/* css/intro.css - extracted from index.html */
/* ═══════════════════════════════ INTRO OVERLAY ═══════════════════════════════ */
#intro-overlay {
  position: fixed; inset: 0; z-index: 99999;
  background: linear-gradient(160deg, #0a1628 0%, #0d2545 40%, #0a3d52 70%, #0e5e6f 100%);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  overflow: hidden; cursor: default;
}
#intro-overlay.fade-out {
  animation: introFadeOut 0.8s ease forwards;
}
@keyframes introFadeOut {
  to { opacity: 0; pointer-events: none; }
}

/* 배경 물결 SVG */
#intro-waves {
  position: absolute; bottom: 0; left: 0; width: 100%; pointer-events: none;
}
/* 배경 파티클 */
.intro-particle {
  position: absolute; border-radius: 50%;
  background: rgba(255,255,255,0.06);
  animation: floatUp linear infinite;
}
@keyframes floatUp {
  0%   { transform: translateY(0) scale(1); opacity: 0.5; }
  100% { transform: translateY(-100vh) scale(0.4); opacity: 0; }
}

/* 콘텐츠 박스 */
#intro-content {
  display: flex; flex-direction: column; align-items: center; gap: 0;
  animation: introSlideUp 1s cubic-bezier(.22,1,.36,1) forwards;
  opacity: 0;
}
@keyframes introSlideUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* 기관 로고 영역 */
.intro-agency {
  display: flex; align-items: center; gap: 12px; margin-bottom: 36px;
}
.intro-agency-emblem {
  width: 52px; height: 52px; border-radius: 50%;
  background: linear-gradient(135deg, #1a6eb5, #0d9488);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; box-shadow: 0 4px 20px rgba(13,148,136,0.4);
}
.intro-agency-name {
  display: flex; flex-direction: column;
  font-family: 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
}
.intro-agency-name .en { font-size: 11px; letter-spacing: 2px; color: #7dd3c8; font-weight: 400; margin-bottom: 2px; }
.intro-agency-name .ko { font-size: 15px; font-weight: 700; color: #e2f0ef; letter-spacing: 1px; }

/* 구분선 */
.intro-divider {
  width: 1px; height: 100px; background: linear-gradient(to bottom, transparent, rgba(125,211,200,0.5), transparent);
  margin: 0 auto 40px;
  animation: introSlideUp 1.2s cubic-bezier(.22,1,.36,1) forwards;
  opacity: 0; animation-delay: 0.2s;
}

/* 캐치프레이즈 */
.intro-catch {
  font-family: 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
  font-size: clamp(44px, 7vw, 80px);
  font-weight: 900;
  color: #fff;
  letter-spacing: -1px;
  line-height: 1.1;
  text-align: center;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff 0%, #a5f3ef 60%, #7dd3c8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: introSlideUp 1.1s cubic-bezier(.22,1,.36,1) forwards;
  opacity: 0; animation-delay: 0.15s;
}
.intro-sub {
  font-size: clamp(14px, 2vw, 18px);
  color: rgba(200,235,233,0.8);
  letter-spacing: 3px;
  text-align: center;
  margin-bottom: 8px;
  font-weight: 400;
  animation: introSlideUp 1.1s cubic-bezier(.22,1,.36,1) forwards;
  opacity: 0; animation-delay: 0.25s;
}
.intro-desc {
  font-size: 13px;
  color: rgba(160,200,198,0.65);
  letter-spacing: 1px;
  text-align: center;
  margin-bottom: 56px;
  animation: introSlideUp 1.1s cubic-bezier(.22,1,.36,1) forwards;
  opacity: 0; animation-delay: 0.35s;
}

/* 입장 버튼 */
.intro-enter-btn {
  position: relative; overflow: hidden;
  padding: 16px 56px;
  font-size: 16px; font-weight: 700; letter-spacing: 2px;
  color: #0a1628;
  background: linear-gradient(135deg, #7dd3c8, #0d9488);
  border: none; border-radius: 50px; cursor: pointer;
  box-shadow: 0 8px 32px rgba(13,148,136,0.45), 0 2px 8px rgba(0,0,0,0.3);
  transition: transform 0.2s, box-shadow 0.2s;
}
.intro-enter-btn::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.25), transparent);
  opacity: 0; transition: opacity 0.2s;
}
.intro-enter-btn:hover { transform: translateY(-3px); box-shadow: 0 14px 40px rgba(13,148,136,0.6); }
.intro-enter-btn:hover::before { opacity: 1; }
.intro-enter-btn:active { transform: translateY(0); }

/* 하단 태그 */
.intro-tags {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 28px; align-items: center;
  font-size: 15px; font-weight: 600;
  color: rgba(125,211,200,0.75); letter-spacing: 1px;
  white-space: nowrap;
  animation: introSlideUp 1.4s cubic-bezier(.22,1,.36,1) forwards;
  opacity: 0; animation-delay: 0.7s;
}
.intro-tags span::before { content: '· '; color: rgba(125,211,200,0.4); }
.intro-tags span:first-child::before { content: ''; }

/* 우측 하단 버전 */
.intro-ver {
  position: absolute; bottom: 32px; right: 32px;
  font-size: 10px; color: rgba(125,211,200,0.3); letter-spacing: 1px;
}

/* 입장버튼 + 레비 가로 배치 */
.intro-btn-revi {
  display: flex; align-items: center; gap: 24px;
  animation: introSlideUp 1.1s cubic-bezier(.22,1,.36,1) forwards;
  opacity: 0; animation-delay: 0.5s;
}
#intro-revi-img {
  width: clamp(90px, 10vw, 130px);
  filter: drop-shadow(0 8px 20px rgba(10,40,100,0.5));
  display: block;
}