/* ===== Bitget Style Dark Theme ===== */
:root {
  --bg: #0B0E11;
  --bg-elev: #161B22;
  --bg-elev-2: #1E2329;
  --border: #2A2F3A;
  --border-strong: #383F4D;
  --text: #EAECEF;
  --text-muted: #848E9C;
  --text-faint: #5E6673;
  --accent: #00F0B4;       /* Bitget signature mint */
  --accent-dim: #00B388;
  --up: #16C784;
  --down: #EA3943;
  --warn: #F0B90B;
  --radius: 6px;
  --radius-lg: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Pretendard",
               "Apple SD Gothic Neo", "Noto Sans KR", Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  max-width: 100%;
  overflow-x: hidden;
}

button { font-family: inherit; cursor: pointer; }
input, select { font-family: inherit; }

/* ===== Header ===== */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 12px 20px;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
.brand-title {
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
}
.brand-symbol {
  font-size: 12px;
  color: var(--text-muted);
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.header-controls {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
}
.control-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.control-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.header-input {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 10px;
  border-radius: var(--radius);
  font-size: 13px;
  min-width: 120px;
  outline: none;
  transition: border-color 0.15s;
}
.header-input:focus { border-color: var(--accent); }
.header-input:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.fee-pair {
  display: flex;
  align-items: center;
  gap: 4px;
}
.fee-input { min-width: 70px; width: 70px; }
.slash { color: var(--text-muted); }

/* Toggle Buttons */
.toggle {
  display: inline-flex;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.toggle-btn {
  padding: 7px 14px;
  background: transparent;
  color: var(--text-muted);
  border: 0;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.15s;
}
.toggle-btn:hover { color: var(--text); }
.toggle-btn.active {
  background: var(--bg-elev-2);
  color: var(--text);
}
.toggle-btn.long.active {
  background: var(--up);
  color: #0B0E11;
}
.toggle-btn.short.active {
  background: var(--down);
  color: #fff;
}
.margin-mode-toggle .toggle-btn.active {
  background: var(--accent);
  color: #0B0E11;
}

/* ===== Tab Navigation ===== */
.tab-nav {
  display: flex;
  gap: 4px;
  padding: 0 20px;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.tab-btn {
  background: transparent;
  border: 0;
  color: var(--text-muted);
  padding: 14px 18px;
  font-size: 14px;
  font-weight: 600;
  position: relative;
  white-space: nowrap;
  transition: color 0.15s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); }
.tab-btn.active::after {
  content: "";
  position: absolute;
  left: 18px; right: 18px; bottom: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px 2px 0 0;
}

/* ===== Main ===== */
.app-main {
  padding: 20px;
  max-width: 1600px;
  margin: 0 auto;
}
.tab-content {
  display: none;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
}
.tab-content.active { display: grid; }

@media (max-width: 1100px) {
  .tab-content { grid-template-columns: 1fr; }
}

/* ===== Tablet (≤ 900px) ===== */
@media (max-width: 900px) {
  .app-header {
    padding: 10px 14px;
    gap: 12px;
  }
  .header-controls {
    width: 100%;
    gap: 10px;
    justify-content: flex-start;
  }
  .header-input { min-width: 110px; }
  .fee-input { min-width: 60px; width: 60px; }
  .brand-title { font-size: 15px; }
  .app-main { padding: 14px; }
  .panel { padding: 16px; }
}

/* ===== Mobile (≤ 640px) ===== */
@media (max-width: 640px) {
  html, body { font-size: 13px; }

  /* Header */
  .app-header {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 10px 12px;
    overflow-x: hidden;
  }
  .brand {
    justify-content: space-between;
  }
  .brand-symbol { font-size: 11px; padding: 2px 6px; }
  .header-controls {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 8px 10px;
    width: 100%;
    max-width: 100%;
  }
  .control-group { min-width: 0; max-width: 100%; }
  .control-label {
    font-size: 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .header-input {
    min-width: 0;
    width: 100%;
    padding: 6px 8px;
    font-size: 12px;
  }
  .fee-pair { width: 100%; min-width: 0; }
  .fee-input { flex: 1 1 0; min-width: 0; width: auto; }

  .toggle-btn { padding: 6px 10px; font-size: 12px; }

  /* Tab nav */
  .tab-nav {
    padding: 0 8px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  .tab-nav::-webkit-scrollbar { display: none; }
  .tab-btn {
    padding: 11px 12px;
    font-size: 13px;
  }
  .tab-btn.active::after { left: 12px; right: 12px; }

  /* Main */
  .app-main { padding: 10px; }
  .tab-content { gap: 12px; }
  .panel { padding: 14px; border-radius: 8px; }
  .panel-title { font-size: 14px; }
  .panel-help { font-size: 11px; }

  /* Form */
  .form-grid,
  .form-grid.two-col {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .form-block { padding: 12px; gap: 8px; }
  .form-grid label input,
  .form-grid label select,
  .form-block label input,
  .form-block label select {
    padding: 10px 12px;
    font-size: 15px; /* 모바일에서 입력 편의 — iOS 자동 줌 방지 위해 16px 가까이 */
  }
  .radio-row {
    flex-direction: column;
    gap: 8px;
  }
  .extra-input input { max-width: 100%; }

  /* 모바일 안전망 — 자식이 viewport 폭 초과해서 panel 오른쪽이 잘리는 것 방지 */
  .panel { min-width: 0; max-width: 100%; overflow: hidden; }
  .tab-content { min-width: 0; }
  .form-grid, .form-grid.two-col { min-width: 0; }
  /* 주의: type=radio/checkbox는 width 100% 적용하면 안 됨 (label 레이아웃 깨짐) */
  .form-grid label input:not([type="radio"]):not([type="checkbox"]),
  .form-grid label select,
  .form-block label input:not([type="radio"]):not([type="checkbox"]),
  .form-block label select,
  .extra-input input:not([type="radio"]):not([type="checkbox"]),
  .form-section input:not([type="radio"]):not([type="checkbox"]) {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  /* Trade table — 모바일에서 가로 스크롤 없이 한 화면에 다 들어가도록 압축
     주의: .table-wrap에 overflow-x: hidden 주면 ③ 청산가 탭의 compare-table이 잘림.
     trade-table 자체에 table-layout: fixed; width: 100%;로 가로 스크롤이 안 생기게 함. */
  .trade-table {
    font-size: 11px;
    min-width: 0;
    width: 100%;
    table-layout: fixed;
  }
  .trade-table th,
  .trade-table td {
    padding: 6px 4px;
    white-space: nowrap;
    word-break: keep-all;       /* "레버리지" 등 한글 글자 단위 끊김 방지 */
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .trade-table input,
  .trade-table select {
    font-size: 13px;
    min-width: 0;
    width: 100%;
    padding: 4px 4px;
  }
  /* 컬럼 폭 분배 + 모바일에서만 헤더 라벨 단축
     회차→#, 진입가(USDT)→진입가, 마진(USDT)→마진, 레버리지→레버, 주문타입→타입 */
  /* specificity 주의: .trade-table th 글로벌 룰이 뒤에 정의돼서 모바일 룰을 덮음 → .tab-content prefix로 specificity 올림 */
  .tab-content .trade-table thead th:nth-child(1),
  .tab-content .trade-table thead th:nth-child(2),
  .tab-content .trade-table thead th:nth-child(3),
  .tab-content .trade-table thead th:nth-child(4),
  .tab-content .trade-table thead th:nth-child(5) {
    font-size: 0;                     /* 원본 텍스트 숨김 */
    letter-spacing: 0;
  }
  .tab-content .trade-table thead th:nth-child(1)::before { content: "#";     font-size: 11px; font-weight: 600; color: var(--text-muted); letter-spacing: 0; }
  .tab-content .trade-table thead th:nth-child(2)::before { content: "진입가"; font-size: 11px; font-weight: 600; color: var(--text-muted); letter-spacing: 0; }
  .tab-content .trade-table thead th:nth-child(3)::before { content: "마진";   font-size: 11px; font-weight: 600; color: var(--text-muted); letter-spacing: 0; }
  .tab-content .trade-table thead th:nth-child(4)::before { content: "레버";   font-size: 11px; font-weight: 600; color: var(--text-muted); letter-spacing: 0; }
  .tab-content .trade-table thead th:nth-child(5)::before { content: "타입";   font-size: 11px; font-weight: 600; color: var(--text-muted); letter-spacing: 0; }

  /* 회차 8% / 진입가 23% / 마진 19% / 레버 15% / 타입 26% / 수량(숨김) / 삭제 9% = 100% */
  .trade-table th:nth-child(1),
  .trade-table td:nth-child(1) { width: 8%;  padding: 6px 3px; text-align: center; }
  .trade-table th:nth-child(2),
  .trade-table td:nth-child(2) { width: 23%; }
  .trade-table th:nth-child(3),
  .trade-table td:nth-child(3) { width: 19%; }
  .trade-table th:nth-child(4),
  .trade-table td:nth-child(4) { width: 15%; }
  .trade-table th:nth-child(5),
  .trade-table td:nth-child(5) { width: 26%; }
  /* 수량(자동) 컬럼은 모바일에서 숨김 — 결과 패널에 총 수량이 별도 표시됨 */
  .trade-table th:nth-child(6),
  .trade-table td:nth-child(6) { display: none; }
  .trade-table th:nth-child(7),
  .trade-table td:nth-child(7) { width: 9%; padding-right: 4px; }

  /* 주문타입 select: native arrow 대신 작은 커스텀 arrow로 폭 절약 */
  .trade-table td:nth-child(5) select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='8' height='5' viewBox='0 0 8 5'><polygon points='0,0 8,0 4,5' fill='%23848e9c'/></svg>");
    background-repeat: no-repeat;
    background-position: right 3px center;
    padding-right: 14px;
    text-align: left;
    text-align-last: left;
  }
  .trade-table .del-btn { font-size: 15px; padding: 2px 4px; }

  /* Result cards — .tab-content prefix로 specificity 올림 (글로벌 .result-grid가 후순위라 그냥 .result-grid면 override 못함) */
  .tab-content .result-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .result-card { padding: 10px 12px; gap: 4px; }
  .result-label { font-size: 10px; }
  .result-value { font-size: 15px; }
  .result-value .sub { font-size: 11px; }

  /* compare-table 헤더 모바일 단축 + th 자체 letter-spacing 0 (text-node 폭 영향 차단)
     specificity 주의: .compare-table th 글로벌 룰 override 위해 .tab-content prefix 사용 */
  .tab-content .compare-table thead th { letter-spacing: 0; }
  .tab-content .compare-table thead th:nth-child(1),
  .tab-content .compare-table thead th:nth-child(3),
  .tab-content .compare-table thead th:nth-child(5) { font-size: 0; }
  .tab-content .compare-table thead th:nth-child(1)::before { content: "레버"; font-size: 10px; font-weight: 600; color: var(--text-muted); letter-spacing: 0; }
  .tab-content .compare-table thead th:nth-child(3)::before { content: "수량"; font-size: 10px; font-weight: 600; color: var(--text-muted); letter-spacing: 0; }
  .tab-content .compare-table thead th:nth-child(5)::before { content: "거리%"; font-size: 10px; font-weight: 600; color: var(--text-muted); letter-spacing: 0; }

  /* Compare table — 5컬럼이지만 viewport 폭에 강제로 압축 (가로 스크롤 방지) */
  .compare-table {
    font-size: 10px;
    table-layout: fixed;
    width: 100%;
  }
  .compare-table th,
  .compare-table td {
    padding: 5px 4px;
    white-space: nowrap;
    word-break: keep-all;
    overflow: hidden;
    text-overflow: ellipsis;
    letter-spacing: 0;
  }
  /* 컬럼 폭: 레버 14% / 명목 26% / 수량 21% / 청산가 24% / 거리% 15% */
  .compare-table th:nth-child(1),
  .compare-table td:nth-child(1) { width: 14%; text-align: center; }
  .compare-table th:nth-child(2),
  .compare-table td:nth-child(2) { width: 26%; }
  .compare-table th:nth-child(3),
  .compare-table td:nth-child(3) { width: 21%; }
  .compare-table th:nth-child(4),
  .compare-table td:nth-child(4) { width: 24%; }
  .compare-table th:nth-child(5),
  .compare-table td:nth-child(5) { width: 15%; }

  .row-actions { flex-wrap: wrap; }
  .btn { padding: 10px 14px; font-size: 13px; }

  .app-footer {
    flex-direction: column;
    gap: 4px;
    text-align: center;
    font-size: 11px;
    padding: 14px 12px;
  }
}

/* ===== Very narrow (≤ 380px) ===== */
@media (max-width: 380px) {
  .header-controls { grid-template-columns: minmax(0, 1fr); }
  .tab-content .result-grid { grid-template-columns: 1fr; }
  .brand-symbol { display: none; }
  /* compare-table — 360px 폰에서 5컬럼 빠듯하니 더 압축 */
  .compare-table { font-size: 9px; }
  .compare-table th,
  .compare-table td { padding: 4px 3px; }
  /* 360px에서는 "거리%" 헤더도 한 글자로 */
  .tab-content .compare-table thead th:nth-child(5)::before { content: "%"; }
}

/* ===== Panel ===== */
.panel {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
}
.panel-title {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 4px 0;
  color: var(--text);
}
.panel-help {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0 0 16px 0;
}
.panel-help strong { color: var(--text); }

.sub-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin: 24px 0 10px 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== Form Grid ===== */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.form-grid.two-col { grid-template-columns: 1fr 1fr; }
.form-grid label,
.form-block label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--text-muted);
}
.form-grid label input,
.form-grid label select,
.form-block label input,
.form-block label select {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}
.form-grid label input:focus,
.form-block label input:focus { border-color: var(--accent); }
.form-grid label.checkbox {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-size: 13px;
}

.form-grid .form-section {
  grid-column: 1 / -1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
}
.form-section-title {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.radio-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.radio-row label {
  flex-direction: row;
  align-items: center;
  gap: 6px;
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
}

.form-block {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.form-block-title {
  font-size: 12px;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.extra-input {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.extra-input label {
  font-size: 12px;
  color: var(--text-muted);
}
.extra-input input {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
  max-width: 260px;
}
.extra-input input:focus { border-color: var(--accent); }
.muted { color: var(--text-muted); }
.muted-inline { color: var(--text-faint); font-size: 11px; font-weight: 400; }

/* ===== Trade Table ===== */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}
.trade-table,
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.trade-table th,
.trade-table td,
.compare-table th,
.compare-table td {
  padding: 8px 10px;
  text-align: right;
  border-bottom: 1px solid var(--border);
}
.trade-table th,
.compare-table th {
  background: var(--bg-elev-2);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: sticky;
  top: 0;
}
.trade-table th:first-child,
.trade-table td:first-child,
.compare-table th:first-child,
.compare-table td:first-child { text-align: left; }
.trade-table tbody tr:last-child td,
.compare-table tbody tr:last-child td { border-bottom: 0; }
.trade-table tbody tr:hover { background: var(--bg-elev-2); }

.trade-table input,
.trade-table select {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text);
  padding: 4px 6px;
  border-radius: 4px;
  font-size: 13px;
  width: 100%;
  text-align: right;
  outline: none;
}
.trade-table input:hover,
.trade-table select:hover { border-color: var(--border); }
.trade-table input:focus,
.trade-table select:focus { border-color: var(--accent); background: var(--bg); }
.trade-table .qty-cell {
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}
.trade-table .del-btn {
  background: transparent;
  border: 0;
  color: var(--text-faint);
  font-size: 16px;
  padding: 2px 6px;
}
.trade-table .del-btn:hover { color: var(--down); }

/* ===== Row Actions ===== */
.row-actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

/* ===== Buttons ===== */
.btn {
  border: 0;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  transition: all 0.15s;
}
.btn-secondary {
  background: var(--accent);
  color: #0B0E11;
}
.btn-secondary:hover { background: var(--accent-dim); }
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text); border-color: var(--border-strong); }
.btn-link {
  background: transparent;
  color: var(--accent);
  padding: 6px 0;
  margin-bottom: 12px;
  font-size: 12px;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.btn-link:hover { color: var(--accent-dim); }

/* ===== Result Cards ===== */
.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}
.result-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.result-card.highlight {
  background: linear-gradient(135deg, rgba(0,240,180,0.10), rgba(0,240,180,0.02));
  border-color: var(--accent-dim);
}
.result-card.success { border-color: rgba(22,199,132,0.4); }
.result-card.danger { border-color: rgba(234,57,67,0.4); }
.result-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  font-weight: 600;
}
.result-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  word-break: break-all;
}
.result-value.muted { color: var(--text-faint); font-weight: 500; }
.result-value.up { color: var(--up); }
.result-value.down { color: var(--down); }
.result-value .sub {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  margin-top: 2px;
}
.result-value.danger-text { color: var(--down); font-size: 13px; }

/* ===== Footer ===== */
.app-footer {
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 12px;
  border-top: 1px solid var(--border);
  margin-top: 20px;
}

/* ===== Misc ===== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type=number] { -moz-appearance: textfield; }