:root {
  --bg: #0f2228;
  --bg-soft: #17343c;
  --line: rgba(255, 255, 255, 0.16);
  --text: #f4fbfc;
  --muted: #b4cfd6;
  --accent: #7df4d0;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  min-height: 100%;
}

body {
  font-family: "Roboto Condensed", "Arial Narrow", "Liberation Sans Narrow", "Helvetica Neue", "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(165deg, var(--bg), var(--bg-soft));
}

.stats-page {
  width: min(980px, 100% - 1rem);
  margin: 0 auto;
  padding: calc(env(safe-area-inset-top) + 0.8rem) 0 1rem;
}

.stats-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(1.3rem, 5vw, 2rem);
}

.subtitle,
.last-updated {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.3rem;
}

.back-btn {
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  padding: 0.35rem 0.55rem;
}

.stats-content {
  display: grid;
  gap: 0.7rem;
  margin-top: 0.7rem;
  padding-bottom: calc(env(safe-area-inset-bottom) + 1rem);
}

.calc-section {
  background: rgba(15, 40, 48, 0.92);
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  padding: 0.6rem;
  display: grid;
  gap: 0.6rem;
}

.calc-title {
  font-size: 1.2rem;
}

.item-grid {
  display: grid;
  gap: 0.55rem;
}

.item-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 0.75rem;
  padding: 0.55rem;
  display: grid;
  gap: 0.4rem;
}

.item-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}

.item-name {
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.05;
}

.item-count {
  color: var(--accent);
  font-size: 1.25rem;
  font-weight: 800;
  white-space: nowrap;
}

.item-count-split {
  display: flex;
  align-items: baseline;
  gap: 0.42rem;
}

.count-plus {
  color: #7df4d0;
}

.count-minus {
  color: #ff9b9b;
}

.item-sub {
  color: var(--muted);
  font-size: 0.82rem;
}

.graph-wrap {
  height: 130px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 0.6rem;
  background: rgba(0, 0, 0, 0.14);
  padding: 0.25rem;
}

.graph {
  width: 100%;
  height: 100%;
  display: block;
}

.empty {
  color: var(--muted);
  font-size: 0.92rem;
}