/* ============================================================
   ESCAPE THE VIVA - NEW FEATURES STYLESHEET
   Screen crack, rage mode, chalk throw, combo popup, boss
   cinematic, XP/level bar, dynamic background, share card
   ============================================================ */

/* ========== SAFETY NET ==========
   These overlays must only ever be visible during actual gameplay.
   Belt-and-braces alongside the JS reset calls. */
#game-container:not(:has(#game-screen.active)) .screen-crack-overlay,
#game-container:not(:has(#game-screen.active)) .rage-overlay,
#game-container:not(:has(#game-screen.active)) .lightning-bolts {
  display: none !important;
  opacity: 0 !important;
}

/* ========== DYNAMIC STRESS BACKGROUND ========== */
.stress-bg-overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  transition: background 1.2s ease;
  background: radial-gradient(ellipse at center, rgba(45,18,0,0.55), rgba(20,8,0,0.15));
}

/* ========== SCREEN CRACK EFFECT (stress >= 90%) ========== */
.screen-crack-overlay {
  position: absolute;
  inset: 0;
  z-index: 550;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.6s ease;
}
.screen-crack-overlay.crack-show { opacity: 1; }
.screen-crack-overlay svg { width: 100%; height: 100%; }
.crack-line {
  stroke: rgba(255,255,255,0.85);
  stroke-width: 1.4;
  fill: none;
  filter: drop-shadow(0 0 2px rgba(0,0,0,0.9));
  opacity: 0;
  transition: opacity 0.4s ease;
}
.screen-crack-overlay.crack-stage-1 .crack-line.stage-1,
.screen-crack-overlay.crack-stage-2 .crack-line.stage-1,
.screen-crack-overlay.crack-stage-2 .crack-line.stage-2,
.screen-crack-overlay.crack-stage-3 .crack-line.stage-1,
.screen-crack-overlay.crack-stage-3 .crack-line.stage-2,
.screen-crack-overlay.crack-stage-3 .crack-line.stage-3 { opacity: 1; }
.screen-crack-overlay.crack-critical { animation: crackShudder 0.25s infinite; }
@keyframes crackShudder {
  0%,100% { transform: translate(0,0); }
  25% { transform: translate(-1px,1px); }
  75% { transform: translate(1px,-1px); }
}

/* ========== PROFESSOR RAGE MODE (anger >= 80%) ========== */
.rage-overlay {
  position: absolute;
  inset: 0;
  z-index: 480;
  pointer-events: none;
  background: radial-gradient(ellipse at center, rgba(200,0,0,0.0) 40%, rgba(180,0,0,0.35) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
}
.rage-overlay.rage-on {
  opacity: 1;
  animation: ragePulse 0.9s ease-in-out infinite;
}
@keyframes ragePulse {
  0%,100% { background: radial-gradient(ellipse at center, rgba(200,0,0,0.0) 40%, rgba(180,0,0,0.28) 100%); }
  50% { background: radial-gradient(ellipse at center, rgba(200,0,0,0.05) 30%, rgba(255,0,0,0.5) 100%); }
}

.prof-svg-wrapper.rage-shake { animation: profRageShake 0.1s ease-in-out infinite !important; }
@keyframes profRageShake {
  0%,100% { transform: rotate(0) scale(1) translate(0,0); }
  20% { transform: rotate(-6deg) scale(1.04) translate(-3px,-2px); }
  40% { transform: rotate(5deg) scale(1.04) translate(3px,1px); }
  60% { transform: rotate(-5deg) scale(1.05) translate(-2px,-3px); }
  80% { transform: rotate(6deg) scale(1.04) translate(2px,2px); }
}

.lightning-bolts {
  position: absolute;
  inset: -20px;
  pointer-events: none;
  display: none;
  z-index: 5;
}
.lightning-bolts.show { display: block; }
.bolt {
  position: absolute;
  font-size: clamp(20px,4vw,32px);
  filter: drop-shadow(0 0 6px #fffb00) drop-shadow(0 0 12px #ff9900);
  animation: boltFlicker 0.35s steps(2) infinite;
}
.bolt-1 { top: -14px; left: -18px; animation-delay: 0s; }
.bolt-2 { top: -10px; right: -20px; animation-delay: 0.12s; transform: scaleX(-1); }
.bolt-3 { bottom: 10px; left: -24px; animation-delay: 0.2s; }
@keyframes boltFlicker {
  0%,100% { opacity: 1; }
  50% { opacity: 0.15; }
}

/* ========== CHALK THROW ANIMATION ========== */
.chalk-piece {
  position: absolute;
  width: 22px;
  height: 8px;
  background: linear-gradient(180deg,#fffef2,#e8e3c8);
  border-radius: 3px;
  box-shadow: 0 0 4px rgba(255,255,255,0.6);
  z-index: 300;
  pointer-events: none;
  animation: chalkFly 0.55s cubic-bezier(0.3,0,0.7,1) forwards;
}
@keyframes chalkFly {
  0% { transform: translate(0,0) rotate(0deg); opacity: 1; }
  85% { transform: translate(var(--chalk-tx), var(--chalk-ty)) rotate(500deg); opacity: 1; }
  100% { transform: translate(var(--chalk-tx), var(--chalk-ty)) rotate(520deg); opacity: 0; }
}
.chalk-shard {
  position: absolute;
  width: 5px;
  height: 5px;
  background: #f5f2e0;
  border-radius: 1px;
  z-index: 300;
  pointer-events: none;
  animation: chalkShard 0.5s ease-out forwards;
}
@keyframes chalkShard {
  to {
    transform: translate(var(--sx), var(--sy)) rotate(360deg);
    opacity: 0;
  }
}
.chalk-dust {
  position: absolute;
  z-index: 299;
  pointer-events: none;
  width: 50px; height: 50px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.55) 0%, rgba(255,255,255,0) 70%);
  animation: chalkDustFade 0.5s ease-out forwards;
}
@keyframes chalkDustFade {
  from { opacity: 0.9; transform: scale(0.4); }
  to { opacity: 0; transform: scale(1.6); }
}

/* ========== COMBO MULTIPLIER POPUP ========== */
.combo-popup {
  position: absolute;
  left: 50%;
  top: 42%;
  font-size: clamp(22px,5vw,40px);
  font-weight: 900;
  font-style: italic;
  color: #ffd700;
  text-shadow: 0 0 10px rgba(255,180,0,0.9), 2px 2px 0 rgba(0,0,0,0.6);
  z-index: 350;
  pointer-events: none;
  letter-spacing: 1px;
  white-space: nowrap;
  transform: translate(-50%,0) scale(0.4);
  opacity: 0;
}
.combo-popup.fly {
  animation: comboFly 1s cubic-bezier(0.2,0.8,0.3,1) forwards;
}
@keyframes comboFly {
  0% { transform: translate(-50%,20px) scale(0.3) rotate(-8deg); opacity: 0; }
  15% { transform: translate(-50%,0) scale(1.25) rotate(4deg); opacity: 1; }
  30% { transform: translate(-50%,-10px) scale(1) rotate(-2deg); opacity: 1; }
  80% { transform: translate(-50%,-90px) scale(1) rotate(0deg); opacity: 1; }
  100% { transform: translate(-50%,-130px) scale(0.9) rotate(0deg); opacity: 0; }
}

/* ========== BOSS QUESTION CINEMATIC ========== */
.boss-cinematic {
  position: absolute;
  inset: 0;
  z-index: 700;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.92);
  flex-direction: column;
  gap: 14px;
  text-align: center;
}
.boss-cinematic.show { display: flex; }
.boss-cinematic-text {
  font-size: clamp(24px,6vw,46px);
  font-weight: 900;
  letter-spacing: 3px;
  color: #ff2d2d;
  text-shadow: 0 0 20px rgba(255,0,0,0.8), 0 0 60px rgba(255,0,0,0.5);
  animation: bossTextPulse 0.7s ease-in-out infinite alternate, bossTextIn 0.5s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes bossTextIn {
  from { transform: scale(2.5); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}
@keyframes bossTextPulse {
  from { text-shadow: 0 0 20px rgba(255,0,0,0.8), 0 0 60px rgba(255,0,0,0.5); }
  to { text-shadow: 0 0 34px rgba(255,60,0,1), 0 0 90px rgba(255,0,0,0.8); }
}
.boss-cinematic-sub {
  color: #f0b429;
  font-size: clamp(11px,2.5vw,15px);
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: bossSubFade 1.4s ease-in-out infinite;
}
@keyframes bossSubFade { 0%,100% { opacity: 0.4; } 50% { opacity: 1; } }

/* ========== FIX: keep new start-screen elements clear of the
   fixed credits bar at the bottom of the container ========== */
.start-content { padding-bottom: clamp(38px, 7vw, 50px) !important; }
.level-display { margin-top: 10px; }
.personal-best-display { margin-bottom: 4px; }

/* ========== XP / LEVEL SYSTEM (start screen) ========== */
.level-display {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  width: 100%;
}
.level-badge {
  background: linear-gradient(135deg, #b87200, #f0b429);
  color: #1a0f00;
  font-weight: 900;
  font-size: clamp(9px,1.8vw,11px);
  padding: 4px 10px;
  border-radius: 20px;
  white-space: nowrap;
  letter-spacing: 0.5px;
}
.xp-bar-track {
  flex: 1;
  height: 8px;
  background: rgba(255,255,255,0.08);
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
}
.xp-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #2980b9, #6dd5fa);
  border-radius: 6px;
  transition: width 0.8s cubic-bezier(0.4,0,0.2,1);
}
.xp-text {
  font-size: clamp(8px,1.5vw,10px);
  color: rgba(255,255,255,0.55);
  white-space: nowrap;
}

.personal-best-display {
  font-size: clamp(9px,1.8vw,11px);
  color: rgba(255,255,255,0.5);
  margin-top: 4px;
  font-weight: 600;
}
.personal-best-display b { color: #f0b429; }

/* Level up popup on end screen */
.levelup-popup {
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%) scale(0.5);
  z-index: 900;
  background: linear-gradient(145deg, #1a0f00, #2d1600);
  border: 2.5px solid #f0b429;
  border-radius: 16px;
  padding: 22px 30px;
  text-align: center;
  box-shadow: 0 0 60px rgba(240,180,41,0.6);
  opacity: 0;
  pointer-events: none;
}
.levelup-popup.show {
  animation: levelUpIn 0.6s cubic-bezier(0.34,1.56,0.64,1) forwards;
}
@keyframes levelUpIn {
  0% { transform: translate(-50%,-50%) scale(0.3); opacity: 0; }
  60% { transform: translate(-50%,-50%) scale(1.1); opacity: 1; }
  100% { transform: translate(-50%,-50%) scale(1); opacity: 1; }
}
.levelup-title {
  color: #ffd700;
  font-size: clamp(14px,3vw,18px);
  font-weight: 900;
  letter-spacing: 1px;
  margin-bottom: 6px;
}
.levelup-name {
  color: #fff;
  font-size: clamp(18px,4vw,26px);
  font-weight: 900;
}

/* ========== SHARE CARD (hidden canvas host) ========== */
#share-canvas { display: none; }
.share-preview-overlay {
  position: fixed;
  inset: 0;
  z-index: 950;
  background: rgba(0,0,0,0.85);
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 14px;
  padding: 20px;
}
.share-preview-overlay.show { display: flex; }
.share-preview-overlay img {
  max-width: min(320px,85vw);
  border-radius: 14px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.6);
}
.share-preview-btns { display: flex; gap: 10px; }
.share-preview-btns button {
  padding: 10px 18px;
  border-radius: 10px;
  border: none;
  font-weight: 800;
  cursor: pointer;
  font-size: 12px;
  letter-spacing: 0.5px;
}
.share-download-btn { background: linear-gradient(135deg,#b87200,#f0b429); color: #000; }
.share-close-btn { background: rgba(255,255,255,0.1); color: #fff; border: 1px solid rgba(255,255,255,0.2) !important; }

/* ========== Screen shake (wrong answer, subtle) reuse existing .screen-shake ========== */

/* ========== Answer glow on hover ========== */
.option-btn.opt-glow { box-shadow: 0 0 0 2px #f0b429, 0 0 18px rgba(240,180,41,0.5) !important; }