:root {
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #21262d;
  --border: #30363d;
  --text: #e6edf3;
  --text2: #8b949e;
  --accent: #58a6ff;
  --green: #3fb950;
  --red: #f85149;
  --yellow: #d29922;
  --purple: #bc8cff;
  --mono: 'JetBrains Mono', monospace;
  --sans: 'Noto Sans KR', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  min-height: 100vh;
}

/* ── 헤더 ── */
header {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: -0.5px;
}
.logo span { color: var(--text2); font-weight: 400; }

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sheet-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text2);
  font-family: var(--mono);
}
.sheet-status .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--text2);
}
.sheet-status.connected .dot { background: var(--green); }

/* ── 레이아웃 ── */
.layout {
  display: flex;
  height: calc(100vh - 56px);
}

/* ── 사이드바 ── */
aside {
  width: 220px;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  padding: 16px 0;
  flex-shrink: 0;
  overflow-y: auto;
}

.sidebar-section {
  padding: 0 12px;
  margin-bottom: 8px;
}

.sidebar-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--text2);
  letter-spacing: 0.8px;
  text-transform: uppercase;
  padding: 6px 8px;
}

.account-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s;
  color: var(--text2);
  font-size: 13px;
  position: relative;
}
.account-item:hover { background: var(--bg3); color: var(--text); }
.account-item.active {
  background: rgba(88,166,255,0.1);
  color: var(--accent);
}
.account-item .badge {
  margin-left: auto;
  font-size: 10px;
  background: var(--bg3);
  color: var(--text2);
  padding: 1px 6px;
  border-radius: 10px;
  font-family: var(--mono);
}
.account-item.active .badge {
  background: rgba(88,166,255,0.2);
  color: var(--accent);
}
.account-item .coming {
  margin-left: auto;
  font-size: 10px;
  color: var(--text2);
  font-style: italic;
}

.sidebar-divider {
  height: 1px;
  background: var(--border);
  margin: 12px 12px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  cursor: pointer;
  transition: all 0.15s;
  color: var(--text2);
  font-size: 13px;
  border-left: 2px solid transparent;
}
.nav-item:hover { color: var(--text); background: var(--bg3); }
.nav-item.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: rgba(88,166,255,0.05);
}
.nav-item svg { width: 15px; height: 15px; flex-shrink: 0; }

/* ── 메인 콘텐츠 ── */
main {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ── 섹션 헤더 ── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.section-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

/* ── 카드 ── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.card-header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}
.card-body { padding: 18px; }

/* ── 구글시트 연동 패널 ── */
.sheet-setup {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}

.sheet-setup h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.input-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.input-group label {
  font-size: 11px;
  color: var(--text2);
  font-weight: 500;
}
.input-group input, .input-group select {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 8px 12px;
  font-size: 13px;
  font-family: var(--mono);
  outline: none;
  transition: border-color 0.15s;
  width: 100%;
}
.input-group input:focus, .input-group select:focus {
  border-color: var(--accent);
}
.input-group input::placeholder { color: var(--text2); }

/* ── 버튼 ── */
.btn {
  padding: 8px 16px;
  border-radius: 6px;
  border: none;
  font-size: 13px;
  font-family: var(--sans);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #0d1117;
}
.btn-primary:hover { background: #79c0ff; }
.btn-secondary {
  background: var(--bg3);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--border); }
.btn-green {
  background: var(--green);
  color: #0d1117;
}
.btn-green:hover { opacity: 0.85; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

/* ── 테이블 ── */
.table-wrap {
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
thead th {
  background: var(--bg3);
  padding: 10px 12px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text2);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
tbody tr {
  border-bottom: 1px solid rgba(48,54,61,0.5);
  transition: background 0.1s;
}
tbody tr:hover { background: rgba(48,54,61,0.4); }
tbody td {
  padding: 9px 12px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 12px;
  white-space: nowrap;
}
.td-label { font-family: var(--sans); font-size: 13px; }
.td-right { text-align: right; }

/* ── 구분 뱃지 ── */
.badge-type {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-family: var(--sans);
  font-weight: 600;
}
.badge-매수  { background: rgba(88,166,255,0.15); color: #58a6ff; }
.badge-매도  { background: rgba(248,81,73,0.15);  color: #f85149; }
.badge-분배금입금 { background: rgba(63,185,80,0.15); color: #3fb950; }
.badge-입금  { background: rgba(210,153,34,0.15); color: #d29922; }
.badge-예탁금이용료 { background: rgba(139,148,158,0.15); color: #8b949e; }
.badge-이체송금 { background: rgba(188,140,255,0.15); color: #bc8cff; }

/* ── 입력 폼 ── */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}

/* ── 업로드 영역 ── */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text2);
}
.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--accent);
  background: rgba(88,166,255,0.05);
  color: var(--accent);
}
.upload-zone svg { width: 36px; height: 36px; margin-bottom: 10px; opacity: 0.6; }
.upload-zone p { font-size: 13px; margin-bottom: 4px; }
.upload-zone small { font-size: 11px; }

/* ── 요약 카드 ── */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.summary-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}
.summary-card .label {
  font-size: 11px;
  color: var(--text2);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}
.summary-card .value {
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}
.summary-card .sub {
  font-size: 11px;
  color: var(--text2);
  margin-top: 4px;
  font-family: var(--mono);
}
.text-green { color: var(--green); }
.text-red   { color: var(--red); }
.text-yellow{ color: var(--yellow); }
.text-blue  { color: var(--accent); }

/* ── 탭 ── */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}
.tab {
  padding: 10px 18px;
  font-size: 13px;
  color: var(--text2);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.15s;
  font-weight: 500;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

.tab-content { display: none; padding: 18px; }
.tab-content.active { display: block; }

/* ── 페이지 전환 ── */
.page { display: none; }
.page.active { display: flex; flex-direction: column; gap: 20px; }

/* ── 알림 ── */
.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 18px;
  font-size: 13px;
  color: var(--text);
  z-index: 999;
  transform: translateY(80px);
  opacity: 0;
  transition: all 0.3s;
  max-width: 320px;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.success { border-left: 3px solid var(--green); }
.toast.error   { border-left: 3px solid var(--red); }
.toast.info    { border-left: 3px solid var(--accent); }

/* ── 로딩 ── */
.spinner {
  width: 16px; height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── 빈 상태 ── */
.empty-state {
  text-align: center;
  padding: 48px;
  color: var(--text2);
}
.empty-state p { font-size: 14px; margin-top: 8px; }

/* ── 반응형 ── */
@media (max-width: 900px) {
  .summary-grid { grid-template-columns: repeat(2, 1fr); }
  aside { width: 180px; }
}

.help-text {
  font-size: 11px;
  color: var(--text2);
  margin-top: 4px;
  line-height: 1.5;
}

.divider {
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}

.flex-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--bg3);
  color: var(--text2);
  font-family: var(--mono);
}