:root {
  --bg: #eef2f1;
  --surface: #ffffff;
  --surface-2: #f5f8f7;
  --ink: #16262a;
  --muted: #5a6d70;
  --line: #dde4e2;
  --accent: #0c8b78;
  --accent-ink: #075e51;
  --accent-bg: #e3f3ef;
  --shadow: 0 1px 2px rgba(16,38,42,.05), 0 8px 24px rgba(16,38,42,.06);
  --font: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Code", "Consolas", ui-monospace, "SF Mono", Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1a1c;
    --surface: #152528;
    --surface-2: #1a2d31;
    --ink: #e7f0ee;
    --muted: #8fa4a4;
    --line: #26393c;
    --accent: #2fc9b0;
    --accent-ink: #83e7d7;
    --accent-bg: #133029;
    --shadow: 0 1px 2px rgba(0,0,0,.25), 0 10px 30px rgba(0,0,0,.4);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2 { margin: 0; letter-spacing: -0.01em; }

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  padding: 16px clamp(16px, 4vw, 40px);
}

.brand { display: flex; align-items: center; gap: 14px; max-width: 1100px; margin: 0 auto; }

.logo {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  font-size: 20px;
  border-radius: 11px;
  flex: none;
}

.brand h1 { font-size: clamp(19px, 3vw, 24px); font-weight: 750; }
.sub { margin: 0; color: var(--muted); font-size: 13px; }

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: clamp(18px, 3.5vw, 32px) clamp(16px, 4vw, 40px);
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2.5vw, 24px);
}

/* stat cards */
.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat .label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--muted);
  font-weight: 600;
}

.stat .value {
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.stat.accent .value { color: var(--accent-ink); }

.stat .value.text { font-size: clamp(18px, 2.6vw, 22px); }

/* panels */
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 20px clamp(16px, 2.5vw, 24px);
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.panel-head h2 { font-size: 17px; font-weight: 700; }

.chart-holder { position: relative; height: clamp(240px, 40vw, 340px); }

#search {
  font-family: var(--font);
  font-size: 14px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface-2);
  color: var(--ink);
  min-width: 220px;
  flex: 1 1 220px;
  max-width: 320px;
}

#search:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }

/* table */
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }

thead th {
  text-align: left;
  padding: 11px 14px;
  background: var(--surface-2);
  color: var(--muted);
  font-weight: 600;
  font-size: 12.5px;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
}

thead th:hover { color: var(--accent-ink); }

thead th::after { content: "\2195"; opacity: .25; margin-left: 6px; font-size: 11px; }
thead th.sort-asc::after { content: "\2191"; opacity: 1; color: var(--accent); }
thead th.sort-desc::after { content: "\2193"; opacity: 1; color: var(--accent); }

tbody td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--surface-2); }

.num { text-align: right; font-variant-numeric: tabular-nums; }

td.product { font-weight: 600; }

.empty { text-align: center; color: var(--muted); padding: 22px; font-size: 14px; }

.foot {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px clamp(16px, 4vw, 40px) 40px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 12.5px;
}

/* responsive */
@media (max-width: 780px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 440px) {
  .cards { grid-template-columns: 1fr; }
  .panel-head { flex-direction: column; align-items: stretch; }
  #search { max-width: none; flex: 0 0 auto; width: 100%; }
}

/* entrance + hover polish */
@keyframes fadeup { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.stat, .panel { animation: fadeup .55s ease both; }
.cards .stat:nth-child(2) { animation-delay: .06s; }
.cards .stat:nth-child(3) { animation-delay: .12s; }
.cards .stat:nth-child(4) { animation-delay: .18s; }
.panel { animation-delay: .12s; }
.stat { transition: transform .2s ease, box-shadow .25s ease, border-color .2s ease; }
.stat:hover { transform: translateY(-3px); border-color: var(--accent); }
.stat.accent { position: relative; overflow: hidden; }
.stat.accent::after { content: ""; position: absolute; inset: 0 auto 0 0; width: 3px; background: var(--accent); }
.panel { transition: box-shadow .25s ease; }

@media (prefers-reduced-motion: reduce) {
  .stat, .panel { animation: none; }
  .stat:hover { transform: none; }
}