* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-cyan: #00e5ff;
  --secondary-cyan: #00b8d4;
  --tertiary-cyan: #0097a7;
  --purple: #7000ff;
  --pink: #ff1493;
  --bg-dark: #0a1628;
  --bg-darker: #05111f;
  --bg-card: #162238;
  --text-main: #e2e8f0;
  --text-dim: #94a3b8;
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;
}

body {
  font-family:
    "Pretendard",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow-x: hidden;
  /* perspective: 1000px; - 3D 효과를 위해 컨테이너로 이동 */
  word-break: keep-all;
  overflow-wrap: break-word;
}

/* 파티클 배경 캔버스 */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* 그리드 배경 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: 0;
  pointer-events: none;
  animation: grid-move 20s linear infinite;
}

/* 피버 모드 (Fever Mode) */
body.fever-mode::before {
  background-image:
    linear-gradient(rgba(255, 20, 147, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 20, 147, 0.1) 1px, transparent 1px);
  animation: grid-move 5s linear infinite;
}

/* 보스 모드 (Boss Mode) */
body.boss-mode::before {
  background-image:
    linear-gradient(rgba(239, 68, 68, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(239, 68, 68, 0.1) 1px, transparent 1px);
  animation: grid-move 2s linear infinite;
}

body.boss-mode {
  box-shadow: inset 0 0 50px rgba(239, 68, 68, 0.2);
}

@keyframes grid-move {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 40px 40px;
  }
}

.container {
  width: 100%;
  max-width: 1400px;
  min-height: 100vh;
  min-height: 100dvh;
  position: relative;
  z-index: 1;
  padding: 20px;
  perspective: 1000px; /* body에서 이동됨 */
}

.screen {
  display: none;
  min-height: 100vh;
  min-height: 100dvh;
  animation: screen-fade-in 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes screen-fade-in {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.screen.active {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.character-screen {
  align-items: center;
  justify-content: center;
}

/* ===== 메인 화면 ===== */

.main-content {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

/* 왼쪽: 로봇 섹션 */
.robot-section {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 600px;
}

.robot-glow-effect {
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(
    circle,
    rgba(0, 229, 255, 0.3) 0%,
    transparent 70%
  );
  border-radius: 50%;
  filter: blur(40px);
  animation: glow-pulse 4s ease-in-out infinite;
  z-index: 0;
}

@keyframes glow-pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.4;
  }
  50% {
    transform: scale(1.2);
    opacity: 0.8;
  }
}

/* CSS 로봇 컨테이너 */
.css-robot-container {
  position: relative;
  width: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  animation: float-robot 6s ease-in-out infinite;
  z-index: 1;
  cursor: pointer;
  transition: transform 0.3s ease;
}

@keyframes float-robot {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }
  25% {
    transform: translateY(-20px) rotate(1deg);
  }
  50% {
    transform: translateY(0px) rotate(0deg);
  }
  75% {
    transform: translateY(-10px) rotate(-1deg);
  }
}

/* 안테나 */
.robot-antenna {
  position: relative;
  width: 3px;
  height: 40px;
  background: linear-gradient(to bottom, var(--primary-cyan), transparent);
  display: flex;
  justify-content: center;
  filter: drop-shadow(0 0 8px var(--primary-cyan));
}

.antenna-ball {
  position: absolute;
  top: -8px;
  width: 12px;
  height: 12px;
  background: var(--primary-cyan);
  border-radius: 50%;
  box-shadow: 0 0 15px var(--primary-cyan);
  animation: blink-antenna 2s infinite;
}

@keyframes blink-antenna {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}

/* 머리 */
.robot-head {
  position: relative;
  width: 180px;
  height: 140px;
  background: rgba(10, 22, 40, 0.8);
  border: 2px solid var(--primary-cyan);
  border-radius: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow:
    0 0 30px rgba(0, 229, 255, 0.2),
    inset 0 0 20px rgba(0, 229, 255, 0.1);
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease;
}

/* 로봇 상호작용 애니메이션 클래스 */
.robot-shake-anim {
  animation: head-shake 0.5s ease-in-out;
}

.robot-nod-anim {
  animation: head-nod 0.5s ease-in-out;
}

.robot-tilt-anim {
  animation: head-tilt 1s ease-in-out infinite;
}

@keyframes head-shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-10px) rotate(-5deg);
  }
  75% {
    transform: translateX(10px) rotate(5deg);
  }
}

@keyframes head-nod {
  0%,
  100% {
    transform: translateY(0);
  }
  25% {
    transform: translateY(-10px);
  }
  75% {
    transform: translateY(5px);
  }
}

@keyframes head-tilt {
  0%,
  100% {
    transform: rotate(0);
  }
  50% {
    transform: rotate(10deg);
  }
}

.head-display {
  position: absolute;
  top: 15px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6rem;
  color: var(--primary-cyan);
  letter-spacing: 2px;
  opacity: 0.7;
}

.robot-eyes {
  display: flex;
  gap: 30px;
  z-index: 2;
}

.eye {
  width: 30px;
  height: 30px;
  background: var(--primary-cyan);
  border-radius: 50%;
  box-shadow: 0 0 20px var(--primary-cyan);
  position: relative;
  transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.eye::after {
  content: "";
  position: absolute;
  top: 5px;
  right: 5px;
  width: 8px;
  height: 8px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 50%;
}

.robot-mouth {
  position: absolute;
  bottom: 30px;
  width: 40px;
  height: 4px;
  background: var(--primary-cyan);
  border-radius: 2px;
  box-shadow: 0 0 10px var(--primary-cyan);
  transition: width 0.3s;
}

.robot-cheek {
  position: absolute;
  top: 65px;
  width: 15px;
  height: 8px;
  background: var(--pink);
  border-radius: 50%;
  opacity: 0.6;
  filter: blur(2px);
}

.left-cheek {
  left: 30px;
}
.right-cheek {
  right: 30px;
}

/* 몸통 */
.robot-body {
  position: relative;
  width: 140px;
  height: 160px;
  background: linear-gradient(
    135deg,
    rgba(22, 34, 56, 0.9),
    rgba(10, 22, 40, 0.9)
  );
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.body-star {
  position: absolute;
  top: -10px;
  left: -15px;
  font-size: 2rem;
  animation: spin-star 3s linear infinite;
  filter: drop-shadow(0 0 10px rgba(255, 215, 0, 0.5));
}

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

.body-display {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  color: var(--secondary-cyan);
  margin-bottom: 15px;
  letter-spacing: 1px;
  text-shadow: 0 0 5px var(--secondary-cyan);
}

.body-screen {
  width: 80px;
  height: 60px;
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
}

.body-screen::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: rgba(0, 229, 255, 0.5);
  box-shadow: 0 0 10px var(--primary-cyan);
  animation: scan-line 2s linear infinite;
}

@keyframes scan-line {
  0% {
    top: 0;
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    top: 100%;
    opacity: 0;
  }
}

.body-leds {
  display: flex;
  gap: 8px;
  margin-top: 20px;
}

.led {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  box-shadow: 0 0 8px currentColor;
}

.red-led {
  background-color: #ff5f56;
  color: #ff5f56;
  animation: blink-led 1s infinite alternate;
}
.yellow-led {
  background-color: #ffbd2e;
  color: #ffbd2e;
  animation: blink-led 1.2s infinite alternate 0.3s;
}
.green-led {
  background-color: #27c93f;
  color: #27c93f;
  animation: blink-led 0.8s infinite alternate 0.6s;
}

@keyframes blink-led {
  from {
    opacity: 0.4;
  }
  to {
    opacity: 1;
  }
}

/* 3D 홀로그램 링 */
.hologram-rings {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotateX(70deg);
  width: 300px;
  height: 300px;
  z-index: -1;
  pointer-events: none;
}

.holo-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  border: 1px solid rgba(0, 229, 255, 0.3);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.1);
}

.ring-1 {
  width: 200px;
  height: 200px;
  animation: spin-ring 10s linear infinite;
  border-left-color: var(--primary-cyan);
}

.ring-2 {
  width: 260px;
  height: 260px;
  animation: spin-ring-reverse 15s linear infinite;
  border-right-color: var(--purple);
}

.ring-3 {
  width: 320px;
  height: 320px;
  animation: spin-ring 20s linear infinite;
  border-top-color: var(--pink);
}

@keyframes spin-ring {
  from {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

@keyframes spin-ring-reverse {
  from {
    transform: translate(-50%, -50%) rotate(360deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(0deg);
  }
}

/* 떠다니는 3D 아이콘 */
.floating-3d-icons {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 2;
  pointer-events: none;
}

.icon-3d {
  position: absolute;
  font-size: 2rem;
  filter: drop-shadow(0 5px 15px rgba(0, 0, 0, 0.3));
  animation: float-icon 4s ease-in-out infinite;
  opacity: 0.8;
}

.icon-code {
  top: 10%;
  left: 10%;
  animation-delay: 0s;
  color: var(--primary-cyan);
}
.icon-ai {
  top: 20%;
  right: 15%;
  animation-delay: 1s;
}
.icon-rocket {
  bottom: 20%;
  left: 15%;
  animation-delay: 2s;
}
.icon-brain {
  bottom: 30%;
  right: 10%;
  animation-delay: 1.5s;
}
.icon-lightning {
  top: 50%;
  left: 5%;
  animation-delay: 0.5s;
  color: var(--warning);
}
.icon-star {
  top: 15%;
  right: 40%;
  animation-delay: 2.5s;
  color: var(--purple);
}

@keyframes float-icon {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(10deg);
  }
}

/* 오른쪽: 콘텐츠 섹션 */
.content-section {
  padding: 40px;
  background: rgba(22, 34, 56, 0.6);
  backdrop-filter: blur(20px);
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
}

.content-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(
    90deg,
    var(--primary-cyan),
    var(--purple),
    var(--pink)
  );
}

.logo-badge {
  display: inline-block;
  font-size: 2.5rem;
  margin-bottom: 15px;
  animation:
    rotate-badge 10s linear infinite,
    float 3s ease-in-out infinite;
  filter: drop-shadow(0 0 20px rgba(0, 229, 255, 0.6));
}

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

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-15px);
  }
}

.main-title {
  font-family: "Space Grotesk", sans-serif;
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary-cyan);
  margin-bottom: 10px;
  text-shadow:
    0 0 20px rgba(0, 229, 255, 0.8),
    0 0 40px rgba(0, 229, 255, 0.4);
  letter-spacing: -0.5px;
  position: relative;
}

/* 글리치 효과 */
.glitch {
  position: relative;
}

.glitch:hover::before,
.glitch:hover::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.glitch:hover::before {
  animation: glitch-1 0.3s infinite;
  color: #ff00de;
  z-index: -1;
}

.glitch:hover::after {
  animation: glitch-2 0.3s infinite;
  color: #00fff9;
  z-index: -2;
}

@keyframes glitch-1 {
  0%,
  100% {
    transform: translate(0);
  }
  33% {
    transform: translate(-2px, 2px);
  }
  66% {
    transform: translate(2px, -2px);
  }
}

@keyframes glitch-2 {
  0%,
  100% {
    transform: translate(0);
  }
  33% {
    transform: translate(2px, -2px);
  }
  66% {
    transform: translate(-2px, 2px);
  }
}

.subtitle {
  font-size: 1rem;
  color: var(--text-dim);
  font-weight: 400;
  letter-spacing: 1px;
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.subtitle::before {
  content: "";
  display: block;
  width: 30px;
  height: 2px;
  background: var(--primary-cyan);
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 30px;
}

.module-card {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 16px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  cursor: default;
}

.module-card:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-5px);
  border-color: rgba(0, 229, 255, 0.3);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.module-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.module-icon {
  font-size: 1.5rem;
  animation: pulse-icon 2s infinite;
}

@keyframes pulse-icon {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

.module-badge {
  font-size: 0.75rem;
  padding: 4px 10px;
  background: rgba(0, 229, 255, 0.1);
  color: var(--primary-cyan);
  border-radius: 20px;
  font-weight: 600;
  border: 1px solid rgba(0, 229, 255, 0.3);
}

.module-desc {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.5;
}

.module-shine {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to right,
    transparent 0%,
    rgba(255, 255, 255, 0.05) 50%,
    transparent 100%
  );
  transform: skewX(-20deg) translateX(-150%);
  transition: transform 0.5s;
}

.module-card:hover .module-shine {
  transform: skewX(-20deg) translateX(150%);
  transition: transform 0.8s;
}

/* 시작 버튼 */
.start-button {
  width: 100%;
  padding: 20px;
  margin-top: 30px;
  background: linear-gradient(
    90deg,
    var(--primary-cyan),
    var(--secondary-cyan)
  );
  border: none;
  border-radius: 16px;
  color: var(--bg-darker);
  font-size: 1.2rem;
  font-weight: 800;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 10px 30px rgba(0, 229, 255, 0.3);
}

.start-button:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 229, 255, 0.5);
  filter: brightness(1.1);
}

.start-button:active {
  transform: translateY(-2px);
}

.button-content {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  position: relative;
  z-index: 2;
}

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

.button-ripple {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition:
    width 0.6s ease,
    height 0.6s ease;
}

.start-button:hover .button-ripple {
  width: 400px;
  height: 400px;
}

/* 하단 텍스트 */
.footer-text {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-dim);
  opacity: 0.6;
  margin-top: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

/* ===== 퀴즈 화면 ===== */
/* ===== Game UI Components ===== */
.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(16, 24, 39, 0.8);
  padding: 15px 25px;
  border-radius: 16px;
  border: 1px solid rgba(0, 229, 255, 0.2);
  margin-bottom: 20px;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hp-container,
.score-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
}

.hp-label,
.score-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-weight: 700;
  letter-spacing: 1px;
}

.hp-hearts {
  display: flex;
  gap: 5px;
  font-size: 1.5rem;
}

.heart {
  opacity: 0.3;
  filter: grayscale(100%);
  transition: all 0.3s ease;
}

.heart.active {
  opacity: 1;
  filter: grayscale(0%);
  animation: heart-beat 1.5s infinite;
}

@keyframes heart-beat {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

.timer-container {
  flex: 1;
  margin: 0 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
}

.timer-bar-bg {
  width: 100%;
  height: 10px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 5px;
  overflow: hidden;
  position: relative;
}

.timer-bar {
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, #10b981, #00e5ff);
  border-radius: 5px;
  transition:
    width 0.1s linear,
    background 0.3s ease;
}

.timer-bar.warning {
  background: linear-gradient(90deg, #f59e0b, #ef4444);
  animation: timer-blink 0.5s infinite;
}

@keyframes timer-blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.timer-text {
  font-family: "JetBrains Mono", monospace;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary-cyan);
}

.score-value {
  font-family: "JetBrains Mono", monospace;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--warning);
}

.combo-container {
  position: absolute;
  top: 120px;
  right: 20px;
  text-align: center;
  transform: rotate(10deg);
  z-index: 10;
}

.combo-count {
  font-size: 3rem;
  font-weight: 900;
  color: #ff00de;
  text-shadow: 0 0 10px #ff00de;
  font-family: "JetBrains Mono", monospace;
  display: block;
}

.combo-label {
  font-size: 1rem;
  color: #fff;
  font-weight: 700;
  letter-spacing: 2px;
}

@keyframes combo-pop {
  0% {
    transform: scale(0.5) rotate(0deg);
    opacity: 0;
  }
  50% {
    transform: scale(1.5) rotate(15deg);
    opacity: 1;
  }
  100% {
    transform: scale(1) rotate(10deg);
    opacity: 1;
  }
}

.skills-container {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.skill-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  padding: 10px 15px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  cursor: pointer;
  transition: all 0.3s ease;
}

.skill-btn:hover:not(:disabled) {
  background: rgba(0, 229, 255, 0.2);
  border-color: var(--primary-cyan);
}

.skill-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  filter: grayscale(100%);
}

.skill-icon {
  font-size: 1.2rem;
}

.skill-status {
  font-size: 0.7rem;
  background: rgba(0, 0, 0, 0.3);
  padding: 2px 6px;
  border-radius: 4px;
}

.skill-desc {
  font-size: 0.85rem;
  color: var(--text-dim);
  text-align: right;
}

/* Damage Effect */
.shake {
  animation: shake 0.5s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

@keyframes shake {
  10%,
  90% {
    transform: translate3d(-1px, 0, 0);
  }
  20%,
  80% {
    transform: translate3d(2px, 0, 0);
  }
  30%,
  50%,
  70% {
    transform: translate3d(-4px, 0, 0);
  }
  40%,
  60% {
    transform: translate3d(4px, 0, 0);
  }
}

.damage-flash {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 0, 0, 0.3);
  pointer-events: none;
  z-index: 9999;
  animation: flash 0.2s ease-out forwards;
}

@keyframes flash {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

.quiz-container {
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
  padding: 20px;
}

.quiz-header {
  margin-bottom: 30px;
}

.progress-section {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
}

.question-num {
  font-family: "JetBrains Mono", monospace;
  color: var(--primary-cyan);
  font-weight: 700;
  font-size: 1.1rem;
}

.progress-bg {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  margin: 0 15px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--primary-cyan);
  border-radius: 3px;
  transition: width 0.3s ease;
  box-shadow: 0 0 10px var(--primary-cyan);
}

.progress-percent {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.9rem;
  color: var(--text-dim);
}

.question-container {
  margin-bottom: 30px;
}

.question-text {
  font-size: 1.4rem;
  line-height: 1.6;
  margin-bottom: 30px;
  font-weight: 600;
  word-break: keep-all;
}

.options-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.option-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 18px 25px;
  border-radius: 12px;
  color: var(--text-main);
  font-size: 1rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 15px;
  position: relative;
  overflow: hidden;
  font-family: "Pretendard", sans-serif;
  animation: slide-in 0.5s ease forwards;
  opacity: 0;
  transform: translateX(-20px);
}

@keyframes slide-in {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.option-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(0, 229, 255, 0.3);
  transform: translateX(5px);
}

.option-idx {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 28px;
  height: 28px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-cyan);
  flex-shrink: 0;
}

.option-btn.correct {
  background: rgba(16, 185, 129, 0.2);
  border-color: var(--success);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.2);
}

.option-btn.correct .option-idx {
  background: var(--success);
  color: #fff;
}

.option-btn.incorrect {
  background: rgba(239, 68, 68, 0.2);
  border-color: var(--error);
}

.option-btn.incorrect .option-idx {
  background: var(--error);
  color: #fff;
}

/* 피드백 섹션 */
.feedback-container {
  margin-top: 30px;
  background: rgba(16, 24, 39, 0.9);
  border-radius: 16px;
  padding: 25px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  animation: fade-up 0.4s ease forwards;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.feedback-container.hidden {
  display: none;
}

.feedback-content {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: start;
}

.feedback-icon-wrapper {
  grid-row: span 2;
}

.feedback-icon {
  font-size: 2.5rem;
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.feedback-message {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 5px;
}

.explanation-text {
  font-size: 0.95rem;
  color: var(--text-dim);
  line-height: 1.6;
  grid-column: 2;
}

.next-button {
  align-self: flex-end;
  background: var(--primary-cyan);
  color: var(--bg-darker);
  border: none;
  padding: 12px 25px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s ease;
}

.next-button:hover {
  transform: translateX(5px);
  box-shadow: 0 5px 15px rgba(0, 229, 255, 0.3);
}

/* ===== 결과 화면 ===== */
.result-container {
  max-width: 600px;
  width: 100%;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
}

.result-header {
  margin-bottom: 20px;
}

.result-badge {
  font-size: 4rem;
  margin-bottom: 10px;
  animation: pop-in 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes pop-in {
  from {
    transform: scale(0);
  }
  to {
    transform: scale(1);
  }
}

.result-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 10px;
  background: linear-gradient(to right, #fff, var(--primary-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.result-subtitle {
  color: var(--text-dim);
  font-size: 1.1rem;
}

.rank-display {
  font-size: 2rem;
  font-weight: 800;
  color: var(--warning);
  margin-top: 10px;
  text-shadow: 0 0 15px rgba(245, 158, 11, 0.5);
  animation: slide-up-rank 0.5s ease-out;
}

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

.score-display {
  position: relative;
  width: 240px;
  height: 240px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.score-ring {
  position: relative;
  width: 100%;
  height: 100%;
}

.score-circle-svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.score-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.1);
  stroke-width: 15;
}

.score-fill {
  fill: none;
  stroke: url(#score-gradient); /* JS에서 그라데이션 정의 필요 */
  stroke-width: 15;
  stroke-linecap: round;
  stroke-dasharray: 628; /* 2 * PI * 100 */
  stroke-dashoffset: 628;
  transition: stroke-dashoffset 1.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.score-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.final-score {
  font-size: 3.5rem;
  font-weight: 800;
  color: #fff;
  font-family: "Space Grotesk", sans-serif;
  line-height: 1;
}

.score-max {
  margin-top: 10px;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.result-feedback {
  background: rgba(255, 255, 255, 0.05);
  padding: 25px;
  border-radius: 16px;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 20px;
  text-align: left;
}

.robot-avatar-result {
  width: 60px;
  height: 60px;
  background: rgba(0, 229, 255, 0.2);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
  border: 2px solid var(--primary-cyan);
}

.avatar-img-small {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.instructor-message {
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--text-main);
}

.restart-button,
.share-button {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  padding: 15px 30px;
  border-radius: 12px;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.3s ease;
  width: 100%;
  justify-content: center;
}

.restart-button:hover,
.share-button:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: #fff;
  transform: translateY(-3px);
}

.share-button {
  background: var(--primary-cyan);
  color: var(--bg-darker);
  border: none;
  margin-top: 10px;
}

.share-button:hover {
  background: var(--secondary-cyan);
  box-shadow: 0 10px 20px rgba(0, 229, 255, 0.3);
}

/* 모바일 대응 */
@media (max-width: 768px) {
  .main-content {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .robot-section {
    min-height: 400px;
  }

  .main-title {
    font-size: 2.2rem;
  }

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

  .game-header {
    flex-wrap: wrap;
    gap: 15px;
    padding: 15px;
  }

  .timer-container {
    order: 3;
    width: 100%;
    margin: 10px 0 0 0;
  }
}

/* 콤보 팝업 */
.combo-popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 4rem;
  font-weight: 900;
  color: #ff00de;
  text-shadow:
    0 0 10px #fff,
    0 0 20px #ff00de,
    0 0 40px #ff00de;
  z-index: 10000;
  pointer-events: none;
  font-family: "JetBrains Mono", monospace;
  animation: combo-popup-anim 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275)
    forwards;
}

@keyframes combo-popup-anim {
  0% {
    transform: translate(-50%, -50%) scale(0.5) rotate(-10deg);
    opacity: 0;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.5) rotate(10deg);
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) scale(1) rotate(0deg);
    opacity: 0;
  }
}

/* 보스 모드 스타일 강화 */
body.boss-mode {
  box-shadow: inset 0 0 100px rgba(239, 68, 68, 0.5);
}

body.boss-mode .game-header {
  border-color: rgba(239, 68, 68, 0.5);
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}

body.boss-mode .timer-bar {
  background: linear-gradient(90deg, #f59e0b, #ef4444);
}

body.boss-mode .option-btn:hover {
  border-color: rgba(239, 68, 68, 0.8);
  background: rgba(239, 68, 68, 0.1);
}

/* 비디오 오버레이 */
.video-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #000;
  z-index: 10000;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.5s ease;
}

.video-container {
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.video-player {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.skip-btn {
  position: absolute;
  bottom: 30px;
  right: 30px;
  padding: 12px 24px;
  background-color: rgba(0, 0, 0, 0.5);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 30px;
  cursor: pointer;
  font-size: 16px;
  backdrop-filter: blur(5px);
  transition: all 0.3s ease;
  z-index: 10002;
}

.skip-btn:hover {
  background-color: rgba(0, 229, 255, 0.3);
  border-color: var(--primary-cyan);
}

.hidden {
  display: none !important;
}

/* -------------------------------------------------------------------------- */
/* 캐릭터 이미지 스타일 (Pixel Art & Responsive) */
/* -------------------------------------------------------------------------- */

.character-img-container {
    width: 240px;
    height: 240px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 20px;
    border: 2px solid var(--primary-cyan);
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
    overflow: hidden;
}

.pixel-character {
    width: 100%;
    height: 100%;
    object-fit: contain;
    image-rendering: pixelated; /* 픽셀 아트 선명하게 */
    filter: drop-shadow(0 5px 10px rgba(0,0,0,0.5));
    transition: transform 0.3s ease;
}

/* 프리뷰 이미지 */
#preview-character-img {
    transform: scale(1.1);
}

/* 메인 화면 캐릭터 컨테이너 */
.character-display-section {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 5;
    animation: float-char 4s ease-in-out infinite;
}

@keyframes float-char {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* 메인 캐릭터 사이즈 */
.main-size {
    width: 100%;
    height: 100%;
    max-width: 280px;
}

/* 결과 화면 캐릭터 */
.result-character-display {
    width: 220px;
    height: 220px;
    margin: 0 auto 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 2px solid var(--primary-cyan);
    box-shadow: 0 0 30px rgba(0, 229, 255, 0.3);
}

.result-size {
    width: 90%;
    height: 90%;
}

/* 마스터 등급 오라 효과 */
.character-effect-aura {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(255, 20, 147, 0.4) 0%, transparent 70%);
    z-index: -1;
    border-radius: 50%;
    animation: aura-pulse 2s infinite alternate;
    pointer-events: none;
}

@keyframes aura-pulse {
    from { opacity: 0.5; transform: translate(-50%, -50%) scale(0.9); }
    to { opacity: 0.8; transform: translate(-50%, -50%) scale(1.1); }
}

/* 인게임 캐릭터 표시 */
.quiz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    background: rgba(0, 0, 0, 0.2);
    padding: 10px 20px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.ingame-character-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-right: 20px;
}

.ingame-character-container {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: 2px solid var(--primary-cyan);
    background: rgba(0, 229, 255, 0.1);
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.3);
}

.ingame-size {
    width: 90%;
    height: 90%;
}

.ingame-character-label {
    font-size: 0.7rem;
    color: var(--primary-cyan);
    margin-top: 5px;
    font-weight: bold;
    letter-spacing: 1px;
}

.progress-section {
    flex-grow: 1;
}

/* 모바일 대응 */
@media (max-width: 768px) {
    .quiz-header {
        flex-direction: row; /* 모바일에서도 가로 배치 유지 */
        padding: 10px;
    }
    
    .ingame-character-container {
        width: 60px;
        height: 60px;
    }
}

@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }

    .robot-section {
        min-height: 350px; /* 모바일에서 높이 축소 */
        order: -1; /* 로봇을 위로 */
    }

    .character-display-section {
        width: 200px;
        height: 200px;
    }
    
    .character-effect-aura {
        width: 250px;
        height: 250px;
    }

    .hologram-rings {
        width: 200px;
        height: 200px;
    }
    
    .intro-title {
        font-size: 2.5rem; /* 타이틀 크기 축소 */
        letter-spacing: 2px;
    }
    
    .intro-subtitle {
        font-size: 1rem;
    }
    
    .character-modal, .ranking-modal {
        padding: 20px;
    }
    
    .character-content, .ranking-content {
        width: 100%;
        padding: 20px;
    }
    
    .character-preview {
        height: 220px;
    }
    
    .ranking-list-header {
        font-size: 0.8rem;
    }
    
    .rank-item {
        font-size: 0.8rem;
        padding: 8px 5px;
    }
    
    /* 모바일에서는 랭킹 날짜 숨기기 (공간 부족) */
    .rank-col-date {
        display: none;
    }
    
    .ranking-list .rank-item {
        grid-template-columns: 1fr 3fr 2fr; /* 날짜 컬럼 제외 */
    }
    
    .ranking-list-header {
        grid-template-columns: 1fr 3fr 2fr; /* 날짜 컬럼 제외 */
    }
    
    .ranking-list-header .rank-col-date {
        display: none;
    }
}


/* 아케이드 스타일 랭킹 보드 */
.ranking-content.arcade-style {
  background: #000;
  border: 4px double var(--primary-cyan);
  box-shadow: 0 0 20px var(--primary-cyan), inset 0 0 50px rgba(0, 229, 255, 0.2);
  font-family: 'Press Start 2P', cursive, 'JetBrains Mono', monospace; /* 픽셀 폰트 느낌 */
}

.ranking-title.arcade-title {
  font-family: 'Press Start 2P', cursive, sans-serif; /* 구글 폰트 없으면 sans-serif */
  color: #ff00ff;
  text-shadow: 2px 2px #00e5ff;
  letter-spacing: 2px;
  animation: blink-title 1s infinite alternate;
}

@keyframes blink-title {
  from { opacity: 1; text-shadow: 2px 2px #00e5ff; }
  to { opacity: 0.8; text-shadow: 4px 4px #00e5ff; }
}

.ranking-list.arcade-list {
  border: 2px solid #333;
  background: #111;
  padding: 10px;
}

.rank-item.arcade-item {
  border-bottom: 1px dashed #444;
  font-family: 'Courier New', monospace;
  color: #0f0; /* 그린 모니터 느낌 */
}
.rank-item.arcade-item:hover {
  background: #003300;
  color: #fff;
}

.rank-col-rank { color: #ff00ff; }
.rank-col-score { color: #ffff00; }
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  z-index: 40000; /* intro-overlay, guide-modal보다 높게 설정 */
  display: flex;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(5px);
  transition: opacity 0.3s ease;
}

.character-content, .ranking-content {
  background: var(--bg-card);
  padding: 40px;
  border-radius: 24px;
  width: 90%;
  max-width: 500px;
  border: 1px solid rgba(0, 229, 255, 0.3);
  box-shadow: 0 0 50px rgba(0, 229, 255, 0.2);
  text-align: center;
  position: relative;
}

.character-title, .ranking-title {
  font-family: "Space Grotesk", sans-serif;
  font-size: 2rem;
  margin-bottom: 30px;
  background: linear-gradient(to right, #fff, var(--primary-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.character-preview {
  height: 300px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 30px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 16px;
  position: relative;
  overflow: visible;
}

.character-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 30px;
  text-align: left;
}

.input-group label, .color-picker-group label {
  display: block;
  color: var(--text-dim);
  margin-bottom: 8px;
  font-size: 0.9rem;
  font-weight: 600;
}

.input-group input {
  width: 100%;
  padding: 15px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  color: #fff;
  font-size: 1.1rem;
  font-family: "Pretendard", sans-serif;
  outline: none;
  transition: all 0.3s ease;
}

.input-group input:focus {
  border-color: var(--primary-cyan);
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.2);
}

.color-options {
  display: flex;
  gap: 15px;
  justify-content: center;
}

.color-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.color-btn:hover {
  transform: scale(1.1);
}

.color-btn.active {
  border-color: #fff;
  box-shadow: 0 0 15px currentColor;
  transform: scale(1.2);
}

/* 랭킹 보드 스타일 */
.ranking-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 2rem;
  cursor: pointer;
  padding: 0 10px;
}

.close-btn:hover {
  color: #fff;
}

.ranking-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  background: rgba(255, 255, 255, 0.05);
  padding: 5px;
  border-radius: 12px;
}

.rank-tab {
  flex: 1;
  padding: 10px;
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.rank-tab.active {
  background: var(--primary-cyan);
  color: #000;
}

.ranking-list-header {
  display: grid;
  grid-template-columns: 0.8fr 2fr 1.2fr 1.5fr;
  padding: 10px 15px;
  color: var(--text-dim);
  font-size: 0.8rem;
  font-weight: 700;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.ranking-list {
  max-height: 300px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.rank-item {
  display: grid;
  grid-template-columns: 0.8fr 2fr 1.2fr 1.5fr;
  padding: 12px 15px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  align-items: center;
  font-size: 0.9rem;
}

.rank-item:nth-child(1) { color: #ffd700; font-weight: bold; background: rgba(255, 215, 0, 0.1); }
.rank-item:nth-child(2) { color: #c0c0c0; font-weight: bold; background: rgba(192, 192, 192, 0.1); }
.rank-item:nth-child(3) { color: #cd7f32; font-weight: bold; background: rgba(205, 127, 50, 0.1); }

.rank-col-score {
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
}

.rank-col-date {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.empty-rank {
  padding: 30px;
  color: var(--text-dim);
  font-style: italic;
}

/* 인트로 오버레이 */
.intro-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #05111f;
  z-index: 20000;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.5s ease;
}

.intro-content {
  text-align: center;
  color: white;
  z-index: 20001;
}

.intro-title {
  font-size: 4rem;
  font-weight: 900;
  letter-spacing: 5px;
  margin-bottom: 10px;
  background: linear-gradient(to right, #fff, #00e5ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: glitch-1 2s infinite;
}

.intro-subtitle {
  font-size: 1.5rem;
  letter-spacing: 10px;
  margin-bottom: 50px;
  color: #94a3b8;
}

.enter-btn {
  padding: 15px 40px;
  background: transparent;
  border: 2px solid var(--primary-cyan);
  color: var(--primary-cyan);
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.enter-btn:hover {
  background: var(--primary-cyan);
  color: #000;
  box-shadow: 0 0 30px var(--primary-cyan);
}