/* ══════════════════════════════════════════════════════════════════
   HELZERX TECHNOLOGIES — design system
   Monochrome: #010101 · #FCFDFD · #9C9D9D · #7C8382 · #555554
   ══════════════════════════════════════════════════════════════════ */

:root {
  --bg:        #010101;
  --bg-2:      #0a0a0a;
  --surface:   #131313;
  --surface-2: #171717;
  --surface-3: #1d1d1d;
  --border:    rgba(252, 253, 253, .07);
  --border-2:  rgba(252, 253, 253, .14);
  --text:      #FCFDFD;
  --text-2:    #9C9D9D;
  --text-3:    #7C8382;
  --text-4:    #555554;
  --white:     #FCFDFD;

  --font-d: "Space Grotesk", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-m: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --container: 1500px;
  --gutter: clamp(20px, 4.5vw, 64px);
  --radius: 18px;
  --radius-sm: 13px;
  --nav-h: 72px;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ── reset ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  color-scheme: dark;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-d);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

::selection { background: var(--white); color: var(--bg); }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #242424; border-radius: 8px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: #343434; }

img, svg { display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
ul { list-style: none; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.zap, .card-icon, .glyph, .chev { width: 100%; height: 100%; }

.skip-link {
  position: fixed; top: -60px; left: 16px; z-index: 200;
  background: var(--white); color: var(--bg);
  font: 600 13px/1 var(--font-d);
  padding: 10px 16px; border-radius: 8px;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; }

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

/* ── navigation ────────────────────────────────────────────────── */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--nav-h);
  transition: background .35s var(--ease), border-color .35s var(--ease), backdrop-filter .35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(1, 1, 1, .72);
  -webkit-backdrop-filter: blur(14px) saturate(1.1);
  backdrop-filter: blur(14px) saturate(1.1);
  border-color: var(--border);
}

.nav-inner {
  max-width: var(--container); height: 100%;
  margin: 0 auto; padding: 0 var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { width: 22px; height: 22px; color: var(--white); flex: none; }
.brand-word {
  font: 600 18px/1 var(--font-d);
  letter-spacing: -.02em; color: var(--white);
}
.brand:hover .brand-mark { transform: rotate(-6deg); }
.brand-mark { transition: transform .4s var(--ease); }

.nav-links { display: flex; align-items: center; gap: clamp(14px, 2vw, 30px); }
.nav-links a {
  font: 500 11.5px/1 var(--font-m);
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--text-3);
  padding: 8px 2px; position: relative;
  transition: color .25s var(--ease);
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 2px;
  width: 100%; height: 1px; background: var(--white);
  transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-toggle {
  display: none; width: 40px; height: 40px;
  color: var(--white); position: relative; z-index: 110;
}
.nav-toggle svg { width: 21px; height: 21px; margin: auto; }
.nav-toggle .ic-x { display: none; }
.nav-toggle[aria-expanded="true"] .ic-menu { display: none; }
.nav-toggle[aria-expanded="true"] .ic-x { display: block; }

.mobile-menu {
  position: fixed; inset: var(--nav-h) 0 auto 0; z-index: 99;
  background: rgba(1, 1, 1, .96);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  padding: 10px var(--gutter) 26px;
}
.mobile-menu:not([hidden]) { animation: menuIn .28s var(--ease); }
@keyframes menuIn {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: none; }
}
.mobile-menu nav { display: grid; gap: 2px; }
.mobile-menu a {
  font: 500 13px/1 var(--font-m); letter-spacing: .12em; text-transform: uppercase;
  color: var(--text-2);
  padding: 15px 4px;
  border-bottom: 1px solid rgba(252, 253, 253, .05);
  transition: color .2s, padding-left .25s var(--ease);
}
.mobile-menu a:hover { color: var(--white); padding-left: 10px; }

/* ── layout grid ───────────────────────────────────────────────── */
.layout {
  max-width: var(--container);
  margin: 0 auto;
  padding: calc(var(--nav-h) + clamp(28px, 5vh, 64px)) var(--gutter) 0;
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  column-gap: clamp(32px, 4vw, 72px);
  row-gap: clamp(48px, 7vh, 96px);
  position: relative;
}
.col { display: flex; flex-direction: column; gap: clamp(48px, 7vh, 96px); min-width: 0; }
.col-right { position: relative; z-index: 2; }

/* ── eyebrows / section headings ────────────────────────────────── */
.eyebrow {
  display: flex; align-items: center; gap: 10px;
  font: 500 11px/1 var(--font-m);
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: clamp(16px, 2.2vh, 26px);
}
.eyebrow .zap { width: 14px; height: 14px; color: var(--white); flex: none; }

.section-h {
  font: 500 clamp(1.7rem, 3.4vw, 2.7rem)/1.08 var(--font-d);
  letter-spacing: -.025em; color: var(--white);
  margin-bottom: clamp(14px, 2vh, 20px);
}
.section-p {
  font: 400 15px/1.65 var(--font-d);
  color: var(--text-2);
  max-width: 52ch;
  margin-bottom: clamp(22px, 3.2vh, 34px);
}

/* ── hero ───────────────────────────────────────────────────────── */
.hero-text { position: relative; z-index: 2; }

.hero-h1 {
  font: 500 clamp(2.55rem, 4.2vw, 3.7rem)/1.02 var(--font-d);
  letter-spacing: -.035em; color: var(--white);
  white-space: nowrap;
}
.hero-h2 {
  font: 500 clamp(1.55rem, 3.3vw, 2.75rem)/1.05 var(--font-d);
  letter-spacing: -.028em; color: var(--white);
  margin-top: clamp(10px, 1.6vh, 18px);
  white-space: nowrap;
}
.hero-tagline {
  font: 400 clamp(14px, 2.2vw, 16.5px)/1.5 var(--font-d);
  color: var(--text-2);
  margin-top: clamp(16px, 2.4vh, 26px);
}

.btn-primary {
  display: inline-flex; align-items: center; gap: 10px;
  margin-top: clamp(24px, 3.8vh, 40px);
  background: var(--white); color: var(--bg);
  font: 600 14.5px/1 var(--font-d);
  letter-spacing: -.01em;
  padding: 15px 27px; border-radius: 999px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease);
}
.btn-primary svg { width: 16px; height: 16px; transition: transform .3s var(--ease); }
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(252, 253, 253, .25), 0 8px 44px rgba(252, 253, 253, .22);
}
.btn-primary:hover svg { transform: translateX(4px); }
.btn-primary:active { transform: translateY(0); }

/* ── orb visual ─────────────────────────────────────────────────── */
.orb-wrap {
  position: relative; z-index: 0;
  width: 132%;
  max-width: 900px;
  margin: clamp(-150px, -13vh, -50px) -28% clamp(-110px, -10vh, -36px) 28%;
  pointer-events: none;
}
.orb { width: 100%; height: auto; overflow: visible; }

@keyframes corePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .88; transform: scale(1.028); }
}
@keyframes raysShimmer {
  0%, 100% { opacity: 1; }
  50%      { opacity: .72; }
}
@keyframes coneBreathe {
  0%, 100% { opacity: 1; }
  50%      { opacity: .8; }
}
@keyframes dustDrift {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-7px); }
}
.o-core   { transform-box: view-box; transform-origin: 480px 330px; animation: corePulse 6.5s ease-in-out infinite; }
.o-rays   { animation: raysShimmer 4.6s ease-in-out infinite; }
.o-cone   { animation: coneBreathe 8s ease-in-out infinite; }
.o-dust   { animation: dustDrift 9s ease-in-out infinite; }

/* ── logos / tech stack ─────────────────────────────────────────── */
.logos {
  border-top: 1px solid var(--border);
  padding-top: clamp(22px, 3vh, 32px);
}
.logos-row {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: clamp(22px, 4vw, 54px);
}
.logo {
  display: inline-flex; align-items: center; gap: 9px;
  color: var(--text-4);
  transition: color .3s var(--ease);
}
.logo:hover { color: var(--text-2); }
.logo svg { width: auto; height: 15px; }
.logo .lg-name { font: 500 15px/1 var(--font-d); letter-spacing: -.01em; white-space: nowrap; }
.logo.lg-word .lg-name { font-weight: 700; letter-spacing: -.02em; }

/* ── cards ─────────────────────────────────────────────────────── */
.cards-3 {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(10px, 1.2vw, 14px);
}
.cards-4 {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: clamp(10px, 1vw, 14px);
}

.card {
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(16px, 1.6vw, 22px);
  transition: border-color .3s var(--ease), transform .3s var(--ease), background .3s var(--ease);
}
.card:hover {
  border-color: var(--border-2);
  transform: translateY(-2px);
}

.card-icon {
  width: 19px; height: 19px;
  color: var(--white); margin-bottom: 14px;
}
.div-tag {
  font: 500 9.5px/1 var(--font-m);
  letter-spacing: .18em;
  color: var(--text-4);
  margin-bottom: 14px;
}
.div-title {
  font: 500 13.5px/1.3 var(--font-d);
  letter-spacing: -.01em; color: var(--white);
}
.card-desc {
  font: 400 12.5px/1.55 var(--font-d);
  color: var(--text-3);
  margin-top: 10px;
}

/* ── how it works / tabs ────────────────────────────────────────── */
.tabs {
  display: inline-flex; align-items: stretch;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  gap: 2px;
  margin-bottom: clamp(24px, 3.4vh, 38px);
}
.tab {
  display: inline-flex; align-items: center; gap: 7px;
  font: 500 10.5px/1 var(--font-m);
  letter-spacing: .14em;
  color: var(--text-4);
  padding: 9px 15px; border-radius: 999px;
  transition: color .25s var(--ease), background .25s var(--ease);
  white-space: nowrap;
}
.tab .zap { width: 11px; height: 11px; opacity: 0; transition: opacity .25s var(--ease); }
.tab:hover { color: var(--text-2); }
.tab.is-active {
  color: var(--bg);
  background: var(--white);
}
.tab.is-active .zap { opacity: 1; }

.step-card { border-radius: var(--radius-sm); padding: clamp(14px, 1.4vw, 18px); }
.step-card .card-icon { margin-bottom: 11px; }
.step-card.is-lit {
  border-color: rgba(252, 253, 253, .3);
  background: linear-gradient(180deg, #1c1c1c, #151515);
}
.step-title { font: 500 13px/1.25 var(--font-d); letter-spacing: -.01em; color: var(--white); }
.step-card .card-desc { font-size: 11.5px; line-height: 1.5; margin-top: 8px; }

/* ── console ────────────────────────────────────────────────────── */
.console {
  background: linear-gradient(180deg, #111111, #0C0C0C);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: clip;
  box-shadow: 0 24px 80px rgba(0, 0, 0, .5);
}
.console-head {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: rgba(252, 253, 253, .015);
}
.console-dots { display: inline-flex; gap: 6px; }
.console-dots i {
  width: 9px; height: 9px; border-radius: 50%;
  background: #232323; border: 1px solid #333;
}
.console-title {
  font: 500 11px/1 var(--font-m);
  letter-spacing: .08em; color: var(--text-3);
}
.console-badge {
  margin-left: auto;
  display: inline-flex; align-items: center; gap: 6px;
  font: 500 9px/1 var(--font-m); letter-spacing: .16em;
  color: var(--text-4);
  border: 1px solid var(--border);
  border-radius: 999px; padding: 5px 10px;
}
.console-badge svg { width: 11px; height: 11px; }

.console-list { padding: 8px 6px; }
.console-item {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 14px; border-radius: 10px;
  transition: background .2s var(--ease);
}
.console-item:hover { background: rgba(252, 253, 253, .035); }
.console-item .glyph { width: 15px; height: 15px; color: var(--text-2); flex: none; }
.ci-name { font: 500 13px/1 var(--font-d); color: var(--white); letter-spacing: -.005em; }
.ci-tag {
  margin-left: auto;
  font: 400 10px/1 var(--font-m); letter-spacing: .1em;
  color: var(--text-4);
}
.console-item .chev { width: 13px; height: 13px; color: var(--text-4); flex: none; }

.console-key {
  display: flex; align-items: center; gap: 12px;
  margin: 6px 18px 0;
  padding: 12px 14px;
  border-top: 1px solid var(--border);
  font: 400 12px/1 var(--font-m);
}
.console-key .glyph { width: 13px; height: 13px; color: var(--text-4); flex: none; }
.ck-name { color: var(--text-2); letter-spacing: .04em; }
.ck-val { margin-left: auto; color: var(--text-4); letter-spacing: .18em; }

.console-input {
  display: flex; align-items: center; gap: 12px;
  margin: 14px 18px 0;
  padding: 13px 16px;
  background: rgba(252, 253, 253, .03);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}
.console-input:focus-within { border-color: rgba(252, 253, 253, .25); background: rgba(252, 253, 253, .05); }
.prompt { font: 600 13px/1 var(--font-m); color: var(--white); }
#cmdInput {
  flex: 1; min-width: 0;
  background: none; border: none; outline: none;
  font: 400 13px/1.4 var(--font-m);
  color: var(--white); caret-color: var(--white);
}
#cmdInput::placeholder { color: var(--text-4); }
.cmd-send { width: 30px; height: 30px; border-radius: 8px; color: var(--text-2); transition: color .2s, background .2s; flex: none; }
.cmd-send svg { width: 16px; height: 16px; margin: auto; }
.cmd-send:hover { color: var(--bg); background: var(--white); }

.console-out {
  margin: 14px 18px 18px;
  padding: 15px 17px;
  background: #050505;
  border: 1px solid rgba(252, 253, 253, .05);
  border-radius: 12px;
  font: 400 12px/1.7 var(--font-m);
  color: var(--text-2);
  overflow-x: auto;
  min-height: 118px;
}
.c-k    { color: var(--white); }
.c-s    { color: var(--text-2); }
.c-p    { color: var(--text-4); }
.c-cm   { color: var(--text-4); font-style: italic; }
.cmd-echo { color: var(--white); display: block; margin: 4px 0 8px; }

/* ── code card ──────────────────────────────────────────────────── */
.code-card {
  background: linear-gradient(180deg, #111111, #0C0C0C);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: clip;
}
.code-head {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(252, 253, 253, .015);
}
.code-title {
  font: 500 14.5px/1.35 var(--font-d);
  letter-spacing: -.015em; color: var(--white);
}
.copy-btn {
  display: inline-flex; align-items: center; gap: 7px;
  font: 500 10.5px/1 var(--font-m); letter-spacing: .12em; text-transform: uppercase;
  color: var(--text-3);
  border: 1px solid var(--border);
  border-radius: 999px; padding: 8px 14px;
  transition: color .25s, border-color .25s, background .25s;
  flex: none;
}
.copy-btn svg { width: 13px; height: 13px; }
.copy-btn:hover { color: var(--white); border-color: var(--border-2); background: rgba(252, 253, 253, .04); }
.copy-btn.is-done { color: var(--white); border-color: rgba(252, 253, 253, .3); }

.code-block {
  padding: 20px 22px;
  font: 400 12.5px/1.75 var(--font-m);
  color: var(--text-2);
  overflow-x: auto;
  tab-size: 2;
}
.c-kw  { color: #C9CCCB; font-weight: 500; }
.c-var { color: var(--white); }
.c-fn  { color: var(--white); }
.c-pr  { color: #C9CCCB; }
.c-s   { color: var(--text-2); }

/* ── footer ─────────────────────────────────────────────────────── */
.footer {
  max-width: var(--container);
  margin: clamp(64px, 10vh, 120px) auto 0;
  padding: clamp(40px, 6vh, 64px) var(--gutter) 30px;
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
}
.footer-tag {
  font: 400 14px/1.6 var(--font-d);
  color: var(--text-3);
  margin-top: 16px; max-width: 30ch;
}
.footer-col { display: grid; gap: 12px; align-content: start; }
.footer-col h4 {
  font: 500 10.5px/1 var(--font-m);
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--text-4);
  margin-bottom: 6px;
}
.footer-col a {
  font: 400 14px/1.4 var(--font-d);
  color: var(--text-2);
  transition: color .2s;
  width: fit-content;
}
.footer-col a:hover { color: var(--white); }
.footer-mail { font-family: var(--font-m); font-size: 13px; letter-spacing: .01em; }

.footer-base {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  flex-wrap: wrap;
  margin-top: clamp(36px, 5vh, 56px);
  padding-top: 22px;
  border-top: 1px solid rgba(252, 253, 253, .05);
  font: 400 12px/1.5 var(--font-m);
  color: var(--text-4);
}

/* ── reveal animations ──────────────────────────────────────────── */
[data-order] > * { }
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ── responsive ─────────────────────────────────────────────────── */
@media (max-width: 1180px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 980px) {
  /* single column — stack in the exact order of the mobile design */
  .layout { display: flex; flex-direction: column; gap: clamp(44px, 7vh, 76px); }
  .col { display: contents; }

  [data-order="1"] { order: 1; }
  [data-order="2"] { order: 2; }
  [data-order="3"] { order: 3; }
  [data-order="4"] { order: 4; }
  [data-order="5"] { order: 5; }
  [data-order="6"] { order: 6; }
  [data-order="7"] { order: 7; }
  [data-order="8"] { order: 8; }

  /* mobile design centers all display copy */
  .hero-text { text-align: center; }
  .hero-h1, .hero-h2 { white-space: normal; }
  .eyebrow { justify-content: center; }
  .section-h { text-align: center; }
  .section-p { text-align: center; margin-left: auto; margin-right: auto; }
  .how { text-align: center; }
  .logos-row { justify-content: center; }
  .tabs { margin-left: auto; margin-right: auto; }

  .orb-wrap {
    width: min(118vw, 640px);
    max-width: none;
    margin: clamp(-30px, -3vh, -6px) auto clamp(-120px, -13vh, -48px);
  }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav { height: 62px; --nav-h: 62px; }
  html { scroll-padding-top: 78px; }
}

@media (max-width: 359px) {
  .cards-4 { grid-template-columns: repeat(2, 1fr); }
  .tabs { width: 100%; justify-content: space-between; padding: 4px; }
  .tab { padding: 9px 10px; letter-spacing: .08em; }
  .logos-row { gap: 18px 26px; }
  .console-out, .code-block { font-size: 11px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 380px) {
  .cards-3 { grid-template-columns: 1fr; }
  .div-card { display: flex; align-items: center; gap: 14px; }
  .div-card .card-icon { margin: 0; width: 17px; height: 17px; flex: none; }
  .div-card .div-tag { margin: 0 0 3px; }
  .div-title { font-size: 13px; }
}

/* ── accessibility ──────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}