/* ============================================================
   CryptoTax.cloud — 공통 CSS
   다크 테마 기본 / 라이트 테마 [data-theme="light"]
============================================================ */

/* ── DARK THEME (기본) ── */
:root {
  /* 기본 배경 */
  --bg:#0a0a0a;--bg2:#111;--bg3:#1a1a1a;
  --card:#1a1a1a;--card2:#222;
  /* 별칭 (다양한 네이밍 통합) */
  --bg-primary:#0a0a0a;--bg-dark:#0a0a0a;
  --bg-surface:#111;--bg-elevated:#1a1a1a;--bg-input:#1e1e1e;
  --bg-card:#1a1a1a;--bg-card2:#222;
  /* 텍스트 */
  --text:#f0f0f0;--text2:#aaa;--text3:#666;
  --text-sub:#aaa;--text-primary:#f0f0f0;--text-secondary:#aaa;--text-muted:#666;
  --muted:#666;
  /* 색상 */
  --orange:#f7971e;--orange2:#f97316;
  --accent:#f7971e;--accent2:#e8850f;
  --point:#f7971e;--point2:#e8850f;
  --primary:#f7971e;--primary-dark:#e8850f;
  --green:#22c55e;--red:#ef4444;--blue:#3b82f6;
  /* 테두리/그림자 */
  --border:#2a2a2a;--border2:#333;--border-subtle:#222;
  --radius:12px;--shadow:0 4px 24px rgba(0,0,0,.5);
  font-family:'Apple SD Gothic Neo','Noto Sans KR',sans-serif
}

/* ── LIGHT THEME ── */
[data-theme="light"] {
  --bg:#f8f9fa;--bg2:#fff;--bg3:#f1f3f5;
  --card:#fff;--card2:#f1f3f5;
  --bg-primary:#f8f9fa;--bg-dark:#fff;
  --bg-surface:#fff;--bg-elevated:#f1f3f5;--bg-input:#f4f4f4;
  --bg-card:#fff;--bg-card2:#f1f3f5;
  --text:#111;--text2:#444;--text3:#666;
  --text-sub:#555;--text-primary:#111;--text-secondary:#444;--text-muted:#888;
  --muted:#888;
  --accent:#f7971e;--accent2:#e8850f;
  --point:#f7971e;--point2:#e8850f;
  --primary:#f7971e;--primary-dark:#e8850f;
  --border:#e0e0e0;--border2:#d0d0d0;--border-subtle:#eee;
  --shadow:0 4px 24px rgba(0,0,0,.08)
}

/* 라이트 모드 — body / 공통 요소 강제 오버라이드 */
[data-theme="light"] body{background:#f8f9fa;color:#111}
[data-theme="light"] input,
[data-theme="light"] select,
[data-theme="light"] textarea{background:#fff!important;color:#111!important;border-color:#d0d0d0!important}
[data-theme="light"] .card,
[data-theme="light"] .card-box,
[data-theme="light"] .calc-card,
[data-theme="light"] .section,
[data-theme="light"] .result-box,
[data-theme="light"] .info-card{background:#fff!important;border-color:#e0e0e0!important}
[data-theme="light"] table th{background:rgba(247,151,30,.1)!important;color:#111!important}
[data-theme="light"] table td{color:#333!important;border-color:#e0e0e0!important}
[data-theme="light"] table tr:nth-child(even) td{background:rgba(0,0,0,.025)!important}
[data-theme="light"] nav,
[data-theme="light"] .main-nav,
[data-theme="light"] .nav-wrap{background:rgba(248,249,250,.97)!important;border-color:#e0e0e0!important}
[data-theme="light"] .hero,
[data-theme="light"] .hero-wrap{background:#fff!important;border-color:#e0e0e0!important}
[data-theme="light"] footer{background:#f1f3f5!important;border-color:#e0e0e0!important;color:#333!important}
[data-theme="light"] pre,
[data-theme="light"] code{background:#f1f3f5!important;color:#333!important}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
a{color:var(--orange);text-decoration:none}
a:hover{text-decoration:underline}

/* ── GRID SYSTEM ── */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}

@media(max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .grid-2,.grid-3,.tools-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .grid-2,.grid-3,.grid-4,.tools-grid{grid-template-columns:1fr}
}

/* ── CARDS ── */
.card{background:var(--card);border:1px solid var(--border);
  border-radius:12px;padding:24px;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-3px);box-shadow:0 8px 32px rgba(0,0,0,.4)}

/* ── BLOG CARDS ── */
.blog-card{background:var(--card);border:1px solid var(--border);
  border-radius:16px;overflow:hidden;transition:transform .2s;
  text-decoration:none;display:block;color:inherit}
.blog-card:hover{transform:translateY(-4px)}
.blog-card-thumb{height:120px;display:flex;align-items:center;
  justify-content:center;font-size:44px}
.blog-card-body{padding:18px}
.blog-card-tag{font-size:11px;font-weight:700;text-transform:uppercase}
.blog-card-title{font-size:15px;margin:8px 0;line-height:1.5;color:var(--text)}
.blog-card-desc{font-size:13px;color:var(--text-sub);line-height:1.6}

/* ── BADGE ── */
.badge{display:inline-block;padding:4px 14px;border-radius:20px;
  font-size:12px;font-weight:700;background:var(--orange);color:#fff}

/* ── BUTTONS ── */
.btn{display:inline-block;padding:13px 28px;border-radius:10px;
  font-size:15px;font-weight:700;cursor:pointer;border:none;
  transition:opacity .2s,transform .2s;text-decoration:none}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{opacity:.88;transform:translateY(-2px)}
.btn-full{width:100%;text-align:center;display:block}

/* ── SECTION HEADERS ── */
.section-header{text-align:center;margin-bottom:36px}
.section-header h2{font-size:22px;color:var(--text);margin-top:12px}
.section-header p{color:var(--text-sub);font-size:14px;margin-top:8px}

/* ── STAT BOXES ── */
.stat-box{background:var(--card);border:1px solid var(--border);
  border-radius:12px;padding:20px 16px;text-align:center}
.stat-num{font-size:28px;font-weight:800;color:var(--orange);display:block}
.stat-label{font-size:12px;color:var(--text-sub);margin-top:4px;display:block}

/* ── SCROLL ANIMATION ── */
.fade-up{opacity:0;transform:translateY(24px);
  transition:opacity .6s ease,transform .6s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* ── SUMMARY BOX (AEO) ── */
.summary-box{background:rgba(247,151,30,.08);border-left:4px solid var(--orange);
  border-radius:0 12px 12px 0;padding:20px 24px;margin:24px 0}

/* ── TABLE OF CONTENTS ── */
.toc{background:var(--card);border:1px solid var(--border);
  border-radius:12px;padding:20px 24px;margin:24px 0}
.toc a{color:var(--orange);text-decoration:none}

/* ── CALC CTA ── */
.calc-cta{background:linear-gradient(135deg,rgba(247,151,30,.15),rgba(247,151,30,.05));
  border:1px solid rgba(247,151,30,.3);border-radius:16px;
  padding:24px;margin:32px 0;text-align:center}

/* ── EXTERNAL LINKS ── */
.ext-link-card{background:var(--card);border:1px solid var(--border);
  border-radius:12px;padding:20px;text-align:center;text-decoration:none;
  display:block;transition:transform .2s}
.ext-link-card:hover{transform:translateY(-3px)}

/* ── ADSENSE PLACEHOLDER ── */
.adsense-wrap{text-align:center;margin:28px 0;min-height:90px;
  background:var(--card);border-radius:8px;border:1px dashed var(--border);
  display:flex;align-items:center;justify-content:center;
  color:var(--muted);font-size:12px}

/* ── STICKY BOTTOM NAV ── */
#sticky-calc-nav{position:fixed;bottom:-80px;left:0;right:0;z-index:999;
  background:rgba(10,10,10,.96);backdrop-filter:blur(12px);
  border-top:1px solid var(--border);padding:10px 20px;
  display:flex;align-items:center;justify-content:center;
  gap:8px;flex-wrap:wrap;transition:bottom .4s ease}
.sticky-link{display:flex;align-items:center;gap:5px;padding:6px 12px;
  background:var(--card);border:1px solid var(--border);border-radius:20px;
  font-size:12px;color:var(--text);text-decoration:none;white-space:nowrap}
.sticky-link:hover{border-color:var(--orange);color:var(--orange)}
[data-theme="light"] #sticky-calc-nav{background:rgba(255,255,255,.96)}
[data-theme="light"] .sticky-link{background:#f1f3f5}

/* ── NAV ── */
.main-nav{position:sticky;top:0;z-index:100;
  background:rgba(10,10,10,.94);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  padding:0 24px;display:flex;align-items:center;
  justify-content:space-between;height:58px}
[data-theme="light"] .main-nav{background:rgba(255,255,255,.94)}
.nav-logo{font-weight:800;font-size:18px;color:var(--orange);text-decoration:none}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-item{padding:6px 14px;border-radius:8px;font-size:14px;
  color:var(--text-sub);text-decoration:none;font-weight:500;
  transition:color .2s,background .2s}
.nav-item:hover,.nav-item.active{color:var(--orange);background:rgba(247,151,30,.1)}
.nav-right{display:flex;align-items:center;gap:10px}
.theme-btn{background:var(--card);border:1px solid var(--border);
  border-radius:50px;padding:5px 14px;cursor:pointer;
  font-size:13px;color:var(--text)}
@media(max-width:768px){
  .nav-menu{display:none}
  .main-nav{padding:0 16px}
}

/* ── FOOTER ── */
.main-footer{background:var(--bg2);border-top:1px solid var(--border);
  padding:40px 20px 24px;text-align:center}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;
  gap:6px 16px;margin-bottom:20px}
.footer-link{font-size:13px;color:var(--muted);text-decoration:none}
.footer-link:hover{color:var(--orange)}
.footer-copy{font-size:12px;color:var(--muted);margin-top:12px}

/* ── ARTICLE TYPOGRAPHY ── */
article h2{font-size:20px;margin:40px 0 16px;color:var(--text)}
article p{color:var(--text-sub);line-height:1.9;margin-bottom:16px}
article ul,article ol{padding-left:20px;color:var(--text-sub);line-height:2}
article table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}
article th{background:rgba(247,151,30,.15);color:var(--text);padding:10px 14px;
  border:1px solid var(--border);font-weight:700;text-align:left}
article td{padding:10px 14px;border:1px solid var(--border);color:var(--text-sub)}
article tr:nth-child(even) td{background:rgba(255,255,255,.03)}
details{background:var(--card);border:1px solid var(--border);
  border-radius:10px;padding:16px 20px;margin-bottom:12px}
summary{font-weight:700;cursor:pointer;color:var(--text);font-size:15px;list-style:none}
summary::before{content:'▶ ';color:var(--orange);font-size:12px}
details[open] summary::before{content:'▼ '}
details p{margin-top:12px;font-size:14px;line-height:1.8}

/* ── BREADCRUMB ── */
.breadcrumb{font-size:12px;color:var(--muted);margin-bottom:20px}
.breadcrumb a{color:var(--muted);text-decoration:none}
.breadcrumb a:hover{color:var(--orange)}
.breadcrumb span{margin:0 6px}

/* ══════════════════════════════════════════════════════
   COIN TICKER — 우→좌 스크롤 마퀴
══════════════════════════════════════════════════════ */
#ctc-ticker{width:100%;overflow:hidden;background:var(--bg2);
  border-bottom:1px solid var(--border);height:38px;
  display:flex;align-items:center;position:relative;z-index:99}
#ctc-ticker::before,#ctc-ticker::after{content:'';position:absolute;top:0;
  width:48px;height:100%;z-index:2;pointer-events:none}
#ctc-ticker::before{left:0;background:linear-gradient(to right,var(--bg2),transparent)}
#ctc-ticker::after{right:0;background:linear-gradient(to left,var(--bg2),transparent)}
.ticker-track{display:flex;gap:0;white-space:nowrap;
  animation:tickerScroll 60s linear infinite;will-change:transform}
.ticker-track:hover{animation-play-state:paused}
@keyframes tickerScroll{
  0%{transform:translateX(0)}
  100%{transform:translateX(-50%)}
}
.ticker-item{display:inline-flex;align-items:center;gap:7px;
  padding:0 22px;font-size:12px;color:var(--text2);
  border-right:1px solid var(--border);height:38px;
  cursor:default;transition:background .15s}
.ticker-item:hover{background:rgba(247,151,30,.07)}
.ticker-icon{font-size:14px;line-height:1}
.ticker-sym{font-weight:700;color:var(--text);font-size:12px}
.ticker-name{color:var(--text2);font-size:11px}
.ticker-ex{display:flex;gap:2px}
.ex-badge{display:inline-flex;align-items:center;justify-content:center;
  width:14px;height:14px;border-radius:3px;font-size:9px;font-weight:800;line-height:1}
.ex-upbit{background:#005cf5;color:#fff}
.ex-bithumb{background:#f7641e;color:#fff}
[data-theme="light"] #ctc-ticker{background:#f1f3f5}
[data-theme="light"] #ctc-ticker::before{background:linear-gradient(to right,#f1f3f5,transparent)}
[data-theme="light"] #ctc-ticker::after{background:linear-gradient(to left,#f1f3f5,transparent)}

/* ══════════════════════════════════════════════════════
   SCROLL ANIMATIONS — modujuso 스타일 자동 리빌
══════════════════════════════════════════════════════ */
/* ── 자동 리빌 (JS가 .ctc-r 클래스 자동 부여) ──────── */
.ctc-r{
  opacity:0;
  transform:translateY(22px);
  transition:opacity .62s cubic-bezier(.22,1,.36,1),
             transform .62s cubic-bezier(.22,1,.36,1);
  will-change:opacity,transform;
}
.ctc-r.ctc-v{opacity:1;transform:none;}

/* ── 기존 명시적 클래스 (하위 호환) ─────────────────── */
.fade-up{opacity:0;transform:translateY(28px);
  transition:opacity .62s cubic-bezier(.22,1,.36,1),
             transform .62s cubic-bezier(.22,1,.36,1)}
.fade-left{opacity:0;transform:translateX(-28px);
  transition:opacity .62s cubic-bezier(.22,1,.36,1),
             transform .62s cubic-bezier(.22,1,.36,1)}
.fade-right{opacity:0;transform:translateX(28px);
  transition:opacity .62s cubic-bezier(.22,1,.36,1),
             transform .62s cubic-bezier(.22,1,.36,1)}
.fade-in{opacity:0;
  transition:opacity .7s cubic-bezier(.22,1,.36,1)}
.zoom-in{opacity:0;transform:scale(.95);
  transition:opacity .6s cubic-bezier(.22,1,.36,1),
             transform .6s cubic-bezier(.22,1,.36,1)}
.fade-up.visible,.fade-left.visible,.fade-right.visible,
.fade-in.visible,.zoom-in.visible{opacity:1;transform:none}

/* ── 딜레이 유틸리티 ─────────────────────────────────── */
.delay-1{transition-delay:.07s}
.delay-2{transition-delay:.14s}
.delay-3{transition-delay:.21s}
.delay-4{transition-delay:.28s}
.delay-5{transition-delay:.35s}
/* 접근성: 모션 감소 설정 */
@media(prefers-reduced-motion:reduce){
  .ctc-r,.fade-up,.fade-left,.fade-right,.fade-in,.zoom-in{
    transition:none!important;opacity:1!important;transform:none!important}
}
/* 헤더/히어로 섹션 로딩 애니메이션 */
.hero-anim-1{animation:heroFadeUp .7s cubic-bezier(.22,1,.36,1) .05s both}
.hero-anim-2{animation:heroFadeUp .7s cubic-bezier(.22,1,.36,1) .15s both}
.hero-anim-3{animation:heroFadeUp .7s cubic-bezier(.22,1,.36,1) .28s both}
.hero-anim-4{animation:heroFadeUp .7s cubic-bezier(.22,1,.36,1) .42s both}
@keyframes heroFadeUp{
  from{opacity:0;transform:translateY(24px)}
  to{opacity:1;transform:translateY(0)}
}
/* 카드 hover — 토스 스타일 미세 리프트 */
.card,.calc-card,.blog-card{
  transition:transform .28s cubic-bezier(.22,1,.36,1),
             box-shadow .28s cubic-bezier(.22,1,.36,1),
             border-color .2s}
.card:hover,.calc-card:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 40px rgba(0,0,0,.35)}
[data-theme="light"] .card:hover,[data-theme="light"] .calc-card:hover{
  box-shadow:0 12px 40px rgba(0,0,0,.1)}

/* ══════════════════════════════════════════════════════
   COIN SEARCH MODAL
══════════════════════════════════════════════════════ */
.coin-search-trigger{display:flex;align-items:center;gap:10px;
  background:var(--bg-elevated,var(--card));border:1.5px solid var(--border);
  border-radius:12px;padding:11px 16px;cursor:pointer;
  font-size:14px;color:var(--text);transition:border-color .2s,box-shadow .2s;
  width:100%}
.coin-search-trigger:hover{border-color:var(--orange)}
.coin-search-trigger:focus{outline:none;border-color:var(--orange);
  box-shadow:0 0 0 3px rgba(247,151,30,.15)}
.coin-search-selected{display:flex;align-items:center;gap:8px;flex:1}
.coin-search-arrow{color:var(--muted);font-size:12px;margin-left:auto}
.coin-modal-overlay{display:none;position:fixed;inset:0;z-index:9000;
  background:rgba(0,0,0,.65);backdrop-filter:blur(4px);
  align-items:flex-start;justify-content:center;padding-top:80px}
.coin-modal-overlay.open{display:flex}
.coin-modal{background:var(--card);border:1px solid var(--border);
  border-radius:20px;width:min(520px,95vw);max-height:70vh;
  display:flex;flex-direction:column;box-shadow:0 24px 80px rgba(0,0,0,.6);
  animation:modalIn .25s cubic-bezier(.22,1,.36,1)}
@keyframes modalIn{
  from{opacity:0;transform:translateY(-12px) scale(.97)}
  to{opacity:1;transform:none}
}
.coin-modal-head{padding:16px 20px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;gap:10px}
.coin-modal-search{flex:1;background:var(--bg-elevated,var(--bg2));
  border:1.5px solid var(--border);border-radius:10px;
  padding:10px 14px;color:var(--text);font-size:15px;outline:none;
  transition:border-color .2s}
.coin-modal-search:focus{border-color:var(--orange)}
.coin-modal-close{background:none;border:none;color:var(--muted);
  font-size:20px;cursor:pointer;padding:4px 8px;border-radius:8px;
  transition:background .15s,color .15s}
.coin-modal-close:hover{background:var(--border);color:var(--text)}
.coin-modal-cats{display:flex;gap:6px;padding:10px 20px;
  overflow-x:auto;border-bottom:1px solid var(--border);scrollbar-width:none}
.coin-modal-cats::-webkit-scrollbar{display:none}
.cat-btn{background:var(--bg-elevated,var(--bg2));border:1px solid var(--border);
  border-radius:20px;padding:4px 12px;font-size:12px;color:var(--text2);
  cursor:pointer;white-space:nowrap;transition:all .15s;font-family:inherit}
.cat-btn:hover,.cat-btn.active{background:var(--orange);border-color:var(--orange);
  color:#fff;font-weight:700}
.coin-modal-list{overflow-y:auto;flex:1;padding:8px 0}
.coin-modal-list::-webkit-scrollbar{width:4px}
.coin-modal-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
.coin-modal-item{display:flex;align-items:center;gap:12px;
  padding:11px 20px;cursor:pointer;transition:background .12s}
.coin-modal-item:hover{background:var(--bg-elevated,var(--bg2))}
.coin-modal-item.selected{background:rgba(247,151,30,.1)}
.cmi-icon{width:36px;height:36px;border-radius:10px;
  background:var(--bg-elevated,var(--bg2));border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:800;color:var(--text);flex-shrink:0}
.cmi-info{flex:1;min-width:0}
.cmi-name{font-size:14px;font-weight:700;color:var(--text)}
.cmi-sub{font-size:12px;color:var(--text2);margin-top:1px}
.cmi-right{display:flex;flex-direction:column;align-items:flex-end;gap:3px}
.cmi-apy{font-size:12px;font-weight:700;color:var(--orange)}
.coin-modal-empty{text-align:center;padding:40px 20px;
  color:var(--muted);font-size:14px}
[data-theme="light"] .coin-modal{background:#fff}
[data-theme="light"] .coin-modal-search{background:#f1f3f5}
[data-theme="light"] .coin-modal-item:hover{background:#f8f9fa}
@media(max-width:480px){
  .coin-modal-overlay{padding-top:16px;align-items:flex-end}
  .coin-modal{border-radius:20px 20px 0 0;max-height:85vh;width:100%}
}

/* ══════════════════════════════════════════════════════
   ARTICLE FEATURED IMAGE — 블로그 대표 이미지
══════════════════════════════════════════════════════ */
.article-featured-img{
  margin:0 0 36px;
  border-radius:16px;
  overflow:hidden;
  background:var(--bg2);
  box-shadow:0 8px 40px rgba(0,0,0,.3)
}
.article-featured-img img{
  width:100%;height:auto;
  display:block;
  aspect-ratio:820/430;
  object-fit:cover;
  transition:transform .5s cubic-bezier(.22,1,.36,1)
}
.article-featured-img:hover img{transform:scale(1.025)}
.article-featured-img figcaption{
  font-size:11px;color:var(--muted);
  text-align:center;padding:7px 14px;
  background:var(--bg2);border-top:1px solid var(--border);
  line-height:1.5
}
[data-theme="light"] .article-featured-img{box-shadow:0 8px 40px rgba(0,0,0,.08)}

/* ── 스크롤 여백 정리 ─────────────────────────────── */
section{margin-bottom:64px}
section:last-child{margin-bottom:0}
.container{padding-bottom:80px}
@media(max-width:768px){
  section{margin-bottom:44px}
  .container{padding-bottom:60px}
}