body {
  margin: 0;
  background: radial-gradient(ellipse at bottom, #0b0f1a 0%, #000000 100%);
  overflow-x: hidden;
  color: white;
}

/* 별 레이어 */
body::before {
  content: "";
  position: fixed;
  width: 200%;
  height: 200%;
  top: -50%;
  left: -50%;
  background-image: 
    radial-gradient(white 1px, transparent 1px),
    radial-gradient(white 1px, transparent 1px);
  background-size: 3px 3px, 6px 6px;
  opacity: 0.15;
  animation: starMove 120s linear infinite;
  z-index: -1;
}

@keyframes starMove {
  from { transform: translate(0,0); }
  to { transform: translate(200px, 200px); }
}

.container {
  width: 100%;
}

/* 이미지 스타일 */
img {
  width: 90%;
  max-width: 900px;
  display: block;
  margin: 120px auto;
  
  box-shadow: 0 0 40px rgba(255,255,255,0.08);
  transition: transform 0.6s ease, opacity 0.6s ease;
}

/* 호버 시 살짝 떠오름 */
img:hover {
  transform: scale(1.02);
}

.title {
  animation: glow 3s ease-in-out infinite;
}

@keyframes glow {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}
.contact {
  position: fixed;
  bottom: 40px;
  right: 40px;
  font-size: 12px;
  letter-spacing: 2px;
  opacity: 0.6;
}

.contact a {
  color: white;
  text-decoration: none;
}

.contact a:hover {
  opacity: 1;
}

.menu {
  position: fixed;
  top: 50%;
  left: 60px;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.circle {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  letter-spacing: 2px;
  text-decoration: none;
  color: white;
  transition: all 0.4s ease;
  backdrop-filter: blur(4px);
}

/* 🔥 핵심 효과 */
.circle:hover {
  background: white;
  color: black;
  transform: scale(1.2) rotate(8deg);
}
.circle:nth-child(1) {
  transform: translateY(-20px);
}
.circle:nth-child(2) {
  transform: translateY(20px);
}
.circle:nth-child(3) {
  transform: translateY(-10px);
}

.title {
  font-size: 20px;
  letter-spacing: 12px;
  mix-blend-mode: difference;
  opacity: 0.8;
}

.kyuii {
  position: fixed;
  top: 40px;
  left: 50%;
  transform: translateX(-50%); /* 🔥 중앙 정렬 핵심 */
  display: flex;
  gap: 15px;
}

.kyuii .circle {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  letter-spacing: 2px;
  color: white;
  transition: all 1s ease;
  backdrop-filter: blur(4px);
}

.float .circle:nth-child(1) {
  transform: translate(-60px, 40px);
}
.float .circle:nth-child(2) {
  transform: translate(40px, -50px);
}
.float .circle:nth-child(3) {
  transform: translate(80px, 60px);
}
.float .circle:nth-child(4) {
  transform: translate(-30px, -70px);
}
.float .circle:nth-child(5) {
  transform: translate(20px, 90px);
}

.float .circle {
  animation: float 6s infinite ease-in-out;
}

@keyframes float {
  0%   { transform: translate(0px, 0px); }
  50%  { transform: translate(20px, -30px); }
  100% { transform: translate(0px, 0px); }
}

 .menu {
  position: fixed;
  top: 50%;
  left: 60px;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.circle {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  letter-spacing: 2px;
  text-decoration: none;
  color: white;
  transition: all 0.4s ease;
  backdrop-filter: blur(4px);
}

/* 🔥 핵심 효과 */
.circle:hover {
  background: white;
  color: black;
  transform: scale(1.2) rotate(8deg);
}

/* KYUII floating */

.kyuii .circle {
  animation: float 8s infinite ease-in-out;
  opacity: 0.9;
}

/* 각각 다르게 움직이게 */
.kyuii .circle:nth-child(1) { animation-delay: 0s; }
.kyuii .circle:nth-child(2) { animation-delay: 1s; }
.kyuii .circle:nth-child(3) { animation-delay: 2s; }
.kyuii .circle:nth-child(4) { animation-delay: 3s; }
.kyuii .circle:nth-child(5) { animation-delay: 4s; }

/* 애니메이션 정의 */
@keyframes float {
  0%   { transform: translate(0px, 0px); }
  25%  { transform: translate(10px, -15px); }
  50%  { transform: translate(-8px, 10px); }
  75%  { transform: translate(6px, -8px); }
  100% { transform: translate(0px, 0px); }
}

/* 메뉴 원 떠다니기 */

.menu a {
  animation: floatMenu 10s infinite ease-in-out;
}

/* 각각 다르게 */
.menu-item:nth-child(1) a { animation-delay: 0s; }
.menu-item:nth-child(2) a { animation-delay: 2s; }
.menu-item:nth-child(3) a { animation-delay: 4s; }

/* 애니메이션 */
@keyframes floatMenu {
  0%   { transform: translate(0px, 0px); }
  25%  { transform: translate(6px, -8px); }
  50%  { transform: translate(-5px, 6px); }
  75%  { transform: translate(4px, -5px); }
  100% { transform: translate(0px, 0px); }
}

.page {
  display: none;
  padding-top: 120px;
}

.page.active {
  display: block;
}

#bio {
  position: fixed;
  bottom: 60px;        /* 아래에서 60px */
  left: 50%;
  transform: translateX(-50%);  /* 중앙 정렬 */

  text-align: center;
  color: white;
  font-size: 14px;
  line-height: 1.8;
}

#bio {
  animation: blink 3s infinite ease-in-out;
}

@keyframes blink {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

.footer {
  animation: fade 5s infinite ease-in-out;
}

@keyframes fade {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.6; }
}

#bio {
  display: flex;
  justify-content: center;
  align-items: center;

  min-height: 100vh;

  text-align: center;

  font-size: 13px;
  line-height: 1.8;
  letter-spacing: 1px;

  padding: 40px;
  box-sizing: border-box;
}

#bioTyping::after {
  content: "|";
  animation: blink 1s infinite;
}

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