
  color:#fff;
  font-size:3rem;
  font-weight:800;
  padding:20px 40px;
  border-radius:var(--radius-lg);
  opacity:0;
  transition:all 0.3s cubic-bezier(0.4,0,0.2,1);
  z-index:1000;
  pointer-events:none;
  box-shadow:0 8px 32px rgba(74,144,217,0.4);
}

.lang-indicator-popup.show{
  opacity:1;
  transform:translate(-50%, -50%) scale(1);
}

/* Explanation modal */
.explanation-modal{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,0.6);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:20px;
  z-index:1000;
  opacity:0;
  animation:fadeIn 0.3s ease forwards;
}

.explanation-modal.closing{
  animation:fadeOut 0.3s ease forwards;
}

@keyframes fadeOut{
  from{opacity:1}
  to{opacity:0}
}

.explanation-content{
  background:var(--surface);
  border-radius:var(--radius-lg);
  width:100%;
  max-width:400px;
  max-height:80vh;
  overflow:hidden;
  box-shadow:var(--shadow-lg);
  animation:slideUp 0.3s ease;
}

.explanation-header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:16px 20px;
  background:var(--primary-light);
  border-bottom:1px solid var(--border);
}

.explanation-title{
  font-size:1.1rem;
  font-weight:700;
  color:var(--primary);
}

.explanation-close{
  width:32px;
  height:32px;
  border:none;
  background:transparent;
  font-size:1.5rem;
  color:var(--text-secondary);
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  transition:var(--transition);
}

.explanation-text{
  padding:20px;
  font-size:1rem;
  line-height:1.7;
  color:var(--text);
  overflow-y:auto;
  max-height:50vh;
}

/* Card swipe animation */
.quiz-card.swiping{
  transition:none;
}

/* Touch action for card */
.quiz-card{
  touch-action:pan-y pinch-zoom;
  transform-style:preserve-3d;
  transition:transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  will-change:transform;
}

/* Card grabbing state */
.quiz-card.grabbing{
  transform:scale(0.98);
  box-shadow:0 12px 40px rgba(0,0,0,0.15);
  transition:transform 0.1s ease, box-shadow 0.1s ease;
}

/* Card content for parallax effect */
.quiz-card .card-question,
.quiz-card .card-category,
.quiz-card .card-illustration{
  transition:transform 0.1s ease-out;
  will-change:transform;
}

/* Card returning animation (spring effect) */
.quiz-card.returning{
  transition:transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) !important;
}

/* Card flip animation for language toggle */
.quiz-card.flipping{
  animation:cardFlip 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes cardFlip{
  0%{
    transform:rotateY(0deg) scale(1);
  }
  50%{
    transform:rotateY(90deg) scale(0.9);
  }
  100%{
    transform:rotateY(0deg) scale(1);
  }
}

/* Swipe progress indicator */
.swipe-progress{
  position:absolute;
  bottom:0;
  left:50%;
  transform:translateX(-50%);
  width:0%;
  height:3px;
  background:var(--primary);
  border-radius:99px;
  opacity:0;
  transition:opacity 0.2s ease;
}

.swipe-progress.show{
  opacity:1;
}

/* Direction indicator during swipe */
.swipe-direction{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  font-size:0.75rem;
  font-weight:700;
  color:var(--primary);
  background:var(--primary-light);
  padding:4px 12px;
  border-radius:99px;
  opacity:0;
  transition:opacity 0.2s ease;
  pointer-events:none;
  z-index:10;
}

.swipe-direction.left{
  left:12px;
}

.swipe-direction.right{
  right:12px;
}

.swipe-direction.show{
  opacity:1;
}

/* Flip hint overlay */
.flip-hint{
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%, -50%);
  background:rgba(74,144,217,0.9);
  color:#fff;
  padding:8px 16px;
  border-radius:99px;
  font-size:0.8rem;
  font-weight:600;
  opacity:0;
  pointer-events:none;
  transition:opacity 0.3s ease;
  z-index:10;
  white-space:nowrap;
}

.flip-hint.show{
  opacity:1;
}

/* Language indicator on card */
.card-lang-indicator{
  position:absolute;
  top:16px;
  left:16px;
  background:var(--primary-light);
  color:var(--primary);
  font-size:0.65rem;
  font-weight:800;
  padding:4px 10px;
  border-radius:99px;
  z-index:5;
  transition:all 0.3s ease;
}

/* Flip icon hint */
.flip-icon{
  position:absolute;
  top:16px;
  right:44px;
  width:20px;
  height:20px;
  opacity:0.4;
  z-index:5;
}

.flip-icon svg{
  width:100%;
  height:100%;
  fill:var(--text-secondary);
}

@media (prefers-reduced-motion: reduce){
  *{
    animation-duration:0.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:0.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* Mobile-specific tap highlight */
@media(pointer:coarse){
  .btn-answer:active{
    transform:scale(0.96);
  }
  
  .cat-chip:active{
    transform:scale(0.98);
  }
  
  .btn-primary:active{
    transform:translateY(2px);
  }
}

@media (hover:hover) and (pointer:fine){
  .btn-icon:hover{background:var(--error-light);color:var(--error)}
  .btn-lang:hover{background:var(--primary);color:#fff}
  .btn-speak:hover{background:var(--primary);color:#fff}
  .explanation-close:hover{background:var(--error-light);color:var(--error)}
}