:root {
  --bg-top: #ff8c42;
  --bg-mid: #ff6b3d;
  --bg-bottom: #c0392b;
  --ink: #fafcff;
  --ink-soft: #dce9f7;
  --panel: rgba(140, 50, 20, 0.5);
  --line: rgba(255, 200, 150, 0.5);
  --good: #2ddf8b;
  --warn: #ffa940;
  --bad: #ff5555;
  --accent: #ffde47;
  --accent-2: #5fffb8;
  --accent-3: #ff5582;
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 30px 60px rgba(0, 0, 0, 0.4);
  --radius-lg: 28px;
  --radius-md: 16px;
  --font-main: "Trebuchet MS", "Segoe UI", Tahoma, sans-serif;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 rgba(255, 222, 71, 0.5); }
  50% { box-shadow: 0 0 30px rgba(255, 222, 71, 0.7); }
}

@keyframes slide-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes pop {
  0% { transform: scale(0.8); opacity: 0; }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  min-height: 100vh;
  font-family: var(--font-main);
  background:
    radial-gradient(1200px 600px at 8% 5%, rgba(255, 255, 255, 0.35), transparent 55%),
    radial-gradient(1000px 700px at 98% 12%, rgba(255, 175, 61, 0.25), transparent 60%),
    radial-gradient(800px 500px at 50% 100%, rgba(255, 140, 66, 0.18), transparent 70%),
    linear-gradient(180deg, var(--bg-top), var(--bg-mid) 45%, var(--bg-bottom));
  overflow-x: hidden;
  position: relative;
}

.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(2px);
  pointer-events: none;
}

.orb-a {
  width: 220px;
  height: 220px;
  left: -75px;
  top: 120px;
  background: radial-gradient(circle at 30% 30%, #fff9be, rgba(255, 209, 89, 0.24), transparent 70%);
}

.orb-b {
  width: 300px;
  height: 300px;
  right: -80px;
  bottom: 90px;
  background: radial-gradient(circle at 40% 40%, #9af3ff, rgba(83, 188, 255, 0.2), transparent 72%);
}

.wrap {
  width: min(1180px, 94vw);
  margin: 0 auto;
  padding: 12px 0 28px;
}

.topbar {
  position: sticky;
  top: 8px;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: calc(8px + env(safe-area-inset-top)) 10px 8px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(7px);
}

.pill,
.title-pill {
  border-radius: 999px;
  min-height: 42px;
  padding: 10px 16px;
  font-weight: 900;
  border: 1px solid var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
}

.pill {
  text-decoration: none;
  cursor: pointer;
}

.hero {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  animation: slide-up 0.7s ease-out;
  padding: 20px 0;
}

.hero-art {
  display: none;
}

.hero-title {
  max-width: 100%;
  width: 100%;
  max-width: 600px;
  height: auto;
  margin: 0 auto 12px;
  display: block;
  filter: drop-shadow(0 8px 24px rgba(255, 107, 61, 0.35));
}

.hero-text p {
  margin: 10px 0 0;
  max-width: 68ch;
  font-weight: 700;
  font-size: 1.02rem;
  color: #c8e0f7;
  line-height: 1.5;
}

.tag-row {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.tag {
  border-radius: 999px;
  padding: 8px 14px;
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.08));
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--ink-soft);
  backdrop-filter: blur(6px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.layout {
  margin-top: 14px;
  display: grid;
  grid-template-columns: minmax(320px, 1.45fr) minmax(250px, 1fr);
  gap: 16px;
}

.panel {
  position: relative;
  border-radius: var(--radius-lg);
  border: 2px solid rgba(255, 255, 255, 0.45);
  background: linear-gradient(135deg, rgba(20, 70, 150, 0.55), rgba(15, 50, 120, 0.5));
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(12px);
  overflow: hidden;
}

.panel::after {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  right: -100px;
  top: -100px;
  background: radial-gradient(circle at center, rgba(255, 222, 71, 0.15), transparent 70%);
  pointer-events: none;
}

.game-panel {
  padding: 18px;
}

.side-panel {
  padding: 14px;
  display: grid;
  gap: 14px;
  align-content: start;
}

.mini-panel {
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.05));
  padding: 14px;
  backdrop-filter: blur(8px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.mini-panel h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
  letter-spacing: 0.3px;
}

.mini-panel p {
  margin: 6px 0;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.note {
  margin: 0 0 12px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.88rem;
  font-style: italic;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.stat-box {
  border-radius: 16px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0.08));
  padding: 12px 8px;
  backdrop-filter: blur(10px);
  animation: slide-up 0.6s ease-out backwards;
}

.stat-box:nth-child(1) { animation-delay: 0.1s; }
.stat-box:nth-child(2) { animation-delay: 0.2s; }
.stat-box:nth-child(3) { animation-delay: 0.3s; }
.stat-box:nth-child(4) { animation-delay: 0.4s; }

.stat-box span {
  display: block;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 900;
}

.stat-box strong {
  font-size: clamp(1.4rem, 3.2vw, 2rem);
  color: var(--accent);
  text-shadow: 0 4px 12px rgba(255, 222, 71, 0.3);
}

.tower-wrap {
  margin-top: 10px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.08);
  padding: 10px;
}

.tower {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 6px;
}

.tower-step {
  border-radius: 14px;
  min-height: 42px;
  display: grid;
  place-items: center;
  border: 2px solid rgba(255, 255, 255, 0.4);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0.08));
  font-weight: 900;
  font-size: 0.88rem;
  opacity: 0.6;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.tower-step.done {
  opacity: 1;
  background: linear-gradient(180deg, #4eb88f, #2a8659);
  border-color: #7ffe9f;
  filter: brightness(1.15) saturate(1.2);
  box-shadow: 0 8px 20px rgba(78, 184, 143, 0.3);
}

.tower-step.current {
  opacity: 1;
  border-color: #ffff99;
  background: linear-gradient(180deg, rgba(255, 222, 71, 0.8), rgba(255, 178, 56, 0.7));
  color: #0a1f4a;
  font-weight: 900;
  box-shadow: 0 0 30px rgba(255, 222, 71, 0.6), inset 0 2px 8px rgba(255, 255, 255, 0.4);
  transform: scale(1.08);
  animation: pulse-glow 1.4s ease-in-out infinite;
}

.tower-step.boss {
  border-color: #ff9966;
  background: linear-gradient(180deg, rgba(255, 200, 87, 0.7), rgba(255, 128, 56, 0.65));
  color: #0a1f4a;
  font-weight: 900;
  opacity: 0.85;
  box-shadow: 0 8px 24px rgba(255, 159, 61, 0.35);
}

.tower-step.boss.current {
  border-color: #ff6b6b;
  background: linear-gradient(180deg, rgba(255, 107, 107, 0.9), rgba(255, 61, 85, 0.8));
  color: #fff;
  box-shadow: 0 0 40px rgba(255, 107, 107, 0.7);
  animation: pulse-glow 1s ease-in-out infinite;
}

.tower-meta {
  margin-top: 8px;
  display: grid;
  gap: 5px;
}

.progress-track {
  width: 100%;
  height: 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.18);
  overflow: hidden;
}

.progress-fill {
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #5fffb8, #ffde47, #ff9f3d);
  transition: width 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 0 16px rgba(95, 255, 184, 0.5);
}

.question-topline {
  margin: 0;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 1.1px;
  font-size: 0.76rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.6);
}

.status-line {
  margin: 10px 0 12px;
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.3px;
}

.status-line.good {
  color: #5fffb8;
  text-shadow: 0 0 12px rgba(95, 255, 184, 0.3);
}

.status-line.warn {
  color: #ffe8a8;
  text-shadow: 0 0 12px rgba(255, 232, 168, 0.3);
}

.status-line.bad {
  color: #ff8a8a;
  text-shadow: 0 0 12px rgba(255, 138, 138, 0.3);
}

.answers {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 4px;
}

.answer-btn,
.start-btn,
.overlay-actions button,
#saveScoreBtn,
#restartBtn {
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 14px;
  min-height: 52px;
  padding: 12px 14px;
  font-size: 1.05rem;
  font-weight: 900;
  letter-spacing: 0.4px;
  color: var(--ink);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.15));
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
  position: relative;
  overflow: hidden;
}

.answer-btn:hover:not(:disabled),
.start-btn:hover:not(:disabled),
.overlay-actions button:hover:not(:disabled),
#saveScoreBtn:hover:not(:disabled),
#restartBtn:hover:not(:disabled) {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
  border-color: rgba(255, 255, 255, 0.8);
}

.answer-btn:active:not(:disabled),
.start-btn:active:not(:disabled),
.overlay-actions button:active:not(:disabled),
#saveScoreBtn:active:not(:disabled),
#restartBtn:active:not(:disabled) {
  transform: translateY(-1px);
}

.answer-btn.good {
  border-color: rgba(45, 223, 139, 0.9);
  background: linear-gradient(135deg, rgba(45, 223, 139, 0.8), rgba(20, 160, 80, 0.7));
  box-shadow: 0 10px 30px rgba(45, 223, 139, 0.4);
  animation: pop 0.4s ease-out;
}

.answer-btn.bad {
  border-color: rgba(255, 85, 85, 0.9);
  background: linear-gradient(135deg, rgba(255, 85, 85, 0.8), rgba(200, 40, 60, 0.7));
  box-shadow: 0 10px 30px rgba(255, 85, 85, 0.4);
  animation: pop 0.4s ease-out;
}

.start-btn {
  margin-top: 12px;
  width: 100%;
  background: linear-gradient(135deg, rgba(255, 222, 71, 0.95), rgba(255, 159, 61, 0.85));
  color: #0a1f4a;
  border-color: rgba(255, 255, 200, 0.8);
  font-size: 1.15rem;
  box-shadow: 0 12px 32px rgba(255, 159, 61, 0.35);
}

.start-btn:hover {
  background: linear-gradient(135deg, rgba(255, 235, 100, 0.98), rgba(255, 175, 85, 0.88));
  box-shadow: 0 16px 40px rgba(255, 159, 61, 0.5);
}

.question-card {
  margin-top: 14px;
  border-radius: 22px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  background: linear-gradient(135deg, rgba(20, 70, 140, 0.75), rgba(10, 45, 110, 0.7));
  padding: 18px;
  backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), 0 10px 28px rgba(0, 0, 0, 0.25);
  transition: all 0.4s ease;
}

.question-card.boss-round {
  border: 2.5px solid #ff6b6b;
  background: linear-gradient(135deg, rgba(120, 40, 40, 0.85), rgba(80, 20, 20, 0.8));
  box-shadow: inset 0 1px 0 rgba(255, 100, 100, 0.25), 0 0 30px rgba(255, 107, 107, 0.4), 0 10px 28px rgba(0, 0, 0, 0.35);
}

.question-card h2 {
  margin: 8px 0 0;
  font-size: clamp(1.9rem, 4.2vw, 2.7rem);
  letter-spacing: 0.5px;
  color: #ffffff;
  text-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
  font-weight: 900;
}

.boss-round h2 {
  color: #ff9999;
  font-size: clamp(2.1rem, 4.6vw, 3rem);
  text-shadow: 0 0 12px rgba(255, 107, 107, 0.6), 0 3px 10px rgba(0, 0, 0, 0.5);
}

.highscore-list {
  margin: 0;
  padding-left: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.highscore-list li {
  display: grid;
  grid-template-columns: 32px 1fr auto;
  align-items: center;
  gap: 9px;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  border-radius: 12px;
  padding: 9px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04));
  backdrop-filter: blur(6px);
  transition: all 0.2s ease;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.highscore-list li:hover {
  border-color: rgba(255, 255, 255, 0.6);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.08));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), 0 4px 12px rgba(0, 0, 0, 0.2);
}

.highscore-list li strong {
  color: var(--accent);
  font-size: 1.15rem;
  text-shadow: 0 2px 6px rgba(255, 222, 71, 0.2);
}

.highscore-list li p {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(3, 11, 33, 0.66);
  display: grid;
  place-items: center;
  padding: 16px;
  z-index: 200;
}

.overlay-card {
  width: min(520px, 94vw);
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(16, 65, 139, 0.96), rgba(7, 34, 83, 0.95));
  box-shadow: var(--shadow);
  padding: 18px;
}

.overlay-card h2 {
  margin: 0;
  font-size: clamp(1.5rem, 4vw, 2rem);
}

.save-area {
  margin-top: 10px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.1);
  padding: 10px;
}

.save-row {
  margin-top: 7px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.save-row input {
  min-height: 42px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.48);
  background: rgba(255, 255, 255, 0.9);
  color: #082341;
  padding: 0 10px;
  font: inherit;
  font-weight: 700;
}

.overlay-actions {
  margin-top: 12px;
}

.overlay-actions button {
  width: 100%;
}

.hidden {
  display: none !important;
}

#gameOverOverlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.85), rgba(20, 0, 60, 0.75));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 999;
  backdrop-filter: blur(8px);
  animation: fadeIn 0.4s ease-in-out;
}

#gameOverOverlay.hidden {
  display: none;
}

#gameOverOverlay h2 {
  margin-top: 0;
  margin-bottom: 18px;
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  color: var(--accent);
  text-shadow: 0 4px 16px rgba(255, 222, 71, 0.3);
  text-align: center;
  font-weight: 900;
  letter-spacing: 1px;
}

#gameOverOverlay .final-score {
  font-size: clamp(1.4rem, 3.5vw, 2.1rem);
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 20px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

#gameOverOverlay form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 90%;
  max-width: 280px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 18px;
  padding: 24px;
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

#gameOverOverlay input[type="text"],
#gameOverOverlay button {
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  transition: all 0.2s ease;
}

#gameOverOverlay input[type="text"] {
  background: rgba(255, 255, 255, 0.15);
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  color: #ffffff;
}

#gameOverOverlay input[type="text"]::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

#gameOverOverlay input[type="text"]:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.22);
  border-color: var(--accent);
  box-shadow: 0 0 16px rgba(255, 222, 71, 0.3);
}

#gameOverOverlay button {
  background: linear-gradient(135deg, var(--accent), #ffc930);
  color: #1a1a1a;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(255, 222, 71, 0.25);
}

#gameOverOverlay button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(255, 222, 71, 0.35);
}

#gameOverOverlay button:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(255, 222, 71, 0.2);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 900px) {
  .hero {
    padding: 16px 0;
  }

  .hero-art {
    display: none;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  .tower {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .answers {
    grid-template-columns: 1fr;
  }

  .tower {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}