:root {
  --bg: #0e1420;
  --panel: #151d2c;
  --panel-2: #1b2538;
  --line: #27344d;
  --text: #e6ecf5;
  --muted: #9aa6bd;
  --cyan: #47c6f0;
  --up: #3ddc97;
  --down: #ff7a7a;
  --font: "DIN Alternate", "DIN Next", Bahnschrift, "D-DIN", "Roboto Condensed", system-ui, sans-serif;
  --gutter: clamp(12px, 2.5vw, 28px);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 1rem/1.5 var(--font); font-variant-numeric: tabular-nums; }
[hidden] { display: none !important; }
a { color: var(--cyan); text-underline-offset: 0.2em; }
h1, h2, h3 { margin: 0; font-weight: 700; line-height: 1.15; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }
.skip { position: absolute; left: var(--gutter); top: -80px; z-index: 30; background: var(--cyan); color: var(--bg); padding: 0.6rem 1rem; font-weight: 700; }
.skip:focus { top: 10px; }

/* Top bar */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.6rem 1rem;
  padding: 10px var(--gutter); background: rgba(14, 20, 32, 0.96); border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 0.55rem; color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.15rem; letter-spacing: 0.02em; }
.brand svg { width: 30px; height: 30px; }
.topnav ul { display: flex; gap: 1rem; margin: 0; padding: 0; list-style: none; }
.topnav a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: 0.9rem; letter-spacing: 0.04em; }
.topnav a:hover { color: var(--text); }
.toolbar { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 36px; padding: 0.4rem 0.8rem;
  border-radius: 7px; border: 1px solid var(--line); background: var(--panel); color: var(--text);
  font: 600 0.9rem/1 var(--font); letter-spacing: 0.02em; cursor: pointer; white-space: nowrap;
}
.btn:hover { border-color: var(--cyan); }
.btn-primary { background: var(--cyan); border-color: var(--cyan); color: #06202b; }
.btn-primary:hover { background: #7fd9f6; border-color: #7fd9f6; }
.btn-danger { color: var(--down); }
.btn-danger:hover { border-color: var(--down); }
.btn-small { min-height: 32px; font-size: 0.85rem; }

main { padding: var(--gutter); max-width: 1400px; margin: 0 auto; }
main section, #detail { scroll-margin-top: 120px; }

.intro { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 1rem 2rem; align-items: start; padding: 0.75rem 0 1.25rem; }
.intro h1 { font-size: clamp(1.5rem, 3vw, 2.1rem); letter-spacing: 0.01em; margin-bottom: 0.4rem; }
.intro p { color: var(--muted); max-width: 70ch; }
.how { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 0.7rem 1rem; }
.how summary { cursor: pointer; font-weight: 700; color: var(--cyan); }
.how ol { margin: 0.6rem 0 0.2rem; padding-left: 1.2rem; color: var(--muted); font-size: 0.95rem; display: grid; gap: 0.25rem; }

.demo-banner { background: rgba(71, 198, 240, 0.1); border: 1px dashed var(--cyan); color: var(--text); padding: 0.55rem 0.9rem; border-radius: 8px; margin-bottom: 1rem; font-size: 0.95rem; }

.kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.75rem; margin-bottom: 0.75rem; }
.kpi { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 0.8rem 1rem; min-width: 0; }
.kpi-label { color: var(--muted); font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; }
.kpi-value { font-size: clamp(1.3rem, 2.6vw, 1.9rem); font-weight: 700; margin-top: 0.15rem; overflow-wrap: anywhere; }
.kpi-value small { font-size: 0.6em; color: var(--muted); font-weight: 600; margin-left: 0.3rem; }

.grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 0.75rem; align-items: start; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; min-width: 0; }
.panel-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.6rem; padding: 0.9rem 1rem; border-bottom: 1px solid var(--line); }
.panel-head h2 { font-size: 1.1rem; letter-spacing: 0.04em; text-transform: uppercase; }
.filters { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.filters button { border: 1px solid var(--line); background: transparent; color: var(--muted); border-radius: 999px; padding: 0.25rem 0.7rem; font: 600 0.85rem/1.4 var(--font); cursor: pointer; }
.filters button[aria-pressed="true"] { background: var(--panel-2); color: var(--text); border-color: var(--cyan); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 0.6rem 0.8rem; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
thead th { color: var(--muted); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 600; background: var(--panel); }
.num { text-align: right; }
.watch-table tbody tr:hover { background: var(--panel-2); }
.watch-table tbody tr.is-selected { background: var(--panel-2); box-shadow: inset 3px 0 0 var(--cyan); }
.sym { display: grid; text-align: left; background: none; border: 0; color: var(--text); font: 700 1rem/1.2 var(--font); cursor: pointer; padding: 0; }
.sym span { color: var(--muted); font-weight: 400; font-size: 0.82rem; max-width: 16ch; overflow: hidden; text-overflow: ellipsis; }
.sym::after { content: ""; position: absolute; inset: 0; }
.watch-table tbody tr { position: relative; }
.up { color: var(--up); }
.down { color: var(--down); }
.flat { color: var(--muted); }
.spark { width: 88px; height: 26px; display: block; }
.date-col { color: var(--muted); }
td.date-col { font-size: 0.9rem; }
.empty { padding: 1.5rem 1rem; color: var(--muted); }

.detail { padding: 1rem; }
.detail-empty h2 { font-size: 1.1rem; letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 0.5rem; }
.detail-empty p { color: var(--muted); }
.detail-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 0.75rem; margin-bottom: 0.75rem; }
.group-badge { display: inline-block; font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--cyan); border: 1px solid var(--line); border-radius: 999px; padding: 0.1rem 0.55rem; margin-bottom: 0.35rem; }
.group-badge:empty { display: none; }
.detail-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.d-name { color: var(--muted); }
.d-price { text-align: right; }
.d-last { font-size: clamp(1.6rem, 3.4vw, 2.4rem); font-weight: 700; }
.d-change { font-weight: 600; }

.chart { margin: 0 0 1rem; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 0.5rem; }
#chart { display: block; width: 100%; height: auto; }
#chart text { font: 600 12px var(--font); fill: var(--muted); }
#chart .msg { font-size: 15px; fill: var(--muted); }

.entry-form { display: grid; grid-template-columns: 1fr 1fr auto; gap: 0.6rem; align-items: end; margin-bottom: 1rem; }
.field label { display: block; font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.3rem; }
.field label span { text-transform: none; letter-spacing: 0; }
.field input {
  width: 100%; min-height: 38px; padding: 0.45rem 0.6rem; border-radius: 7px; border: 1px solid var(--line);
  background: var(--bg); color: var(--text); font: 600 1rem/1.2 var(--font); color-scheme: dark;
}
.field input:focus-visible { border-color: var(--cyan); outline-offset: 0; }
.entry-form .btn { min-height: 38px; }
.entries-wrap { max-height: 280px; overflow-y: auto; border: 1px solid var(--line); border-radius: 10px; margin-bottom: 1rem; }
.entries thead th { position: sticky; top: 0; }
.entries td:last-child { width: 1%; }
.icon-btn { background: none; border: 1px solid transparent; color: var(--muted); border-radius: 6px; padding: 0.2rem 0.5rem; cursor: pointer; font: 600 0.85rem var(--font); }
.icon-btn:hover { color: var(--down); border-color: var(--line); }

.status { min-height: 1.5em; margin-top: 0.75rem; color: var(--muted); }

.dialog { width: min(460px, calc(100vw - 24px)); padding: 0; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); color: var(--text); }
.dialog::backdrop { background: rgba(5, 9, 16, 0.7); }
.dialog form { padding: 1.25rem; display: grid; gap: 0.85rem; }
.dialog h2 { font-size: 1.3rem; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem; }
.form-error { color: var(--down); min-height: 1.2em; font-size: 0.95rem; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 0.5rem; }

.site-footer { max-width: 1400px; margin: 0 auto; padding: 1rem var(--gutter) 2rem; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 2rem; color: var(--muted); font-size: 0.9rem; border-top: 1px solid var(--line); }

@media (max-width: 1000px) {
  .grid { grid-template-columns: 1fr; }
  .intro { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .topbar { position: static; }
  .kpis { grid-template-columns: 1fr 1fr; }
  .toolbar .btn { flex: 1 1 auto; }
  .date-col { display: none; }
  .spark-col, .watch-table td:nth-child(4) { display: none; }
  .entry-form { grid-template-columns: 1fr 1fr; }
  .entry-form .btn { grid-column: 1 / -1; }
  .d-price { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}