:root {
  color-scheme: light;
  --surface-1:      #fbf8f4;
  --page-plane:     #1d2738;
  --text-primary:   #201c17;
  --text-secondary: #5c5348;
  --text-muted:     #93897a;
  --gridline:       #e8e1d5;
  --baseline:       #cfc5b5;
  --border:         rgba(29,39,56,0.12);

  /* 예림 브랜드 컬러 (2026-27 리브랜딩 컨셉 기준): Deep Navy / Brown / Dusty Pink */
  --brand-navy:       #1d2738;
  --brand-brown:      #54422c;
  --brand-dusty-pink: #dcbcb4;

  /* 딥네이비 배경(topbar/filter-bar/tab-bar/페이지 캔버스) 위에 올라가는 텍스트/보더 토큰 */
  --shell-text:        #f4efe8;
  --shell-text-muted:  #b9c3d1;
  --shell-border:      rgba(244,239,232,0.14);

  /* 버튼 = 브라운, 포인트 컬러 = 더스트 핑크 */
  --button-bg:        var(--brand-brown);
  --button-bg-hover:  #6b5439;
  --button-text:      #ffffff;
  --accent:           var(--brand-dusty-pink);

  /* series-1은 브랜드 Deep Navy 톤에서 파생 — 차트 채도/명도 기준(dataviz 팔레트 검증) 통과 확인됨 */
  --series-1: #365da1; /* navy blue */
  --series-2: #eb6834; /* orange */
  --series-3: #1baf7a; /* aqua */
  --series-4: #eda100; /* yellow */
  --series-5: #e87ba4; /* magenta */
  --series-6: #008300; /* green */
  --series-7: #4a3aa7; /* violet */
  --series-8: #e34948; /* red */
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --surface-1:      #1a1a19;
    --page-plane:     #1d2738;
    --text-primary:   #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted:     #898781;
    --gridline:       #2c2c2a;
    --baseline:       #383835;
    --border:         rgba(255,255,255,0.10);

    --brand-navy:       #5e7bab;
    --brand-brown:      #b09068;
    --brand-dusty-pink: #dcbcb4;

    --shell-text:        #f4efe8;
    --shell-text-muted:  #b9c3d1;
    --shell-border:      rgba(244,239,232,0.14);

    --button-bg:        var(--brand-brown);
    --button-bg-hover:  #c7a37a;
    --button-text:      #1d2738;
    --accent:           var(--brand-dusty-pink);

    --series-1: #4d7ccb;
    --series-2: #d95926;
    --series-3: #199e70;
    --series-4: #c98500;
    --series-5: #d55181;
    --series-6: #008300;
    --series-7: #9085e9;
    --series-8: #e66767;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background-color: var(--page-plane);
  background-image: url('/static/img/logo-watermark.png');
  background-repeat: no-repeat;
  background-position: right -10px bottom 10px;
  background-size: 320px auto;
  background-attachment: fixed;
  color: var(--text-primary);
}

.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--brand-navy);
}

.login-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
}

.login-logo {
  height: 44px;
  width: auto;
}

.login-box {
  background: var(--surface-1);
  border-top: 4px solid var(--brand-dusty-pink);
  border-radius: 4px;
  padding: 36px 40px;
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.35);
}

.login-box h1 { font-size: 1.2rem; margin: 0; color: var(--brand-navy); }
.login-box .subtitle { color: var(--brand-brown); font-size: 0.85rem; margin: 0 0 8px; }
.login-box label { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; color: var(--text-secondary); }
.login-box input {
  padding: 8px 10px;
  border: 1px solid var(--baseline);
  border-radius: 4px;
  background: var(--surface-1);
  color: var(--text-primary);
  font-size: 0.95rem;
}
.login-box button {
  margin-top: 8px;
  padding: 10px;
  border: none;
  border-radius: 4px;
  background: var(--button-bg);
  color: var(--button-text);
  font-size: 0.95rem;
  cursor: pointer;
}
.login-box button:hover { background: var(--button-bg-hover); }
.login-box .error { color: var(--series-8); font-size: 0.85rem; margin: 0; }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 24px;
  background: var(--brand-navy);
  border-bottom: 1px solid var(--shell-border);
  border-top: 3px solid var(--brand-dusty-pink);
}
.topbar h1 { font-size: 1.1rem; margin: 0; color: var(--shell-text); }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { height: 15px; width: auto; display: block; }
.user-info { display: flex; align-items: center; gap: 12px; color: var(--shell-text-muted); font-size: 0.9rem; }
.link-button {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 0.9rem;
  text-decoration: underline;
  padding: 0;
}
.link-button:hover { color: var(--shell-text); }

.filter-bar {
  display: flex;
  align-items: flex-start;
  padding: 10px 24px;
  background: var(--brand-navy);
  border-bottom: 1px solid var(--shell-border);
}
.filter-toggle-btn { display: none; }
.filter-items-wrap {
  display: flex;
  flex: 1;
  min-width: 0;
  flex-wrap: nowrap;
  overflow-x: auto;
  gap: 12px;
  align-items: flex-end;
}
.filter-item, .filter-actions { flex: 0 0 auto; }

.filter-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-end;
  margin-left: auto;
}

#period-preset {
  padding: 6px 8px;
  border: 1px solid var(--baseline);
  border-radius: 6px;
  background: var(--surface-1);
  color: var(--text-primary);
  font-size: 0.85rem;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 4px;
}
.card-header h2 { margin: 0; }
.card-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.card-controls select, .card-controls input {
  padding: 5px 8px;
  border: 1px solid var(--baseline);
  border-radius: 6px;
  background: var(--surface-1);
  color: var(--text-primary);
  font-size: 0.8rem;
  max-width: 140px;
}
.filter-item { display: flex; flex-direction: column; gap: 4px; font-size: 0.8rem; color: var(--shell-text-muted); }
.filter-item input, .filter-item select {
  padding: 6px 8px;
  border: 1px solid var(--baseline);
  border-radius: 6px;
  background: var(--surface-1);
  color: var(--text-primary);
  min-width: 120px;
  font-size: 0.85rem;
}
.reset-button {
  padding: 7px 14px;
  border: 1px solid var(--shell-border);
  border-radius: 6px;
  background: transparent;
  color: var(--shell-text);
  cursor: pointer;
  font-size: 0.85rem;
  height: fit-content;
}
.reset-button:hover { background: rgba(244,239,232,0.08); }

.refresh-button {
  padding: 7px 14px;
  border: 1px solid var(--button-bg);
  border-radius: 6px;
  background: var(--button-bg);
  color: var(--button-text);
  cursor: pointer;
  font-size: 0.85rem;
  height: fit-content;
}
.refresh-button:hover:not(:disabled) { background: var(--button-bg-hover); border-color: var(--button-bg-hover); }
.refresh-button:disabled {
  opacity: 0.6;
  cursor: default;
}

.refresh-status {
  color: var(--shell-text-muted);
  font-size: 0.78rem;
  align-self: center;
}

.tab-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 24px 0;
}
.tab-button {
  padding: 8px 16px;
  border: 1px solid var(--baseline);
  border-radius: 999px;
  background: var(--surface-1);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.88rem;
}
.tab-button.active {
  background: var(--button-bg);
  border-color: var(--button-bg);
  color: var(--button-text);
}

#content-area {
  padding: 14px 24px 40px;
}

.loading { color: var(--text-muted); }
#content-area > .loading { color: var(--shell-text-muted); }

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  max-width: 900px;
}
.kpi-tile {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-top: 3px solid var(--brand-dusty-pink);
  border-radius: 4px;
  padding: 16px;
}
.kpi-tile .label { color: var(--text-secondary); font-size: 0.8rem; margin-bottom: 6px; }
.kpi-tile .value {
  font-size: 1.5rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.map-box {
  width: 600px;
  height: 600px;
  max-width: 100%;
  aspect-ratio: 1 / 1;
}

.map-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.map-legend-item { display: inline-flex; align-items: center; gap: 5px; }
.map-legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.gauge-wrap {
  position: relative;
  width: 100%;
  max-width: 280px;
  height: 160px;
  margin: 0 auto;
}
.gauge-value {
  position: absolute;
  left: 50%;
  bottom: 8px;
  transform: translateX(-50%);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
}
.gauge-caption {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-top: 4px;
}

.table-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.table-toolbar h2 { margin: 0; }

.table-scroll {
  overflow-x: auto;
}

#users-table-wrap, #logs-table-wrap {
  overflow-x: auto;
}

table.sortable th {
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}
table.sortable th:hover { color: var(--brand-brown); }

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 16px;
  margin-top: 16px;
}
.summary-grid.compact {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}
.summary-grid.compact .chart-wrap { padding: 12px 14px; }
.summary-grid.compact h2 { font-size: 0.88rem; margin: 0 0 8px; }

.install-comparison-card table.data-table { font-size: 0.78rem; }
.install-comparison-card table.data-table th,
.install-comparison-card table.data-table td { padding: 4px 6px; line-height: 1.5; }

.chart-box-sm {
  width: 100%;
  height: 150px;
}

.chart-box-md {
  width: 100%;
  height: 280px;
}

.table-scroll-limited {
  max-height: 260px;
  overflow-y: auto;
  margin-top: 12px;
}

.hint {
  color: var(--text-muted);
  font-size: 0.78rem;
  margin: -4px 0 10px;
}

.map-box-sm {
  width: 100%;
  height: 220px;
  max-width: 100%;
  aspect-ratio: auto;
}

.donut-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.donut-row .chart-box-sm { flex: 0 0 130px; height: 130px; }

.donut-other {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--gridline);
}
.donut-other-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.donut-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.76rem;
  color: var(--text-secondary);
  flex: 1;
  min-width: 0;
}
.donut-legend li {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 2px 0;
  white-space: nowrap;
}
.donut-legend-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 90px;
}
.donut-legend b { color: var(--text-primary); font-weight: 600; flex-shrink: 0; }

.weekly-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  margin-top: 8px;
}
.weekly-legend li { padding: 0; white-space: nowrap; }

.chart-wrap {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  max-width: 900px;
}
.chart-wrap h2 { font-size: 1rem; margin: 0 0 14px; color: var(--text-primary); }
canvas { max-width: 100%; }

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}
.split-layout .chart-wrap { max-width: none; }
.split-right {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 200px;
}
.split-right .placeholder {
  color: var(--text-muted);
  font-size: 0.88rem;
  text-align: center;
  padding: 60px 10px;
  margin: 0;
}
@media (max-width: 900px) {
  .split-layout { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .topbar { flex-wrap: wrap; gap: 8px; padding: 10px 14px; }
  .user-info { gap: 8px; font-size: 0.82rem; }

  /* 좁은 화면: 필터를 접었다 펼 수 있는 버튼 + 2칸 그리드로 보여준다 */
  .filter-bar {
    flex-direction: column;
    align-items: stretch;
    padding: 10px 14px;
    gap: 10px;
  }
  .filter-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--shell-border);
    border-radius: 6px;
    background: transparent;
    color: var(--shell-text);
    font-size: 0.88rem;
    cursor: pointer;
  }
  .filter-toggle-icon { transition: transform 0.15s ease; }
  #filter-bar.collapsed .filter-toggle-icon { transform: rotate(-90deg); }
  #filter-bar.collapsed .filter-items-wrap { display: none; }

  .filter-items-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 10px;
    overflow-x: visible;
    width: 100%;
  }
  .filter-item { min-width: 0; }
  .filter-item input, .filter-item select {
    width: 100%;
    min-width: 0;
  }
  .filter-actions {
    grid-column: 1 / -1;
    margin-left: 0;
  }

  /* 탭 메뉴도 같은 이유로 가로 스크롤 대신 줄바꿈 */
  .tab-bar {
    flex-wrap: wrap;
    overflow-x: visible;
    padding: 10px 14px 0;
  }
  .tab-button { padding: 7px 12px; font-size: 0.82rem; }

  #content-area, #admin-content { padding: 12px 14px 32px; }
  .chart-wrap { padding: 14px 16px; }
}

table.data-table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.85rem;
  margin-top: 12px;
}
table.data-table th, table.data-table td {
  text-align: right;
  padding: 6px 10px;
  border-bottom: 1px solid var(--gridline);
  font-variant-numeric: tabular-nums;
}
table.data-table th:first-child, table.data-table td:first-child { text-align: left; font-variant-numeric: initial; }
table.data-table tfoot td { font-weight: 700; border-top: 2px solid var(--gridline); border-bottom: none; }

.table-scroll-limited table.data-table th {
  position: sticky;
  top: 0;
  background: var(--surface-1);
}

.admin-form {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: flex-end;
}
.admin-form label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.admin-form input[type="text"], .admin-form input[type="password"] {
  padding: 7px 9px;
  border: 1px solid var(--baseline);
  border-radius: 6px;
  background: var(--surface-1);
  color: var(--text-primary);
}
.admin-form .checkbox-label { flex-direction: row; align-items: center; gap: 6px; }
.admin-form button {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  background: var(--button-bg);
  color: var(--button-text);
  cursor: pointer;
}
.admin-form button:hover { background: var(--button-bg-hover); }
.form-msg { font-size: 0.82rem; color: var(--text-muted); }
.form-msg.error { color: var(--series-8); }
.form-msg.success { color: var(--series-3); }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
}
.badge.active { background: color-mix(in srgb, var(--series-3) 20%, transparent); color: var(--series-3); }
.badge.inactive { background: color-mix(in srgb, var(--series-8) 20%, transparent); color: var(--series-8); }

.small-button {
  padding: 4px 10px;
  border: 1px solid var(--baseline);
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.78rem;
}
.small-button:hover { border-color: var(--brand-brown); color: var(--brand-brown); }