/* =============================================
   BTAS - Binance Trading Assistant System
   Dashboard Stylesheet v2.0
   UTF-8 Encoding
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600;700&family=Noto+Sans+KR:wght@400;500;700&display=swap');

/* =============================================
   CSS 변수 (테마 커스터마이징)
   ============================================= */
:root {
  /* 기본 다크 테마 */
  --bg-primary:     #0a0d14;
  --bg-secondary:   #0f1320;
  --bg-card:        #131928;
  --bg-card-hover:  #1a2235;
  --bg-input:       #0f1522;
  --border-color:   rgba(255,255,255,0.07);
  --border-accent:  rgba(243,186,47,0.3);

  /* 텍스트 */
  --text-primary:   #f0f2f5;
  --text-secondary: #848e9c;
  --text-muted:     #4d5a6b;
  --text-on-accent: #000;

  /* 포인트 컬러 (config.json UI_ACCENT_COLOR로 동적 변경 가능) */
  --accent:         #f3ba2f;
  --accent-dim:     rgba(243,186,47,0.15);
  --accent-glow:    rgba(243,186,47,0.25);

  /* 손익 컬러 */
  --profit:         #0ecb81;
  --profit-dim:     rgba(14,203,129,0.12);
  --loss:           #f6465d;
  --loss-dim:       rgba(246,70,93,0.12);
  --neutral:        #848e9c;

  /* 신호 컬러 */
  --signal-buy:     #0ecb81;
  --signal-sell:    #f6465d;
  --signal-hold:    #f3ba2f;

  /* 상태 컬러 */
  --status-active:  #0ecb81;
  --status-warn:    #f3ba2f;
  --status-error:   #f6465d;
  --status-offline: #4d5a6b;

  /* 레이아웃 */
  --nav-height:     60px;
  --sidebar-width:  260px;
  --card-radius:    14px;
  --card-radius-sm: 10px;
  --transition:     all 0.2s ease;
  --transition-slow: all 0.4s ease;

  /* 그림자 */
  --shadow-card:    0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow:    0 0 20px rgba(243,186,47,0.15);
  --shadow-profit:  0 0 12px rgba(14,203,129,0.2);
  --shadow-loss:    0 0 12px rgba(246,70,93,0.2);
}

/* 라이트 테마 */
[data-theme="light"] {
  --bg-primary:     #f0f2f5;
  --bg-secondary:   #e4e8ef;
  --bg-card:        #ffffff;
  --bg-card-hover:  #f8f9fc;
  --bg-input:       #f0f2f5;
  --border-color:   rgba(0,0,0,0.08);
  --border-accent:  rgba(243,186,47,0.4);
  --text-primary:   #1a1d27;
  --text-secondary: #6b7280;
  --text-muted:     #9ca3af;
  --shadow-card:    0 2px 12px rgba(0,0,0,0.08);
}

/* =============================================
   리셋 & 기본 스타일
   ============================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 14px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Noto Sans KR', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
  transition: background 0.3s ease, color 0.3s ease;
}

/* 스크롤바 커스텀 */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* 텍스트 선택 */
::selection { background: var(--accent); color: var(--text-on-accent); }

/* =============================================
   로딩 화면
   ============================================= */
#loading-screen {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  gap: 20px;
  transition: opacity 0.5s ease;
}

#loading-screen.fade-out {
  opacity: 0;
  pointer-events: none;
}

.loading-logo {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--accent);
  letter-spacing: -2px;
  text-shadow: var(--shadow-glow);
}

.loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* =============================================
   상단 내비게이션
   ============================================= */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--nav-height);
  background: rgba(10,13,20,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 16px;
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

[data-theme="light"] .top-nav {
  background: rgba(240,242,245,0.9);
}

.nav-logo {
  display: flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
  cursor: pointer;
  user-select: none;
}

.nav-logo-text {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--accent);
  letter-spacing: -1px;
  line-height: 1;
  text-shadow: var(--shadow-glow);
  transition: var(--transition);
}

.nav-logo:hover .nav-logo-text { opacity: 0.85; }

.nav-logo-sub {
  font-size: 0.55rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  display: none;
}

@media (min-width: 768px) { .nav-logo-sub { display: block; } }

.nav-divider {
  width: 1px;
  height: 24px;
  background: var(--border-color);
  flex-shrink: 0;
}

/* 연결 상태 배지 */
.conn-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 6px 12px;
  font-size: 0.72rem;
  font-weight: 600;
  transition: var(--transition);
}

.conn-badge:hover { border-color: var(--border-accent); }

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--status-offline);
  transition: var(--transition);
  flex-shrink: 0;
}

.status-dot.connected { background: var(--status-active); box-shadow: 0 0 6px var(--status-active); }
.status-dot.connecting { background: var(--status-warn); animation: pulse-dot 1s ease infinite; }
.status-dot.error { background: var(--status-error); }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* 내비게이션 탭 */
.nav-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 4px;
  flex: 1;
  overflow-x: auto;
}

.nav-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.nav-tab:hover {
  color: var(--text-primary);
  background: var(--bg-card);
}

.nav-tab.active {
  color: var(--accent);
  background: var(--accent-dim);
  border-color: var(--border-accent);
}

.nav-tab i { font-size: 0.8rem; }

/* 알림 배지 */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 9px;
  font-size: 0.65rem;
  font-weight: 700;
  background: var(--loss);
  color: #fff;
  line-height: 1;
}

/* 우측 상단 액션 버튼 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  flex-shrink: 0;
}

.icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.85rem;
}

.icon-btn:hover { color: var(--accent); border-color: var(--border-accent); background: var(--accent-dim); }

/* =============================================
   메인 레이아웃
   ============================================= */
.main-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: calc(100vh - var(--nav-height));
  transition: var(--transition-slow);
}

.main-layout.no-sidebar {
  grid-template-columns: 1fr;
}

/* 사이드바 */
.sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  position: sticky;
  top: var(--nav-height);
  height: calc(100vh - var(--nav-height));
}

/* 메인 콘텐츠 */
.main-content {
  padding: 20px;
  overflow-y: auto;
  max-width: 100%;
}

/* =============================================
   카드 컴포넌트
   ============================================= */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 16px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: transparent;
  transition: var(--transition);
}

.card:hover { border-color: rgba(255,255,255,0.12); box-shadow: var(--shadow-card); }
.card.accent-border::before { background: linear-gradient(90deg, var(--accent), transparent); }
.card.profit-border::before { background: linear-gradient(90deg, var(--profit), transparent); }
.card.loss-border::before { background: linear-gradient(90deg, var(--loss), transparent); }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.card-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title i { color: var(--accent); }

/* =============================================
   요약 스탯 카드
   ============================================= */
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 14px 16px;
  transition: var(--transition);
}

.stat-card:hover { border-color: var(--border-accent); box-shadow: var(--shadow-glow); }

.stat-label {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}

.stat-value {
  font-size: 1.4rem;
  font-weight: 800;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-value.profit { color: var(--profit); }
.stat-value.loss { color: var(--loss); }
.stat-value.accent { color: var(--accent); }

.stat-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-change {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 6px;
}

.stat-change.up { background: var(--profit-dim); color: var(--profit); }
.stat-change.down { background: var(--loss-dim); color: var(--loss); }

/* =============================================
   포지션 테이블
   ============================================= */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.data-table thead th {
  padding: 10px 12px;
  text-align: left;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.data-table thead th:first-child { border-radius: 8px 0 0 0; }
.data-table thead th:last-child { border-radius: 0 8px 0 0; }

.data-table tbody tr {
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.data-table tbody tr:hover { background: var(--bg-card-hover); }
.data-table tbody tr:last-child { border-bottom: none; }

.data-table tbody td {
  padding: 12px 12px;
  vertical-align: middle;
}

.mono { font-family: 'JetBrains Mono', monospace; }

/* 심볼 셀 */
.symbol-cell {
  display: flex;
  align-items: center;
  gap: 10px;
}

.symbol-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  font-weight: 800;
  color: var(--accent);
  flex-shrink: 0;
}

.symbol-name {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 0.85rem;
}

.symbol-sub {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-top: 1px;
}

/* 방향 배지 */
.side-badge {
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.side-badge.long { background: var(--profit-dim); color: var(--profit); border: 1px solid rgba(14,203,129,0.2); }
.side-badge.short { background: var(--loss-dim); color: var(--loss); border: 1px solid rgba(246,70,93,0.2); }

/* PnL 셀 */
.pnl-cell {
  display: flex;
  flex-direction: column;
}

.pnl-value {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 0.88rem;
}

.pnl-value.profit { color: var(--profit); }
.pnl-value.loss { color: var(--loss); }

.pnl-pct {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  width: fit-content;
  margin-top: 2px;
}

.pnl-pct.profit { background: var(--profit-dim); color: var(--profit); }
.pnl-pct.loss { background: var(--loss-dim); color: var(--loss); }

/* 레버리지 배지 */
.leverage-badge {
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--border-accent);
  border-radius: 6px;
  padding: 3px 7px;
  font-size: 0.68rem;
  font-weight: 800;
  font-family: 'JetBrains Mono', monospace;
}

/* 청산가 경고 */
.liq-price {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.liq-price.danger { color: var(--loss); font-weight: 700; }
.liq-price.warn   { color: var(--status-warn); font-weight: 700; }

/* =============================================
   현물 보유 카드 그리드
   ============================================= */
.spot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.spot-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius-sm);
  padding: 14px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.spot-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: transparent;
  transition: var(--transition);
}

.spot-card.profit::after { background: var(--profit); }
.spot-card.loss::after   { background: var(--loss); }

.spot-card:hover { border-color: rgba(255,255,255,0.12); box-shadow: var(--shadow-card); }

.spot-asset-name {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.spot-quantity {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.spot-value {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.spot-pnl {
  font-size: 0.75rem;
  font-weight: 700;
  margin-top: 8px;
  padding: 4px 8px;
  border-radius: 6px;
}

.spot-pnl.profit { background: var(--profit-dim); color: var(--profit); }
.spot-pnl.loss   { background: var(--loss-dim); color: var(--loss); }

/* =============================================
   신호 카드
   ============================================= */
.signal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
}

.signal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: var(--transition);
}

.signal-card:hover { box-shadow: var(--shadow-card); border-color: rgba(255,255,255,0.12); }

.signal-card-header {
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.signal-card-header.buy  { background: rgba(14,203,129,0.08); border-bottom: 1px solid rgba(14,203,129,0.15); }
.signal-card-header.sell { background: rgba(246,70,93,0.08);  border-bottom: 1px solid rgba(246,70,93,0.15); }

.signal-action {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 0.9rem;
}

.signal-action.buy  { color: var(--profit); }
.signal-action.sell { color: var(--loss); }

.signal-type-badge {
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
}

.signal-type-badge.futures { background: var(--accent-dim); color: var(--accent); }
.signal-type-badge.spot    { background: rgba(79,209,197,0.15); color: #4fd1c5; }

.signal-card-body {
  padding: 14px;
}

.signal-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.78rem;
}

.signal-row:last-child { border-bottom: none; }

.signal-row-label { color: var(--text-muted); }

.signal-row-value {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  color: var(--text-primary);
}

.signal-row-value.target { color: var(--profit); }
.signal-row-value.stoploss { color: var(--loss); }
.signal-row-value.rr { color: var(--accent); }

.signal-reasoning {
  margin: 10px 14px 0;
  padding: 10px;
  background: var(--bg-secondary);
  border-radius: 8px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.6;
  border-left: 3px solid var(--border-accent);
}

.signal-card-footer {
  padding: 12px 14px;
  display: flex;
  gap: 8px;
  border-top: 1px solid var(--border-color);
}

.signal-confidence {
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
}

.signal-confidence.HIGH   { background: rgba(14,203,129,0.15); color: var(--profit); }
.signal-confidence.MEDIUM { background: rgba(243,186,47,0.15); color: var(--accent); }
.signal-confidence.LOW    { background: rgba(132,142,156,0.15); color: var(--neutral); }

/* =============================================
   버튼
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent);
  color: var(--text-on-accent);
  border-color: var(--accent);
}

.btn-primary:hover { background: #e8ab25; box-shadow: 0 0 16px rgba(243,186,47,0.4); }

.btn-approve {
  background: var(--profit-dim);
  color: var(--profit);
  border-color: rgba(14,203,129,0.3);
  flex: 1;
}

.btn-approve:hover { background: var(--profit); color: #000; box-shadow: var(--shadow-profit); }

.btn-reject {
  background: var(--loss-dim);
  color: var(--loss);
  border-color: rgba(246,70,93,0.3);
  flex: 1;
}

.btn-reject:hover { background: var(--loss); color: #fff; box-shadow: var(--shadow-loss); }

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-color);
}

.btn-outline:hover { color: var(--text-primary); border-color: rgba(255,255,255,0.2); background: var(--bg-card); }

.btn-sm {
  padding: 5px 10px;
  font-size: 0.7rem;
  border-radius: 6px;
}

.btn-lg {
  padding: 12px 24px;
  font-size: 0.88rem;
  border-radius: 10px;
}

.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

/* 로딩 스피너 (버튼 내) */
.btn-spinner {
  width: 12px;
  height: 12px;
  border: 2px solid rgba(0,0,0,0.3);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* =============================================
   폼 요소
   ============================================= */
.form-group {
  margin-bottom: 14px;
}

.form-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 9px 12px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.85rem;
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(243,186,47,0.1);
}

.form-control::placeholder { color: var(--text-muted); }

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23848e9c'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 14px;
  padding-right: 32px;
}

/* 토글 스위치 */
.toggle {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 22px;
}

.toggle input { opacity: 0; width: 0; height: 0; }

.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 22px;
  transition: var(--transition);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: var(--transition);
}

.toggle input:checked + .toggle-slider { background: var(--profit-dim); border-color: var(--profit); }
.toggle input:checked + .toggle-slider::before { background: var(--profit); transform: translateX(18px); }

/* =============================================
   설정 패널
   ============================================= */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.settings-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  overflow: hidden;
}

.settings-section-header {
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 8px;
}

.settings-item {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.settings-item:last-child { border-bottom: none; }

.settings-item-info { flex: 1; min-width: 0; }

.settings-item-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
}

.settings-item-desc {
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.settings-item-value {
  flex-shrink: 0;
}

/* 설정 수정 폼 */
.settings-input {
  width: 120px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 5px 8px;
  color: var(--text-primary);
  font-size: 0.82rem;
  text-align: right;
  font-family: 'JetBrains Mono', monospace;
  transition: var(--transition);
  outline: none;
}

.settings-input:focus { border-color: var(--accent); }
.settings-input.wide { width: 180px; }

/* =============================================
   거래 이력 테이블
   ============================================= */
.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.history-table thead th {
  padding: 8px 10px;
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.history-table tbody tr { border-bottom: 1px solid rgba(255,255,255,0.04); transition: var(--transition); }
.history-table tbody tr:hover { background: var(--bg-card-hover); }
.history-table tbody td { padding: 8px 10px; }

/* =============================================
   사이드바 위젯
   ============================================= */
.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius-sm);
  padding: 12px;
}

.sidebar-widget-title {
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.sidebar-stat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  font-size: 0.76rem;
}

.sidebar-stat:last-child { border-bottom: none; }
.sidebar-stat-label { color: var(--text-muted); }
.sidebar-stat-value { font-family: 'JetBrains Mono', monospace; font-weight: 600; }

/* 마켓 지수 바 */
.market-bar {
  height: 3px;
  border-radius: 3px;
  background: var(--border-color);
  margin-top: 4px;
  overflow: hidden;
}

.market-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}

/* =============================================
   알림 토스트
   ============================================= */
#toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 12px 16px;
  max-width: 320px;
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  animation: slideIn 0.3s ease;
  pointer-events: auto;
}

.toast.success { border-left: 3px solid var(--profit); }
.toast.error   { border-left: 3px solid var(--loss); }
.toast.warning { border-left: 3px solid var(--accent); }
.toast.info    { border-left: 3px solid #4fd1c5; }

.toast-icon {
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.toast.success .toast-icon { color: var(--profit); }
.toast.error   .toast-icon { color: var(--loss); }
.toast.warning .toast-icon { color: var(--accent); }
.toast.info    .toast-icon { color: #4fd1c5; }

.toast-body { flex: 1; }
.toast-title { font-size: 0.78rem; font-weight: 700; color: var(--text-primary); }
.toast-msg   { font-size: 0.72rem; color: var(--text-secondary); margin-top: 2px; }

.toast-close {
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  flex-shrink: 0;
  transition: var(--transition);
}

.toast-close:hover { color: var(--text-primary); }

.toast.fade-out { animation: slideOut 0.3s ease forwards; }

@keyframes slideIn  { from { transform: translateX(100%); opacity: 0; } to { transform: none; opacity: 1; } }
@keyframes slideOut { from { transform: none; opacity: 1; } to { transform: translateX(100%); opacity: 0; } }

/* =============================================
   모달
   ============================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

.modal-overlay.hidden { display: none; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  animation: scaleIn 0.2s ease;
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-title i { color: var(--accent); }

.modal-close {
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.1rem;
  transition: var(--transition);
}

.modal-close:hover { color: var(--loss); }

.modal-body { padding: 20px; }
.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

@keyframes fadeIn  { from { opacity: 0; } to { opacity: 1; } }
@keyframes scaleIn { from { transform: scale(0.96); opacity: 0; } to { transform: scale(1); opacity: 1; } }

/* =============================================
   탭 컨텐츠 전환
   ============================================= */
.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn 0.2s ease; }

/* =============================================
   로그인 페이지
   ============================================= */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.login-page::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(243,186,47,0.05) 0%, transparent 60%);
  animation: rotate 20s linear infinite;
}

@keyframes rotate { to { transform: rotate(360deg); } }

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 40px 36px;
  width: 360px;
  position: relative;
  z-index: 1;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.login-logo {
  text-align: center;
  margin-bottom: 28px;
}

.login-logo-text {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--accent);
  letter-spacing: -2px;
  text-shadow: var(--shadow-glow);
}

.login-logo-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  margin-top: 4px;
}

/* =============================================
   차트 컨테이너
   ============================================= */
.chart-wrap {
  position: relative;
  width: 100%;
}

.chart-wrap canvas { max-width: 100%; }

/* =============================================
   빈 상태
   ============================================= */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  color: var(--text-muted);
  text-align: center;
  gap: 10px;
}

.empty-state i { font-size: 2rem; opacity: 0.4; }
.empty-state-title { font-size: 0.85rem; font-weight: 600; color: var(--text-secondary); }
.empty-state-desc  { font-size: 0.75rem; line-height: 1.6; }

/* =============================================
   수동 주문 패널
   ============================================= */
.order-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 12px;
}

.order-side-btn {
  padding: 10px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 800;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-align: center;
}

.order-side-btn.buy-side {
  background: var(--profit-dim);
  color: var(--profit);
  border-color: rgba(14,203,129,0.3);
}

.order-side-btn.buy-side.selected,
.order-side-btn.buy-side:hover {
  background: var(--profit);
  color: #000;
  box-shadow: var(--shadow-profit);
}

.order-side-btn.sell-side {
  background: var(--loss-dim);
  color: var(--loss);
  border-color: rgba(246,70,93,0.3);
}

.order-side-btn.sell-side.selected,
.order-side-btn.sell-side:hover {
  background: var(--loss);
  color: #fff;
  box-shadow: var(--shadow-loss);
}

/* =============================================
   시스템 상태 표시줄 (하단)
   ============================================= */
.status-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 28px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 20px;
  font-size: 0.65rem;
  color: var(--text-muted);
  z-index: 100;
}

.status-bar-item {
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.status-bar-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--status-offline);
}

.status-bar-dot.ok { background: var(--status-active); }

body { padding-bottom: 28px; }

/* =============================================
   반응형
   ============================================= */
@media (max-width: 900px) {
  .main-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
    position: fixed;
    left: 0;
    top: var(--nav-height);
    width: 260px;
    height: calc(100vh - var(--nav-height));
    z-index: 300;
    box-shadow: 4px 0 24px rgba(0,0,0,0.4);
  }

  .sidebar.open { display: flex; }

  .overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 299;
    display: none;
  }

  .overlay.open { display: block; }
}

@media (max-width: 600px) {
  .top-nav { padding: 0 12px; gap: 10px; }
  .main-content { padding: 12px; }
  .signal-grid { grid-template-columns: 1fr; }
  .spot-grid   { grid-template-columns: 1fr 1fr; }
  .data-table  { font-size: 0.75rem; }
}

/* =============================================
   애니메이션 유틸
   ============================================= */
.fade-in  { animation: fadeIn 0.3s ease; }
.slide-up { animation: slideUp 0.3s ease; }

@keyframes slideUp { from { transform: translateY(10px); opacity: 0; } to { transform: none; opacity: 1; } }

/* 펄스 강조 */
.pulse { animation: pulseAnim 2s ease infinite; }
@keyframes pulseAnim { 0%,100% { opacity: 1; } 50% { opacity: 0.6; } }

/* 숫자 카운트업 효과 */
.count-up { transition: all 0.5s ease; }

/* =============================================
   색상 유틸 클래스
   ============================================= */
.text-profit  { color: var(--profit) !important; }
.text-loss    { color: var(--loss) !important; }
.text-accent  { color: var(--accent) !important; }
.text-muted   { color: var(--text-muted) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.bg-profit-dim { background: var(--profit-dim); }
.bg-loss-dim   { background: var(--loss-dim); }
.bg-accent-dim { background: var(--accent-dim); }

@media (max-width: 768px) {
  .conn-badge span { display: none; }
  .conn-badge { padding: 4px 8px; gap: 0; border: none; background: transparent; }
  #kakao-test-btn { font-size: 0; padding: 4px 8px; }
  #kakao-test-btn i { font-size: 14px; margin-right: 0; }
  .top-nav { gap: 4px; padding: 0 8px; }
  .nav-tabs { flex: 1; overflow-x: auto; -webkit-overflow-scrolling: touch; padding: 2px; }
  .nav-tab { padding: 6px 12px; }
}

@media (max-width: 600px) {
  .nav-tab span { display: none; }
  .nav-tab .badge { display: flex; } /* badge should stay */
}