:root {
  color-scheme: light;
  --bg: #f8fafc;
  --panel: #ffffff;
  --ink: #111827;
  --muted: #64748b;
  --line: #d7dee8;
  --accent: #0f766e;
  --accent-soft: #ccfbf1;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  padding: 10px 12px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(248, 250, 252, 0.95);
  backdrop-filter: blur(12px);
}

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

.topbar h1 {
  font-size: 22px;
}

.topbar p,
.meta,
.empty {
  color: var(--muted);
}

.layout {
  display: grid;
  grid-template-columns: minmax(280px, 390px) minmax(0, 1fr);
  min-height: calc(100vh - 73px);
}

.list {
  border-right: 1px solid var(--line);
  background: #f1f5f9;
}

.receipt-list {
  display: grid;
  gap: 8px;
  padding: 12px;
}

.receipt-row {
  display: grid;
  gap: 5px;
  width: 100%;
  min-height: 82px;
  text-align: left;
  background: var(--panel);
}

.receipt-row.active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.receipt-row strong {
  font-size: 15px;
}

.receipt-row span {
  color: var(--muted);
  font-size: 13px;
}

.detail {
  padding: 18px;
}

.detail-card {
  display: grid;
  gap: 18px;
  max-width: 880px;
}

.summary {
  display: grid;
  gap: 6px;
}

.summary h2 {
  font-size: 24px;
}

.receipt-image {
  width: 100%;
  max-height: 62vh;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #e2e8f0;
}

.items {
  display: grid;
  gap: 8px;
}

.item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.auth-page {
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-box {
  display: grid;
  gap: 12px;
  width: min(100%, 420px);
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

@media (max-width: 760px) {
  .layout {
    display: block;
  }

  .list {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .receipt-list {
    grid-auto-flow: column;
    grid-auto-columns: minmax(230px, 78vw);
    overflow-x: auto;
  }
}