/* ==========================================================================
   intrapattern — design tokens & shared chrome
   Palette validated for colour-vision deficiency against both surfaces.
   Light: #009182 / #d64545 / #3572e3   Dark: #0f9b87 / #e05a5a / #5b8def
   ========================================================================== */

:root {
  /* ---- type ---- */
  --mono: ui-monospace, "Cascadia Code", "JetBrains Mono", "SF Mono", Consolas, monospace;
  --sans: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;

  --fs-display: clamp(36px, 6.2vw, 66px);
  --fs-h2:      clamp(23px, 3.1vw, 33px);
  --fs-h3:      18px;
  --fs-body:    16px;
  --fs-sm:      14px;
  --fs-label:   11px;

  /* ---- space ---- */
  --s1: 4px;  --s2: 8px;  --s3: 12px; --s4: 16px;
  --s5: 24px; --s6: 32px; --s7: 48px; --s8: 72px; --s9: 104px;

  --radius: 10px;
  --radius-sm: 6px;
  --rail: 1180px;

  /* ---- colour: light ---- */
  --bg:      #eef1f0;
  --panel:   #fcfcfb;
  --panel-2: #f4f6f5;
  --ink:     #1a2420;
  --ink-2:   #5c6b66;
  --ink-3:   #8b9a94;
  --line:    #d9e0dd;
  --grid:    #e6ebe9;
  --up:      #009182;
  --down:    #d64545;
  --accent:  #3572e3;
  --vwap:    #a06b1f;
  --trend:   #8a978f;
  --shadow:  0 1px 2px rgba(26, 36, 32, .05), 0 8px 28px rgba(26, 36, 32, .06);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:      #0d1312;
    --panel:   #161d1b;
    --panel-2: #1b2422;
    --ink:     #e4eae7;
    --ink-2:   #8fa09a;
    --ink-3:   #64756f;
    --line:    #28332f;
    --grid:    #1f2926;
    --up:      #0f9b87;
    --down:    #e05a5a;
    --accent:  #5b8def;
    --vwap:    #c9973f;
    --trend:   #5d6b65;
    --shadow:  0 1px 2px rgba(0, 0, 0, .3), 0 8px 28px rgba(0, 0, 0, .35);
  }
}

:root[data-theme="dark"] {
  --bg:      #0d1312;
  --panel:   #161d1b;
  --panel-2: #1b2422;
  --ink:     #e4eae7;
  --ink-2:   #8fa09a;
  --ink-3:   #64756f;
  --line:    #28332f;
  --grid:    #1f2926;
  --up:      #0f9b87;
  --down:    #e05a5a;
  --accent:  #5b8def;
  --vwap:    #c9973f;
  --trend:   #5d6b65;
  --shadow:  0 1px 2px rgba(0, 0, 0, .3), 0 8px 28px rgba(0, 0, 0, .35);
}

/* ==========================================================================
   base
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

html {
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: var(--fs-body)/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

h1, h2, h3 { text-wrap: balance; margin: 0; }
p { margin: 0; }
img, svg { max-width: 100%; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 3px;
}

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 99;
  background: var(--ink); color: var(--bg); padding: 10px 18px;
  font: 600 var(--fs-sm)/1 var(--mono);
}
.skip:focus { left: var(--s4); top: var(--s4); }

/* shared utility voices ---------------------------------------------------- */

.label {
  font: 500 var(--fs-label)/1.4 var(--mono);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.tnum { font-variant-numeric: tabular-nums; }

.rail { max-width: var(--rail); margin: 0 auto; padding: 0 var(--s5); }

/* side badge — long / short ------------------------------------------------ */

.side {
  font: 500 10px/1 var(--mono);
  letter-spacing: .14em;
  padding: 4px 7px;
  border-radius: 4px;
  white-space: nowrap;
  color: var(--ink);
}
.side.long  { background: color-mix(in srgb, var(--up) 13%, var(--panel));   border: 1px solid color-mix(in srgb, var(--up) 45%, var(--panel)); }
.side.short { background: color-mix(in srgb, var(--down) 13%, var(--panel)); border: 1px solid color-mix(in srgb, var(--down) 45%, var(--panel)); }

/* ==========================================================================
   masthead — a terminal status strip
   ========================================================================== */

.masthead {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.masthead .rail {
  display: flex; align-items: center; gap: var(--s5);
  height: 56px;
}

.wordmark {
  display: inline-flex; align-items: center; gap: 9px;
  font: 700 16px/1 var(--mono);
  letter-spacing: -.02em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}
.wordmark .dim { color: var(--ink-3); font-weight: 500; }
.wordmark svg { display: block; flex: none; }

.mast-nav {
  display: flex; align-items: center; gap: var(--s2);
  margin-left: auto;
}
.mast-nav a {
  font: 500 12px/1 var(--mono);
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-2); text-decoration: none;
  padding: 8px 10px; border-radius: var(--radius-sm);
}
.mast-nav a:hover { color: var(--ink); background: var(--panel-2); }
.mast-nav a[aria-current="page"] { color: var(--ink); }

@media (max-width: 620px) {
  .mast-nav a.hide-sm { display: none; }
}

.theme-toggle {
  display: grid; place-items: center;
  width: 32px; height: 32px; flex: none;
  background: transparent; border: 1px solid var(--line);
  border-radius: var(--radius-sm); color: var(--ink-2); cursor: pointer;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink-3); }
.theme-toggle svg { display: block; }
.theme-toggle .moon { display: none; }
:root[data-theme="dark"] .theme-toggle .moon { display: block; }
:root[data-theme="dark"] .theme-toggle .sun  { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .moon { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .sun  { display: none; }
}

/* primary action ----------------------------------------------------------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 500 12px/1 var(--mono);
  letter-spacing: .12em; text-transform: uppercase;
  padding: 13px 24px; border-radius: 8px;
  border: 1px solid transparent; cursor: pointer;
  text-decoration: none; white-space: nowrap;
  transition: transform .12s ease, background-color .12s ease, border-color .12s ease;
}
.btn:active { transform: translateY(1px); }

.btn-solid { background: var(--ink); color: var(--bg); }
.btn-solid:hover { background: color-mix(in srgb, var(--ink) 85%, var(--accent)); }

.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink-3); background: var(--panel-2); }

/* ==========================================================================
   chart surface — shared by landing & trainer
   ========================================================================== */

.chartwrap {
  position: relative;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.chartwrap svg { display: block; width: 100%; height: auto; }

.tt {
  position: absolute; z-index: 3; display: none;
  pointer-events: none; white-space: nowrap;
  font: 11px/1.55 var(--mono);
  font-variant-numeric: tabular-nums;
  background: var(--panel); color: var(--ink);
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 6px 9px; box-shadow: var(--shadow);
}
.tt .u { color: var(--up); }
.tt .d { color: var(--down); }

/* ==========================================================================
   landing — hero
   ========================================================================== */

.hero { padding: var(--s8) 0 var(--s7); }

.hero .rail {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  gap: var(--s7);
  align-items: center;
}

.hero h1 {
  font: 800 var(--fs-display)/1.04 var(--sans);
  letter-spacing: -.032em;
  margin: var(--s3) 0 var(--s4);
}
.hero h1 em {
  font-style: normal;
  color: var(--up);
}

.hero .lede {
  color: var(--ink-2);
  font-size: 17px;
  max-width: 46ch;
  margin-bottom: var(--s5);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: var(--s3); }

.ticker {
  display: flex; flex-wrap: wrap; gap: var(--s2) var(--s5);
  margin-top: var(--s6); padding-top: var(--s4);
  border-top: 1px solid var(--line);
}
.ticker div {
  font: 500 var(--fs-label)/1.4 var(--mono);
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-3);
}
.ticker b {
  display: block; font-size: 21px; font-weight: 700;
  letter-spacing: -.01em; color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.hero-figure {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero-figure header {
  display: flex; align-items: center; gap: var(--s3);
  padding: 10px var(--s4);
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
}
.hero-figure header .t {
  font: 600 12px/1 var(--mono); letter-spacing: .04em; color: var(--ink);
}
.hero-figure header .live {
  margin-left: auto;
  font: 500 10px/1 var(--mono); letter-spacing: .14em; color: var(--ink-3);
}
.hero-figure .chartwrap { border: 0; border-radius: 0; background: var(--panel); }

@media (max-width: 900px) {
  .hero { padding: var(--s7) 0 var(--s6); }
  .hero .rail { grid-template-columns: minmax(0, 1fr); gap: var(--s6); }
}

/* ==========================================================================
   landing — sections
   ========================================================================== */

.section { padding: var(--s8) 0; border-top: 1px solid var(--line); }

.section-head { margin-bottom: var(--s6); max-width: 62ch; }
.section-head h2 {
  font: 700 var(--fs-h2)/1.15 var(--sans);
  letter-spacing: -.022em;
  margin: var(--s2) 0 var(--s3);
}
.section-head p { color: var(--ink-2); }

/* small multiples of every setup ------------------------------------------ */

.grid-setups {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(238px, 1fr));
  gap: var(--s4);
}

.setup-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--s3);
  display: flex; flex-direction: column; gap: 10px;
}
.setup-card .cap {
  display: flex; align-items: center; gap: var(--s2);
}
.setup-card .cap h3 {
  font: 600 13.5px/1.25 var(--mono);
  letter-spacing: -.01em; margin: 0;
}
.setup-card .cap .side { margin-left: auto; }
.setup-card .tell {
  font-size: 12.5px; line-height: 1.45; color: var(--ink-2);
  margin: 0;
}

/* how it works — two modes ------------------------------------------------- */

.modes { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s4); }
@media (max-width: 780px) { .modes { grid-template-columns: 1fr; } }

.mode {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--s5);
  display: flex; flex-direction: column; gap: var(--s3);
}
.mode h3 {
  font: 700 20px/1.2 var(--sans); letter-spacing: -.02em; margin: 0;
}
.mode p { color: var(--ink-2); font-size: var(--fs-sm); }
.mode ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 9px;
}
.mode li {
  position: relative; padding-left: 20px;
  font-size: var(--fs-sm); color: var(--ink-2);
}
.mode li::before {
  content: ""; position: absolute; left: 0; top: 8px;
  width: 9px; height: 2px; border-radius: 1px; background: var(--accent);
}
.mode.drill li::before { background: var(--up); }

/* the thesis strip --------------------------------------------------------- */

.thesis {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--up);
  border-radius: var(--radius);
  padding: var(--s5) var(--s6);
  display: grid; gap: var(--s3);
}
.thesis h2 {
  font: 700 var(--fs-h3)/1.35 var(--sans); letter-spacing: -.015em; margin: 0;
}
.thesis p { color: var(--ink-2); max-width: 68ch; font-size: var(--fs-sm); }

/* closing call ------------------------------------------------------------- */

.closer { text-align: center; display: grid; gap: var(--s4); justify-items: center; }
.closer h2 {
  font: 800 var(--fs-h2)/1.1 var(--sans); letter-spacing: -.028em; margin: 0;
}
.closer p { color: var(--ink-2); max-width: 50ch; }

/* ==========================================================================
   footer
   ========================================================================== */

.site-foot {
  border-top: 1px solid var(--line);
  padding: var(--s6) 0 var(--s7);
  margin-top: var(--s7);
}
.site-foot .rail {
  display: flex; flex-wrap: wrap; gap: var(--s4) var(--s6);
  align-items: flex-start;
}
.site-foot .disclaimer {
  font-size: 12.5px; line-height: 1.6; color: var(--ink-3);
  max-width: 62ch; margin: 0;
}
.site-foot nav {
  margin-left: auto; display: flex; gap: var(--s4);
}
.site-foot nav a {
  font: 500 var(--fs-label)/1 var(--mono);
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-2); text-decoration: none;
}
.site-foot nav a:hover { color: var(--ink); }

/* ==========================================================================
   404
   ========================================================================== */

.stub {
  min-height: 62vh;
  display: grid; place-content: center; justify-items: center;
  text-align: center; gap: var(--s4); padding: var(--s8) var(--s5);
}
.stub h1 {
  font: 800 var(--fs-h2)/1.1 var(--sans); letter-spacing: -.03em;
}
.stub p { color: var(--ink-2); max-width: 44ch; }