/* ============================================
   dasoldout — 공통 스타일
   모든 페이지(index, stage-works, digital-scenography, about ...)에서 공유
   ============================================ */

/* ---------- 1. CSS 변수 (다크모드 확장 고려) ---------- */
:root {
  /* 컬러 팔레트 */
  --color-bg: #000000;
  --color-text: #FFFFFF;
  --color-accent: #B6CEB4;
  --color-secondary: #CBCBCB;
  --color-muted: rgba(255, 255, 255, 0.5);
  --color-line: rgba(255, 255, 255, 0.15);

  /* 타이포 */
  --font-body: 'Roboto Condensed', system-ui, -apple-system, sans-serif;
  --font-display: 'Roboto Condensed', system-ui, -apple-system, sans-serif;

  /* 사이즈 */
  --header-h: 72px;
  --maxw: 1440px;
  --pad-x: clamp(20px, 5vw, 80px);

  /* 모션 */
  --ease: cubic-bezier(.22, 1, .36, 1);
  --t-fast: .25s;
  --t-mid:  .6s;
  --t-slow: 1.2s;
}

/* ---------- 2. 리셋 / 베이스 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html { scroll-behavior: smooth; }

img, video { display: block; max-width: 100%; height: auto; }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}
a:hover { color: var(--color-accent); }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

::selection { background: var(--color-accent); color: #000; }

/* ---------- 3. 공통 헤더 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 99999;
  display: flex;
  flex-wrap: nowrap;
  white-space: nowrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad-x);
  background: rgba(0, 0, 0, 0.92);
  color: #fff;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-line);
}

.site-header .brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.02em;
  white-space: nowrap;
  flex-shrink: 0;
  text-transform: lowercase;
}

.site-nav ul {
  display: flex;
  flex-wrap: nowrap;
  white-space: nowrap;
  gap: clamp(14px, 2.4vw, 40px);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  position: relative;
  font-size: clamp(11px, 1.05vw, 14px);
  letter-spacing: 0.06em;
  white-space: nowrap;
  text-transform: uppercase;
  color: var(--color-secondary);
  padding: 6px 0;
}

.site-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--color-accent);
  transition: width var(--t-fast) var(--ease);
}

.site-nav a:hover { color: var(--color-text); }
.site-nav a:hover::after { width: 100%; }

.site-nav a.active {
  color: var(--color-accent);
}
.site-nav a.active::after { width: 100%; }

/* 모바일 네비게이션 */
.nav-toggle {
  display: none;
  width: 32px; height: 32px;
  position: relative;
}
.nav-toggle span {
  position: absolute;
  left: 4px; right: 4px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--t-fast) var(--ease);
}
.nav-toggle span:nth-child(1) { top: 12px; }
.nav-toggle span:nth-child(2) { bottom: 12px; }
.nav-toggle.is-open span:nth-child(1) { top: 16px; transform: rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { bottom: 15px; transform: rotate(-45deg); }

@media (max-width: 880px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute;
    top: var(--header-h); left: 0; right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all .35s var(--ease);
  }
  .site-nav.is-open { 
    opacity: 1;
    visibility: visible;
    transform: translateY(0); 
  }
  .site-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 12px var(--pad-x) 24px;
  }
  .site-nav a { display: block; padding: 14px 0; font-size: 16px; }
}

/* ---------- 4. 공통 푸터 ---------- */
.site-footer {
  padding: 80px var(--pad-x) 40px;
  border-top: 1px solid var(--color-line);
}

.site-footer .footer-mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(60px, 14vw, 200px);
  line-height: .9;
  letter-spacing: -0.02em;
  /* 🎯 [수정] 대문자 강제 설정을 해제하여 소문자도 표시되게 합니다 */
  text-transform: none; 
  text-align: center;
  color: var(--color-text);
  margin: 0 0 40px;
}
.site-footer .footer-mark::after {
  content: '.';
  color: var(--color-accent);
}
.site-footer .footer-meta {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--color-muted);
  letter-spacing: 0.04em;
  /* 🎯 [수정] 이메일 주소 등이 소문자로 정상 출력되도록 수정했습니다 */
  text-transform: none; 
}

.site-footer .footer-meta a:hover { color: var(--color-accent); }

/* ---------- 5. 공통 페이지 컨테이너 ---------- */
.page {
  padding-top: var(--header-h);
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

/* ---------- 6. 공통 애니메이션 유틸 ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--t-slow) var(--ease),
              transform var(--t-slow) var(--ease);
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 모션 줄이기 환경설정 존중 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}