:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1c1f26;
  --muted: #6b7280;
  --border: #e3e5e9;
  --accent: #2563eb;
  --accent-bg: #eaf0fe;
  --up: #16a34a;
  --down: #dc2626;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* ── Login page ───────────────────────────────────────────────── */
.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  width: 320px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.login-card h1 { margin: 0 0 4px; font-size: 20px; }
.login-card .subtitle { margin: 0 0 20px; color: var(--muted); font-size: 14px; }
.login-card input[type="password"] {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px; margin-bottom: 12px;
}
.login-card button {
  width: 100%; padding: 10px 12px; border: none; border-radius: 8px;
  background: var(--accent); color: #fff; font-size: 14px; font-weight: 600; cursor: pointer;
}
.login-card .error { color: var(--down); font-size: 13px; margin: 0 0 12px; }

/* ── Dashboard ────────────────────────────────────────────────── */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px; background: var(--card); border-bottom: 1px solid var(--border);
}
.topbar h1 { font-size: 18px; margin: 0; }
.topnav { display: flex; align-items: center; gap: 18px; }
.topnav a { color: var(--muted); font-size: 13px; text-decoration: none; }
.topnav a:hover { color: var(--text); }
.logout-link { color: var(--muted); font-size: 13px; text-decoration: none; }
.logout-link:hover { color: var(--text); }

.controls {
  display: flex; flex-wrap: wrap; align-items: center; gap: 14px;
  padding: 16px 24px; background: var(--card); border-bottom: 1px solid var(--border);
}

.range-buttons { display: flex; gap: 6px; flex-wrap: wrap; }
.range-buttons button {
  padding: 7px 14px; border: 1px solid var(--border); background: #fff;
  border-radius: 999px; font-size: 13px; cursor: pointer; color: var(--text);
}
.range-buttons button.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.custom-range { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.custom-range input[type="date"] {
  padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px;
}
.custom-range button {
  padding: 6px 12px; border: 1px solid var(--accent); background: var(--accent-bg);
  color: var(--accent); border-radius: 6px; font-size: 13px; cursor: pointer;
}

.compare-toggle { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); cursor: pointer; }

#refreshBtn {
  margin-left: auto; padding: 7px 14px; border: 1px solid var(--border); background: #fff;
  border-radius: 8px; font-size: 13px; cursor: pointer;
}

.range-label { padding: 14px 24px 0; margin: 0; font-size: 14px; color: var(--muted); }
.status-line { padding: 2px 24px 0; margin: 0; font-size: 13px; color: var(--down); min-height: 18px; }

.table-wrap { padding: 16px 24px 40px; overflow-x: auto; }

table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; }
thead th {
  text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: 0.02em;
  color: var(--muted); padding: 10px 14px; border-bottom: 1px solid var(--border); background: #fafbfc;
}
thead th:not(:first-child):not(:nth-child(2)):not(:nth-child(3)) { text-align: right; }

tbody td { padding: 12px 14px; border-bottom: 1px solid var(--border); font-size: 14px; }
tbody td:not(:first-child):not(:nth-child(2)):not(:nth-child(3)) { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #fafbfc; }
tbody tr.account-row { cursor: pointer; }

.loading-row, .empty-row { text-align: center !important; color: var(--muted); padding: 30px !important; }

.account-name { font-weight: 600; }
.account-error { color: var(--down); font-size: 12px; display: block; margin-top: 2px; }

.delta { display: block; font-size: 11px; margin-top: 2px; font-weight: 600; }
.delta.up { color: var(--up); }
.delta.down { color: var(--down); }
.delta.flat { color: var(--muted); }

tfoot td { padding: 12px 14px; font-weight: 700; border-top: 2px solid var(--border); font-size: 14px; }
tfoot td:not(:first-child):not(:nth-child(2)):not(:nth-child(3)) { text-align: right; font-variant-numeric: tabular-nums; }
.totals-currency-line { display: block; font-weight: 400; font-size: 12px; color: var(--muted); }

/* ── View toggle (table / cards) ─────────────────────────────────── */
.view-toggle { display: flex; gap: 4px; background: #f0f1f3; padding: 3px; border-radius: 8px; }
.view-toggle button {
  padding: 6px 12px; border: none; background: transparent; border-radius: 6px;
  font-size: 13px; cursor: pointer; color: var(--muted);
}
.view-toggle button.active { background: #fff; color: var(--text); box-shadow: 0 1px 2px rgba(0,0,0,0.08); font-weight: 600; }

/* ── Card view ────────────────────────────────────────────────────── */
.cards-wrap { padding: 16px 24px 40px; }

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.kpi-card {
  --accent-hue: 221;
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-top: 4px solid hsl(var(--accent-hue) 83% 53%);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
.kpi-card:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.08); }

.kpi-card-totals {
  cursor: default;
  grid-column: 1 / -1;
  --accent-hue: 221;
  background: linear-gradient(135deg, hsl(var(--accent-hue) 83% 97%), var(--card) 60%);
}

.kpi-card-header {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: 10px; margin-bottom: 14px; flex-wrap: wrap;
}
.kpi-account-name { font-weight: 700; font-size: 15px; color: var(--text); }
.kpi-account-meta { font-size: 11px; color: var(--muted); white-space: nowrap; }

.kpi-hero {
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap;
  padding-bottom: 14px; margin-bottom: 14px; border-bottom: 1px dashed var(--border);
}
.kpi-hero-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.03em; flex-basis: 100%; }
.kpi-hero-value { font-size: 30px; font-weight: 800; color: hsl(var(--accent-hue) 70% 40%); line-height: 1; }

.kpi-mini-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 16px;
}
.kpi-mini { display: flex; flex-direction: column; gap: 2px; }
.kpi-mini-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.02em; }
.kpi-mini-value { font-size: 16px; font-weight: 700; color: var(--text); }

@media (max-width: 1000px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .cards-grid { grid-template-columns: 1fr; }
  .kpi-mini-grid { grid-template-columns: 1fr 1fr; }
}

/* ── Settings page ────────────────────────────────────────────────── */
.settings-wrap { max-width: 760px; margin: 0 auto; padding: 24px 24px 60px; }
.settings-intro { color: var(--muted); font-size: 14px; margin: 0 0 18px; }

.flash { padding: 10px 14px; border-radius: 8px; font-size: 13px; margin: 0 0 16px; }
.flash-success { background: #ecfdf3; color: var(--up); border: 1px solid #c8f0d8; }
.flash-error { background: #fef2f2; color: var(--down); border: 1px solid #fbd5d5; }

.settings-toolbar {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 10px; font-size: 13px; color: var(--muted);
}
.settings-toolbar-buttons { display: flex; gap: 8px; }
.settings-toolbar-buttons button {
  padding: 6px 12px; border: 1px solid var(--border); background: #fff;
  border-radius: 6px; font-size: 12px; cursor: pointer;
}

.account-checklist {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  max-height: 460px; overflow-y: auto; margin-bottom: 18px;
}
.account-group-header {
  padding: 8px 16px; font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--muted); background: #fafbfc; border-bottom: 1px solid var(--border);
}

.account-check-row {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 16px; border-bottom: 1px solid var(--border); cursor: pointer; font-size: 14px;
}
.account-check-row:last-child { border-bottom: none; }
.account-check-row:hover { background: #fafbfc; }
.account-check-row input { flex-shrink: 0; }
.account-check-name { font-weight: 600; flex: 1; }
.account-check-meta { color: var(--muted); font-size: 12px; }

.save-btn {
  padding: 10px 20px; border: none; border-radius: 8px;
  background: var(--accent); color: #fff; font-size: 14px; font-weight: 600; cursor: pointer;
}

@media (max-width: 720px) {
  .controls { flex-direction: column; align-items: stretch; }
  #refreshBtn { margin-left: 0; }
  .kpi-card-totals { grid-column: 1; }
}

/* ── Account detail page ─────────────────────────────────────────── */
.detail-wrap { padding: 16px 24px 60px; display: flex; flex-direction: column; gap: 16px; }

.kpi-charts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.chart-card {
  --accent-hue: 221;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px 8px; border-top: 4px solid hsl(var(--accent-hue) 83% 53%);
}
.chart-card-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; }
.chart-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.03em; }
.chart-total { font-size: 18px; font-weight: 800; color: hsl(var(--accent-hue) 70% 40%); }

/* Chart.js with responsive:true + maintainAspectRatio:false needs an
   ancestor with an EXPLICIT height, or the canvas and its container
   feed back into each other and the canvas grows without bound. */
.chart-canvas-wrap { position: relative; height: 90px; width: 100%; }
.chart-canvas-wrap canvas { max-width: 100%; }

.detail-section {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
}
.detail-section summary {
  padding: 14px 18px; font-weight: 700; font-size: 14px; cursor: pointer;
  list-style: none; display: flex; align-items: center; gap: 8px;
}
.detail-section summary::-webkit-details-marker { display: none; }
.detail-section summary::before { content: '▸'; color: var(--muted); font-size: 12px; transition: transform 0.15s; }
.detail-section[open] summary::before { transform: rotate(90deg); }
.section-count { color: var(--muted); font-weight: 400; font-size: 12px; }
.section-body { padding: 0 18px 18px; }

.detail-table-wrap { overflow-x: auto; }
.detail-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.detail-table th {
  text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: 0.02em;
  color: var(--muted); padding: 8px 10px; border-bottom: 1px solid var(--border); white-space: nowrap;
}
.detail-table td { padding: 8px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.detail-table tr:last-child td { border-bottom: none; }
.detail-table tr:hover { background: #fafbfc; }
.table-note { font-size: 12px; color: var(--muted); margin: 8px 0 0; }

.muted-tag {
  font-size: 10px; color: var(--muted); background: #f0f1f3; border-radius: 4px;
  padding: 1px 6px; margin-left: 4px; text-transform: uppercase;
}

.ad-card { border-bottom: 1px solid var(--border); padding: 14px 0; }
.ad-card:last-child { border-bottom: none; }
.ad-card-meta { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.ad-headlines { margin: 0 0 6px; padding-left: 18px; font-size: 14px; font-weight: 600; }
.ad-headlines li { margin-bottom: 2px; }
.ad-descriptions { margin: 0 0 8px; font-size: 13px; color: var(--muted); }
.ad-card-stats { display: flex; gap: 16px; font-size: 12px; color: var(--muted); }

.notice-box {
  background: #fffbeb; border: 1px solid #fde68a; color: #92400e;
  border-radius: 8px; padding: 12px 14px; font-size: 13px; margin: 0;
}

@media (max-width: 1000px) {
  .kpi-charts-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .kpi-charts-grid { grid-template-columns: 1fr; }
}

/* ── Full-page loader (account detail page) ──────────────────────── */
.page-loader {
  position: fixed; inset: 0; background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000; opacity: 1; transition: opacity 0.25s ease;
}
.page-loader.page-loader-hide { opacity: 0; pointer-events: none; }

.page-loader-inner { width: 280px; text-align: center; }

.progress-bar {
  width: 100%; height: 6px; background: var(--border);
  border-radius: 999px; overflow: hidden;
}
.progress-bar-fill {
  height: 100%; width: 0%; background: var(--accent); border-radius: 999px;
  transition: width 0.3s ease;
}
.page-loader-text { margin: 14px 0 0; font-size: 13px; color: var(--muted); }

.page-content[hidden] { display: none; }