/* ============ VEWO — AI Visibility Infrastructure (Light) ============ */
:root {
  --bg: #ffffff;
  --bg-2: #f6f7fb;
  --panel: #ffffff;
  --panel-2: #f4f5fa;
  --line: rgba(16, 17, 40, 0.10);
  --line-2: rgba(16, 17, 40, 0.16);
  --text: #0e0f1a;
  --muted: #545569;
  --muted-2: #82839a;
  --v1: #7c5cff;
  --v2: #22d3ee;
  --v3: #6a3fff;            /* readable violet ink on white */
  --c-ink: #0e8fa8;         /* readable cyan ink on white   */
  --grad: linear-gradient(100deg, #6d4aff 0%, #4f7df0 48%, #0fa9c4 100%);
  --grad-soft: linear-gradient(100deg, #7c5cff, #22d3ee);
  --shadow: 0 1px 2px rgba(16, 17, 40, 0.04), 0 6px 20px rgba(16, 17, 40, 0.05);
  --shadow-hover: 0 14px 40px rgba(16, 17, 40, 0.12);
  --radius: 16px;
  --maxw: 1160px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: "Space Grotesk", "Inter", sans-serif; line-height: 1.1; letter-spacing: -0.02em; font-weight: 600; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.container.narrow { max-width: 860px; }

.grad {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* ---------- Background decor ---------- */
.bg-aura {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(60% 50% at 18% 0%, rgba(124, 92, 255, 0.10), transparent 60%),
    radial-gradient(50% 50% at 85% 6%, rgba(34, 211, 238, 0.08), transparent 60%),
    radial-gradient(55% 45% at 50% 100%, rgba(124, 92, 255, 0.06), transparent 70%);
}
.bg-grid {
  position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: 0.7;
  background-image:
    linear-gradient(rgba(16,17,40,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16,17,40,0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 18%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 50% 18%, #000 0%, transparent 72%);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; font-weight: 600; font-size: 0.95rem;
  padding: 12px 22px; border-radius: 999px; cursor: pointer;
  border: 1px solid transparent; transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
  white-space: nowrap;
}
.btn--solid { background: var(--grad); color: #fff; box-shadow: 0 8px 26px rgba(86, 84, 255, 0.28); }
.btn--solid:hover { transform: translateY(-2px); box-shadow: 0 14px 38px rgba(86, 84, 255, 0.38); }
.btn--ghost { background: #fff; color: var(--text); border-color: var(--line-2); box-shadow: var(--shadow); }
.btn--ghost:hover { border-color: var(--v3); background: rgba(124,92,255,0.05); transform: translateY(-2px); }
.btn--lg { padding: 15px 30px; font-size: 1rem; }
.btn--block { width: 100%; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  background: rgba(255,255,255,0.70); border-bottom: 1px solid transparent;
  transition: background .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.nav.scrolled { background: rgba(255,255,255,0.88); border-bottom-color: var(--line); box-shadow: 0 1px 0 rgba(16,17,40,0.03); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 92px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: "Space Grotesk", sans-serif; font-weight: 700; font-size: 1.25rem; letter-spacing: 0.04em; }
.brand__mark { width: 26px; height: 26px; display: block; object-fit: contain; }
.brand__logo { height: 72px; width: auto; display: block; mix-blend-mode: multiply; }
.footer .brand__logo { height: 66px; }
.nav__links { display: flex; gap: 30px; }
.nav__links a { color: var(--muted); font-size: 0.92rem; font-weight: 500; transition: color .15s; }
.nav__links a:hover { color: var(--text); }
.nav__cta { padding: 9px 18px; }
.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav__toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: .25s; }
.nav__mobile { display: none; flex-direction: column; gap: 6px; padding: 0 24px 18px; background: rgba(255,255,255,0.96); }
.nav__mobile a { color: var(--muted); padding: 10px 0; border-bottom: 1px solid var(--line); }
.nav__mobile a.btn { color: #fff; border: 0; margin-top: 8px; }

/* ---------- Hero ---------- */
.hero { padding: 100px 0 80px; text-align: center; }
.eyebrow {
  display: inline-block; font-size: 0.8rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--v3); font-weight: 600; padding: 7px 16px; border: 1px solid var(--line-2);
  border-radius: 999px; background: rgba(124,92,255,0.05); margin-bottom: 26px;
}
.hero__title { font-size: clamp(2.4rem, 6vw, 4.5rem); font-weight: 700; margin-bottom: 26px; }
.hero__lead { max-width: 720px; margin: 0 auto 22px; color: var(--muted); font-size: 1.12rem; }
.hero__tagline { font-size: 1.05rem; color: var(--text); margin-bottom: 36px; }
.hero__tagline strong { color: var(--text); }
.hero__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 64px; }

.surfaces { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; max-width: 920px; margin: 0 auto; }
.surface {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 16px;
  background: #fff; box-shadow: var(--shadow);
  text-align: center; transition: transform .2s, border-color .2s, box-shadow .2s;
}
.surface:hover { transform: translateY(-4px); border-color: var(--v3); box-shadow: var(--shadow-hover); }
.surface__name { display: block; font-family: "Space Grotesk"; font-weight: 600; font-size: 1.05rem; }
.surface__sub { display: block; color: var(--muted-2); font-size: 0.82rem; margin-top: 4px; }

/* ---------- Sections ---------- */
.section { padding: 96px 0; position: relative; }
.section--alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { max-width: 760px; margin: 0 auto 56px; text-align: center; }
.kicker { display: inline-block; font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--c-ink); font-weight: 700; margin-bottom: 16px; }
.sec-head h2 { font-size: clamp(1.9rem, 4vw, 3rem); margin-bottom: 20px; }
.sec-sub { color: var(--muted); font-size: 1.05rem; margin-top: 12px; }

/* ---------- Shift cards ---------- */
.shift-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.shift-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; background: var(--panel); box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s; }
.shift-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.shift-card__row { display: flex; align-items: center; gap: 12px; }
.shift-card__val { font-family: "Space Grotesk"; font-size: 1.3rem; font-weight: 600; }
.shift-card__arrow { color: var(--v3); font-size: 1.4rem; margin: 10px 0 6px; }
.shift-card p { color: var(--muted); margin-top: 16px; font-size: 0.95rem; }
.tag { font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; font-weight: 700; padding: 4px 10px; border-radius: 6px; }
.tag--from { background: rgba(16,17,40,0.06); color: var(--muted); }
.tag--to { background: rgba(124,92,255,0.12); color: var(--v3); }

/* ---------- Problem ---------- */
.problem-list { list-style: none; display: grid; gap: 14px; margin-top: 8px; }
.problem-list li { display: flex; align-items: flex-start; gap: 14px; padding: 18px 22px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); box-shadow: var(--shadow); font-size: 1.05rem; }
.x { color: #e23a64; font-weight: 700; flex-shrink: 0; }

/* ---------- Framework layers ---------- */
.layers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 28px; }
.layer {
  display: flex; align-items: center; gap: 14px; text-align: left;
  padding: 20px 22px; border: 1px solid var(--line); border-radius: 14px;
  background: var(--panel); cursor: pointer; color: var(--text); box-shadow: var(--shadow);
  font-family: inherit; transition: border-color .2s, background .2s, transform .2s, box-shadow .2s;
}
.layer:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.layer.is-active { border-color: var(--v3); background: rgba(124,92,255,0.06); }
.layer__num { font-family: "Space Grotesk"; font-weight: 700; font-size: 1.1rem; color: var(--v3); }
.layer__title { font-weight: 600; font-size: 0.98rem; }
.layer-detail {
  border: 1px solid var(--line-2); border-radius: var(--radius); padding: 38px;
  background: linear-gradient(180deg, rgba(124,92,255,0.05), rgba(34,211,238,0.03));
  box-shadow: var(--shadow);
}
.layer-detail h3 { font-size: 1.7rem; margin-bottom: 24px; }
.ld-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-bottom: 28px; }
.ld-grid h4 { font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--c-ink); margin-bottom: 8px; }
.ld-grid p { color: var(--muted); font-size: 0.95rem; }
.ld-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.ld-tags span { font-size: 0.85rem; padding: 7px 14px; border: 1px solid var(--line-2); border-radius: 999px; background: #fff; color: var(--text); }

/* ---------- Brand Brain ---------- */
.section--brain { background: radial-gradient(80% 60% at 50% 0%, rgba(124,92,255,0.06), transparent 70%); }
.brain-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.brain-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; background: var(--panel); box-shadow: var(--shadow); position: relative; overflow: hidden; }
.brain-card::before { content: ""; position: absolute; top: 0; left: 0; width: 3px; height: 100%; background: var(--grad); opacity: .9; }
.brain-card h3 { font-size: 1.25rem; margin-bottom: 12px; }
.brain-card p { color: var(--muted); font-size: 0.98rem; }
.brain-note { max-width: 760px; margin: 38px auto 0; text-align: center; color: var(--muted); font-size: 1.08rem; padding: 26px; border: 1px dashed var(--line-2); border-radius: var(--radius); }

/* ---------- Tiers ---------- */
.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: start; }
.tier { border: 1px solid var(--line); border-radius: 20px; padding: 34px 30px; background: var(--panel); box-shadow: var(--shadow); position: relative; display: flex; flex-direction: column; transition: transform .2s, box-shadow .2s; }
.tier:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.tier--featured { border-color: var(--v3); background: linear-gradient(180deg, rgba(124,92,255,0.07), #fff); box-shadow: 0 20px 60px rgba(124,92,255,0.18); }
.tier__badge { position: absolute; top: -13px; left: 50%; transform: translateX(-50%); background: var(--grad); color: #fff; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; padding: 6px 16px; border-radius: 999px; }
.tier__name { font-size: 1.5rem; margin-bottom: 6px; }
.tier__label { color: var(--c-ink); font-size: 0.9rem; font-weight: 600; margin-bottom: 16px; }
.tier__desc { color: var(--muted); font-size: 0.95rem; margin-bottom: 22px; }
.tier__list { list-style: none; display: grid; gap: 12px; margin-bottom: 28px; flex-grow: 1; }
.tier__list li { position: relative; padding-left: 26px; font-size: 0.95rem; }
.tier__list li::before { content: "✓"; position: absolute; left: 0; color: var(--c-ink); font-weight: 700; }

/* ---------- Don't do / compare ---------- */
.dont-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.dont-card { display: flex; gap: 14px; padding: 22px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); box-shadow: var(--shadow); }
.dont-card p { color: var(--muted); font-size: 0.95rem; }
.dont-card strong { color: var(--text); }
.dont-foot { text-align: center; max-width: 760px; margin: 38px auto 0; color: var(--muted); }
.dont-foot a { color: var(--v3); font-weight: 600; }
.dont-foot a:hover { text-decoration: underline; }

.compare { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.compare__col { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; background: var(--panel); box-shadow: var(--shadow); }
.compare__col h3 { font-size: 1.15rem; margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.compare__col ul { list-style: none; display: grid; gap: 14px; }
.compare__col li { color: var(--muted); font-size: 0.95rem; padding-left: 22px; position: relative; }
.compare__col li::before { content: "–"; position: absolute; left: 0; color: var(--muted-2); }
.compare__col--vewo { border-color: var(--v3); background: linear-gradient(180deg, rgba(124,92,255,0.08), #fff); }
.compare__col--vewo h3 { color: var(--text); }
.compare__col--vewo li::before { content: "✓"; color: var(--c-ink); font-weight: 700; }
.compare__col--vewo li { color: var(--text); }

/* ---------- Metrics ---------- */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.metric { border: 1px solid var(--line); border-radius: 14px; padding: 24px; background: var(--panel); box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s; }
.metric:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.metric h3 { font-size: 1.05rem; margin-bottom: 10px; }
.metric p { color: var(--muted); font-size: 0.9rem; }
.intel-statement { max-width: 780px; margin: 56px auto 0; text-align: center; }
.intel-statement .big { font-family: "Space Grotesk"; font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 600; margin-bottom: 16px; }
.intel-statement > p { color: var(--muted); margin-bottom: 14px; }
.intel-statement .muted { color: var(--muted-2); font-size: 0.95rem; }
.intel-truths { list-style: none; display: grid; gap: 12px; margin: 28px 0; }
.intel-truths li { padding: 16px 22px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); box-shadow: var(--shadow); color: var(--text); }
.future { color: var(--muted); margin-top: 8px; }
.future strong { color: var(--text); }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 12px; }
.faq__item { border: 1px solid var(--line); border-radius: 12px; background: var(--panel); box-shadow: var(--shadow); overflow: hidden; }
.faq__item summary { list-style: none; cursor: pointer; padding: 20px 24px; font-family: "Space Grotesk"; font-weight: 600; font-size: 1.05rem; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after { content: "+"; color: var(--v3); font-size: 1.4rem; font-weight: 400; transition: transform .2s; flex-shrink: 0; }
.faq__item[open] summary::after { transform: rotate(45deg); }
.faq__body { padding: 0 24px 22px; color: var(--muted); }

/* ---------- CTA / Form ---------- */
.section--cta { background: radial-gradient(70% 80% at 50% 100%, rgba(124,92,255,0.08), transparent 70%); }
.audit-form { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 16px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 0.85rem; color: var(--muted); font-weight: 500; }
.field input, .field textarea {
  background: #fff; border: 1px solid var(--line-2); border-radius: 12px;
  padding: 13px 16px; color: var(--text); font-family: inherit; font-size: 0.98rem;
  transition: border-color .2s, box-shadow .2s; resize: vertical;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--v3); box-shadow: 0 0 0 3px rgba(124,92,255,0.16); }
.field input::placeholder, .field textarea::placeholder { color: var(--muted-2); }
.form-note { margin-top: 12px; font-size: 0.95rem; text-align: center; min-height: 1.2em; }
.form-note.ok { color: var(--c-ink); }
.form-note.err { color: #e23a64; }
.audit-alt { text-align: center; margin-top: 24px; color: var(--muted); }
.audit-alt a { color: var(--v3); font-weight: 600; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 60px 0 30px; background: var(--bg-2); }
.footer__inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.footer__brand p { color: var(--muted); margin-top: 16px; font-size: 0.95rem; }
.footer__col h4 { font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 16px; }
.footer__col a, .footer__col span { display: block; color: var(--muted); font-size: 0.93rem; padding: 5px 0; transition: color .15s; }
.footer__col a:hover { color: var(--text); }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted-2); font-size: 0.88rem; }
.footer__tag { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; font-weight: 600; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: flex; }
  .nav.open .nav__mobile { display: flex; }
  .surfaces { grid-template-columns: repeat(2, 1fr); }
  .shift-grid, .layers, .ld-grid, .tiers, .compare { grid-template-columns: 1fr; }
  .brain-grid, .dont-grid, .metrics { grid-template-columns: 1fr 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .section { padding: 70px 0; }
  .hero { padding: 70px 0 60px; }
  .surfaces, .brain-grid, .dont-grid, .metrics, .audit-form, .footer__inner { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; gap: 10px; text-align: center; }
  .btn--lg { width: 100%; }
}