:root {
  color-scheme: dark;
  --bg: #07111f;
  --panel: #0e1c2d;
  --panel-2: #13253a;
  --text: #eef7ff;
  --muted: #98adc2;
  --line: #243b51;
  --accent: #4fd1c5;
  --accent-2: #62a8ff;
  --warn: #f0bc61;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 12% 0, #17314b 0, var(--bg) 38%); color: var(--text); }
.topbar { min-height: 104px; padding: 22px clamp(20px, 4vw, 56px); display: grid; grid-template-columns: auto 1fr auto; gap: 20px; align-items: center; border-bottom: 1px solid var(--line); background: rgba(7, 17, 31, .84); backdrop-filter: blur(12px); }
.brand img { width: 154px; display: block; }
h1, h2, p { margin: 0; }
h1 { font-size: clamp(1.6rem, 3vw, 2.35rem); letter-spacing: -.035em; }
h2 { font-size: 1.35rem; }
.subtitle, .muted { color: var(--muted); }
.subtitle { margin-top: 5px; }
.eyebrow { color: var(--accent); font-size: .72rem; font-weight: 800; letter-spacing: .14em; }
.control-link, button { border: 1px solid var(--line); color: var(--text); background: var(--panel-2); border-radius: 10px; text-decoration: none; padding: 10px 14px; cursor: pointer; }
.control-link:hover, button:hover { border-color: var(--accent); }
main { width: min(1440px, calc(100% - 40px)); margin: 28px auto 52px; }
.filters { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.periods { display: flex; gap: 6px; }
.periods button.active { background: var(--accent-2); border-color: var(--accent-2); color: #061426; font-weight: 800; }
#refresh { background: var(--accent); color: #06201f; border-color: transparent; font-weight: 800; }
#status { color: var(--muted); padding: 10px; }
.export-menu { position: relative; }
.export-menu summary { list-style: none; border: 1px solid var(--line); color: var(--text); background: var(--panel-2); border-radius: 10px; padding: 10px 14px; cursor: pointer; }
.export-menu summary::-webkit-details-marker { display: none; }
.export-menu summary::after { content: "▾"; margin-left: 8px; color: var(--muted); }
.export-menu[open] summary { border-color: var(--accent); }
.export-actions { position: absolute; z-index: 3; top: calc(100% + 6px); left: 0; display: grid; min-width: 190px; padding: 6px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); box-shadow: 0 16px 32px rgba(0, 0, 0, .28); }
.export-actions button { border: 0; border-radius: 7px; text-align: left; background: transparent; }
.export-actions button:hover { background: var(--panel-2); }
#export-status { color: var(--accent); font-size: .85rem; }
.cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-bottom: 16px; }
.card, .panel { border: 1px solid var(--line); background: linear-gradient(155deg, rgba(19, 37, 58, .96), rgba(10, 23, 38, .96)); box-shadow: 0 18px 45px rgba(0, 0, 0, .18); }
.card { padding: 17px; border-radius: 13px; }
.card span { color: var(--muted); font-size: .8rem; }
.card strong { display: block; margin-top: 7px; font-size: 1.65rem; }
.panel { margin-top: 16px; padding: 22px; border-radius: 16px; }
.panel-heading { display: flex; justify-content: space-between; align-items: end; gap: 16px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.panel-heading h2 { margin-top: 5px; }
.panel-help { max-width: 620px; color: var(--muted); font-size: .82rem; text-align: right; }
.metric-group { margin-top: 20px; }
.metric-group + .metric-group { padding-top: 18px; border-top: 1px solid var(--line); }
.metric-group h3 { margin: 0; font-size: .95rem; }
.bar-list { margin-top: 18px; }
.bar-row { display: grid; grid-template-columns: minmax(120px, 1fr) 3fr 62px; gap: 10px; align-items: center; margin: 9px 0; font-size: .84rem; }
.bar { height: 9px; background: #20354a; border-radius: 999px; overflow: hidden; }
.bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent-2), var(--accent)); border-radius: inherit; }
.bar-value { text-align: right; font-variant-numeric: tabular-nums; }
.empty { margin-top: 34px; color: var(--muted); text-align: center; }
.bar-value small { color: var(--muted); font-size: .75rem; }
.ratio-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-top: 20px; }
.ratio-item { padding: 13px; border: 1px solid var(--line); border-radius: 10px; background: rgba(7, 17, 31, .32); }
.ratio-item span { display: block; color: var(--muted); font-size: .78rem; }
.ratio-item strong { display: block; margin-top: 6px; font-size: 1.25rem; }
.technical-details { margin-top: 16px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; color: var(--muted); }
.technical-details summary { cursor: pointer; color: var(--text); font-weight: 700; }
.technical-details p { margin-top: 12px; }
.access-message { min-height: 1px; }

@media (max-width: 900px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .topbar { grid-template-columns: auto 1fr; }
  .control-link { grid-column: 2; justify-self: start; }
}

@media (max-width: 560px) {
  main { width: min(100% - 24px, 1440px); }
  .topbar { padding: 18px 14px; }
  .brand img { width: 100px; }
  .cards { grid-template-columns: 1fr; }
  .notice { align-items: flex-start; flex-direction: column; }
  .panel { padding: 16px; }
  .panel-heading { align-items: flex-start; flex-direction: column; }
  .panel-help { text-align: left; }
  .ratio-list { grid-template-columns: 1fr; }
}