:root {
  --bg: #f1f3f9;
  --bg-accent-a: #eef2ff;
  --bg-accent-b: #f1f3f9;
  --card: #ffffff;
  --border: #e4e7ef;
  --text: #191d2b;
  --muted: #6b7280;
  --accent: #4f46e5;
  --accent-2: #7c3aed;
  --accent-hover: #4338ca;
  --accent-soft: #eef0ff;
  --ok-bg: #ecfdf5;
  --ok-text: #047857;
  --ok-border: #a7f3d0;
  --err-bg: #fef2f2;
  --err-text: #b91c1c;
  --err-border: #fecaca;
  --shadow: 0 1px 2px rgba(20, 22, 40, 0.04), 0 8px 24px rgba(20, 22, 40, 0.06);
  --shadow-hover: 0 4px 10px rgba(20, 22, 40, 0.06), 0 16px 32px rgba(20, 22, 40, 0.10);
  --danger-text: #b91c1c;
  --danger-border: #fca5a5;
  --danger-bg: #fef2f2;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1016;
    --bg-accent-a: #161a2b;
    --bg-accent-b: #0e1016;
    --card: #171b28;
    --border: #262b3d;
    --text: #eef0f8;
    --muted: #8b91a7;
    --accent: #818cf8;
    --accent-2: #a78bfa;
    --accent-hover: #9499fb;
    --accent-soft: #1e2140;
    --ok-bg: #062f22;
    --ok-text: #34d399;
    --ok-border: #0f5132;
    --err-bg: #331013;
    --err-text: #fca5a5;
    --err-border: #5c1a1f;
    --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.35);
    --shadow-hover: 0 4px 10px rgba(0,0,0,0.35), 0 16px 32px rgba(0,0,0,0.4);
    --danger-text: #fca5a5;
    --danger-border: #5c1a1f;
    --danger-bg: #2a1114;
  }
}
:root[data-theme="dark"] {
  --bg: #0e1016;
  --bg-accent-a: #161a2b;
  --bg-accent-b: #0e1016;
  --card: #171b28;
  --border: #262b3d;
  --text: #eef0f8;
  --muted: #8b91a7;
  --accent: #818cf8;
  --accent-2: #a78bfa;
  --accent-hover: #9499fb;
  --accent-soft: #1e2140;
  --ok-bg: #062f22;
  --ok-text: #34d399;
  --ok-border: #0f5132;
  --err-bg: #331013;
  --err-text: #fca5a5;
  --err-border: #5c1a1f;
  --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.35);
  --shadow-hover: 0 4px 10px rgba(0,0,0,0.35), 0 16px 32px rgba(0,0,0,0.4);
  --danger-text: #fca5a5;
  --danger-border: #5c1a1f;
  --danger-bg: #2a1114;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background:
    radial-gradient(1100px 460px at 12% -8%, var(--bg-accent-a), transparent 60%),
    var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 980px; margin: 0 auto; padding: 28px 18px 72px; }

header.top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 26px;
}
.logo {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.35);
}
.logo svg { width: 24px; height: 24px; stroke: #fff; }
h1 { font-size: 1.4rem; margin: 0; letter-spacing: -0.01em; }
.subtitle { color: var(--muted); margin: 2px 0 0; font-size: 0.92rem; }

.stats { display: flex; gap: 10px; margin-left: auto; }
.stat-pill {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 56px;
  padding: 6px 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
}
.stat-pill strong { font-size: 1.05rem; line-height: 1.1; }
.stat-pill span { font-size: 0.68rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }

/* Nav tabs */
.tabs {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.nav-user {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding-bottom: 10px;
}
.nav-user .role-badge {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--muted);
  white-space: nowrap;
}
.nav-user .role-badge strong { color: var(--text); }
.nav-user form { margin: 0; }
.nav-user .btn-logout {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 6px 12px;
  font-size: 0.78rem;
  box-shadow: none;
}
.nav-user .btn-logout:hover { filter: none; border-color: var(--danger-border); color: var(--danger-text); }

/* Language toggle */
.lang-toggle {
  display: flex;
  background: var(--accent-soft);
  border-radius: 8px;
  padding: 2px;
  gap: 2px;
}
.lang-btn {
  padding: 5px 9px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--muted);
  text-decoration: none;
  line-height: 1;
}
.lang-btn:hover { color: var(--text); }
.lang-btn.active { background: var(--card); color: var(--accent); box-shadow: var(--shadow); }

/* RTL overrides (Arabic) — most layout mirrors automatically via dir="rtl";
   only explicit physical left/right values need flipping here. */
[dir="rtl"] th,
[dir="rtl"] td {
  text-align: right;
}
[dir="rtl"] .col-actions,
[dir="rtl"] td.actions {
  text-align: left;
}
[dir="rtl"] .filter-panel {
  left: auto;
  right: 0;
}
[dir="rtl"] .legend-row {
  grid-template-columns: auto auto 1fr 12px;
}
.tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.tab svg { width: 15px; height: 15px; stroke: currentColor; }
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* Segmented control (Day/Week/Month) */
.segmented {
  display: flex;
  background: var(--accent-soft);
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
  margin-left: auto;
}
.seg-btn {
  background: transparent;
  color: var(--muted);
  border: none;
  box-shadow: none;
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}
.seg-btn:hover { filter: none; color: var(--text); }
.seg-btn.active {
  background: var(--card);
  color: var(--accent);
  box-shadow: var(--shadow);
}

.currency-picker {
  display: flex;
  align-items: center;
  gap: 8px;
}
.currency-picker-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
}
#currency-toggle .seg-btn {
  padding: 7px 10px;
  display: flex;
  align-items: center;
}
#currency-toggle .flag-icon {
  display: block;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08);
}
#currency-toggle .seg-btn.active .flag-icon {
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.15);
}
.currency-warning {
  background: var(--err-bg);
  color: var(--err-text);
  border: 1px solid var(--err-border);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.85rem;
  margin-bottom: 16px;
}

/* Filter bar (charts page) */
.filters-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.filter-dropdown { position: relative; }
.filter-btn {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
  padding: 9px 14px;
  font-size: 0.85rem;
}
.filter-btn:hover { filter: none; border-color: var(--accent); }
.filter-btn svg { width: 14px; height: 14px; stroke: var(--muted); }
.filter-btn .chevron { margin-left: 2px; transition: transform 0.15s ease; }
.filter-dropdown.open .chevron { transform: rotate(180deg); }
.filter-count {
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 999px;
}

.filter-panel {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 230px;
  max-height: 280px;
  overflow-y: auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-hover);
  padding: 10px;
  z-index: 20;
  display: none;
}
.filter-dropdown.open .filter-panel { display: block; }
.filter-panel-actions {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.filter-link {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  padding: 2px 4px;
  box-shadow: none;
}
.filter-link:hover { filter: none; text-decoration: underline; }
.filter-checklist { display: flex; flex-direction: column; gap: 1px; }
.check-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  padding: 7px 6px;
  border-radius: 8px;
  cursor: pointer;
}
.check-row:hover { background: var(--accent-soft); }
.check-row input { accent-color: var(--accent); width: 15px; height: 15px; flex-shrink: 0; }

.date-range { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.date-range label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 600;
}
.date-range input[type="date"] {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 9px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.84rem;
  font-family: inherit;
  color-scheme: light dark;
}

/* KPI tiles */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 22px;
}
.kpi-tile {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 18px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.kpi-label { font-size: 0.72rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.kpi-value { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.01em; }
.kpi-value-sm { font-size: 1rem; }

/* Chart cards */
.chart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 22px;
}
.chart-card h2 { margin-bottom: 4px; }
.chart-wrap {
  position: relative;
  width: 100%;
  height: 240px;
  margin-top: 10px;
}
.chart-wrap canvas { display: block; width: 100%; height: 100%; }

.chart-tooltip {
  position: absolute;
  display: none;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  font-size: 0.76rem;
  line-height: 1.4;
  padding: 6px 10px;
  border-radius: 8px;
  pointer-events: none;
  white-space: nowrap;
  z-index: 5;
  box-shadow: var(--shadow-hover);
}

.donut-layout {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.donut-wrap { width: 220px; height: 220px; flex-shrink: 0; margin: 0 auto; }
.legend { flex: 1; min-width: 220px; display: flex; flex-direction: column; gap: 10px; }
.legend-row {
  display: grid;
  grid-template-columns: 12px 1fr auto auto;
  align-items: center;
  gap: 10px;
  font-size: 0.86rem;
}
.legend-swatch { width: 10px; height: 10px; border-radius: 3px; }
.legend-name { font-weight: 600; }
.legend-value { color: var(--text); font-variant-numeric: tabular-nums; }
.legend-muted { color: var(--muted); }
.legend-empty { color: var(--muted); grid-template-columns: 1fr; }

.spin { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 22px;
  margin-bottom: 22px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s ease;
}
.card h2 {
  font-size: 1rem;
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.master-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  background: linear-gradient(135deg, var(--accent-soft), var(--card) 70%);
  border-color: var(--accent);
}
.master-info { display: flex; align-items: center; gap: 14px; }
.master-icon {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.3);
}
.master-icon svg { width: 20px; height: 20px; stroke: #fff; }
.master-sub { margin: 2px 0 0; font-size: 0.84rem; color: var(--muted); }

.card h2 .count {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--muted);
  background: var(--accent-soft);
  padding: 2px 9px;
  border-radius: 999px;
}

/* Shop config form */
.shop-form-row {
  display: flex;
  gap: 14px;
  align-items: flex-end;
  flex-wrap: wrap;
}
.shop-form-row label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 600;
  flex: 1;
  min-width: 160px;
}
.shop-form-row input[type="text"],
.shop-form-row input[type="password"],
.shop-form-row input[type="number"],
.shop-form-row select {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 11px;
  font-size: 0.9rem;
  background: var(--bg);
  color: var(--text);
  font-family: inherit;
}
.shop-form-row input[type="text"]:focus,
.shop-form-row input[type="password"]:focus,
.shop-form-row input[type="number"]:focus,
.shop-form-row select:focus {
  outline: none;
  border-color: var(--accent);
}
.shop-form-row select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  color-scheme: light dark;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 14px;
  padding-right: 34px;
}
[dir="rtl"] .shop-form-row select {
  background-position: left 10px center;
  padding-right: 11px;
  padding-left: 34px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .shop-form-row select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b91a7' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  }
}
:root[data-theme="dark"] .shop-form-row select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b91a7' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
}
.shop-form-actions { display: flex; gap: 8px; }

/* Flash message */
.flash {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-size: 0.9rem;
  border: 1px solid transparent;
  animation: slide-in 0.25s ease;
}
.flash svg { width: 18px; height: 18px; flex-shrink: 0; }
.flash.ok { background: var(--ok-bg); color: var(--ok-text); border-color: var(--ok-border); }
.flash.err { background: var(--err-bg); color: var(--err-text); border-color: var(--err-border); }
.flash .msg-text { flex: 1; word-break: break-word; }
.flash .dismiss {
  background: none;
  border: none;
  color: inherit;
  opacity: 0.6;
  cursor: pointer;
  padding: 0;
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: -13px -13px -13px 0;
  line-height: 0;
}
[dir="rtl"] .flash .dismiss { margin: -13px 0 -13px -13px; }
.flash .dismiss:hover { opacity: 1; }
@keyframes slide-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Upload dropzone */
.dropzone {
  position: relative;
  border: 1.5px dashed var(--border);
  border-radius: 14px;
  padding: 30px 20px;
  text-align: center;
  background: var(--accent-soft);
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
  cursor: pointer;
}
.dropzone:hover, .dropzone.drag {
  border-color: var(--accent);
  transform: translateY(-1px);
}
.dropzone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}
.dropzone .icon {
  width: 42px;
  height: 42px;
  margin: 0 auto 10px;
  border-radius: 50%;
  background: var(--card);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
}
.dropzone .icon svg { width: 20px; height: 20px; stroke: var(--accent); }
.dropzone .primary-text { font-weight: 600; font-size: 0.95rem; }
.dropzone .secondary-text { color: var(--muted); font-size: 0.82rem; margin-top: 4px; }
.dropzone .filename {
  margin-top: 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  min-height: 1.2em;
}

.upload-actions { display: flex; justify-content: flex-end; margin-top: 16px; }

button, .btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border: 1px solid transparent;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: filter 0.15s ease, transform 0.1s ease, opacity 0.15s ease;
}
button:hover, .btn:hover { filter: brightness(1.08); }
button:active, .btn:active { transform: translateY(1px); }
button:disabled { opacity: 0.6; cursor: not-allowed; filter: none; }
button svg, .btn svg { width: 15px; height: 15px; }

.btn-secondary {
  background: var(--accent-soft);
  color: var(--accent);
  box-shadow: none;
}
.btn-secondary:hover { filter: none; background: var(--accent-soft); opacity: 0.85; }
.btn-danger {
  background: transparent;
  color: var(--danger-text);
  border-color: var(--danger-border);
  box-shadow: none;
}
.btn-danger:hover { background: var(--danger-bg); filter: none; }
.btn-danger.confirm-armed {
  background: var(--danger-text);
  color: #fff;
  border-color: var(--danger-text);
}
.btn-danger.confirm-armed:hover { background: var(--danger-text); }

/* File table -> responsive card rows */
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; }
tbody tr { transition: background 0.12s ease; }
tbody tr:hover { background: var(--accent-soft); }
tr:last-child td { border-bottom: none; }
td.actions { display: flex; gap: 8px; justify-content: flex-end; flex-wrap: wrap; }
.col-actions { text-align: right; }
.file-name { font-weight: 600; word-break: break-all; }
.file-meta { color: var(--muted); }

.empty {
  color: var(--muted);
  text-align: center;
  padding: 26px 10px;
  font-size: 0.88rem;
}
.empty svg { width: 30px; height: 30px; stroke: var(--muted); margin-bottom: 8px; opacity: 0.7; }

footer.foot {
  text-align: center;
  color: var(--muted);
  font-size: 0.78rem;
  margin-top: 28px;
}

/* Mobile responsive: collapse tables into stacked cards */
@media (max-width: 640px) {
  .wrap { padding: 18px 12px 56px; }
  header.top { flex-wrap: wrap; }
  .stats { margin-left: 0; width: 100%; }
  .stat-pill { flex: 1; }
  .card { padding: 16px; border-radius: 14px; }
  h1 { font-size: 1.2rem; }

  table, thead, tbody, th, td, tr { display: block; }
  thead { display: none; }
  tbody tr {
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 10px;
    padding: 10px 12px;
  }
  tbody tr:last-child { margin-bottom: 0; }
  td { border-bottom: none; padding: 5px 0; }
  td::before {
    content: attr(data-label);
    display: block;
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--muted);
    margin-bottom: 1px;
  }
  td.actions { justify-content: flex-start; padding-top: 10px; }
  td.actions::before { content: none; }

  .master-card { flex-direction: column; align-items: stretch; text-align: center; }
  .master-info { flex-direction: column; text-align: center; }
  .master-card .btn { justify-content: center; }

  .segmented { margin-left: 0; width: 100%; }
  .seg-btn { flex: 1; text-align: center; }
  .currency-picker { width: 100%; flex-wrap: wrap; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .chart-grid { grid-template-columns: 1fr; }
  .chart-wrap { height: 200px; }
  .donut-layout { flex-direction: column; }
  .donut-wrap { width: 180px; height: 180px; }
  .tabs { overflow-x: auto; }

  .filters-bar { flex-direction: column; align-items: stretch; }
  .filter-dropdown, .filter-btn { width: 100%; }
  .filter-btn { justify-content: space-between; }
  .filter-panel { left: 0; right: 0; min-width: 0; }
  .date-range { width: 100%; justify-content: space-between; }
  .date-range label { flex: 1; }
  .date-range input[type="date"] { width: 100%; }
  #reset-filters { width: 100%; justify-content: center; }

  .shop-form-row { flex-direction: column; align-items: stretch; }
  .shop-form-actions { justify-content: stretch; }
  .shop-form-actions .btn, .shop-form-actions button { flex: 1; justify-content: center; }
}

@media (max-width: 900px) and (min-width: 641px) {
  .chart-grid { grid-template-columns: 1fr; }
}