/* ============================================================
   Cyata — Design System
   Minimal orange & white. 2026 cloud-native AI infrastructure.
   ============================================================ */

:root {
  /* palette */
  --orange:        #FF6B1A;
  --orange-bright: #FF7A1A;
  --orange-deep:   #F25A00;
  --orange-soft:   #FFF1E6;
  --orange-tint:   #FFF8F2;

  --ink:           #1A120B;
  --ink-2:         #3A2E22;
  --muted:         #6B5D4F;
  --line:          #ECE4DA;
  --line-soft:     #F3ECE2;
  --white:         #FFFFFF;

  /* type */
  --font-sans: 'Inter', 'Helvetica Neue', Arial, system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', ui-monospace, Menlo, Consolas, monospace;

  /* scale */
  --radius-sm: 8px;
  --radius:    14px;
  --radius-lg: 22px;
  --radius-xl: 32px;

  --shadow-sm: 0 1px 2px rgba(26, 18, 11, 0.04), 0 2px 8px rgba(26, 18, 11, 0.04);
  --shadow:    0 2px 6px rgba(26, 18, 11, 0.05), 0 12px 32px rgba(26, 18, 11, 0.07);
  --shadow-lg: 0 8px 24px rgba(26, 18, 11, 0.06), 0 30px 70px rgba(26, 18, 11, 0.10);

  --container: 1180px;
  --container-narrow: 760px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul { list-style: none; }
input, textarea, select { font: inherit; color: inherit; }

::selection { background: var(--orange); color: #fff; }

/* ---------- layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}
.container.narrow { max-width: var(--container-narrow); }

section { position: relative; }
.section { padding-block: clamp(64px, 9vw, 132px); }
.section.tight { padding-block: clamp(48px, 6vw, 88px); }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 920px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ---------- typography ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange-deep);
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1.5px;
  background: var(--orange);
}

h1, h2, h3, h4 { line-height: 1.08; letter-spacing: -0.02em; font-weight: 600; color: var(--ink); }
.display {
  font-size: clamp(44px, 7vw, 88px);
  line-height: 1.02;
  letter-spacing: -0.04em;
  font-weight: 600;
}
.h1 { font-size: clamp(36px, 5.2vw, 60px); }
.h2 { font-size: clamp(28px, 3.6vw, 44px); }
.h3 { font-size: clamp(20px, 2vw, 26px); }
.h4 { font-size: 18px; font-weight: 600; }

.lead {
  font-size: clamp(17px, 1.4vw, 21px);
  line-height: 1.55;
  color: var(--muted);
  max-width: 56ch;
}
.muted { color: var(--muted); }
.mono { font-family: var(--font-mono); }
code, kbd { font-family: var(--font-mono); font-size: 0.92em; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 48px;
  padding-inline: 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s, color .25s, border-color .25s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn-primary {
  background: var(--ink);
  color: #fff;
}
.btn-primary:hover { background: var(--orange-deep); box-shadow: 0 10px 30px rgba(242,90,0,0.28); transform: translateY(-1px); }
.btn-orange {
  background: var(--orange);
  color: #fff;
}
.btn-orange:hover { background: var(--orange-deep); box-shadow: 0 10px 30px rgba(242,90,0,0.30); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn-ghost:hover { border-color: var(--ink); background: var(--orange-tint); }
.btn-lg { height: 56px; padding-inline: 28px; font-size: 16px; }
.btn .arrow { transition: transform .25s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.site-header.scrolled { border-bottom-color: var(--line); }
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { width: 32px; height: 32px; flex: 0 0 auto; }
.brand-name { font-size: 18px; font-weight: 700; letter-spacing: -0.02em; }
.brand-name .tld { color: var(--orange-deep); font-weight: 500; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-2);
  transition: background .2s, color .2s;
}
.nav-links a:hover { background: var(--orange-soft); color: var(--orange-deep); }
.nav-links a.active { color: var(--orange-deep); }
.nav-cta { display: flex; align-items: center; gap: 10px; }
.nav-cta .btn { height: 40px; padding-inline: 18px; font-size: 14px; }

.nav-toggle { display: none; width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--line); align-items: center; justify-content: center; }
.nav-toggle span { position: relative; width: 18px; height: 1.5px; background: var(--ink); }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 1.5px; background: var(--ink);
  transition: transform .25s, top .25s;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

@media (max-width: 880px) {
  .nav-links, .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 24px 20px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
  }
  .nav-links.open a { padding: 14px 12px; border-radius: 10px; font-size: 16px; }
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--orange-tint);
  padding-block: 72px 36px;
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 40px;
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand .brand { margin-bottom: 18px; }
.footer-brand p { color: var(--muted); font-size: 14px; max-width: 30ch; }
.footer-col h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); margin-bottom: 16px; font-weight: 600; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 14.5px; color: var(--ink-2); transition: color .2s; }
.footer-col ul a:hover { color: var(--orange-deep); }
.footer-bottom {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--muted);
}
.footer-bottom .socials { display: flex; gap: 14px; }
.footer-bottom .socials a { color: var(--muted); transition: color .2s; }
.footer-bottom .socials a:hover { color: var(--orange-deep); }

/* ---------- card ---------- */
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--orange-soft); }
.card-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--orange-soft);
  color: var(--orange-deep);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.card-icon svg { width: 22px; height: 22px; }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }

/* ---------- badge / chip ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  font-size: 13px; font-weight: 500;
  color: var(--ink-2);
}
.chip .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 3px var(--orange-soft); }
.chip.live .dot { animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .4; } }

/* ---------- section heading ---------- */
.section-head { max-width: 760px; margin-bottom: clamp(36px, 5vw, 64px); }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head .eyebrow { margin-bottom: 16px; }
.section-head h2 { margin-bottom: 16px; }
.section-head p { color: var(--muted); font-size: clamp(16px, 1.2vw, 19px); max-width: 60ch; }
.section-head.center p { margin-inline: auto; }

/* ---------- reveal animation ---------- */
[data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1 !important; transform: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ---------- utility ---------- */
.center { text-align: center; }
.mx-auto { margin-inline: auto; }
.mt-0 { margin-top: 0; }
.mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; } .mt-48 { margin-top: 48px; } .mt-64 { margin-top: 64px; }
.mb-0 { margin-bottom: 0; } .mb-16 { margin-bottom: 16px; } .mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; } .mb-48 { margin-bottom: 48px; }
.flex { display: flex; } .flex-col { flex-direction: column; }
.items-center { align-items: center; } .justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; } .gap-12 { gap: 12px; } .gap-16 { gap: 16px; } .gap-24 { gap: 24px; }
.flex-wrap { flex-wrap: wrap; }
.hidden-mobile { } 
@media (max-width: 620px) { .hide-sm { display: none !important; } }
.divider { height: 1px; background: var(--line); border: 0; }