/* ============================================================
   Yetty — marketing site
   Positioning: visual output for terminal AI agents.
   Brand palette only. No off-brand hues.
   ============================================================ */

:root {
  /* Backgrounds */
  --bg:           #0B1014;
  --bg-lifted:    #141A1F;
  --bg-row:       #1E262C;
  --border:       #364A47;

  /* Text */
  --text-muted:     #556162;
  --text-secondary: #9FA7A8;
  --text-primary:   #E0E5E4;

  /* Accent */
  --accent-deep:   #5A8979;
  --accent:        #6BA892;
  --accent-bright: #74C5A5;

  --radius:    16px;
  --radius-sm: 12px;
  --maxw:      1140px;
  --ease:      cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -0.02em; margin: 0; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: 24px;
}

.accent { color: var(--accent-bright); }

.eyebrow {
  display: inline-block;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

/* ===================== Buttons ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s var(--ease), background .2s var(--ease),
              border-color .2s var(--ease), box-shadow .2s var(--ease), color .2s var(--ease);
  white-space: nowrap;
}
.btn--primary {
  background: var(--accent);
  color: #0B1014;
  box-shadow: 0 8px 24px -8px rgba(107, 168, 146, 0.55);
}
.btn--primary:hover {
  background: var(--accent-bright);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -10px rgba(116, 197, 165, 0.6);
}
.btn--ghost { background: transparent; color: var(--text-primary); border-color: var(--border); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent-bright); transform: translateY(-2px); }
.btn--lg { padding: 15px 30px; font-size: 16px; }

/* ===================== Nav ===================== */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11, 16, 20, 0.72);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.nav.is-scrolled { border-bottom-color: var(--border); background: rgba(11, 16, 20, 0.9); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav__brand { display: inline-flex; align-items: center; }
.nav__links { display: flex; align-items: center; gap: 30px; }
.nav__links a { font-size: 15px; font-weight: 500; color: var(--text-secondary); transition: color .2s var(--ease); }
.nav__links a:hover { color: var(--text-primary); }
.nav__cta { color: var(--text-primary) !important; }

.nav__toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 44px; height: 44px; background: transparent;
  border: 1px solid var(--border); border-radius: 12px; cursor: pointer;
}
.nav__toggle span { display: block; width: 18px; height: 2px; margin: 0 auto; background: var(--text-primary); border-radius: 2px; transition: transform .25s var(--ease), opacity .2s var(--ease); }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===================== Hero ===================== */
.hero { position: relative; padding: 72px 0 56px; overflow: hidden; }
.hero__glow {
  position: absolute; top: -260px; left: 50%;
  width: 1100px; height: 760px; transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(107, 168, 146, 0.18), rgba(11, 16, 20, 0) 72%);
  pointer-events: none;
}
.hero__inner { position: relative; display: grid; grid-template-columns: 1.04fr 1fr; gap: 52px; align-items: center; }
.hero__title { font-size: clamp(2.4rem, 5.4vw, 4rem); font-weight: 800; margin-bottom: 14px; }
.hero__sub { font-size: clamp(1.18rem, 2.5vw, 1.55rem); font-weight: 700; color: var(--accent-bright); letter-spacing: -0.01em; margin: 0 0 18px; }
.hero__lede { font-size: clamp(1.02rem, 2.1vw, 1.18rem); color: var(--text-secondary); max-width: 560px; margin: 0 0 30px; }
.hero__lede strong { color: var(--text-primary); font-weight: 600; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 26px; }
.hero__badges { display: flex; flex-wrap: wrap; gap: 20px; list-style: none; margin: 0; padding: 0; font-size: 14px; color: var(--text-muted); }
.hero__badges li { display: inline-flex; align-items: center; gap: 8px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent-bright); }

.hero__visual { position: relative; }
.hero__art { position: relative; }
.hero__art::before {
  content: ""; position: absolute; inset: -6% -6% -2% -6%;
  background: radial-gradient(closest-side, rgba(107,168,146,0.20), transparent 72%);
  filter: blur(8px); pointer-events: none;
}
.hero__art img {
  position: relative; display: block; width: 100%; height: auto;
  border-radius: var(--radius);
  -webkit-mask-image: radial-gradient(120% 120% at 50% 42%, #000 60%, transparent 96%);
          mask-image: radial-gradient(120% 120% at 50% 42%, #000 60%, transparent 96%);
  animation: float 7s ease-in-out infinite;
}

/* ===================== Terminal mockup ===================== */
.term {
  background: var(--bg-lifted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(54, 74, 71, 0.4);
  overflow: hidden;
}
.term--hero { animation: float 7s ease-in-out infinite; }
.term__bar { display: flex; align-items: center; gap: 8px; padding: 12px 16px; background: var(--bg-row); border-bottom: 1px solid var(--border); }
.term__dot { width: 11px; height: 11px; border-radius: 50%; background: var(--text-muted); }
.term__dot:nth-child(1) { background: var(--accent-deep); }
.term__title { margin-left: 10px; font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--text-muted); }
.term__body { padding: 18px 20px 20px; font-family: 'JetBrains Mono', monospace; font-size: 13.5px; }
.term__line { margin: 0 0 9px; color: var(--text-secondary); }
.term__line.muted { color: var(--text-muted); font-size: 12.5px; }
.prompt { color: var(--accent-bright); margin-right: 8px; font-weight: 700; }
.agent { color: var(--accent-bright); font-weight: 700; }
.cursor { color: var(--accent-bright); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
@keyframes float { 50% { transform: translateY(-10px); } }

/* inline figure (diagram) inside a terminal */
.term__figure {
  background: linear-gradient(180deg, rgba(30,38,44,0.55), rgba(20,26,31,0.2));
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin: 6px 0 12px;
}
.term__figure svg { width: 100%; height: auto; display: block; }
.diag rect { fill: var(--bg-row); stroke: var(--accent-deep); stroke-width: 1.5; }
.diag text { fill: var(--text-primary); font-family: 'JetBrains Mono', monospace; font-size: 11px; text-anchor: middle; }
.diag-edge line, .diag-edge path { stroke: var(--accent); stroke-width: 1.8; fill: none; marker-end: none; }
.diag-edge path { stroke-dasharray: 3 3; }
.diag-note { fill: var(--accent-bright); font-family: 'JetBrains Mono', monospace; font-size: 10px; text-anchor: middle; }

/* ===================== Capability strip ===================== */
.caps { border-block: 1px solid var(--border); background: var(--bg-lifted); }
.caps__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 26px 24px; }
.cap { display: flex; flex-direction: column; gap: 3px; padding-left: 14px; border-left: 2px solid var(--accent-deep); }
.cap__k { font-weight: 700; font-size: 15px; color: var(--text-primary); }
.cap__v { font-size: 13px; color: var(--text-muted); }

/* ===================== Sections ===================== */
.section { padding: 92px 0; }
.section--alt { background: var(--bg-lifted); border-block: 1px solid var(--border); }
.section__head { max-width: 700px; margin: 0 auto 56px; text-align: center; }
.section__head h2 { font-size: clamp(1.8rem, 3.8vw, 2.6rem); font-weight: 800; }
.section__sub { color: var(--text-secondary); margin-top: 16px; font-size: 1.05rem; }

/* ===================== Proof rows ===================== */
.proof { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; margin-bottom: 64px; }
.proof:last-child { margin-bottom: 0; }
.proof--reverse .proof__text { order: 2; }
.proof__num { font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: 14px; letter-spacing: 0.1em; color: var(--accent); display: block; margin-bottom: 12px; }
.proof__text h3 { font-size: clamp(1.4rem, 2.6vw, 1.85rem); font-weight: 700; margin-bottom: 14px; }
.proof__text p { color: var(--text-secondary); margin: 0; font-size: 1.04rem; }
.proof__text strong { color: var(--text-primary); }
.proof__visual { min-width: 0; }

/* HTML preview pane */
.preview {
  display: grid; grid-template-columns: 1fr 1fr;
  background: var(--bg-lifted); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  box-shadow: 0 40px 80px -40px rgba(0,0,0,0.8);
}
.preview__code { padding: 18px; font-family: 'JetBrains Mono', monospace; font-size: 12.5px; line-height: 1.7; background: var(--bg); border-right: 1px solid var(--border); }
.preview__code .cl { display: block; color: var(--text-secondary); white-space: pre; }
.preview__code .t { color: var(--accent-bright); font-style: normal; }
.preview__code .a { color: var(--text-primary); font-style: normal; }
.preview__code .s { color: var(--accent); font-style: normal; }
.preview__render { display: flex; flex-direction: column; background: var(--bg-row); }
.preview__chrome { display: flex; align-items: center; gap: 6px; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.preview__chrome span { width: 8px; height: 8px; border-radius: 50%; background: var(--text-muted); }
.preview__chrome em { margin-left: 8px; font-style: normal; font-size: 11px; font-family: 'JetBrains Mono', monospace; color: var(--text-muted); }
.preview__stage { flex: 1; display: grid; place-items: center; padding: 26px 18px; }
.preview__card { width: 100%; max-width: 200px; background: var(--bg-lifted); border: 1px solid var(--border); border-radius: 12px; padding: 18px; display: flex; flex-direction: column; gap: 10px; }
.preview__bar { height: 9px; border-radius: 5px; background: var(--text-muted); opacity: 0.5; }
.preview__bar--sm { width: 60%; }
.preview__btn { align-self: flex-start; background: var(--accent); color: #0B1014; border: none; border-radius: 999px; padding: 8px 16px; font-weight: 700; font-size: 13px; font-family: inherit; }

/* Ephemeral review controls */
.review { background: var(--bg); border: 1px dashed var(--accent-deep); border-radius: var(--radius-sm); padding: 16px; margin: 8px 0 4px; }
.review__q { margin: 0 0 12px; color: var(--text-primary); font-weight: 600; font-family: 'Inter', sans-serif; font-size: 14px; }
.review__actions { display: flex; flex-wrap: wrap; gap: 8px; }
.chip-btn { font-family: 'Inter', sans-serif; font-size: 12.5px; font-weight: 600; padding: 7px 14px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-secondary); background: var(--bg-row); }
.chip-btn--ok { background: var(--accent); color: #0B1014; border-color: var(--accent); }
.chip-btn--no { color: var(--text-secondary); }
.review__hint { margin: 12px 0 0; font-size: 11.5px; color: var(--text-muted); font-family: 'JetBrains Mono', monospace; }

/* ===================== Cards (engine) ===================== */
.cards { display: grid; gap: 22px; }
.cards--3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 26px; position: relative; overflow: hidden;
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.card::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: radial-gradient(420px circle at top right, rgba(107,168,146,0.10), transparent 60%);
  opacity: 0; transition: opacity .3s var(--ease); pointer-events: none;
}
.card:hover { transform: translateY(-6px); border-color: var(--accent-deep); box-shadow: 0 24px 48px -28px rgba(0,0,0,0.8); }
.card:hover::after { opacity: 1; }
.card__icon { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 14px; background: var(--bg-row); border: 1px solid var(--border); color: var(--accent-bright); margin-bottom: 20px; }
.card__icon svg { width: 26px; height: 26px; }
.card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
.card p { color: var(--text-secondary); font-size: 0.98rem; margin: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.chips span { font-family: 'JetBrains Mono', monospace; font-size: 11.5px; color: var(--text-secondary); background: var(--bg-row); border: 1px solid var(--border); border-radius: 999px; padding: 4px 10px; }

/* ===================== Platforms ===================== */
.platforms { display: flex; flex-direction: column; gap: 26px; max-width: 880px; margin: 0 auto; }
.platforms__group { display: flex; flex-direction: column; gap: 14px; }
.platforms__tier { font-family: 'JetBrains Mono', monospace; font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); text-align: center; }
.platforms__row { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 14px; }
.platform {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 22px 12px; background: var(--bg-lifted); border: 1px solid var(--border);
  border-radius: var(--radius-sm); transition: border-color .25s var(--ease), transform .25s var(--ease);
}
.platform:hover { border-color: var(--accent); transform: translateY(-4px); }
.platform__name { font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: 15px; color: var(--text-secondary); }
.platform:hover .platform__name { color: var(--accent-bright); }
.platform__status { font-size: 11.5px; color: var(--text-muted); }
.platform--ready { border-color: var(--accent-deep); }
.platform--ready .platform__name { color: var(--accent-bright); }
.platform--ready .platform__status { color: var(--accent); }

/* ===================== CTA ===================== */
.cta { position: relative; padding: 104px 0; text-align: center; overflow: hidden; }
.cta__glow { position: absolute; bottom: -300px; left: 50%; width: 1000px; height: 700px; transform: translateX(-50%); background: radial-gradient(closest-side, rgba(116,197,165,0.16), transparent 70%); pointer-events: none; }
.cta__inner { position: relative; max-width: 680px; margin: 0 auto; }
.cta h2 { font-size: clamp(2rem, 4.6vw, 3rem); font-weight: 800; margin-bottom: 16px; }
.cta p { color: var(--text-secondary); font-size: 1.1rem; margin: 0 auto 30px; max-width: 580px; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.cta__contact { font-size: 0.95rem; color: var(--text-muted); margin-top: 26px; }
.cta__contact a { color: var(--accent); border-bottom: 1px solid rgba(107,168,146,0.4); }
.cta__contact a:hover { color: var(--accent-bright); }

/* ===================== Footer ===================== */
.footer { border-top: 1px solid var(--border); background: var(--bg-lifted); padding: 40px 0; }
.footer__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; }
.footer__brand { display: flex; align-items: center; gap: 14px; }
.footer__tag { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--text-muted); margin: 0; }
.footer__links { display: flex; gap: 24px; }
.footer__links a { font-size: 14px; color: var(--text-secondary); transition: color .2s var(--ease); }
.footer__links a:hover { color: var(--accent-bright); }
.footer__copy { font-size: 13px; color: var(--text-muted); margin: 0; }

/* ===================== Reveal animation ===================== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__art img, .term--hero, .cursor { animation: none; }
  html { scroll-behavior: auto; }
}

/* ===================== Responsive ===================== */
@media (max-width: 980px) {
  .hero__inner { grid-template-columns: 1fr; gap: 40px; }
  .hero__visual { max-width: 540px; }
  .proof { grid-template-columns: 1fr; gap: 28px; margin-bottom: 52px; }
  .proof--reverse .proof__text { order: 0; }
  .cards--3 { grid-template-columns: 1fr; }
  .caps__grid { grid-template-columns: repeat(2, 1fr); gap: 22px; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .nav__links {
    position: fixed; inset: 68px 0 auto 0; flex-direction: column; align-items: stretch;
    gap: 6px; padding: 18px 24px 26px; background: var(--bg-lifted);
    border-bottom: 1px solid var(--border); transform: translateY(-130%); transition: transform .35s var(--ease);
  }
  .nav__links.is-open { transform: translateY(0); }
  .nav__links a { padding: 12px 4px; font-size: 16px; color: var(--text-primary); }
  .nav__cta { margin-top: 8px; justify-content: center; }
  .nav__toggle { display: flex; }

  .section { padding: 68px 0; }
  .preview { grid-template-columns: 1fr; }
  .preview__code { border-right: none; border-bottom: 1px solid var(--border); }
  .footer__inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 460px) {
  .container { padding-inline: 18px; }
  .caps__grid { grid-template-columns: 1fr; }
  .hero__actions .btn { flex: 1; justify-content: center; }
}