:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --panel2: #f0f3f9;
  --line: #e2e8f2;
  --text: #1a2236;
  --muted: #64718c;
  --up: #15a34a;
  --down: #dc2626;
  --accent: #2563eb;
  --shadow: 0 6px 22px rgba(31, 45, 75, 0.08);
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(37, 99, 235, 0.07), transparent),
    radial-gradient(1000px 500px at -5% 0%, rgba(16, 185, 129, 0.06), transparent),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 14px; }
.logo {
  font-size: 22px;
  color: var(--accent);
  background: rgba(37, 99, 235, 0.1);
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 12px;
}
.topbar h1 { font-size: 19px; margin: 0; letter-spacing: 0.2px; }
.subtitle { margin: 2px 0 0; color: var(--muted); font-size: 13px; }

.controls { display: flex; align-items: flex-end; gap: 14px; }
.ctl { display: flex; flex-direction: column; gap: 5px; font-size: 12px; color: var(--muted); }
.money {
  display: flex; align-items: center; gap: 4px;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 6px 10px;
}
.money span { color: var(--muted); }
.money input {
  background: transparent; border: 0; color: var(--text);
  font-size: 15px; width: 110px; outline: none;
}
.btn {
  background: var(--panel); color: var(--text);
  border: 1px solid var(--line); border-radius: 10px;
  padding: 9px 14px; cursor: pointer; font-size: 13px;
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover { background: var(--panel2); border-color: var(--accent); }

/* ---------- panels (one per ETF, side by side) ---------- */
#panels {
  padding: 22px 28px 10px;
  display: grid;
  /* As many equal columns as fit (3 on wide screens, 2 on laptops, 1 on mobile). */
  grid-template-columns: repeat(auto-fit, minmax(440px, 1fr));
  gap: 24px;
  align-items: start;
}
@media (max-width: 900px) { #panels { grid-template-columns: 1fr; } }

/* Quick-jump nav: hidden on desktop, a sticky row of ETF chips on small
   screens. Tapping a chip smooth-scrolls to that ETF's panel (see app.js). */
.etf-nav { display: none; }
@media (max-width: 900px) {
  .etf-nav {
    display: flex;
    gap: 8px;
    position: sticky;
    top: 0;
    z-index: 50;
    padding: 10px 16px;
    background: rgba(255, 255, 255, 0.92);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--line);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .etf-chip {
    flex: 1 1 0;
    text-align: center;
    white-space: nowrap;
    padding: 9px 12px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 0.02em;
    text-decoration: none;
    color: #fff;
    background: var(--chip, #3b82f6);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
  }
  .etf-chip:active { transform: translateY(1px); }
}
.panel { scroll-margin-top: 76px; min-width: 0; }
.panel-head {
  display: flex; justify-content: space-between; align-items: flex-end;
  gap: 16px; margin-bottom: 14px; flex-wrap: wrap;
  border-left: 5px solid var(--accent);
  padding: 4px 0 6px 16px;
}
.phead-left .sym-row { display: flex; align-items: center; gap: 10px; }
.sym { font-size: 26px; font-weight: 800; letter-spacing: 0.5px; }
.full-name { margin: 4px 0 2px; font-size: 16px; font-weight: 600; }
.sub { margin: 0; font-size: 12.5px; }
.tag {
  display: inline-block; font-size: 11px; letter-spacing: 0.4px;
  padding: 3px 9px; border-radius: 999px; border: 1px solid var(--line);
  color: var(--muted); background: var(--panel2);
}
.phead-right { text-align: right; }
.big-move { font-size: 34px; font-weight: 800; line-height: 1; }
.pl-line { font-size: 13px; margin-top: 6px; }

.up { color: var(--up); }
.down { color: var(--down); }
.muted { color: var(--muted); }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 14px; font-size: 15px; }
.hint, .card h3 .hint { color: var(--muted); font-weight: 400; font-size: 12px; }

.chart-wrap { position: relative; height: 380px; }
.chart-wrap.contrib { height: 540px; }

/* table */
.table-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.filter {
  background: var(--panel2); border: 1px solid var(--line); border-radius: 9px;
  padding: 7px 11px; color: var(--text); font-size: 13px; outline: none; min-width: 220px;
}
.filter:focus { border-color: var(--accent); }
.table-scroll { overflow-x: auto; max-height: 460px; overflow-y: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  text-align: left; color: var(--muted); font-weight: 600; font-size: 12px;
  padding: 9px 12px; border-bottom: 1px solid var(--line); cursor: pointer;
  white-space: nowrap; user-select: none; position: sticky; top: 0;
  background: var(--panel);
}
thead th.num { text-align: right; }
thead th:hover { color: var(--text); }
tbody td { padding: 9px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
tbody td.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr:hover { background: var(--panel2); }
.tk { font-weight: 700; }
.nm { color: var(--muted); max-width: 260px; overflow: hidden; text-overflow: ellipsis; }
.wbar {
  display: inline-block; height: 8px; border-radius: 4px;
  background: var(--accent); vertical-align: middle; margin-right: 7px;
}

/* status / footer */
.status {
  position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%);
  background: var(--panel); border: 1px solid var(--line); color: var(--muted);
  padding: 8px 16px; border-radius: 999px; font-size: 12px; box-shadow: var(--shadow);
  opacity: 0; transition: opacity 0.25s; pointer-events: none;
}
.status.show { opacity: 1; }
.foot { text-align: center; color: var(--muted); font-size: 11px; padding: 24px; }

.spinner {
  display: inline-block; width: 14px; height: 14px; margin-right: 7px;
  border: 2px solid var(--line); border-top-color: var(--accent);
  border-radius: 50%; animation: spin 0.7s linear infinite; vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.panel.loading { opacity: 0.5; }