/* ==========================================================================
   fun.css — Fun Zone Arcade
   Accent: --neon-green (#39FF14). Dark Tron arcade vibe with stars bg.
   ========================================================================== */

:root {
  --neon-green: #39FF14;
}

/* ── Stars canvas ─────────────────────────────────────────────────────────── */
#stars-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ── Page content above canvas ────────────────────────────────────────────── */
.page-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

/* ── Hero ─────────────────────────────────────────────────────────────────── */
.fun-hero {
  text-align: center;
  padding: 60px 20px 40px;
}

.fun-hero-badge {
  display: inline-block;
  font-family: 'Syne', sans-serif;
  font-weight: 900;
  font-size: 0.7rem;
  letter-spacing: 4px;
  color: var(--neon-green);
  background: rgba(57, 255, 20, 0.1);
  border: 1px solid rgba(57, 255, 20, 0.4);
  border-radius: 999px;
  padding: 4px 16px;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.fun-hero-title {
  font-family: 'Syne', sans-serif;
  font-weight: 900;
  font-size: 3.2rem;
  line-height: 1.1;
  color: var(--text-primary);
  text-shadow: 0 0 40px rgba(57, 255, 20, 0.15);
  margin-bottom: 16px;
}

.fun-hero-accent {
  color: var(--neon-green);
  text-shadow: 0 0 30px rgba(57, 255, 20, 0.6), 0 0 60px rgba(57, 255, 20, 0.3);
  display: block;
}

.fun-hero-sub {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--neon-amber);
  text-shadow: 0 0 20px rgba(255, 184, 0, 0.5);
}

/* ── Prize Meter ──────────────────────────────────────────────────────────── */
.prize-section {
  background: var(--bg-surface);
  border: 1px solid rgba(57, 255, 20, 0.2);
  border-left: 4px solid var(--neon-green);
  border-radius: 16px;
  padding: 20px 24px;
  margin-bottom: 40px;
}

.prize-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.prize-icon { font-size: 1.4rem; }

.prize-label {
  flex: 1;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.prize-name {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--neon-amber);
  text-shadow: 0 0 12px rgba(255, 184, 0, 0.5);
}

.prize-track {
  position: relative;
  height: 28px;
  background: var(--bg-elevated);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 10px;
}

.prize-fill {
  position: absolute;
  top: 0; left: 0;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #39FF14, #00FF88, #FFB800);
  border-radius: 999px;
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.6), 0 0 40px rgba(57, 255, 20, 0.2);
  overflow: hidden;
}

.prize-fill::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.35), transparent);
  animation: shimmer-sweep 2s ease-in-out infinite;
}

@keyframes shimmer-sweep {
  0%   { left: -60%; }
  100% { left: 160%; }
}

.prize-particles {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  overflow: visible;
}

@keyframes particle-float {
  0%   { transform: translateY(0) scale(1); opacity: 1; }
  100% { transform: translateY(-60px) scale(0); opacity: 0; }
}

.prize-particle {
  position: absolute;
  font-size: 0.8rem;
  font-family: 'Geist Mono', monospace;
  font-weight: 700;
  color: var(--neon-green);
  animation: particle-float 1s ease-out forwards;
  pointer-events: none;
  white-space: nowrap;
}

.prize-stats {
  display: flex;
  justify-content: space-between;
  font-family: 'Geist Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ── Section heading ──────────────────────────────────────────────────────── */
.section-heading {
  font-family: 'Syne', sans-serif;
  font-weight: 900;
  font-size: 1.8rem;
  color: var(--neon-green);
  text-shadow: 0 0 20px rgba(57, 255, 20, 0.4);
  margin-bottom: 16px;
}

/* ── Game Section ─────────────────────────────────────────────────────────── */
.game-section {
  margin-bottom: 32px;
}

/* Mode toggle */
.mode-toggle {
  display: flex;
  gap: 4px;
  background: var(--bg-elevated);
  padding: 4px;
  border-radius: 999px;
  margin-bottom: 20px;
  width: fit-content;
}

.mode-btn {
  flex: 1;
  white-space: nowrap;
  padding: 10px 24px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
  touch-action: manipulation;
}

.mode-btn.active {
  background: var(--neon-green);
  color: #07071A;
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.5);
}

/* Game card */
.game-card {
  background: var(--bg-surface);
  border: 1px solid rgba(57, 255, 20, 0.3);
  border-radius: 20px;
  box-shadow: 0 0 30px rgba(57, 255, 20, 0.08);
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
  position: relative;
}

.game-card--failed {
  border-color: var(--neon-pink) !important;
  box-shadow: 0 0 40px rgba(255, 45, 120, 0.4) !important;
}

.game-state {
  min-height: 380px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 28px 24px;
}

/* Idle info */
.idle-info {
  text-align: center;
  max-width: 300px;
}

.idle-mode-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--neon-green);
  margin-bottom: 6px;
}

.idle-mode-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  white-space: pre-line;
}

/* Arcade start button */
.btn-arcade {
  font-family: 'Syne', sans-serif;
  font-weight: 900;
  font-size: 1.1rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  padding: 16px 52px;
  background: var(--neon-green);
  color: #07071A;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.4);
  transition: box-shadow 0.15s, transform 0.15s;
  touch-action: manipulation;
}

.btn-arcade:hover {
  box-shadow: 0 0 40px rgba(57, 255, 20, 0.7);
  transform: translateY(-2px);
}

.btn-arcade:active {
  transform: scale(0.97);
}

/* Timer */
.timer-wrap {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.timer-track {
  width: 100%;
  height: 8px;
  background: var(--bg-elevated);
  border-radius: 999px;
  overflow: hidden;
}

.timer-bar {
  height: 100%;
  width: 100%;
  background: var(--neon-green);
  border-radius: 999px;
  box-shadow: 0 0 10px rgba(57, 255, 20, 0.6);
  transition: width 0.1s linear;
}

.timer-bar.danger {
  background: var(--neon-pink);
  box-shadow: 0 0 10px rgba(255, 45, 120, 0.6);
}

.timer-text {
  font-family: 'Geist Mono', monospace;
  font-size: 2.4rem;
  font-weight: 500;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

/* Streak */
.streak-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.streak-label {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 3px;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.streak-count {
  font-family: 'Geist Mono', monospace;
  font-size: 3.5rem;
  font-weight: 500;
  color: var(--neon-amber);
  text-shadow: 0 0 30px rgba(255, 184, 0, 0.8);
  line-height: 1;
}

@keyframes streak-pulse {
  0%, 100% { transform: scale(1); }
  50%       { transform: scale(1.2); }
}

.streak-bump {
  animation: streak-pulse 0.25s ease-out;
}

.streak-fire {
  font-size: 1.5rem;
}

/* Question progress */
.q-progress {
  font-family: 'Geist Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

/* Question display */
.question-display {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 8px 0;
}

.q-num {
  font-family: 'Geist Mono', monospace;
  font-size: 2.8rem;
  font-weight: 500;
  color: var(--neon-green);
  text-shadow: 0 0 20px rgba(57, 255, 20, 0.6);
  min-width: 48px;
  text-align: center;
  line-height: 1;
}

.q-op, .q-eq {
  font-family: 'Geist Mono', monospace;
  font-size: 1.8rem;
  color: var(--text-secondary);
  line-height: 1;
}

.q-answer-box {
  font-family: 'Geist Mono', monospace;
  font-size: 2.8rem;
  font-weight: 500;
  min-width: 90px;
  text-align: center;
  color: var(--neon-amber);
  border-bottom: 3px solid var(--neon-green);
  padding-bottom: 4px;
  transition: color 0.1s;
  line-height: 1;
}

/* Numpad */
.numpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  width: 100%;
  max-width: 280px;
}

.num-btn {
  min-height: 72px;
  font-family: 'Geist Mono', monospace;
  font-size: 1.5rem;
  font-weight: 500;
  background: var(--bg-elevated);
  border: 1px solid rgba(57, 255, 20, 0.2);
  color: var(--text-primary);
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.08s, border-color 0.08s, transform 0.08s;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}

.num-btn:active,
.num-btn.pressed {
  background: rgba(57, 255, 20, 0.2);
  border-color: var(--neon-green);
  transform: scale(0.92);
}

.num-submit {
  background: var(--neon-green);
  color: #07071A;
  font-weight: 700;
  border: none;
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.4);
}

.num-submit:active,
.num-submit.pressed {
  background: #2bcc10;
}

.num-back {
  color: var(--neon-pink);
}

/* Failed state */
.fail-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.fail-icon { font-size: 3.5rem; }

@keyframes flash-red {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.25; }
}

.fail-title {
  font-family: 'Syne', sans-serif;
  font-weight: 900;
  font-size: 2.2rem;
  color: var(--neon-pink);
  text-shadow: 0 0 20px rgba(255, 45, 120, 0.6);
  animation: flash-red 0.5s ease-in-out infinite;
}

.fail-sub {
  color: var(--text-secondary);
  font-size: 1rem;
}

.fail-countdown {
  font-family: 'Geist Mono', monospace;
  font-size: 0.85rem;
  letter-spacing: 2px;
  color: var(--text-faint);
  margin-top: 4px;
}

/* Success state */
.success-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.success-icon { font-size: 3rem; }

.success-title {
  font-family: 'Syne', sans-serif;
  font-weight: 900;
  font-size: 2.2rem;
  color: var(--neon-green);
  text-shadow: 0 0 20px rgba(57, 255, 20, 0.6);
}

.success-time {
  font-family: 'Geist Mono', monospace;
  font-size: 3rem;
  font-weight: 500;
  color: var(--neon-amber);
  text-shadow: 0 0 20px rgba(255, 184, 0, 0.5);
  line-height: 1;
}

@keyframes record-glow {
  0%, 100% { text-shadow: 0 0 10px rgba(255, 184, 0, 0.5); }
  50%       { text-shadow: 0 0 30px rgba(255, 184, 0, 1), 0 0 60px rgba(255, 184, 0, 0.4); }
}

.success-record {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--neon-amber);
  animation: record-glow 1s ease-in-out infinite;
}

.success-pts {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Leaderboard */
.leaderboard {
  width: 100%;
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

.leaderboard-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.lb-empty {
  color: var(--text-faint);
  font-size: 0.85rem;
  text-align: center;
  padding: 12px 0;
  font-style: italic;
}

.leaderboard-row {
  display: flex;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-subtle);
  gap: 4px;
}

.leaderboard-row:last-child { border-bottom: none; }

.leaderboard-row:first-of-type .lb-rank { font-size: 1rem; }
.leaderboard-row:first-of-type .lb-time { font-size: 1rem; }

.lb-rank {
  font-family: 'Geist Mono', monospace;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--neon-green);
  width: 28px;
  flex-shrink: 0;
}

.lb-device {
  flex: 1;
  font-size: 0.9rem;
  padding: 0 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lb-time {
  font-family: 'Geist Mono', monospace;
  font-size: 0.9rem;
  color: var(--neon-amber);
  flex-shrink: 0;
}

.lb-date {
  font-size: 0.75rem;
  color: var(--text-faint);
  flex-shrink: 0;
  padding-left: 8px;
}

/* ── Coming Soon ──────────────────────────────────────────────────────────── */
.coming-soon-section {
  text-align: center;
  padding: 24px 0 40px;
}

.coming-soon-card {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  border: 1px dashed rgba(57, 255, 20, 0.3);
  border-radius: 12px;
  color: var(--text-faint);
  font-style: italic;
  font-size: 0.95rem;
}

.coming-soon-dots {
  letter-spacing: 4px;
  color: var(--neon-green);
  opacity: 0.5;
}

/* ── Just Work Section ────────────────────────────────────────────────────── */
.just-work-section {
  padding-bottom: 60px;
}

.just-work-header {
  margin-bottom: 20px;
}

.just-work-sub {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.work-card {
  background: var(--bg-surface);
  border: 1px solid rgba(57, 255, 20, 0.25);
  border-radius: 20px;
  padding: 28px;
  min-height: 220px;
}

.work-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 8px;
}

.work-topic-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--neon-green);
  background: rgba(57, 255, 20, 0.12);
  border: 1px solid rgba(57, 255, 20, 0.25);
  border-radius: 999px;
  padding: 3px 12px;
}

.work-session-score {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.work-question {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.work-input-row {
  display: flex;
  gap: 12px;
  align-items: stretch;
}

.work-input {
  flex: 1;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: 'Geist Mono', monospace;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  min-width: 0;
}

.work-input:focus {
  border-color: var(--neon-green);
  box-shadow: 0 0 0 2px rgba(57, 255, 20, 0.2);
}

.btn-work-check {
  padding: 12px 20px;
  background: var(--neon-green);
  color: #07071A;
  border: none;
  border-radius: 10px;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  white-space: nowrap;
  touch-action: manipulation;
  transition: opacity 0.15s;
  flex-shrink: 0;
}

.btn-work-check:hover { opacity: 0.9; }
.btn-work-check:active { opacity: 0.75; }

.work-hint {
  font-size: 0.8rem;
  color: var(--text-faint);
  margin-top: 8px;
  min-height: 1em;
}

/* Result banner */
.work-result-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  border-radius: 12px;
  margin-bottom: 16px;
  border: 1px solid transparent;
}

.work-result-banner.correct {
  background: rgba(57, 255, 20, 0.1);
  border-color: rgba(57, 255, 20, 0.4);
}

.work-result-banner.wrong {
  background: rgba(255, 45, 120, 0.1);
  border-color: rgba(255, 45, 120, 0.4);
}

.work-result-icon { font-size: 1.8rem; }

.work-result-msg {
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.4;
}

.work-explanation {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.65;
  background: var(--bg-elevated);
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
}

.work-result-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn-work-action {
  padding: 10px 18px;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  touch-action: manipulation;
  transition: border-color 0.15s, background 0.15s;
}

.btn-work-action:hover {
  border-color: rgba(57, 255, 20, 0.4);
}

.btn-work-action.primary {
  background: var(--neon-green);
  color: #07071A;
  border: none;
}

.btn-work-action.primary:hover {
  opacity: 0.9;
}

/* ── Device Modal ─────────────────────────────────────────────────────────── */
.device-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.device-modal-card {
  background: var(--bg-surface);
  border: 1px solid rgba(57, 255, 20, 0.4);
  border-radius: 20px;
  padding: 32px 28px;
  max-width: 360px;
  width: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: 0 0 60px rgba(57, 255, 20, 0.15);
}

.device-modal-icon { font-size: 2.5rem; }

.device-modal-title {
  font-family: 'Syne', sans-serif;
  font-weight: 900;
  font-size: 1.3rem;
  color: var(--text-primary);
}

.device-modal-sub {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.device-name-input {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: 'Geist Mono', monospace;
  font-size: 1.05rem;
  text-align: center;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}

.device-name-input:focus {
  border-color: var(--neon-green);
  box-shadow: 0 0 0 2px rgba(57, 255, 20, 0.2);
}

/* ── New-record screen flash ──────────────────────────────────────────────── */
@keyframes record-flash {
  0%   { background: rgba(57, 255, 20, 0); }
  20%  { background: rgba(57, 255, 20, 0.12); }
  100% { background: rgba(57, 255, 20, 0); }
}

.record-flash {
  animation: record-flash 1s ease-out;
}

/* ── Mobile responsive ────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .fun-hero-title  { font-size: 2rem; }
  .fun-hero-badge  { font-size: 0.65rem; }
  .q-num           { font-size: 2.2rem; }
  .q-answer-box    { font-size: 2.2rem; }
  .num-btn         { min-height: 68px; font-size: 1.3rem; }
  .timer-text      { font-size: 1.9rem; }
  .streak-count    { font-size: 2.8rem; }
  .game-state      { padding: 20px 16px; }
  .work-input-row  { flex-direction: column; }
  .btn-work-check  { width: 100%; }
  .mode-toggle     { width: 100%; }
  .mode-btn        { padding: 10px 12px; font-size: 0.82rem; }
}