/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  font-family: 'Noto Sans JP', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  color: #fff;
  background: #0a0508;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

/* ===== CSS VARIABLES ===== */
:root {
  --space-deep:  #0a0508;
  --space-mid:   #130a10;
  --space-light: #1e1020;
  --neon-blue:   #00b4d8;
  --neon-cyan:   #48cae4;
  --neon-green:  #06d6a0;
  --neon-purple: #9b59b6;
  --gold:        #f4d03f;
  --white:       #ffffff;
  --glass:       rgba(255,255,255,0.06);
  --glass-border:rgba(255,255,255,0.12);
  --text-soft:   rgba(255,255,255,0.65);
  --radius:      16px;
  --radius-lg:   24px;
  --shadow:      0 8px 32px rgba(0,0,0,0.4);
  --header-h:    56px;
  --bg1: #0a0508;
  --bg2: #130a10;
  --accent:  #c084fc;
  --accent2: #e879f9;
}

/* ==============================
   TOPIC-BASED THEMES
============================== */
body[data-topic="Business Bay"]    { --bg1:#04080f; --bg2:#091428; --accent:#3b82f6; --accent2:#93c5fd; }
body[data-topic="Labor Lagoon"]    { --bg1:#031209; --bg2:#082818; --accent:#10b981; --accent2:#6ee7b7; }
body[data-topic="Eco Estuary"]     { --bg1:#041508; --bg2:#0a2e10; --accent:#22c55e; --accent2:#86efac; }
body[data-topic="Society Shoals"]  { --bg1:#120508; --bg2:#2a0a12; --accent:#f43f5e; --accent2:#fda4af; }
body[data-topic="Market Maze"]     { --bg1:#0d0802; --bg2:#221a04; --accent:#f59e0b; --accent2:#fcd34d; }
body[data-topic="Cognition Cove"]  { --bg1:#060f1e; --bg2:#0c1f38; --accent:#2196F3; --accent2:#64B5F6; }
body[data-topic="AI Abyss"]        { --bg1:#010d14; --bg2:#032030; --accent:#00E5FF; --accent2:#80DEEA; }

/* ===== ANIMATED BACKGROUND ===== */
#space-bg {
  position: fixed; inset: 0; z-index: 0;
  overflow: hidden;
}
.space-gradient {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, var(--bg1) 0%, var(--bg2) 60%, #000 100%);
  transition: background 1.5s ease;
}
.grid-layer {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(192,132,252,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(192,132,252,0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  animation: gridShift 22s linear infinite;
}
@keyframes gridShift {
  0%   { background-position: 0 0; }
  100% { background-position: 44px 44px; }
}
.nodes-layer { position: absolute; inset: 0; pointer-events: none; }
.data-node {
  position: absolute;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
  animation: nodeFloat linear infinite;
  filter: blur(1px);
  box-shadow: 0 0 8px var(--accent);
}
@keyframes nodeFloat {
  0%   { opacity: 0; transform: translateY(0) scale(0.5); }
  20%  { opacity: 0.7; }
  80%  { opacity: 0.5; }
  100% { opacity: 0; transform: translateY(-100vh) scale(1.5); }
}
.circuit-layer { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.circuit-line {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  animation: circuitScan linear infinite;
}
@keyframes circuitScan {
  0%   { opacity: 0; transform: translateX(-100%); }
  20%  { opacity: 0.5; }
  80%  { opacity: 0.3; }
  100% { opacity: 0; transform: translateX(100vw); }
}
.scanlines {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent 0px, transparent 3px,
    rgba(0,0,0,0.06) 3px, rgba(0,0,0,0.06) 4px
  );
  pointer-events: none; opacity: 0.4;
}
.bubbles { position: absolute; inset: 0; pointer-events: none; }
.bubble {
  position: absolute; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(192,132,252,0.2), rgba(192,132,252,0.02));
  border: 1px solid rgba(192,132,252,0.12);
  animation: bubbleRise linear infinite;
}
@keyframes bubbleRise {
  0%   { transform: translateY(0) scale(1); opacity: 0.5; }
  80%  { opacity: 0.3; }
  100% { transform: translateY(-105vh) scale(1.2); opacity: 0; }
}
.particles { position: absolute; inset: 0; pointer-events: none; }
.particle {
  position: absolute; width: 2px; height: 2px;
  border-radius: 50%;
  background: var(--accent);
  animation: particleDrift linear infinite;
  top: 100%;
  box-shadow: 0 0 4px var(--accent);
}
@keyframes particleDrift {
  0%   { transform: translateY(0) translateX(0); opacity: 0.6; }
  50%  { transform: translateY(-40vh) translateX(20px); opacity: 0.8; }
  100% { transform: translateY(-100vh) translateX(-15px); opacity: 0; }
}

/* ===== HEADER ===== */
#app-header {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--header-h); z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px;
  background: rgba(10,5,8,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(192,132,252,0.2);
}
.header-left { display: flex; align-items: center; gap: 8px; }
.logo-icon   { font-size: 22px; }
.logo-text   {
  font-family: 'Space Mono', monospace; font-size: 13px; font-weight: 700;
  color: var(--accent); letter-spacing: 2px;
  text-shadow: 0 0 12px var(--accent);
}
.header-stats {
  display: flex; align-items: center; gap: 6px;
  font-size: 11px; color: var(--text-soft);
  font-family: 'Space Mono', monospace;
}
.stat-sep { opacity: 0.3; }

/* ===== SCREENS ===== */
.screen {
  position: relative; z-index: 10;
  min-height: 100vh;
  padding-top: calc(var(--header-h) + 12px);
  padding-bottom: 80px;
  display: none;
}
.screen.active { display: block; }

/* ===== SCREEN HEADER ===== */
.screen-header {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 16px;
}
.screen-header h2 { font-size: 18px; font-weight: 700; flex: 1; }
.back-btn {
  background: var(--glass); border: 1px solid var(--glass-border);
  color: var(--text-soft); padding: 6px 12px; border-radius: 20px;
  font-size: 13px; cursor: pointer; white-space: nowrap;
  transition: all 0.2s;
}
.back-btn:hover { background: rgba(255,255,255,0.1); border-color: var(--accent); }

/* ===== HOME SCREEN ===== */
.home-hero {
  display: flex; flex-direction: column; align-items: center;
  padding: 20px 16px 10px;
  text-align: center; position: relative;
}
.robot-teacher  { position: relative; margin-bottom: 12px; }
.robot-body     { font-size: 64px; animation: robotBob 3s ease-in-out infinite; filter: drop-shadow(0 0 20px var(--accent)); }
@keyframes robotBob {
  0%,100% { transform: translateY(0) rotate(-1deg); }
  50%      { transform: translateY(-8px) rotate(1deg); }
}
.robot-bubble {
  position: absolute; left: 50%; transform: translateX(-50%);
  top: -52px; white-space: normal; min-width: 200px; max-width: 280px;
  background: rgba(192,132,252,0.1); border: 1px solid rgba(192,132,252,0.3);
  border-radius: 12px; padding: 8px 12px; font-size: 12px;
  text-align: center; backdrop-filter: blur(8px);
  animation: bubblePop 0.3s ease;
  color: var(--accent2);
}
@keyframes bubblePop { from { opacity:0; transform: translateX(-50%) scale(0.8); } to { opacity:1; transform: translateX(-50%) scale(1); } }

.app-title {
  font-family: 'Space Mono', monospace;
  font-size: 36px; line-height: 1.1; font-weight: 700;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 60%, var(--accent2) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 6px;
  letter-spacing: -1px;
}
.app-sub { font-size: 13px; color: var(--text-soft); margin-bottom: 4px; }

/* ===== DAY STRIP ===== */
.day-progress-strip {
  padding: 12px 0;
  overflow: hidden;
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 16px;
}
.day-scroll {
  display: flex; gap: 8px; padding: 0 16px;
  overflow-x: auto; scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.day-scroll::-webkit-scrollbar { display: none; }
.day-pill {
  flex: 0 0 72px; scroll-snap-align: center;
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: 12px; padding: 8px 6px; text-align: center; cursor: pointer;
  transition: all 0.2s;
}
.day-pill:hover   { background: rgba(192,132,252,0.1); border-color: var(--accent); }
.day-pill.today   { background: rgba(192,132,252,0.2); border-color: var(--accent); box-shadow: 0 0 16px rgba(192,132,252,0.3); }
.day-pill.clear   { border-color: var(--neon-green); background: rgba(6,214,160,0.12); }
.day-pill.partial { border-color: var(--gold); background: rgba(244,208,63,0.1); }
.day-num   { display: block; font-size: 10px; font-family: 'Space Mono', monospace; opacity: 0.7; }
.day-status { font-size: 15px; }

/* ===== HOME ACTIONS ===== */
.home-actions { display: flex; flex-direction: column; gap: 10px; padding: 0 16px 16px; }

.btn-primary {
  display: flex; align-items: center; gap: 12px;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  border: none; border-radius: var(--radius); padding: 16px 20px;
  color: #fff; font-size: 16px; font-weight: 700; cursor: pointer;
  box-shadow: 0 4px 20px rgba(192,132,252,0.35), 0 0 0 1px rgba(192,132,252,0.2);
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn-primary:active { transform: scale(0.97); }
.btn-secondary {
  display: flex; align-items: center; gap: 12px;
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius); padding: 14px 20px;
  color: #fff; font-size: 15px; font-weight: 600; cursor: pointer;
  transition: background 0.2s;
}
.btn-secondary:hover { background: rgba(255,255,255,0.1); }
.btn-ghost {
  display: flex; align-items: center; gap: 12px;
  background: transparent; border: 1px solid rgba(192,132,252,0.2);
  border-radius: var(--radius); padding: 12px 20px;
  color: var(--text-soft); font-size: 14px; cursor: pointer;
  transition: all 0.2s;
}
.btn-ghost:hover { border-color: var(--accent); color: #fff; background: rgba(192,132,252,0.08); }
.btn-icon { font-size: 22px; }
.btn-text { flex: 1; text-align: left; }

/* ===== OVERALL PROGRESS ===== */
.overall-progress {
  margin: 0 16px; padding: 14px 16px;
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  border-left: 3px solid var(--accent);
}
.prog-label { font-size: 10px; color: var(--text-soft); margin-bottom: 6px; font-family: 'Space Mono', monospace; text-transform: uppercase; letter-spacing: 2px; }
.prog-bar-wrap { height: 5px; background: rgba(255,255,255,0.08); border-radius: 3px; margin-bottom: 4px; overflow: hidden; }
.prog-bar { height: 100%; background: linear-gradient(90deg, var(--accent), var(--neon-green)); border-radius: 3px; transition: width 0.5s ease; box-shadow: 0 0 8px var(--accent); }
.prog-pct  { font-size: 11px; font-family: 'Space Mono', monospace; color: var(--accent); text-align: right; }

/* ===== TOPICS SCREEN ===== */
.topic-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 12px; padding: 0 16px;
}
.topic-card {
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg); padding: 16px 12px;
  text-align: center; cursor: pointer; transition: all 0.2s;
  background-color: var(--card-accent, transparent);
  position: relative; overflow: hidden;
}
.topic-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--card-color, var(--accent)); opacity: 0.8;
}
.topic-card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.4), 0 0 0 1px var(--accent); }
.topic-emoji     { font-size: 32px; margin-bottom: 6px; filter: drop-shadow(0 0 8px var(--card-color, var(--accent))); }
.topic-name      { font-size: 10px; font-weight: 700; margin-bottom: 2px; color: var(--accent); font-family: 'Space Mono', monospace; letter-spacing: 0.5px; }
.topic-name-jp   { font-size: 11px; color: var(--text-soft); margin-bottom: 6px; }
.topic-count     { font-size: 11px; color: var(--text-soft); margin-bottom: 6px; }
.topic-mini-bar  { height: 2px; background: rgba(255,255,255,0.08); border-radius: 2px; overflow: hidden; }
.topic-mini-fill { height: 100%; border-radius: 2px; transition: width 0.5s; }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,0.8); backdrop-filter: blur(12px);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal-box {
  background: linear-gradient(160deg, #0a0508, #130a10);
  border: 1px solid rgba(192,132,252,0.2);
  border-radius: var(--radius-lg); padding: 28px 20px;
  width: 100%; max-width: 360px; text-align: center;
  box-shadow: 0 0 40px rgba(192,132,252,0.12);
}
.modal-topic-badge { display: inline-block; background: var(--accent); color: #000; font-size: 11px; font-family: 'Space Mono', monospace; padding: 4px 12px; border-radius: 20px; margin-bottom: 12px; font-weight: 700; }
.modal-topic-creature { font-size: 52px; margin-bottom: 12px; filter: drop-shadow(0 0 16px var(--accent)); }
.modal-title { font-size: 15px; margin-bottom: 20px; color: var(--text-soft); }
.modal-btn {
  display: flex; align-items: center; gap: 14px;
  width: 100%; background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius); padding: 14px 16px; margin-bottom: 10px;
  cursor: pointer; text-align: left; color: #fff; transition: all 0.2s;
}
.modal-btn:hover { background: rgba(255,255,255,0.1); }
.modal-btn.mode-full  { border-color: var(--accent); }
.modal-btn.mode-step  { border-color: var(--gold); }
.modal-btn-icon   { font-size: 26px; }
.modal-btn-content{ flex: 1; }
.modal-btn-title  { font-size: 15px; font-weight: 700; margin-bottom: 2px; }
.modal-btn-sub    { font-size: 12px; color: var(--text-soft); }
.modal-btn-count  { font-size: 12px; font-family: 'Space Mono', monospace; color: var(--accent); white-space: nowrap; }
.modal-cancel { background: transparent; border: none; color: var(--text-soft); font-size: 14px; cursor: pointer; margin-top: 6px; padding: 8px; }
.modal-cancel:hover { color: #fff; }

/* ===== REVIEW SCREEN ===== */
.review-options   { padding: 0 16px; display: flex; flex-direction: column; gap: 10px; }
.review-btn {
  display: flex; align-items: center; gap: 14px;
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius); padding: 14px 16px; cursor: pointer;
  color: #fff; text-align: left; transition: all 0.2s; width: 100%;
}
.review-btn:hover { background: rgba(192,132,252,0.1); border-color: var(--accent); }
.r-icon  { font-size: 22px; }
.r-label { flex: 1; font-size: 15px; font-weight: 600; }
.r-count { font-size: 12px; font-family: 'Space Mono', monospace; color: var(--accent); }
.topic-review-list { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }

/* ===== FLASHCARD ===== */
.flashcard-wrap { padding: 16px; display: flex; justify-content: center; }
.flashcard {
  width: 100%; max-width: 460px;
  aspect-ratio: 5/7;
  perspective: 1000px;
  cursor: pointer; position: relative;
}
.card-front, .card-back {
  position: absolute; inset: 0;
  border-radius: var(--radius-lg);
  backface-visibility: hidden;
  transition: transform 0.55s cubic-bezier(0.4,0,0.2,1);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 24px; gap: 10px;
  box-shadow: var(--shadow);
}
.card-front {
  background: linear-gradient(160deg, rgba(192,132,252,0.08), rgba(255,255,255,0.03));
  border: 1px solid rgba(192,132,252,0.25);
  transform: rotateY(0deg);
}
.card-back {
  background: linear-gradient(160deg, var(--bg2), var(--bg1));
  border: 1px solid var(--accent);
  transform: rotateY(180deg);
  justify-content: flex-start; align-items: flex-start;
  overflow-y: auto; gap: 8px;
  box-shadow: 0 0 30px rgba(192,132,252,0.1);
}
.flashcard.flipped .card-front { transform: rotateY(-180deg); }
.flashcard.flipped .card-back  { transform: rotateY(0deg); }

.card-pos     { font-size: 11px; font-family: 'Space Mono', monospace; color: var(--accent); padding: 3px 10px; background: rgba(192,132,252,0.12); border-radius: 20px; border: 1px solid rgba(192,132,252,0.3); }
.card-word    { font-family: 'Space Mono', monospace; font-size: 32px; font-weight: 700; text-align: center; line-height: 1.2; letter-spacing: -1px; }
.card-hint    { font-size: 12px; color: var(--text-soft); margin-top: 8px; }
.card-meaning { font-size: 20px; font-weight: 700; color: var(--gold); }
.card-example, .card-translation { font-size: 13px; color: var(--text-soft); line-height: 1.6; }
.card-etymology   { font-size: 12px; color: var(--neon-cyan); border-top: 1px solid rgba(192,132,252,0.15); padding-top: 8px; width: 100%; }
.card-derivatives { font-size: 12px; color: rgba(255,255,255,0.55); }

.fc-progress-info { flex: 1; text-align: center; font-size: 13px; color: var(--text-soft); font-family: 'Space Mono', monospace; }
.topic-badge { font-size: 10px; background: var(--accent); color: #000; padding: 3px 10px; border-radius: 20px; font-family: 'Space Mono', monospace; white-space: nowrap; font-weight: 700; }

.fc-actions { display: flex; gap: 10px; padding: 0 16px 10px; }
.fc-nav     { display: flex; gap: 10px; padding: 0 16px 16px; }
.fc-btn {
  flex: 1; padding: 13px; border-radius: var(--radius);
  border: none; font-size: 14px; font-weight: 700; cursor: pointer; transition: all 0.15s;
}
.fc-skip  { background: var(--glass); border: 1px solid var(--glass-border); color: var(--text-soft); }
.fc-knew  { background: linear-gradient(135deg, var(--accent), #7c3aed); color: #fff; box-shadow: 0 4px 16px rgba(192,132,252,0.3); }
.fc-btn-sm, .fc-btn-next {
  flex: 1; padding: 10px; border-radius: var(--radius);
  border: 1px solid var(--glass-border); background: var(--glass);
  color: var(--text-soft); font-size: 14px; cursor: pointer;
}
.fc-btn-next { border-color: var(--accent); color: var(--accent); }

/* ===== QUIZ ===== */
.quiz-timer-wrap { display: flex; align-items: center; gap: 10px; padding: 0 16px 10px; }
.quiz-timer-bar {
  flex: 1; height: 5px; background: rgba(255,255,255,0.08);
  border-radius: 3px; overflow: hidden; position: relative;
}
.quiz-timer-bar::after {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  width: var(--timer-pct, 100%);
  background: linear-gradient(90deg, var(--accent), #ff6b6b);
  border-radius: 3px; transition: width 0.9s linear;
  box-shadow: 0 0 8px var(--accent);
}
.quiz-timer-text { font-size: 14px; font-family: 'Space Mono', monospace; color: var(--accent); min-width: 20px; text-align: center; }
.quiz-meta  { flex: 1; display: flex; align-items: center; gap: 8px; justify-content: center; }
.mode-badge { font-size: 10px; background: var(--accent); color: #000; padding: 3px 10px; border-radius: 20px; font-family: 'Space Mono', monospace; font-weight: 700; }

.quiz-question-wrap { padding: 16px 20px; text-align: center; min-height: 80px; display: flex; flex-direction: column; align-items: center; gap: 8px; }
.quiz-word { font-family: 'Space Mono', monospace; font-size: 30px; font-weight: 700; line-height: 1.2; letter-spacing: -1px; text-shadow: 0 0 20px var(--accent); }
.quiz-listen-btn button { background: var(--glass); border: 1px solid rgba(192,132,252,0.3); color: #fff; padding: 8px 16px; border-radius: 20px; font-size: 13px; cursor: pointer; }

.quiz-choices { padding: 0 16px; display: flex; flex-direction: column; gap: 8px; }
.choice-btn {
  display: flex; align-items: center; gap: 12px;
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius); padding: 14px 16px;
  color: #fff; font-size: 14px; cursor: pointer; text-align: left;
  transition: all 0.15s; width: 100%;
}
.choice-btn:hover:not(.disabled) { background: rgba(192,132,252,0.1); border-color: var(--accent); }
.choice-btn.disabled { cursor: default; }
.choice-btn.correct  { background: rgba(6,214,160,0.15); border-color: #06d6a0; box-shadow: 0 0 12px rgba(6,214,160,0.2); }
.choice-btn.wrong    { background: rgba(255,107,107,0.15); border-color: #ff6b6b; }
.choice-num {
  font-size: 11px; font-family: 'Space Mono', monospace; color: var(--accent);
  background: rgba(192,132,252,0.12); border: 1px solid rgba(192,132,252,0.2);
  border-radius: 50%; width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}

.quiz-feedback {
  margin: 12px 16px 0;
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius); padding: 14px 16px;
  animation: feedbackSlide 0.3s ease;
}
@keyframes feedbackSlide { from { opacity:0; transform: translateY(10px); } to { opacity:1; transform: translateY(0); } }
.feedback-header { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.feedback-icon   { font-size: 24px; }
.feedback-msg    { font-size: 14px; font-weight: 700; flex: 1; }
.feedback-correct{ font-size: 14px; color: var(--gold); font-weight: 700; margin-bottom: 8px; }
.feedback-hint   { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 10px; display: flex; flex-direction: column; gap: 6px; }
.hint-etymology, .hint-derivatives, .hint-example { font-size: 12px; color: var(--text-soft); line-height: 1.5; }

/* ===== RESULTS ===== */
.results-wrap {
  padding: 24px 20px;
  display: flex; flex-direction: column; align-items: center; gap: 16px;
  text-align: center; position: relative; z-index: 10;
}
.results-shark  { font-size: 72px; animation: robotBob 3s ease-in-out infinite; }
.results-title  { font-family: 'Space Mono', monospace; font-size: 24px; font-weight: 700; }
.results-score  { font-family: 'Space Mono', monospace; font-size: 48px; color: var(--accent); text-shadow: 0 0 20px var(--accent); }
.results-comment{ font-size: 14px; color: var(--text-soft); max-width: 280px; line-height: 1.6; }
.results-stats-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 10px; width: 100%; max-width: 320px;
}
.r-stat {
  background: var(--glass); border: 1px solid var(--glass-border);
  border-radius: var(--radius); padding: 14px 10px; text-align: center;
  border-left: 2px solid var(--accent);
}
.r-stat-num   { font-family: 'Space Mono', monospace; font-size: 22px; color: var(--accent); margin-bottom: 4px; }
.r-stat-label { font-size: 11px; color: var(--text-soft); }
.results-actions { display: flex; flex-direction: column; gap: 10px; width: 100%; max-width: 320px; }

/* ===== CELEBRATIONS ===== */
.celebration { position: fixed; inset: 0; pointer-events: none; z-index: 150; }
.spark { position: absolute; animation: sparkFly ease-out forwards; }
@keyframes sparkFly {
  0%   { transform: translate(0,0) scale(1); opacity: 1; }
  100% { transform: translate(var(--dx),var(--dy)) scale(0); opacity: 0; }
}
.fish-confetti { position: absolute; animation: fishFly ease-out forwards; }
@keyframes fishFly {
  0%   { transform: translate(0,0) rotate(0); opacity: 1; }
  100% { transform: translate(var(--dx),var(--dy)) rotate(var(--dr)); opacity: 0; }
}
.correct-burst {
  position: fixed; inset: 0; z-index: 160;
  display: flex; align-items: center; justify-content: center; pointer-events: none;
}
.burst-content { font-size: 80px; animation: burstPop 0.65s ease-out forwards; }
@keyframes burstPop {
  0%   { transform: scale(0) rotate(-20deg); opacity: 1; }
  50%  { transform: scale(1.4) rotate(10deg); opacity: 1; }
  100% { transform: scale(2.0) rotate(5deg); opacity: 0; }
}

/* ===== ROBOT OVERLAY ===== */
.robot-overlay {
  position: fixed; inset: 0; z-index: 300;
  background: rgba(0,0,0,0.8); backdrop-filter: blur(12px);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.robot-msg-box {
  background: linear-gradient(160deg, #0a0508, #130a10);
  border: 1px solid rgba(192,132,252,0.25);
  border-radius: var(--radius-lg); padding: 32px 24px;
  text-align: center; max-width: 320px; width: 100%;
  display: flex; flex-direction: column; align-items: center; gap: 16px;
  box-shadow: 0 0 40px rgba(192,132,252,0.12);
}
.robot-big   { font-size: 56px; filter: drop-shadow(0 0 16px var(--accent)); }
.robot-msg-box p    { font-size: 16px; line-height: 1.6; }
.robot-msg-box button {
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  border: none; border-radius: var(--radius); padding: 12px 28px;
  color: #fff; font-size: 15px; font-weight: 700; cursor: pointer;
}

/* ===== RESPONSIVE ===== */
@media (min-width: 480px) {
  .app-title { font-size: 44px; }
  .flashcard { max-width: 380px; }
  .quiz-word { font-size: 36px; }
  .home-actions { max-width: 420px; margin: 0 auto; }
  .overall-progress { max-width: 420px; margin: 0 auto 0; }
}
@media (min-width: 768px) {
  .topic-grid { grid-template-columns: repeat(4, 1fr); max-width: 800px; margin: 0 auto; }
  .review-options { max-width: 480px; margin: 0 auto; }
}