/* AI Grid Trader: minimal, theme-aware styles.
   Theme: follows the system unless the visitor picks light/dark (html[data-theme]). */
:root {
  --bg: #fafaf9;
  --surface: #ffffff;
  --ink: #0c0a09;
  --muted: #78716c;
  --line: #e7e5e4;
  --soft: #f5f5f4;
  --price: #d97706;
  --forecast: #a8a29e;
  --soc: #3b82f6;
  --soc-fill: rgba(59, 130, 246, 0.12);
  --charge: #16a34a;
  --discharge: #dc2626;
  --bot: #a8a29e;
  --pos: #15803d;
  --neg: #b91c1c;
  --shadow: 0 1px 2px rgba(0, 0, 0, .04);
  --radius: 16px;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #0c0c0d; --surface: #151517; --ink: #f5f5f4; --muted: #a1a1aa; --line: #27272a; --soft: #1c1c1f;
  --price: #fbbf24; --forecast: #71717a; --soc: #60a5fa; --soc-fill: rgba(96, 165, 250, 0.14);
  --charge: #22c55e; --discharge: #f87171; --bot: #71717a; --pos: #4ade80; --neg: #f87171;
  --shadow: none;
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c0c0d; --surface: #151517; --ink: #f5f5f4; --muted: #a1a1aa; --line: #27272a; --soft: #1c1c1f;
    --price: #fbbf24; --forecast: #71717a; --soc: #60a5fa; --soc-fill: rgba(96, 165, 250, 0.14);
    --charge: #22c55e; --discharge: #f87171; --bot: #71717a; --pos: #4ade80; --neg: #f87171;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 Inter, ui-sans-serif, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
  transition: background-color .2s, color .2s;
}
h1, h2, h3 { font-weight: 650; letter-spacing: -0.02em; }
a { color: inherit; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: -0.01em; white-space: nowrap; }
.mark {
  width: 28px; height: 28px; border-radius: 8px; flex: none;
  background: var(--ink); color: var(--bg);
  display: grid; place-items: center;
}
.actions { display: flex; gap: 6px; }

.btn {
  appearance: none; font: inherit; font-size: 13px; font-weight: 500;
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 7px 13px; border-radius: 999px; cursor: pointer; white-space: nowrap;
  color: var(--ink); background: var(--surface); border: 1px solid var(--line);
  transition: border-color .15s, background .15s;
}
.btn:hover { border-color: var(--muted); }
.btn-icon { width: 34px; padding: 7px 0; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn-ghost:hover { color: var(--ink); border-color: var(--line); }
.btn-primary { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.btn-primary:hover { opacity: .9; border-color: var(--ink); }
:focus-visible { outline: 2px solid var(--soc); outline-offset: 2px; }

/* ---------- Intro ---------- */
.intro { padding: 44px 0 28px; }
.eyebrow {
  display: flex; align-items: center; gap: 10px; margin: 0 0 14px;
  font-size: 12px; font-weight: 500; letter-spacing: .12em; text-transform: uppercase; color: var(--muted);
}
.live {
  display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--charge); flex: none;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--charge) 22%, transparent);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 50% { box-shadow: 0 0 0 7px color-mix(in srgb, var(--charge) 0%, transparent); } }
h1 { font-size: clamp(30px, 4.6vw, 48px); line-height: 1.06; letter-spacing: -0.035em; margin: 0; max-width: 17ch; }
.lede { color: var(--muted); max-width: 62ch; margin: 16px 0 0; font-size: 16.5px; }

/* ---------- Market chips ---------- */
.markets { display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; margin: 0 0 16px; align-items: start; }
.markets .chips:nth-child(2) { grid-column: 1; }
.chips-tools { grid-column: 2; grid-row: 1 / span 2; justify-content: flex-end; }
.chips { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.chips-label { font-size: 13px; color: var(--muted); min-width: 78px; }
.chip-row { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  appearance: none; font: inherit; font-size: 13px; font-weight: 500; cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 999px;
  color: var(--ink); background: transparent; border: 1px solid var(--line);
  transition: background .15s, color .15s, border-color .15s;
}
.chip:hover { border-color: var(--muted); }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.chip-upload { border-style: dashed; color: var(--muted); }
.chip-upload:hover { color: var(--ink); }
.chip-upload:focus-within { outline: 2px solid var(--soc); outline-offset: 2px; }
.select {
  font: inherit; font-size: 13px; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; cursor: pointer;
}

/* ---------- Cards ---------- */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.card h2 { font-size: 16px; margin: 0 0 4px; }
.note { margin: 0 0 16px; color: var(--muted); font-size: 13.5px; }

/* ---------- KPIs ---------- */
.kpis { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 20px 24px; margin-bottom: 8px; }
.kpi { min-width: 0; }
.kpi .label { font-size: 12.5px; color: var(--muted); font-weight: 500; }
.kpi .value {
  font-size: 28px; font-weight: 650; letter-spacing: -0.025em; line-height: 1.2; margin-top: 4px;
  font-variant-numeric: tabular-nums; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.kpi .sub { font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.pos { color: var(--pos); }
.neg { color: var(--neg); }

/* ---------- Chart header: legend + mode switch ---------- */
.chart-head { display: flex; align-items: center; justify-content: space-between; gap: 12px 24px; flex-wrap: wrap; margin-top: 18px; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 12px 0 4px; font-size: 12.5px; color: var(--muted); }
.chart-head .legend { margin: 0; }
.legend span { display: inline-flex; align-items: center; gap: 7px; }
.sw { display: inline-block; width: 14px; height: 2.5px; border-radius: 2px; }
.sw-area { height: 10px; border-top: 2px solid var(--soc); background: var(--soc-fill); border-radius: 2px; }
.sw-dot { border-top: 2.5px dotted var(--bot); height: 0; }
.sw-dash { border-top: 2px dashed var(--forecast); height: 0; }
.sw-dash-blue { border-top: 2px dashed var(--soc); height: 0; }
.tri { font-style: normal; font-size: 10px; line-height: 1; }

.seg { display: inline-flex; align-items: center; gap: 2px; padding: 3px; border-radius: 999px; background: var(--soft); border: 1px solid var(--line); }
.seg-label { font-size: 12px; color: var(--muted); padding: 0 8px 0 10px; }
.seg button {
  appearance: none; font: inherit; font-size: 12.5px; font-weight: 500; cursor: pointer;
  border: 0; border-radius: 999px; padding: 5px 12px; color: var(--muted); background: transparent;
}
.seg button[aria-pressed="true"] { background: var(--surface); color: var(--ink); box-shadow: 0 1px 2px rgba(0,0,0,.08); }

.chart { height: 420px; margin: 4px -6px 0; }
.chart-sm { height: 280px; }
.insight {
  margin: 12px 0 0; padding-top: 16px; border-top: 1px solid var(--line);
  color: var(--muted); font-size: 14.5px;
}
.insight b { color: var(--ink); font-weight: 600; }
.source { margin: 8px 0 0; font-size: 12px; color: var(--muted); }

/* ---------- Controls ---------- */
.controls { margin-top: 16px; }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px 28px; }
.field label { display: flex; justify-content: space-between; gap: 8px; font-size: 13px; font-weight: 500; margin-bottom: 8px; }
.field output { color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.field.disabled { opacity: .45; }

details { margin-top: 20px; }
details > summary {
  cursor: pointer; list-style: none; font-size: 13px; font-weight: 500; color: var(--muted);
  display: inline-flex; align-items: center; gap: 6px;
}
details > summary::-webkit-details-marker { display: none; }
details > summary::before { content: "+"; display: inline-block; width: 12px; font-weight: 600; }
details[open] > summary::before { content: "−"; }
details > summary:hover { color: var(--ink); }
details[open] > .grid { margin-top: 18px; }

input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 18px; margin: 0;
  background: transparent; cursor: pointer;
}
input[type="range"]:disabled { cursor: not-allowed; }
input[type="range"]::-webkit-slider-runnable-track {
  height: 4px; border-radius: 4px;
  background: linear-gradient(to right, var(--ink) var(--pct, 50%), var(--line) var(--pct, 50%));
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 16px; height: 16px; margin-top: -6px; border-radius: 50%;
  background: var(--surface); border: 2px solid var(--ink); transition: transform .1s;
}
input[type="range"]:active::-webkit-slider-thumb { transform: scale(1.15); }
input[type="range"]::-moz-range-track { height: 4px; border-radius: 4px; background: var(--line); }
input[type="range"]::-moz-range-progress { height: 4px; border-radius: 4px; background: var(--ink); }
input[type="range"]::-moz-range-thumb {
  width: 12px; height: 12px; border-radius: 50%; background: var(--surface); border: 2px solid var(--ink);
}
input[type="range"]:focus-visible { outline: none; }
input[type="range"]:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 4px color-mix(in srgb, var(--soc) 35%, transparent); }

/* ---------- Comparison ---------- */
.split { display: grid; grid-template-columns: 1.1fr 1.3fr; gap: 16px; margin-top: 16px; }
.compare { width: 100%; border-collapse: collapse; font-size: 14px; font-variant-numeric: tabular-nums; }
.compare th, .compare td { padding: 10px 0 10px 12px; border-bottom: 1px solid var(--line); text-align: right; white-space: nowrap; }
.compare th:first-child, .compare td:first-child { padding-left: 0; text-align: left; color: var(--muted); font-weight: 400; white-space: normal; }
.compare thead th { font-size: 12px; font-weight: 500; color: var(--muted); padding-top: 0; }
.compare tbody tr:last-child td { border-bottom: 0; }
.compare td.ai { font-weight: 600; }
.compare tr.total td { font-weight: 650; color: var(--ink); }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; vertical-align: 1px; }

/* ---------- How it works ---------- */
.how { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; padding: 64px 0 8px; }
.how h3 { font-size: 16px; margin: 10px 0 6px; }
.how p { margin: 0; color: var(--muted); font-size: 14.5px; }
.num { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; letter-spacing: .08em; }
.method { margin: 32px 0 56px; padding-top: 20px; border-top: 1px solid var(--line); }
.method p { color: var(--muted); max-width: 72ch; font-size: 14.5px; }
.method b { color: var(--ink); font-weight: 600; }
.formula {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 13.5px !important;
  color: var(--ink) !important; background: var(--soft); padding: 10px 14px; border-radius: 10px; display: inline-block;
}

/* ---------- Footer & toast ---------- */
footer {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding-top: 20px; padding-bottom: 40px; border-top: 1px solid var(--line);
  color: var(--muted); font-size: 13px;
}
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 16px); opacity: 0; pointer-events: none;
  background: var(--ink); color: var(--bg); padding: 10px 18px; border-radius: 999px; font-size: 13px;
  max-width: calc(100vw - 32px); text-align: center; z-index: 50;
  transition: opacity .2s, transform .2s;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- Business-case dialog ---------- */
.dialog {
  width: min(440px, calc(100vw - 32px)); padding: 24px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); color: var(--ink); box-shadow: 0 24px 60px rgba(0,0,0,.25);
}
.dialog::backdrop { background: rgba(0, 0, 0, .35); backdrop-filter: blur(2px); }
.dialog h2 { font-size: 18px; margin: 0 0 6px; }
.input { display: block; margin-bottom: 12px; }
.input span { display: block; font-size: 12.5px; font-weight: 500; color: var(--muted); margin-bottom: 5px; }
.input input {
  width: 100%; font: inherit; font-size: 14px; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px; padding: 9px 12px;
}
.input input:focus { outline: 2px solid var(--soc); outline-offset: -1px; border-color: transparent; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; }

/* ---------- Kiosk / auto-play mode ---------- */
.kiosk-banner { display: none; }
body.kiosk .kiosk-banner {
  display: flex; align-items: center; gap: 10px 20px; flex-wrap: wrap;
  margin: -4px 0 20px; padding-bottom: 16px; border-bottom: 1px solid var(--line); font-size: 14px;
}
.kb-live { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; }
.kb-market { font-weight: 600; }
.kb-time { color: var(--muted); font-variant-numeric: tabular-nums; }
.kb-profit { font-variant-numeric: tabular-nums; }
.kb-hint { margin-left: auto; color: var(--muted); font-size: 13px; }
/* Full-screen layout: header, banner, KPIs and a chart that fills the rest of the window. */
body.kiosk .intro, body.kiosk .markets, body.kiosk .controls, body.kiosk .split, body.kiosk .how,
body.kiosk .method, body.kiosk footer, body.kiosk .seg, body.kiosk .insight, body.kiosk .source { display: none !important; }
body.kiosk { min-height: 100vh; min-height: 100dvh; display: flex; flex-direction: column; }
body.kiosk .top, body.kiosk main { width: 100%; }
body.kiosk main { flex: 1; display: flex; flex-direction: column; padding-bottom: 16px; }
body.kiosk .main-card { flex: 1; display: flex; flex-direction: column; min-height: 0; }
body.kiosk .chart { flex: 1 1 auto; height: auto; min-height: 320px; }
body.kiosk #btn-play { background: var(--ink); color: var(--bg); border-color: var(--ink); }

/* ---------- Embed mode (?embed=1): just the demo, for iframes ---------- */
body.embed .top, body.embed .intro, body.embed .how, body.embed .method, body.embed footer { display: none; }
body.embed main { padding-top: 16px; padding-bottom: 16px; }
body.embed { background: transparent; }

/* ---------- Printable business case (only visible when printing) ---------- */
#report { display: none; }
@media print {
  @page { size: A4; margin: 14mm; }
  html, body { background: #fff !important; }
  body > *:not(#report) { display: none !important; }
  #report { display: block; font-size: 9.5pt; }
  #report h3 { margin: 10px 0 4px; }
  .rp-chart { max-height: 68mm; object-fit: contain; }
  .rp-kpis { margin: 8px 0; }
}
#report {
  --r-ink: #0c0a09; --r-muted: #6b6560; --r-line: #e7e5e4; --r-soft: #f5f5f4;
  color: var(--r-ink); font-size: 10.5pt; line-height: 1.45; background: #fff;
  -webkit-print-color-adjust: exact; print-color-adjust: exact;
}
.rp-head { display: flex; justify-content: space-between; align-items: flex-start; border-bottom: 2px solid var(--r-ink); padding-bottom: 10px; margin-bottom: 14px; }
.rp-brand { font-weight: 700; font-size: 10pt; letter-spacing: .02em; }
.rp-kicker { font-size: 8.5pt; text-transform: uppercase; letter-spacing: .12em; color: var(--r-muted); }
.rp-title { font-size: 19pt; font-weight: 700; letter-spacing: -0.02em; margin: 2px 0 2px; }
.rp-meta { text-align: right; font-size: 9pt; color: var(--r-muted); }
.rp-kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 12px 0; }
.rp-kpi { background: var(--r-soft); border-radius: 8px; padding: 8px 10px; }
.rp-kpi .l { font-size: 8pt; color: var(--r-muted); }
.rp-kpi .v { font-size: 15pt; font-weight: 700; letter-spacing: -0.02em; }
.rp-kpi .s { font-size: 8pt; color: var(--r-muted); }
.rp-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.rp h3, #report h3 { font-size: 10.5pt; margin: 14px 0 6px; }
.rp-table { width: 100%; border-collapse: collapse; font-size: 9pt; }
.rp-table td, .rp-table th { padding: 4px 0 4px 8px; border-bottom: 1px solid var(--r-line); text-align: right; }
.rp-table td:first-child, .rp-table th:first-child { text-align: left; padding-left: 0; color: var(--r-muted); font-weight: 400; }
.rp-table th { font-size: 8pt; color: var(--r-muted); font-weight: 600; }
.rp-chart { width: 100%; border: 1px solid var(--r-line); border-radius: 8px; margin-top: 4px; }
.rp-legend { font-size: 8pt; color: var(--r-muted); margin-top: 4px; }
.rp-notes { font-size: 8pt; color: var(--r-muted); margin-top: 12px; border-top: 1px solid var(--r-line); padding-top: 8px; }
.rp-notes li { margin-bottom: 2px; }
.rp-foot { display: flex; justify-content: space-between; font-size: 8pt; color: var(--r-muted); margin-top: 10px; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .kpis { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .btn .lbl { display: none; }
  .btn { padding: 7px 10px; }
}
@media (max-width: 880px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .how { grid-template-columns: 1fr; gap: 28px; padding-top: 48px; }
  .chart { height: 340px; }
  .markets { grid-template-columns: 1fr; }
  .chips-tools { grid-column: 1; grid-row: auto; justify-content: flex-start; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  .card { padding: 18px; }
  .grid { grid-template-columns: 1fr; }
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kpi .value { font-size: 22px; }
  .intro { padding-top: 28px; }
  .chart { height: 300px; margin: 4px -10px 0; }
  .chips-label { min-width: 0; width: 100%; }
  .brand-name { display: none; }
  .seg-label { display: none; }
  .kb-hint { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}