/* ============================================================
   NineNine — design system
   Palette: ink navy / signal cyan / paper / coral CTA
   Type: Space Grotesk (display) · Inter (body) · JetBrains Mono (utility)
   ============================================================ */

:root {
  --ink:        #0B1220;   /* deep navy near-black */
  --ink-2:      #141E33;   /* raised surfaces */
  --ink-3:      #1F2C47;   /* borders on dark */
  --paper:      #F7F6F2;   /* warm off-white */
  --paper-2:    #ECEAE3;
  --cyan:       #35E1D4;   /* signal cyan — "cited" */
  --cyan-deep:  #17A69B;
  --coral:      #FF6B54;   /* CTA */
  --coral-deep: #E8492F;
  --text:       #0B1220;
  --text-soft:  #4A5568;
  --text-invert:#EAF1F5;
  --text-invert-soft: #9FB2C4;

  --radius: 14px;
  --radius-lg: 22px;
  --maxw: 1120px;
  --ease: cubic-bezier(.22,.61,.36,1);

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,h2,h3,h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.08; letter-spacing: -0.02em; margin: 0 0 .4em; }
a { color: inherit; }
img { max-width: 100%; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--font-mono); }
.eyebrow {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--cyan-deep); font-weight: 600;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5em;
  font-family: var(--font-display); font-weight: 600; font-size: 16px;
  padding: 14px 24px; border-radius: 999px; border: 0; cursor: pointer;
  text-decoration: none; transition: transform .18s var(--ease), box-shadow .18s var(--ease), background .18s;
}
.btn-primary { background: var(--coral); color: #fff; box-shadow: 0 8px 24px -8px rgba(255,107,84,.7); }
.btn-primary:hover { background: var(--coral-deep); transform: translateY(-2px); box-shadow: 0 14px 30px -10px rgba(255,107,84,.75); }
.btn-ghost { background: transparent; color: var(--text); border: 1.5px solid var(--ink-3); }
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-2px); }
.btn-invert { background: var(--cyan); color: var(--ink); box-shadow: 0 8px 24px -8px rgba(53,225,212,.6); }
.btn-invert:hover { transform: translateY(-2px); box-shadow: 0 14px 30px -10px rgba(53,225,212,.7); }
.btn:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, button:focus-visible {
  outline: 3px solid var(--cyan-deep); outline-offset: 2px;
}

/* ---------- top nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(1.4) blur(10px);
  background: rgba(247,246,242,.82);
  border-bottom: 1px solid var(--paper-2);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { font-family: var(--font-display); font-weight: 700; font-size: 22px; letter-spacing: -.03em; text-decoration: none; color: var(--ink); display:flex; align-items:center; gap:9px; }
.brand .dot { width: 11px; height: 11px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 4px rgba(53,225,212,.25); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { text-decoration: none; color: var(--text-soft); font-weight: 500; font-size: 15px; transition: color .15s; }
.nav-links a:hover { color: var(--ink); }
.nav-toggle { display:none; background:none; border:0; font-size:26px; cursor:pointer; color: var(--ink); }

/* ---------- hero ---------- */
.hero { background: var(--ink); color: var(--text-invert); position: relative; overflow: hidden; }
.hero::before {
  content:''; position:absolute; inset:0;
  background: radial-gradient(600px 400px at 78% 12%, rgba(53,225,212,.16), transparent 60%),
              radial-gradient(500px 380px at 10% 90%, rgba(255,107,84,.10), transparent 60%);
  pointer-events:none;
}
.hero .wrap { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; padding: 92px 24px 100px; }
.hero h1 { font-size: clamp(40px, 5.4vw, 68px); color: #fff; margin-bottom: 22px; }
.hero h1 .hl { color: var(--cyan); }
.hero p.lead { font-size: 19px; color: var(--text-invert-soft); max-width: 30em; margin-bottom: 32px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.hero-note { margin-top: 22px; font-family: var(--font-mono); font-size: 13px; color: var(--text-invert-soft); }
.hero-note b { color: var(--cyan); }

/* signature: the AI answer card */
.answer-card {
  background: linear-gradient(180deg, var(--ink-2), #0F1728);
  border: 1px solid var(--ink-3);
  border-radius: var(--radius-lg);
  padding: 22px 22px 24px;
  box-shadow: 0 30px 60px -30px rgba(0,0,0,.8);
}
.answer-card .q {
  font-family: var(--font-mono); font-size: 13px; color: var(--text-invert-soft);
  border: 1px solid var(--ink-3); border-radius: 10px; padding: 12px 14px; margin-bottom: 18px;
  display:flex; gap:10px; align-items:center;
}
.answer-card .q::before { content:'❯'; color: var(--cyan); }
.answer-card .ai-label { display:flex; align-items:center; gap:8px; font-family:var(--font-mono); font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--text-invert-soft); margin-bottom:10px; }
.answer-card .ai-label .pulse { width:8px; height:8px; border-radius:50%; background:var(--cyan); box-shadow:0 0 0 0 rgba(53,225,212,.6); animation: pulse 2.4s infinite; }
@keyframes pulse { 0%{box-shadow:0 0 0 0 rgba(53,225,212,.5);} 70%{box-shadow:0 0 0 10px rgba(53,225,212,0);} 100%{box-shadow:0 0 0 0 rgba(53,225,212,0);} }
.answer-card .ans { font-size: 15.5px; color: var(--text-invert); line-height: 1.62; }
.answer-card .cite {
  margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--ink-3);
  font-family: var(--font-mono); font-size: 12.5px; color: var(--text-invert-soft);
}
.answer-card .cite .src { color: var(--cyan); }
.answer-card .cite .src::before { content:'●'; font-size:8px; vertical-align: middle; margin-right:6px; }

/* ---------- sections ---------- */
section { padding: 84px 0; }
.section-head { max-width: 40rem; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 40px); }
.section-head p { color: var(--text-soft); font-size: 17px; }

/* how it works — a real 3-step sequence, numbering earns its place */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.step { background: #fff; border: 1px solid var(--paper-2); border-radius: var(--radius); padding: 28px 24px; position: relative; }
.step .n { font-family: var(--font-mono); font-size: 13px; color: var(--cyan-deep); font-weight: 700; letter-spacing: .1em; }
.step h3 { font-size: 20px; margin-top: 10px; }
.step p { color: var(--text-soft); font-size: 15px; margin: 0; }

/* feature grid */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature { padding: 26px 22px; border-radius: var(--radius); background: #fff; border: 1px solid var(--paper-2); }
.feature .ic { width: 40px; height: 40px; border-radius: 11px; background: rgba(53,225,212,.16); display:grid; place-items:center; margin-bottom: 14px; font-size: 20px; }
.feature h3 { font-size: 18px; }
.feature p { color: var(--text-soft); font-size: 14.5px; margin: 0; }

/* price band */
.priceband { background: var(--ink); color: var(--text-invert); border-radius: var(--radius-lg); padding: 52px; display:grid; grid-template-columns: 1fr auto; gap: 40px; align-items:center; }
.priceband h2 { color:#fff; font-size: 32px; }
.priceband p { color: var(--text-invert-soft); margin: 0; max-width: 34em; }
.pricetag { text-align:center; }
.pricetag .amt { font-family: var(--font-display); font-size: 60px; font-weight: 700; color: var(--cyan); line-height: 1; }
.pricetag .sub { font-family: var(--font-mono); font-size: 12px; letter-spacing:.14em; text-transform:uppercase; color: var(--text-invert-soft); }

/* answers list */
.answer-list { display: grid; gap: 16px; }
.answer-row { display:block; text-decoration:none; background:#fff; border:1px solid var(--paper-2); border-radius: var(--radius); padding: 24px 26px; transition: border-color .15s, transform .15s var(--ease); }
.answer-row:hover { border-color: var(--cyan-deep); transform: translateY(-2px); }
.answer-row .q { font-family: var(--font-display); font-weight:600; font-size: 20px; color: var(--ink); margin-bottom: 8px; }
.answer-row .a { color: var(--text-soft); font-size: 15px; }
.answer-row .meta { font-family: var(--font-mono); font-size:12px; color: var(--cyan-deep); margin-top: 12px; }

/* reviews */
.reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.review { margin: 0; background: var(--paper); border: 1px solid var(--paper-2); border-radius: var(--radius); padding: 26px 24px; display: flex; flex-direction: column; }
.review .stars { color: #F5A623; font-size: 17px; letter-spacing: 2px; margin-bottom: 12px; }
.review blockquote { margin: 0 0 18px; font-size: 16px; line-height: 1.55; color: #202B3D; flex: 1; }
.review figcaption { display: flex; flex-direction: column; gap: 2px; border-top: 1px solid var(--paper-2); padding-top: 14px; }
.review .who { font-family: var(--font-display); font-weight: 600; font-size: 15px; }
.review .where { font-family: var(--font-mono); font-size: 12px; color: var(--text-soft); }
@media (max-width: 900px) { .reviews { grid-template-columns: 1fr; } }

/* how it works — a real 6-step sequence; numbering encodes true order */
.process { list-style:none; counter-reset:none; padding:0; margin:0; display:grid; grid-template-columns:1fr 1fr; gap:24px 40px; }
.process-step { display:flex; gap:18px; align-items:flex-start; }
.process-step .pnum { flex:0 0 auto; width:44px; height:44px; border-radius:50%; background:var(--ink); color:var(--cyan); font-family:var(--font-display); font-weight:700; font-size:19px; display:grid; place-items:center; box-shadow:0 6px 18px -8px rgba(11,18,32,.5); }
.process-step .pbody h3 { font-size:19px; margin:6px 0 6px; }
.process-step .pbody p { color:var(--text-soft); font-size:15px; margin:0; }
@media (max-width:900px){ .process { grid-template-columns:1fr; } }

/* article */
.article { max-width: 720px; margin: 0 auto; padding: 64px 24px 90px; }
.article .kicker { font-family: var(--font-mono); font-size: 12px; letter-spacing:.14em; text-transform:uppercase; color: var(--cyan-deep); }
.article h1 { font-size: clamp(30px, 4vw, 44px); margin: 12px 0 18px; }
.article .byline { font-family: var(--font-mono); font-size: 13px; color: var(--text-soft); margin-bottom: 30px; }
.article .tldr { background: var(--ink); color: var(--text-invert); border-radius: var(--radius); padding: 24px 26px; margin-bottom: 34px; }
.article .tldr .lbl { font-family: var(--font-mono); font-size:11px; letter-spacing:.16em; text-transform:uppercase; color: var(--cyan); margin-bottom: 8px; }
.article .tldr p { margin:0; font-size: 16.5px; color: #fff; }
.article .body p { font-size: 17px; color: #202B3D; margin: 0 0 20px; }

/* forms */
.form-card { background:#fff; border:1px solid var(--paper-2); border-radius: var(--radius-lg); padding: 40px; max-width: 620px; }
.field { margin-bottom: 20px; }
.field label { display:block; font-family: var(--font-display); font-weight:600; font-size: 14px; margin-bottom: 7px; }
.field input, .field textarea, .field select {
  width:100%; padding: 13px 15px; border:1.5px solid var(--paper-2); border-radius: 11px;
  font-family: var(--font-body); font-size: 15px; background: var(--paper); color: var(--text); transition: border-color .15s;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--cyan-deep); background:#fff; }
.field textarea { min-height: 120px; resize: vertical; }
.form-note { font-size: 13px; color: var(--text-soft); margin-top: 6px; }
.alert { padding: 14px 16px; border-radius: 11px; font-size: 14.5px; margin-bottom: 22px; }
.alert-error { background: #FDECEA; color: #A32619; border:1px solid #F5C6C0; }
.alert-ok { background: #E6FAF7; color: #0C6B62; border:1px solid #B6ECE5; }

/* footer */
.footer { background: var(--ink); color: var(--text-invert-soft); padding: 56px 0 40px; margin-top: 40px; }
.footer .wrap { display:grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.footer a { color: var(--text-invert-soft); text-decoration:none; display:block; margin-bottom: 8px; font-size: 14.5px; }
.footer a:hover { color: var(--cyan); }
.footer h4 { color:#fff; font-size: 14px; font-family: var(--font-mono); letter-spacing:.1em; text-transform:uppercase; margin-bottom: 14px; }
.footer .brand { color:#fff; margin-bottom: 12px; }
.footer .fine { grid-column: 1/-1; border-top:1px solid var(--ink-3); margin-top: 30px; padding-top: 22px; font-size: 13px; font-family: var(--font-mono); }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; padding: 64px 24px 72px; }
  .steps, .features { grid-template-columns: 1fr; }
  .priceband { grid-template-columns: 1fr; text-align:center; padding: 40px 28px; }
  .footer .wrap { grid-template-columns: 1fr 1fr; }
  .nav-links { position: fixed; inset: 68px 0 auto 0; background: var(--paper); flex-direction: column; align-items: flex-start; gap: 0; padding: 8px 24px 20px; border-bottom:1px solid var(--paper-2); display:none; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; width:100%; border-bottom:1px solid var(--paper-2); }
  .nav-links .btn { margin-top: 12px; }
  .nav-toggle { display:block; }
}