/* Bidotter — marketing site
   Clean, corporate, light. One owned accent (cobalt). Display: Space Grotesk,
   Body: Inter, Data/labels: IBM Plex Mono. Signature: the "auction rail" —
   supply -> exchange -> demand, the path a bid travels. */

:root {
  --ink:        #0a1024;   /* near-navy black, primary text */
  --ink-2:      #3a4257;   /* secondary text */
  --ink-3:      #6b7386;   /* muted / captions */
  --line:       #e5e8f0;   /* hairlines, borders */
  --line-2:     #eef1f7;   /* faint fills */
  --paper:      #ffffff;   /* base background */
  --paper-2:    #f6f8fc;   /* tinted sections */
  --cobalt:     #1b4dff;   /* the one accent */
  --cobalt-ink: #123ccc;   /* accent, darkened for text on white */
  --cobalt-wash:#eef2ff;   /* accent tint fill */

  --maxw: 1160px;
  --gutter: 24px;
  --radius: 14px;

  --font-display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---- utility: mono eyebrow / labels ---------------------------------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cobalt-ink);
  margin: 0 0 18px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--cobalt);
  box-shadow: 0 0 0 4px var(--cobalt-wash);
}

/* ---- buttons --------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15.5px;
  padding: 13px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--cobalt); color: #fff; }
.btn-primary:hover { background: var(--cobalt-ink); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-1px); }
.btn .arrow { transition: transform .15s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---- header ---------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.82);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 21px;
  letter-spacing: -0.02em;
  color: var(--ink);
  display: inline-flex;
  align-items: baseline;
}
.brand .dot { color: var(--cobalt); }
.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}
.nav a.navlink {
  font-size: 15px;
  color: var(--ink-2);
  font-weight: 500;
  transition: color .15s ease;
}
.nav a.navlink:hover { color: var(--ink); }
.nav-cta { display: inline-flex; align-items: center; gap: 18px; }

.nav-toggle {
  display: none;
  background: none; border: 1px solid var(--line);
  border-radius: 9px; width: 42px; height: 40px;
  cursor: pointer; align-items: center; justify-content: center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 18px; height: 2px;
  background: var(--ink); position: relative; transition: .2s;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after  { position: absolute; top: 6px; }

/* ---- hero ------------------------------------------------------------ */
.hero { padding: 88px 0 64px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(38px, 5.4vw, 62px);
  line-height: 1.03;
  letter-spacing: -0.03em;
  margin: 0 0 22px;
  color: var(--ink);
}
.hero h1 em { font-style: normal; color: var(--cobalt); }
.hero .lead {
  font-size: 19px;
  color: var(--ink-2);
  max-width: 30em;
  margin: 0 0 34px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note {
  margin-top: 26px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--ink-3);
}

/* ---- signature: auction rail ----------------------------------------- */
.rail {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 120% at 50% 0%, var(--paper) 40%, var(--paper-2) 100%);
  padding: 28px 26px;
  box-shadow: 0 1px 0 var(--line-2), 0 24px 48px -32px rgba(10,16,36,0.28);
}
.rail-head {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-3);
  margin-bottom: 22px;
}
.rail-live { display: inline-flex; align-items: center; gap: 7px; color: var(--cobalt-ink); }
.rail-live .pulse {
  width: 7px; height: 7px; border-radius: 50%; background: var(--cobalt);
  animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 0 0 var(--cobalt-wash); }
  50%     { box-shadow: 0 0 0 5px rgba(27,77,255,0.06); }
}
.rail-cols {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 14px; align-items: stretch;
}
.rail-side { display: flex; flex-direction: column; gap: 10px; }
.rail-side .cap {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-3); margin-bottom: 2px;
}
.node {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 11px 13px;
  font-size: 13.5px;
  color: var(--ink-2);
  display: flex; align-items: center; gap: 9px;
}
.node .glyph {
  width: 8px; height: 8px; border-radius: 2px; background: var(--line);
  flex: none;
}
.rail-side.demand .node { justify-content: flex-end; text-align: right; }
.rail-side.demand .node .glyph { order: 2; background: var(--cobalt); opacity: .5; }

.rail-core {
  align-self: center;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 0 4px;
}
.rail-core .chip {
  font-family: var(--font-display); font-weight: 600; font-size: 14px;
  letter-spacing: -0.01em;
  color: #fff; background: var(--cobalt);
  border-radius: 999px; padding: 9px 15px;
  box-shadow: 0 10px 22px -10px rgba(27,77,255,0.7);
  white-space: nowrap;
}
.rail-core .track {
  position: relative; width: 2px; height: 44px;
  background: linear-gradient(var(--line), var(--cobalt-wash));
  overflow: hidden;
}
.rail-core .bid {
  position: absolute; left: -2px; width: 6px; height: 6px; border-radius: 50%;
  background: var(--cobalt);
  animation: drop 2.4s cubic-bezier(.5,0,.5,1) infinite;
}
.rail-core .bid.b2 { animation-delay: 1.2s; }
@keyframes drop { 0% { top: -6px; opacity: 0; } 15% { opacity: 1; } 85% { opacity: 1; } 100% { top: 44px; opacity: 0; } }

.rail-foot {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line);
}
.rail-foot .kv { text-align: center; }
.rail-foot .k {
  font-family: var(--font-mono); font-size: 18px; font-weight: 500; color: var(--ink);
}
.rail-foot .v {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-3);
}

/* ---- stats strip ----------------------------------------------------- */
.stats { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper-2); }
.stats .wrap {
  display: grid; grid-template-columns: repeat(4, 1fr);
  padding-block: 34px;
}
.stat { text-align: center; padding-inline: 12px; }
.stat + .stat { border-left: 1px solid var(--line); }
.stat .num {
  font-family: var(--font-display); font-weight: 600; font-size: 34px;
  letter-spacing: -0.02em; color: var(--ink); line-height: 1;
}
.stat .num small { font-size: 20px; color: var(--cobalt-ink); }
.stat .lbl {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-3); margin-top: 10px;
}

/* ---- section scaffolding -------------------------------------------- */
.section { padding: 92px 0; }
.section-head { max-width: 40rem; margin-bottom: 48px; }
.section-head h2 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(28px, 3.6vw, 40px); line-height: 1.1;
  letter-spacing: -0.025em; margin: 0 0 16px; color: var(--ink);
}
.section-head p { font-size: 18px; color: var(--ink-2); margin: 0; }

/* ---- both sides ------------------------------------------------------ */
.sides { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.side {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px; background: #fff;
}
.side.demand { background: var(--paper-2); }
.side .side-tag {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--cobalt-ink); margin-bottom: 14px;
}
.side h3 {
  font-family: var(--font-display); font-weight: 600; font-size: 23px;
  letter-spacing: -0.02em; margin: 0 0 10px;
}
.side > p { color: var(--ink-2); margin: 0 0 22px; }
.side ul { list-style: none; margin: 0; padding: 0; }
.side li {
  display: flex; gap: 12px; padding: 12px 0;
  border-top: 1px solid var(--line); color: var(--ink-2); font-size: 15.5px;
}
.side li::before {
  content: ""; flex: none; margin-top: 8px;
  width: 7px; height: 7px; border-radius: 2px;
  background: var(--cobalt); opacity: .55;
}

/* ---- features -------------------------------------------------------- */
.features-sec { background: var(--paper-2); border-top: 1px solid var(--line); }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.feature { background: #fff; padding: 30px 28px; }
.feature .ficon {
  width: 34px; height: 34px; border-radius: 9px;
  background: var(--cobalt-wash); color: var(--cobalt-ink);
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.feature h3 {
  font-family: var(--font-display); font-weight: 600; font-size: 18px;
  letter-spacing: -0.01em; margin: 0 0 8px;
}
.feature p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* ---- cta band -------------------------------------------------------- */
.cta-band { padding: 40px 0 96px; }
.cta-inner {
  border-radius: 20px;
  background: linear-gradient(135deg, #0a1024 0%, #16205a 55%, #1b4dff 140%);
  color: #fff;
  padding: 60px 56px;
  display: flex; align-items: center; justify-content: space-between; gap: 32px;
  overflow: hidden;
  position: relative;
}
.cta-inner::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(60% 120% at 100% 0%, rgba(27,77,255,0.5), transparent 60%);
  pointer-events: none;
}
.cta-inner .txt { position: relative; z-index: 1; }
.cta-inner h2 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(26px, 3.4vw, 38px); letter-spacing: -0.025em;
  margin: 0 0 10px; line-height: 1.08;
}
.cta-inner p { margin: 0; color: rgba(255,255,255,0.72); font-size: 17px; max-width: 34em; }
.cta-inner .btn-primary { background: #fff; color: var(--ink); position: relative; z-index: 1; }
.cta-inner .btn-primary:hover { background: #eef2ff; }

/* ---- footer ---------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0; }
.site-footer .wrap {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  flex-wrap: wrap;
}
.site-footer .brand { font-size: 18px; }
.foot-meta { font-family: var(--font-mono); font-size: 12px; color: var(--ink-3); letter-spacing: 0.02em; }
.foot-links { display: flex; gap: 22px; }
.foot-links a { font-size: 14px; color: var(--ink-2); }
.foot-links a:hover { color: var(--ink); }

/* ---- contact page ---------------------------------------------------- */
.contact-hero { padding: 84px 0 40px; }
.contact-hero h1 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(36px, 5vw, 56px); letter-spacing: -0.03em; line-height: 1.04;
  margin: 0 0 18px;
}
.contact-hero h1 em { font-style: normal; color: var(--cobalt); }
.contact-hero .lead { font-size: 19px; color: var(--ink-2); max-width: 32em; margin: 0; }

.contact-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 24px; padding-bottom: 96px; }
.contact-card {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 38px; background: #fff;
}
.contact-card .side-tag {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--cobalt-ink); margin-bottom: 16px;
}
.contact-card h2 {
  font-family: var(--font-display); font-weight: 600; font-size: 24px;
  letter-spacing: -0.02em; margin: 0 0 8px;
}
.contact-card > p { color: var(--ink-2); margin: 0 0 26px; }

.email-row {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  border: 1px solid var(--line); border-radius: 12px;
  background: var(--paper-2); padding: 16px 18px;
}
.email-row a.email {
  font-family: var(--font-mono); font-size: clamp(16px, 2.4vw, 22px);
  color: var(--ink); letter-spacing: -0.01em; font-weight: 500;
}
.email-row a.email:hover { color: var(--cobalt-ink); }
.copy-btn {
  margin-left: auto;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.06em;
  border: 1px solid var(--line); background: #fff; color: var(--ink-2);
  border-radius: 999px; padding: 8px 14px; cursor: pointer; transition: .15s;
}
.copy-btn:hover { border-color: var(--ink); color: var(--ink); }
.copy-btn.copied { border-color: var(--cobalt); color: var(--cobalt-ink); background: var(--cobalt-wash); }

.contact-aside {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px; background: var(--paper-2);
}
.contact-aside h3 {
  font-family: var(--font-display); font-weight: 600; font-size: 17px; margin: 0 0 16px;
}
.contact-aside dl { margin: 0; }
.contact-aside dt {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-3); margin-top: 18px;
}
.contact-aside dt:first-child { margin-top: 0; }
.contact-aside dd { margin: 4px 0 0; color: var(--ink-2); font-size: 15.5px; }

/* ---- responsive ------------------------------------------------------ */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .sides, .contact-grid { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr 1fr; }
  .stats .wrap { grid-template-columns: 1fr 1fr; gap: 28px 0; }
  .stat:nth-child(3) { border-left: none; }
  .stat:nth-child(odd) { border-left: none; }
  .stat:nth-child(even) { border-left: 1px solid var(--line); }
  .cta-inner { flex-direction: column; align-items: flex-start; padding: 44px 32px; }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  .nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-header.open .nav {
    display: flex; position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 8px 0;
  }
  .site-header.open .nav a.navlink { padding: 13px var(--gutter); }
  .site-header.open .nav .nav-cta { padding: 12px var(--gutter); }
  .section { padding: 64px 0; }
  .features { grid-template-columns: 1fr; }
  .contact-card, .side { padding: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; transition: none !important; }
}

:focus-visible { outline: 2px solid var(--cobalt); outline-offset: 3px; border-radius: 4px; }