/* ==========================================================
   base.css — 아덴지지 v2 디자인 시스템
   참조: haon.io (색감/무드), Binance (데이터 UI)
   ========================================================== */

/* ── CDN Fonts ─────────────────────────────────────────── */
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css');
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

/* ── CSS Custom Properties ─────────────────────────────── */
:root {
  /* 배경 계층 (haon.io 참조) */
  --bg-body:     #0a0d10;
  --bg-surface:  #111519;
  --bg-elevated: #171b22;
  --bg-hover:    #1c2127;
  --bg-active:   #252b33;

  /* 텍스트 계층 */
  --text-primary:   #EAECEF;
  --text-secondary: #B7BDC6;
  --text-tertiary:  #848E9C;
  --text-muted:     #6E7888;

  /* 시멘틱 — 바이낸스 스타일 */
  --color-up:         #0ECB81;
  --color-up-bg:      rgba(14,203,129,0.1);
  --color-up-bg-20:   rgba(14,203,129,0.2);
  --color-down:       #F6465D;
  --color-down-bg:    rgba(246,70,93,0.1);
  --color-down-bg-20: rgba(246,70,93,0.2);
  --color-accent:       #F0B90B;
  --color-accent-hover: #FFD54F;
  --color-accent-bg:    rgba(240,185,11,0.1);

  /* 구분선 — 배경과 분리된 블루-그레이 톤 */
  --border-primary:   #2a3040;
  --border-secondary: #1f2530;

  /* 거래소별 색상 */
  --color-barotem:    #4FC3F7;
  --color-itemmania:  #AED581;
  --color-itembay:    #FFB74D;

  /* 타이포그래피 — 폰트 스택 */
  --font-ui:    'Pretendard Variable', 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:  'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  --font-en:    'Inter', var(--font-ui);

  /* 폰트 크기 */
  --font-xs:  11px;
  --font-sm:  12px;
  --font-md:  13px;
  --font-lg:  14px;
  --font-xl:  20px;
  --font-2xl: 28px;

  /* 간격 */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  12px;
  --space-lg:  16px;
  --space-xl:  20px;
  --space-2xl: 24px;
  --space-3xl: 32px;

  /* 트랜지션 */
  --transition-fast:   150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow:   400ms ease;

  /* 레이아웃 */
  --max-width:        1400px;
  --gnb-height:       70px;
  --ticker-height:    32px;
  --sidebar-youtube:  180px;
  --sidebar-servers:  320px;
  --header-height:    36px;

  /* z-index 계층 */
  --z-dropdown:  100;
  --z-sticky:    200;
  --z-overlay:   500;
  --z-modal:     600;
  --z-gnb:       1000;
  --z-toast:     1100;
}

/* ── CSS Reset ─────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  background: #0a0d10;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scrollbar-gutter: stable;
}

body {
  font-family: var(--font-ui);
  font-size: var(--font-md);
  color: var(--text-primary);
  background: var(--bg-body);
  line-height: 1.5;
  min-height: 100vh;
}

/* 600px 이상: PC 모드 유지 — 가로 스크롤 허용 */
@media (min-width: 601px) {
  body { min-width: 1200px; }
}
/* 600px 미만: 모바일 — min-width 해제 + 가로 스크롤 차단 */
@media (max-width: 600px) {
  html {
    overflow-x: hidden;
  }
  body {
    min-width: 0 !important;
    max-width: 100vw;
    overflow-x: hidden;
  }
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
  outline: none;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  outline: none;
}

select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none' stroke='%23888' stroke-width='1.5'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  background-size: 16px;
  padding-right: 30px;
  cursor: pointer;
}

ul, ol {
  list-style: none;
}

img {
  display: block;
  max-width: 100%;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* 스크롤바 — 다크 테마 */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-body);
}
::-webkit-scrollbar-thumb {
  background: var(--border-primary);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* 사이드바 스크롤바 auto-hide */
.yt-live-list::-webkit-scrollbar-thumb,
.server-list-body::-webkit-scrollbar-thumb {
  background: transparent;
  transition: background 0.2s ease;
}
.yt-live-list:hover::-webkit-scrollbar-thumb,
.server-list-body:hover::-webkit-scrollbar-thumb {
  background: var(--border-primary);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--border-primary) var(--bg-body);
}

/* Tabular nums — 금융 데이터 숫자 정렬 */
.server-row .col-price,
.server-row .col-change,
.server-row .col-volume,
.ob-col-price,
.ob-col-qty,
.trade-table td {
  font-variant-numeric: tabular-nums;
}

/* 포커스 링 — 키보드 접근성 */
:focus-visible {
  outline: 1px solid var(--color-accent);
  outline-offset: -1px;
}

/* ── 유틸리티 클래스 ───────────────────────────────────── */

/* 텍스트 색상 */
.text-up      { color: var(--color-up) !important; }
.text-down    { color: var(--color-down) !important; }
.text-accent  { color: var(--color-accent) !important; }
.text-primary { color: var(--text-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-tertiary  { color: var(--text-tertiary) !important; }
.text-muted     { color: var(--text-muted) !important; }

/* 배경 */
.bg-up   { background: var(--color-up-bg) !important; }
.bg-down { background: var(--color-down-bg) !important; }

/* 폰트 */
.font-mono  { font-family: var(--font-mono) !important; }
.font-price {
  font-family: var(--font-mono) !important;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.font-en { font-family: var(--font-en) !important; }

/* 텍스트 유틸 */
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 레이아웃 유틸 */
.flex        { display: flex; }
.flex-center { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-1      { flex: 1; }
.gap-xs      { gap: var(--space-xs); }
.gap-sm      { gap: var(--space-sm); }
.gap-md      { gap: var(--space-md); }
.gap-lg      { gap: var(--space-lg); }

/* 유튜브 반응형 래퍼 (16:9 자동 비율) */
.edm-responsive-video {
  width: 100% !important;
  aspect-ratio: 16/9 !important;
  height: auto !important;
  margin: 20px 0;
  border-radius: 8px;
  overflow: hidden;
  display: block !important;
}

.edm-responsive-video iframe,
.edm-responsive-video video,
.edm-responsive-video span {
  display: block !important;
  width: 100% !important;
  height: 100% !important;
  border: none;
  margin: 0 !important;
  padding: 0 !important;
}

/* 숨김 */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* 반응형 유틸 */
.hide-mobile  { display: block; }
.show-mobile  { display: none; }

/* ── 반응형: 600px 미만만 모바일 ─────────────────────────── */
@media (max-width: 600px) {
  .hide-mobile  { display: none !important; }
  .show-mobile  { display: block !important; }

  :root {
    --sidebar-youtube: 0px;
    --sidebar-servers: 0px;
    --gnb-height: 48px;
  }

  /* 터치 UX */
  * { -webkit-tap-highlight-color: transparent; }
  button, .csel-option { min-height: 36px; }
  .section-tab { min-height: 100%; }
}