:root {
  --bg: #f4f1ea;
  --card: #fffdf8;
  --ink: #1f2430;
  --muted: #667085;
  --line: #e6e0d4;
  --accent: #1f6feb;
  --high: #0f7b3a;
  --watch: #9a6700;
  --low: #8a3b12;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "IBM Plex Sans", "Noto Sans SC", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.45;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1100px; margin: 0 auto; padding: 24px 16px 48px; }
.wrap.wide { max-width: 1180px; }
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  width: min(420px, 100%);
}

h1 { font-size: 22px; margin: 0 0 8px; }
.sub { color: var(--muted); margin: 0 0 20px; font-size: 14px; }

label { display: block; font-size: 13px; margin: 0 0 6px; color: var(--muted); }
input[type="text"], input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 15px;
  margin-bottom: 14px;
}

button, .btn {
  appearance: none;
  border: 0;
  background: var(--accent);
  color: white;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 15px;
  cursor: pointer;
}
button.ghost {
  background: transparent;
  color: var(--muted);
  padding: 8px 10px;
}

.error {
  background: #fde7e7;
  color: #8a1f1f;
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 14px;
  font-size: 14px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.meta { color: var(--muted); font-size: 13px; }
.meta strong { color: var(--ink); font-weight: 600; }

.filters { display: flex; gap: 8px; margin: 0 0 16px; flex-wrap: wrap; }
.filters a {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
}
.filters a.active { background: var(--ink); color: white; border-color: var(--ink); }
.filters a.market-link { background: #eef2f8; border-color: #c5d0e0; color: var(--accent); }

table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); font-size: 14px; }
th { color: var(--muted); font-weight: 600; font-size: 12px; letter-spacing: 0.02em; }
td.title { max-width: 420px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.asin { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
.num { font-variant-numeric: tabular-nums; }

.tier, .flag {
  display: inline-block;
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 12px;
  margin: 0 4px 4px 0;
}
.tier-high { background: #e4f7ea; color: var(--high); }
.tier-watch { background: #fff4d6; color: var(--watch); }
.tier-low { background: #fbe8dc; color: var(--low); }
.flag { background: #eef2f8; color: #344054; }
.flag-rising { background: #e4f7ea; color: var(--high); }
.flag-declining { background: #fde7e7; color: #8a1f1f; }
.flag-price_drop_clearance { background: #fde7e7; color: #8a1f1f; }
.muted { color: var(--muted); }
.foot { margin-top: 12px; color: var(--muted); font-size: 13px; }
.empty { padding: 32px; text-align: center; color: var(--muted); }

.crumb { margin: 0 0 8px; font-size: 13px; color: var(--muted); }
.top-actions { display: flex; gap: 12px; align-items: flex-start; }
.btn { display: inline-block; }
h2 { font-size: 18px; margin: 28px 0 10px; }
.hint { color: var(--muted); font-size: 13px; margin: 0 0 12px; }
.profile-hero { display: grid; grid-template-columns: 180px 1fr; gap: 20px; align-items: start; }
.hero-img { width: 180px; height: 180px; object-fit: contain; background: #fff; border: 1px solid var(--line); border-radius: 12px; }
.hero-img.empty { display: grid; place-items: center; color: var(--muted); }
.facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px 16px; margin: 0; }
.facts .span { grid-column: 1 / -1; }
.facts dt { font-size: 12px; color: var(--muted); }
.facts dd { margin: 2px 0 0; }
.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px; }
.metrics article { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
.metrics h3 { margin: 0; font-size: 12px; color: var(--muted); font-weight: 600; }
.metrics p { margin: 8px 0 0; font-size: 14px; }
.chart-head { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: center; }
.chart-grid { display: grid; gap: 18px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }

@media (max-width: 800px) {
  .profile-hero, .facts { grid-template-columns: 1fr; }
}