/* ============================================================
   FUTURISTIC UI (NEXUS) — Canonical stylesheet
   Semantic classes, driven entirely by tokens.css.
   No build step, no framework. Edit freely.
   Dark sci-fi HUD: glowing cyan lines, scanlines, ring motifs.
   ============================================================ */

@import url("https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;800&family=Rajdhani:wght@300;400;500;600;700&family=Share+Tech+Mono&display=swap");
@import url("./tokens.css");

/* ---------------- Reset / base ---------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--nd-black);
  color: var(--neutral-200);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
[hidden] { display: none !important; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }
ul { list-style: none; padding: 0; }
::selection { background: rgba(0,212,255,.25); color: var(--neutral-50); }
:focus-visible { outline: 2px solid rgba(0,212,255,.7); outline-offset: 3px; }

/* ---------------- Layout primitives ---------------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: 1.5rem; }
.container--narrow { max-width: var(--container-narrow); }
.section { padding-block: 6rem; position: relative; }
.section--alt { background: var(--nd-charcoal); }
.section__head { text-align: center; max-width: 42rem; margin: 0 auto 4rem; }
.eyebrow { color: var(--neutral-400); font-family: var(--font-mono); letter-spacing: .25em; text-transform: uppercase; font-size: .8rem; }

h1, h2, h3, h4 { font-family: var(--font-display); color: var(--neutral-100); font-weight: 600; line-height: 1.15; letter-spacing: .02em; }
.h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); margin-bottom: 1rem; text-transform: uppercase; letter-spacing: .06em; }
.lead { color: var(--neutral-400); font-size: 1.05rem; }
.text-prism {
  background: linear-gradient(135deg, #7ff0ff 0%, #00d4ff 50%, #00e5ff 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  text-shadow: none;
  filter: drop-shadow(0 0 14px rgba(0,212,255,.45));
}

/* ---------------- Decorative helpers ---------------- */
.deco-pattern { background-image: var(--deco-pattern); background-size: var(--deco-pattern-size); }
.deco-line { height: 1px; background: var(--deco-line); }
.scanlines::after {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: var(--scanlines); opacity: .6;
}
.noise::before {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; opacity: .02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.glow-text { text-shadow: var(--glow-text); }

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  font-family: var(--font-display); font-weight: 600; font-size: .8rem;
  text-transform: uppercase; letter-spacing: .2em;
  padding: .85rem 2rem; border: 1px solid transparent; border-radius: var(--radius);
  transition: all var(--dur-slow) var(--ease); position: relative; overflow: hidden;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}
.btn--sm { padding: .55rem 1.15rem; font-size: .7rem; letter-spacing: .16em; }
.btn--lg { padding: 1rem 2.4rem; font-size: .88rem; letter-spacing: .22em; }
.btn--primary { background: var(--prism-gradient); color: var(--nd-black); box-shadow: var(--glow-cyan); font-weight: 700; }
.btn--primary:hover { box-shadow: var(--glow-cyan-lg); }
.btn--primary::after {
  content: ""; position: absolute; inset: 0; background: rgba(255,255,255,0); transition: background var(--dur);
}
.btn--primary:hover::after { background: rgba(255,255,255,.15); }
.btn--outline { border-color: var(--nd-line); color: var(--prism-cyan); background: rgba(0,212,255,.04); }
.btn--outline:hover { border-color: var(--nd-line-light); background: rgba(0,212,255,.12); box-shadow: var(--glow-sm); }
.btn--ghost { color: var(--neutral-300); }
.btn--ghost:hover { color: var(--prism-cyan); background: rgba(0,212,255,.06); }
.btn--block { width: 100%; }

/* ---------------- Badge / pill ---------------- */
.badge {
  display: inline-flex; align-items: center; padding: .3rem .8rem;
  font-family: var(--font-mono); font-size: .68rem; font-weight: 400;
  text-transform: uppercase; letter-spacing: .22em;
  border: 1px solid var(--nd-line-faint); border-radius: var(--radius); color: var(--neutral-300);
  background: var(--nd-slate);
}
.badge--accent { color: var(--prism-cyan); border-color: var(--nd-line); background: rgba(0,212,255,.08); box-shadow: var(--glow-sm); }
.badge--gold { color: var(--prism-gold); border-color: rgba(255,204,0,.35); background: rgba(255,204,0,.08); }

/* ---------------- Navbar ---------------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  background: rgba(10,15,22,.82); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--nd-line-faint);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 4rem; }
.brand { display: inline-flex; align-items: center; gap: .6rem; }
.brand__mark {
  width: 1.6rem; height: 1.6rem; background: var(--prism-gradient);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  box-shadow: var(--glow-cyan);
}
.brand__name { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; color: var(--neutral-100); letter-spacing: .12em; text-transform: uppercase; }
.nav__links { display: none; align-items: center; gap: 2rem; }
.nav__link { font-family: var(--font-display); font-size: .82rem; text-transform: uppercase; letter-spacing: .1em; color: var(--neutral-400); transition: color var(--dur), text-shadow var(--dur); }
.nav__link:hover { color: var(--prism-cyan); text-shadow: var(--glow-text); }
.nav__cta { display: none; }
.nav__toggle { display: inline-flex; color: var(--prism-cyan); padding: .25rem; }
.nav__mobile { display: none; border-top: 1px solid var(--nd-line-faint); background: var(--nd-charcoal); }
.nav__mobile.open { display: block; }
.nav__mobile ul { display: flex; flex-direction: column; gap: .25rem; padding: 1rem 0; }
.nav__mobile a { display: block; padding: .6rem 0; font-size: .95rem; color: var(--neutral-400); }
.nav__mobile a:hover { color: var(--prism-cyan); }
.nav__mobile .btn { margin-top: .75rem; }

@media (min-width: 768px) {
  .nav__links { display: flex; }
  .nav__cta { display: block; }
  .nav__toggle { display: none; }
}

/* ---------------- Hero ---------------- */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  padding: 8rem 0 6rem; overflow: hidden; text-align: center;
}
.hero__glow {
  position: absolute; top: 50%; left: 50%; width: 1100px; height: 1100px;
  transform: translate(-50%, -50%); background: var(--glow-radial-prism); pointer-events: none;
}
/* Concentric HUD rings (CSS fallback; canvas enhances when JS + motion allowed) */
.hero__rings { position: absolute; inset: 0; display: grid; place-items: center; pointer-events: none; z-index: 1; }
.hero__rings .ring {
  position: absolute; border-radius: 50%; border: 1px solid rgba(0,212,255,.14);
}
.hero__rings .ring--1 { width: 300px; height: 300px; border-width: 2px; border-color: rgba(0,212,255,.4); animation: hud-spin 25s linear infinite; }
.hero__rings .ring--2 { width: 460px; height: 460px; border-color: rgba(0,212,255,.28); animation: hud-spin 40s linear infinite reverse; }
.hero__rings .ring--3 { width: 640px; height: 640px; border-color: rgba(0,212,255,.16); animation: hud-spin 60s linear infinite; }
.hero__rings .ring--1::before,
.hero__rings .ring--2::before {
  content: ""; position: absolute; top: -4px; left: 50%; width: 6px; height: 6px;
  background: var(--prism-cyan); box-shadow: var(--glow-cyan); transform: translateX(-50%);
}
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; pointer-events: none; opacity: .9; }
.hero__frame { position: absolute; inset: 2rem; pointer-events: none; z-index: 2; }
.hero__frame .deco-line { position: absolute; left: 0; right: 0; }
.hero__frame .deco-line--top { top: 0; }
.hero__frame .deco-line--bottom { bottom: 0; }
.corner { position: absolute; width: 2rem; height: 2rem; }
.corner--tl { top: 0; left: 0; border-top: 1px solid var(--nd-line); border-left: 1px solid var(--nd-line); }
.corner--tr { top: 0; right: 0; border-top: 1px solid var(--nd-line); border-right: 1px solid var(--nd-line); }
.corner--bl { bottom: 0; left: 0; border-bottom: 1px solid var(--nd-line); border-left: 1px solid var(--nd-line); }
.corner--br { bottom: 0; right: 0; border-bottom: 1px solid var(--nd-line); border-right: 1px solid var(--nd-line); }
.hero__inner { position: relative; z-index: 10; max-width: 56rem; margin-inline: auto; }
.hero__title { font-size: clamp(2.75rem, 7vw, 5rem); margin: 1.5rem 0; text-transform: uppercase; letter-spacing: .08em; font-weight: 800; }
.hero__desc { max-width: 34rem; margin: 0 auto 2.5rem; color: var(--neutral-300); font-size: 1.1rem; font-weight: 400; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }
.hero__ornament { position: absolute; bottom: 3.5rem; left: 50%; transform: translateX(-50%); display: flex; align-items: center; gap: 1rem; z-index: 3; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .3em; color: var(--neutral-500); text-transform: uppercase; }
.hero__ornament span.l, .hero__ornament span.r { width: 3rem; height: 1px; }
.hero__ornament .l { background: linear-gradient(90deg, transparent, rgba(0,212,255,.5)); }
.hero__ornament .r { background: linear-gradient(-90deg, transparent, rgba(0,212,255,.5)); }
.hero__ornament .diamond { width: .55rem; height: .55rem; transform: rotate(45deg); background: var(--prism-cyan); box-shadow: var(--glow-cyan); }
/* scanline sweep */
.hero__sweep {
  position: absolute; left: 0; right: 0; height: 2px; z-index: 2; pointer-events: none;
  background: linear-gradient(90deg, transparent, var(--prism-cyan), transparent);
  opacity: .5; animation: hud-sweep 5s linear infinite;
}

@keyframes hud-spin { from { transform: rotate(0); } to { transform: rotate(360deg); } }
@keyframes hud-sweep { 0% { top: 0; } 100% { top: 100%; } }
@keyframes pulse-glow { 0%,100% { opacity: 1; } 50% { opacity: .65; } }

/* ---------------- Features ---------------- */
.features__grid { display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
.feature {
  position: relative; padding: 1.75rem; background: var(--nd-panel); border: 1px solid var(--nd-line-faint);
  transition: border-color var(--dur-slow) var(--ease), box-shadow var(--dur-slow) var(--ease);
}
/* HUD corner brackets */
.feature::before, .feature::after {
  content: ""; position: absolute; width: 14px; height: 14px; pointer-events: none;
  transition: border-color var(--dur);
}
.feature::before { top: 6px; left: 6px; border-top: 2px solid var(--nd-line); border-left: 2px solid var(--nd-line); }
.feature::after { bottom: 6px; right: 6px; border-bottom: 2px solid var(--nd-line); border-right: 2px solid var(--nd-line); }
.feature:hover { border-color: var(--nd-line-light); box-shadow: var(--glow-prism); }
.feature:hover::before, .feature:hover::after { border-color: var(--prism-cyan); }
.feature__icon {
  color: var(--prism-cyan); margin-bottom: 1.1rem; width: 3.25rem; height: 3.25rem;
  display: grid; place-items: center; background: rgba(0,212,255,.08); border: 1px solid var(--nd-line-faint);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}
.feature__icon svg { width: 1.5rem; height: 1.5rem; }
.feature__title { font-size: 1.1rem; margin-bottom: .5rem; text-transform: uppercase; letter-spacing: .04em; }
.feature__desc { font-size: .95rem; color: var(--neutral-400); }
@media (min-width: 768px) { .features__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .features__grid { grid-template-columns: repeat(3, 1fr); } }

/* ---------------- Pricing ---------------- */
.pricing__grid { display: grid; gap: 2rem; grid-template-columns: 1fr; align-items: start; }
.tier { position: relative; padding: 2.25rem; background: var(--nd-panel); border: 1px solid var(--nd-line-faint); }
.tier--featured { background: var(--nd-slate); border: 1px solid transparent; box-shadow: var(--glow-prism); }
.tier--featured::before {
  content: ""; position: absolute; inset: 0; padding: 1px; background: var(--prism-gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); mask-composite: exclude;
  pointer-events: none;
}
.tier__flag { position: absolute; top: -.75rem; left: 50%; transform: translateX(-50%); }
.tier__name { text-align: center; font-size: 1.1rem; margin-bottom: .5rem; text-transform: uppercase; letter-spacing: .08em; }
.tier__price { text-align: center; display: flex; align-items: baseline; justify-content: center; gap: .25rem; }
.tier__amount { font-family: var(--font-display); font-size: 2.75rem; font-weight: 700; }
.tier__amount.text-prism { line-height: 1.1; }
.tier__period { color: var(--neutral-500); font-family: var(--font-mono); }
.tier__desc { text-align: center; font-size: .9rem; color: var(--neutral-400); margin: .5rem 0 2rem; }
.tier__features { display: flex; flex-direction: column; gap: .75rem; margin-bottom: 2rem; }
.tier__features li { display: flex; align-items: center; gap: .75rem; font-size: .95rem; color: var(--neutral-300); }
.tier__features svg { width: 1rem; height: 1rem; color: var(--prism-cyan); flex-shrink: 0; }
@media (min-width: 768px) { .pricing__grid { grid-template-columns: repeat(3, 1fr); } }

/* ---------------- Testimonials ---------------- */
.tst__grid { display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
.tst {
  position: relative; padding: 1.75rem; background: var(--nd-panel); border: 1px solid var(--nd-line-faint);
  display: flex; flex-direction: column; gap: 1.25rem;
}
.tst__quote { color: var(--neutral-200); font-size: 1rem; line-height: 1.7; }
.tst__quote::before { content: "\201C"; font-family: var(--font-display); color: var(--prism-cyan); font-size: 2rem; line-height: 0; vertical-align: -.35em; margin-right: .15em; }
.tst__who { display: flex; align-items: center; gap: .85rem; }
.tst__avatar {
  width: 2.6rem; height: 2.6rem; flex-shrink: 0; display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 700; color: var(--nd-black); background: var(--prism-gradient);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}
.tst__name { font-size: .95rem; color: var(--neutral-100); font-weight: 600; }
.tst__role { font-size: .78rem; color: var(--neutral-500); font-family: var(--font-mono); }
@media (min-width: 768px) { .tst__grid { grid-template-columns: repeat(3, 1fr); } }

/* ---------------- FAQ ---------------- */
.faq { max-width: 44rem; margin-inline: auto; }
.faq__item { border-bottom: 1px solid var(--nd-line-faint); }
.faq__q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.3rem 0; text-align: left; font-family: var(--font-display); font-size: 1rem; color: var(--neutral-100);
  text-transform: uppercase; letter-spacing: .03em;
}
.faq__q svg { width: 1.1rem; height: 1.1rem; color: var(--prism-cyan); flex-shrink: 0; transition: transform var(--dur) var(--ease); }
.faq__item.open .faq__q svg { transform: rotate(180deg); }
.faq__a { overflow: hidden; max-height: 0; transition: max-height var(--dur) var(--ease); }
.faq__a p { padding: 0 0 1.3rem; color: var(--neutral-400); font-size: .98rem; }

/* ---------------- CTA ---------------- */
.cta { position: relative; overflow: hidden; text-align: center; }
.cta__glow { position: absolute; inset: 0; background: radial-gradient(ellipse at center, rgba(0,212,255,.14), transparent 60%); opacity: .7; }
.cta__inner { position: relative; z-index: 10; max-width: 40rem; margin-inline: auto; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; margin-top: 2rem; }

/* ---------------- Footer ---------------- */
.footer { background: var(--nd-black); border-top: 1px solid var(--nd-line-faint); }
.footer__inner { padding-block: 4rem; }
.footer__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; margin-bottom: 3rem; }
.footer__brand { grid-column: 1 / -1; }
.footer__brand p { font-size: .95rem; color: var(--neutral-500); max-width: 20rem; margin-top: 1rem; }
.footer__col h4 { font-family: var(--font-mono); font-size: .72rem; font-weight: 400; text-transform: uppercase; letter-spacing: .22em; color: var(--prism-cyan); margin-bottom: 1rem; }
.footer__col li { margin-bottom: .6rem; }
.footer__col a { font-size: .95rem; color: var(--neutral-500); transition: color var(--dur); }
.footer__col a:hover { color: var(--prism-cyan); }
.footer__bottom { padding-top: 2rem; border-top: 1px solid var(--nd-line-faint); display: flex; flex-direction: column; align-items: center; gap: 1.25rem; }
.footer__copy { font-size: .78rem; color: var(--neutral-600); text-align: center; font-family: var(--font-mono); }
.footer__made { display: flex; align-items: center; gap: 1.25rem; }
@media (min-width: 768px) {
  .footer__grid { grid-template-columns: repeat(4, 1fr); }
  .footer__brand { grid-column: auto; }
  .footer__bottom { flex-direction: row; justify-content: space-between; }
}

/* ---------------- Scroll reveal ---------------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__rings .ring, .hero__sweep { animation: none !important; }
  html { scroll-behavior: auto; }
}