/* =========================================================================
   PRAJAPATI NEXATECH — base.css
   Design tokens, reset, typography, background system, utilities.
   No web fonts, no CSS frameworks: instant paint on mobile data.
   ========================================================================= */

:root {
  /* colour */
  --bg: #05070d;
  --bg-1: #070b14;
  --bg-2: #0b1120;
  --ink: #e9eefc;
  --ink-2: #c3cfe6;
  --muted: #93a3c2;
  --faint: #6f7f9e;

  --cyan: #22d3ee;
  --sky: #38bdf8;
  --blue: #4f7cff;
  --indigo: #6366f1;
  --violet: #a855f7;
  --green: #34d399;
  --amber: #fbbf24;
  --rose: #fb7185;

  --grad: linear-gradient(115deg, #22d3ee 0%, #4f7cff 45%, #a855f7 100%);
  --grad-soft: linear-gradient(140deg, rgba(34, 211, 238, 0.16), rgba(99, 102, 241, 0.1) 45%, rgba(168, 85, 247, 0.16));
  --glass: linear-gradient(160deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02) 55%, rgba(255, 255, 255, 0.05));
  --hairline: rgba(255, 255, 255, 0.1);
  --hairline-strong: rgba(255, 255, 255, 0.18);

  --ok: rgba(52, 211, 153, 0.14);
  --warn: rgba(251, 191, 36, 0.14);
  --bad: rgba(251, 113, 133, 0.14);

  /* radius / shadow */
  --r-sm: 10px;
  --r: 16px;
  --r-lg: 22px;
  --r-xl: 30px;
  --shadow-1: 0 1px 0 rgba(255, 255, 255, 0.05) inset, 0 18px 40px -24px rgba(0, 0, 0, 0.9);
  --shadow-2: 0 30px 80px -40px rgba(0, 0, 0, 0.95), 0 2px 0 rgba(255, 255, 255, 0.05) inset;
  --glow-cyan: 0 0 0 1px rgba(34, 211, 238, 0.35), 0 14px 45px -14px rgba(34, 211, 238, 0.55);

  /* type */
  --font-display: "Space Grotesk", "Outfit", "Segoe UI Variable Display", "Segoe UI", Inter, system-ui, -apple-system, sans-serif;
  --font-body: Inter, "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "Segoe UI Mono", Menlo, Consolas, monospace;

  /* rhythm */
  --space-1: 6px;
  --space-2: 12px;
  --space-3: 18px;
  --space-4: 26px;
  --space-5: 38px;
  --space-6: 56px;
  --space-7: 82px;
  --container: 1560px;
  --header-h: 76px;
  --radius-field: 12px;
}

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

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: clamp(15.2px, 0.35vw + 14.4px, 17px);
  line-height: 1.65;
  letter-spacing: 0.005em;
  min-height: 100vh;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, .display {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: #fff;
  text-wrap: balance;
}
h1 { font-size: clamp(2rem, 4.4vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 2.9vw, 2.5rem); }
h3 { font-size: clamp(1.12rem, 1.6vw, 1.4rem); letter-spacing: -0.012em; }
h4 { font-size: 1.05rem; }
.display--xl { font-size: clamp(2.35rem, 5.6vw, 4.5rem); line-height: 1.02; }

p, li { color: var(--ink-2); }
strong { color: #fff; font-weight: 650; }
em { color: var(--ink-2); }
small { font-size: 0.84em; }

a { color: inherit; text-decoration: none; }
a:not([class]) { color: var(--sky); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; text-decoration-color: rgba(56, 189, 248, 0.4); }
a:not([class]):hover { color: #fff; text-decoration-color: var(--cyan); }

img, svg, canvas, iframe, video { display: block; max-width: 100%; }
img { height: auto; }
ul, ol { padding-inline-start: 1.15rem; }
li + li { margin-top: 0.35rem; }

code, kbd, samp, .mono { font-family: var(--font-mono); font-size: 0.92em; }
kbd {
  border: 1px solid var(--hairline);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 1px 6px;
  background: rgba(255, 255, 255, 0.06);
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: rgba(34, 211, 238, 0.32); color: #fff; }

hr { border: 0; border-top: 1px solid var(--hairline); margin: var(--space-5) 0; }

table { width: 100%; border-collapse: collapse; }

.skip-link {
  position: fixed;
  z-index: 999;
  top: 8px;
  left: 8px;
  transform: translateY(-160%);
  background: #fff;
  color: #06080f;
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 700;
  transition: transform 0.18s ease;
}
.skip-link:focus-visible { transform: none; }

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.visually-hidden-sm { display: none; }

/* ------------------------------ icon system ------------------------------ */
.icon { width: 1.35em; height: 1.35em; flex: none; fill: none; }
.ico { width: 1.15em; height: 1.15em; vertical-align: -0.18em; }
.ico--sm { width: 0.95em; height: 0.95em; }
.ico--ok { color: var(--green); }
.icon-sprite { pointer-events: none; }

/* ---------------------------- background system -------------------------- */
.site-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    radial-gradient(1200px 620px at 8% -8%, rgba(34, 211, 238, 0.11), transparent 62%),
    radial-gradient(1000px 700px at 96% 6%, rgba(168, 85, 247, 0.12), transparent 60%),
    radial-gradient(900px 600px at 50% 108%, rgba(79, 124, 255, 0.1), transparent 65%),
    linear-gradient(180deg, #05070d 0%, #070b14 40%, #05070d 100%);
}
.site-bg__grid {
  position: absolute;
  inset: -20%;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 78px 78px;
  mask-image: radial-gradient(closest-side at 50% 32%, #000 55%, transparent 92%);
  opacity: 0.55;
}
.site-bg__circuit {
  position: absolute;
  inset: 0;
  opacity: 0.4;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260' viewBox='0 0 260 260'%3E%3Cg fill='none' stroke='%2322d3ee' stroke-opacity='.16' stroke-width='1.1'%3E%3Cpath d='M12 58h52l18 18h58l16-16h44'/%3E%3Cpath d='M12 128h40l22 22h74'/%3E%3Cpath d='M96 12v34l-16 16v40'/%3E%3Cpath d='M206 250v-46l-22-22V126'/%3E%3Cpath d='M248 190h-44l-18-18h-40'/%3E%3C/g%3E%3Cg fill='%23a855f7' fill-opacity='.28'%3E%3Ccircle cx='64' cy='58' r='3.4'/%3E%3Ccircle cx='140' cy='76' r='3'/%3E%3Ccircle cx='196' cy='250' r='3.4'/%3E%3Ccircle cx='52' cy='128' r='3'/%3E%3C/g%3E%3C/svg%3E");
  mask-image: linear-gradient(180deg, #000, transparent 70%);
}
.site-bg__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  will-change: transform;
  animation: orbFloat 26s ease-in-out infinite;
}
.site-bg__orb--1 { width: 460px; height: 460px; top: -140px; left: -120px; background: radial-gradient(circle, rgba(34, 211, 238, 0.3), transparent 65%); }
.site-bg__orb--2 { width: 520px; height: 520px; top: 22%; right: -180px; background: radial-gradient(circle, rgba(168, 85, 247, 0.26), transparent 65%); animation-duration: 32s; animation-direction: reverse; }
.site-bg__orb--3 { width: 420px; height: 420px; bottom: -160px; left: 28%; background: radial-gradient(circle, rgba(56, 189, 248, 0.2), transparent 65%); animation-duration: 38s; }
.site-bg__particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.75;
}

@keyframes orbFloat {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(26px, -34px, 0) scale(1.06); }
}

/* ------------------------------- utilities ------------------------------- */
.container { width: min(100% - clamp(18px, 4vw, 72px), var(--container)); margin-inline: auto; }
.container--narrow { width: min(100% - clamp(18px, 4vw, 56px), 900px); }
.container--wide { width: min(100% - clamp(14px, 3vw, 56px), 1780px); }

.section { padding-block: clamp(52px, 6.4vw, 104px); position: relative; }
.section--tight { padding-block: clamp(38px, 4vw, 62px); }
.section--alt { background: linear-gradient(180deg, rgba(255, 255, 255, 0.022), rgba(255, 255, 255, 0)); border-block: 1px solid rgba(255, 255, 255, 0.05); }
.section--ink { background: linear-gradient(180deg, rgba(5, 7, 13, 0.2), rgba(5, 7, 13, 0.75)); }

.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lead { font-size: clamp(1.02rem, 1.28vw, 1.24rem); color: var(--ink-2); max-width: 62ch; }
.muted { color: var(--muted); }
.muted-sm { color: var(--faint); font-size: 0.9em; }
.mono-id { font-family: var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; font-size: 0.9em; }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.stack > * + * { margin-top: var(--space-3); }
.stack-sm > * + * { margin-top: var(--space-2); }
.row { display: flex; gap: var(--space-3); flex-wrap: wrap; align-items: center; }
.row--between { justify-content: space-between; }
.row--end { justify-content: flex-end; }
.grid { display: grid; gap: var(--space-4); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 288px), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 232px), 1fr)); }
.divider-grad { height: 1px; background: linear-gradient(90deg, transparent, var(--hairline-strong), transparent); border: 0; }
.anchor-pad { scroll-margin-top: calc(var(--header-h) + 20px); }

/* Reveal-on-scroll is pure CSS (progressive enhancement, no JS gate):
   if the browser lacks scroll-driven animations the element is simply visible. */
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    html.js [data-reveal] {
      animation: revealUp 1s cubic-bezier(0.2, 0.7, 0.2, 1) both;
      animation-timeline: view();
      animation-range: entry 2% cover 24%;
    }
    html.js [data-reveal][data-reveal-delay="80"] { animation-range: entry 6% cover 28%; }
    html.js [data-reveal][data-reveal-delay="120"] { animation-range: entry 9% cover 30%; }
    html.js [data-reveal][data-reveal-delay="160"] { animation-range: entry 12% cover 32%; }
    html.js [data-reveal][data-reveal-delay="240"] { animation-range: entry 16% cover 34%; }
  }
}
@keyframes revealUp {
  from { opacity: 0; transform: translate3d(0, 26px, 0); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  html.js [data-reveal] { animation: none !important; opacity: 1 !important; transform: none !important; }
  .site-bg__particles { display: none; }
}

@media print {
  .site-bg, .topbar, .fab-stack, .site-header, .cta-band, .hero3d__rings-wrap, .site-footer .footer__cta { display: none !important; }
  body { background: #fff; color: #000; }
  p, li, a { color: #111; }
  .glass-card, .card3d { border: 1px solid #bbb; box-shadow: none; background: #fff; }
}