/* MaiCoach.io — tokens + base + Home
   Derived from the v1 design canvas. Values match docs/.../design_handoff_maicoach_v1/README.md
   § Design Tokens. The canvas itself is a fixed-1440px design reference; this is the
   responsive implementation. */

:root {
  /* colour */
  --bg:         #1B2A41;
  --surface:    #22334D;
  --surface-hi: #2B3E5C;
  --canvas:     #101B2B;
  --cyan:       #0ED4F9;   /* THE interactive accent: buttons, links, progress, focus */
  --green:      #00EF70;   /* semantic "good" + the wordmark's "ai". Nothing else */
  --text:       #F2F6FA;
  --text-2:     #DCE6F1;
  --text-3:     #C9D6E5;
  --muted:      #8FA3BC;
  --line:       rgba(143,163,188,0.22);

  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --gutter: 48px;
  --rhythm: 92px;
  --maxw:   1000px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { color: #7FE9FF; }
button { font-family: inherit; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; border-radius: 4px; }
::selection { background: rgba(14,212,249,0.28); }

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* Hairline that fades over its last 48px, per the design tokens */
.rule {
  height: 1px; border: 0; margin: 0;
  background: linear-gradient(90deg,
    rgba(143,163,188,0) 0,
    rgba(143,163,188,.22) 48px,
    rgba(143,163,188,.22) calc(100% - 48px),
    rgba(143,163,188,0) 100%);
}

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  padding: 12px 18px; background: var(--surface); color: var(--text);
  border: 1px solid var(--cyan); border-radius: 8px;
}
.skip-link:focus { left: 16px; top: 16px; }

/* ---------------------------------------------------------------- header */

.site-header {
  position: sticky; top: 0; z-index: 30;
  min-height: 76px;
  padding: 0 var(--gutter);
  display: flex; align-items: center; gap: 36px;
  background: rgba(27,42,65,0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.wordmark {
  font: 800 23px/1 var(--font-heading);
  letter-spacing: -0.02em;
  color: var(--text);
  white-space: nowrap;
}
.wordmark .ai { color: var(--green); }

.nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav a {
  padding: 10px 14px; border-radius: 7px;
  color: var(--text-2);
  font: 500 14px/1 var(--font-body);
  transition: background 200ms ease-out, color 200ms ease-out;
}
.nav a:hover { background: rgba(255,255,255,0.07); color: var(--text); }
.nav a[aria-current="page"] {
  background: rgba(255,255,255,0.09);
  font-weight: 600; color: var(--text);
}
/* Items that will take dropdowns once those pages exist */
.nav .pending {
  color: var(--muted);
  display: inline-flex; align-items: center; gap: 7px;
  cursor: default;
}
.nav .pending:hover { background: rgba(255,255,255,0.04); color: var(--muted); }
.nav .chev { font-size: 9px; transition: transform 200ms ease-out; }

.header-spacer { flex: 1 1 auto; }

.btn {
  display: inline-block;
  padding: 12px 20px; border-radius: 8px;
  border: 1px solid var(--cyan); background: transparent;
  color: var(--cyan); font: 600 14px/1 var(--font-body);
  white-space: nowrap; cursor: pointer;
  transition: background 200ms ease-out;
}
.btn:hover { background: rgba(14,212,249,0.12); color: var(--cyan); }

.btn-lg {
  padding: 17px 28px; font-size: 17px; font-weight: 700;
  background: rgba(14,212,249,0.06);
}
.btn-lg:hover { background: rgba(14,212,249,0.16); }

/* ------------------------------------------------------------------ hero */

.section { padding: var(--rhythm) var(--gutter); }
.wrap { max-width: 1240px; margin: 0 auto; }
.wrap-narrow { max-width: var(--maxw); margin: 0 auto; }

.hero { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.hero-copy { max-width: 680px; }

.kicker {
  font: 600 11px/1 var(--font-body);
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 22px;
}

h1 {
  font: 800 clamp(40px, 5.4vw, 72px)/1.02 var(--font-heading);
  letter-spacing: -0.035em;
  text-wrap: balance;
  margin: 0 0 24px;
}

.lead {
  font: 400 19px/1.6 var(--font-body);
  color: var(--text-3); max-width: 560px; margin: 0 0 32px;
}

.cta-row { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.cta-note { font: 400 14px/1.5 var(--font-body); color: var(--muted); }

/* video slot — poster/placeholder until the overlay loop lands */
.media-slot {
  aspect-ratio: 4 / 3; border-radius: 12px;
  border: 1px solid var(--line);
  position: relative; overflow: hidden;
  background:
    radial-gradient(circle at 55% 40%, rgba(14,212,249,0.10), rgba(16,27,43,0.95) 72%),
    repeating-linear-gradient(135deg, rgba(43,62,92,0.5) 0 8px, rgba(34,51,77,0.5) 8px 16px);
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  padding: 28px; text-align: center; gap: 8px;
}
.media-slot p { margin: 0; font: 400 13px/1.6 var(--font-body); color: var(--muted); max-width: 300px; }
.media-meta {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 12px 16px; display: flex; align-items: center; gap: 12px;
  font: 400 11px/1 var(--font-mono); color: var(--muted);
  border-top: 1px solid rgba(143,163,188,0.18);
  background: rgba(16,27,43,0.5);
}
.media-scrub { flex: 1 1 auto; height: 2px; background: rgba(143,163,188,0.25); border-radius: 1px; }
.media-scrub span { display: block; width: 62%; height: 100%; background: var(--cyan); border-radius: 1px; }

/* --------------------------------------------------------------- problem */

.problem p {
  font: 600 clamp(24px, 2.6vw, 34px)/1.35 var(--font-heading);
  letter-spacing: -0.02em; text-wrap: pretty;
  margin: 0 0 6px; max-width: 900px;
}
.problem .dim { color: var(--muted); }

/* ---------------------------------------------------------- how it works */

.h2 {
  font: 600 12px/1 var(--font-body);
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 28px;
}

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 10px; padding: 26px;
  display: flex; flex-direction: column; gap: 12px; min-height: 220px;
}
.step .num { font: 500 13px/1 var(--font-mono); color: var(--cyan); }
.step h3 { font: 700 22px/1.25 var(--font-heading); margin: 0; }
.step p { font: 400 15px/1.6 var(--font-body); color: var(--text-3); margin: 0; flex: 1 1 auto; }
.step .meta { font: 400 12px/1 var(--font-mono); color: var(--muted); }

/* Card 3 must read as unmistakably unavailable */
.step.soon {
  background: repeating-linear-gradient(135deg,
    rgba(34,51,77,0.75) 0 8px, rgba(27,42,65,0.75) 8px 16px);
  border-style: dashed; border-color: rgba(143,163,188,0.4);
}
.step.soon h3 { color: var(--muted); }
.tag {
  align-self: flex-start;
  padding: 5px 10px; border-radius: 5px;
  border: 1px solid rgba(143,163,188,0.45);
  font: 600 10px/1 var(--font-body); letter-spacing: .16em;
  text-transform: uppercase; color: var(--muted);
}

/* -------------------------------------------------------------- evidence */

.evidence {
  display: flex; flex-wrap: wrap;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.evidence div {
  flex: 1 1 0; min-width: 170px; padding: 26px 24px;
  border-left: 1px solid var(--line);
}
.evidence div:first-child { border-left: 0; }
.evidence .n {
  display: block; font: 600 34px/1.1 var(--font-mono);
  font-variant-numeric: tabular-nums; color: var(--text); margin-bottom: 8px;
}
.evidence .l { font: 500 12px/1.4 var(--font-body); color: var(--muted); }

/* --------------------------------------------------------------- for eng */

.for-eng p { font: 400 15px/1.8 var(--font-body); margin: 0; }
.for-eng .inert { color: var(--muted); }
.for-eng .paren { font: 400 13px/1 var(--font-mono); color: var(--muted); }

/* ---------------------------------------------------------------- footer */

.site-footer { padding: 36px var(--gutter) 56px; }
.footer-grid { display: flex; gap: 64px; flex-wrap: wrap; justify-content: space-between; }
.footer-about { max-width: 560px; }
.footer-about p {
  font: 400 14px/1.65 var(--font-body); color: var(--muted); margin: 14px 0 0;
}
.footer-links { display: flex; gap: 56px; flex-wrap: wrap; }
.footer-links h4 {
  font: 600 11px/1 var(--font-body); letter-spacing: .16em;
  text-transform: uppercase; color: var(--muted); margin: 0 0 14px;
}
.footer-links li { list-style: none; margin-bottom: 10px; }
.footer-links ul { margin: 0; padding: 0; }
.footer-links a { font: 500 14px/1 var(--font-body); color: var(--text-2); }
.footer-links a:hover { color: var(--cyan); }
.footer-links .inert { font: 500 14px/1 var(--font-body); color: var(--muted); }

/* ----------------------------------------------------------- responsive */

@media (max-width: 1040px) {
  .hero { grid-template-columns: 1fr; gap: 40px; }
  .steps { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  :root { --gutter: 22px; --rhythm: 60px; }
  .site-header { gap: 14px; flex-wrap: wrap; padding-top: 12px; padding-bottom: 12px; }
  .nav { order: 3; width: 100%; }
  .nav .pending { display: none; }   /* pages that don't exist yet */
  .header-spacer { display: none; }
  .evidence div { border-left: 0; border-top: 1px solid var(--line); }
  .evidence div:first-child { border-top: 0; }
  .footer-grid { gap: 36px; }
}

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