/* ===========================================================
   Zer0n Automation — design tokens (The Kinetic Schematic)
   Edit values here only. Never hardcode colors below.
   =========================================================== */
:root {
  /* Surfaces — darkest to lightest */
  --color-bg:            #10141a;
  --color-bg-low:        #181c22;
  --color-surface:       #1c2026;
  --color-surface-high:  #262a31;
  --color-surface-lowest:#0d1116;

  /* Brand / primary — signal green, used sparingly */
  --color-primary:            #2ae500;
  --color-primary-fixed:      #79ff5b;
  --color-primary-container:  #38fe12;
  --color-on-primary:         #022100;

  /* Secondary — amber: in progress / caution */
  --color-secondary:      #ffba3f;
  --color-secondary-dim:  #2a1a00;

  /* Error/defect — muted coral */
  --color-error:      #ffb4ab;
  --color-error-dim:  #370001;

  /* Text */
  --color-text:            #e2e8e0;
  --color-text-secondary:  #8d9b88;
  --color-disabled:        #444c42;

  /* Structure */
  --color-outline:          #84967e;
  --color-outline-variant:  rgba(59, 75, 55, 0.35);

  /* Type */
  --font-sans: "IBM Plex Sans", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 72px;
  --space-9: 112px;
  --container: 1140px;

  /* Shape & motion */
  --radius: 4px;
  --ease-snap: linear;
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-standard: 200ms;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 88px; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { margin: 0; color: var(--color-text); }
h1 { font-weight: 700; font-size: clamp(2.25rem, 4vw, 3.25rem); letter-spacing: -0.02em; line-height: 1.05; }
h2 { font-weight: 600; font-size: clamp(1.5rem, 2.5vw, 2rem); letter-spacing: -0.01em; line-height: 1.2; }
h3 { font-weight: 600; font-size: 1.125rem; line-height: 1.35; }
p { margin: 0; }

a { color: var(--color-primary); text-decoration: none; transition: color var(--duration-fast) var(--ease-snap); }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius);
}

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--space-5); }

.eyebrow, .badge, .mono {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
}
.eyebrow { color: var(--color-text-secondary); display: block; margin-bottom: var(--space-4); }
.muted { color: var(--color-text-secondary); }
.small { font-size: 0.875rem; }

/* --------------------------- grid texture --------------------------- */
.gridtex { position: relative; overflow: hidden; }
.gridtex::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(to right, var(--color-outline-variant) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(to bottom, var(--color-outline-variant) 0 1px, transparent 1px 44px);
  opacity: 0.5;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent);
}
.gridtex > * { position: relative; z-index: 1; }

/* --------------------------- buttons --------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 12px 24px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-snap),
              color var(--duration-fast) var(--ease-snap),
              border-color var(--duration-fast) var(--ease-snap);
}
.btn:hover { text-decoration: none; }

.btn-primary { background: var(--color-primary-fixed); color: var(--color-on-primary); }
.btn-primary:hover { background: linear-gradient(90deg, var(--color-primary-fixed), var(--color-primary-container)); }

.btn-outline { border-color: var(--color-outline); color: var(--color-primary); background: transparent; }
.btn-outline:hover { background: var(--color-surface-high); border-color: var(--color-primary); }

.textlink { color: var(--color-primary); font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem; }

/* --------------------------- nav --------------------------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--color-bg-low);
  border-bottom: 1px solid var(--color-outline-variant);
}
.nav-inner { display: flex; align-items: center; gap: var(--space-5); height: 68px; }
.brand { display: flex; align-items: center; gap: var(--space-3); margin-right: auto; }
.brand:hover { text-decoration: none; }
.brand img { height: 44px; width: auto; display: block; }
.nav-links { display: flex; align-items: center; gap: var(--space-6); }
.nav-links a {
  font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem;
  color: var(--color-text-secondary);
}
.nav-links a:hover { color: var(--color-primary); text-decoration: none; }
.nav-cta { display: inline-flex; }
.hamburger {
  display: none; background: transparent; border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius); padding: 8px; cursor: pointer; color: var(--color-text);
}
.hamburger:hover { background: var(--color-surface-high); }
.mobile-panel {
  display: none;
  position: fixed; inset: 68px 0 0 0; z-index: 49;
  background: var(--color-bg-low);
  padding: var(--space-6) var(--space-5);
  flex-direction: column; gap: var(--space-5);
  border-top: 1px solid var(--color-outline-variant);
}
.mobile-panel.open { display: flex; }
.mobile-panel a { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.875rem; color: var(--color-text-secondary); }
.mobile-panel a:hover { color: var(--color-primary); text-decoration: none; }

/* --------------------------- sections --------------------------- */
section { padding: var(--space-9) 0; }
.section-head { max-width: 720px; margin-bottom: var(--space-7); }
.section-head p { margin-top: var(--space-4); color: var(--color-text-secondary); }

.reveal { opacity: 0; transform: translateY(8px); transition: opacity var(--duration-standard) var(--ease-out), transform var(--duration-standard) var(--ease-out); }
.reveal.visible { opacity: 1; transform: none; }

/* --------------------------- hero --------------------------- */
.hero { padding-top: var(--space-8); padding-bottom: var(--space-9); border-bottom: 1px solid var(--color-outline-variant); }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: var(--space-8); align-items: center; }
.hero p.lead { margin-top: var(--space-5); color: var(--color-text-secondary); font-size: 1.0625rem; max-width: 56ch; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4); margin-top: var(--space-6); }
.hero-note { margin-top: var(--space-4); }

.badge {
  display: inline-flex; align-items: center; gap: var(--space-2);
  background: var(--color-surface-high);
  color: var(--color-secondary);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius);
  padding: 6px 12px;
  margin-bottom: var(--space-5);
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--color-secondary); animation: pulse 2s linear infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

.hero-visual { width: 100%; height: auto; }

/* --------------------------- cards --------------------------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius);
  padding: var(--space-6);
  transition: border-color var(--duration-fast) var(--ease-snap), background-color var(--duration-fast) var(--ease-snap);
}
.card:hover { border-color: var(--color-outline); }
.card h3 { margin-top: var(--space-4); }
.card p { margin-top: var(--space-3); color: var(--color-text-secondary); }

.icon { width: 28px; height: 28px; stroke: var(--color-outline); stroke-width: 1.5; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.icon-amber { stroke: var(--color-secondary); }
.icon-coral { stroke: var(--color-error); }
.icon-green { stroke: var(--color-primary); }

.pullquote {
  margin-top: var(--space-7);
  border-left: 2px solid var(--color-outline-variant);
  padding: var(--space-2) 0 var(--space-2) var(--space-5);
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  font-weight: 500;
  color: var(--color-text);
}

/* --------------------------- vision flow --------------------------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: var(--space-7); }
.flow-step { position: relative; padding: var(--space-5) var(--space-4) 0 0; }
.flow-step::before {
  content: ""; position: absolute; top: 6px; left: 0; right: 0; height: 1px; background: var(--color-outline-variant);
}
.flow-step:last-child::before { right: auto; width: 12px; }
.flow-node { position: absolute; top: 1px; left: 0; width: 11px; height: 11px; border-radius: 50%; background: var(--color-primary); box-shadow: 0 0 12px rgba(42, 229, 0, 0.35); }
.flow-step .num { font-family: var(--font-mono); font-size: 0.6875rem; letter-spacing: 0.08em; color: var(--color-text-secondary); }
.flow-step .label { margin-top: var(--space-2); font-weight: 500; padding-right: var(--space-5); line-height: 1.4; }
.flow-step .label .small { display: block; margin-top: var(--space-2); }

/* --------------------------- focus section --------------------------- */
.focus-card { position: relative; overflow: hidden; padding: var(--space-8); }
.focus-card::after {
  content: ""; position: absolute; top: -70px; right: -70px; width: 240px; height: 240px;
  background: radial-gradient(circle, rgba(42, 229, 0, 0.18), transparent 70%);
  filter: blur(12px); pointer-events: none;
}
.focus-card h3 { font-size: clamp(1.375rem, 2.4vw, 1.75rem); }
.focus-card .eyebrow { color: var(--color-secondary); }

.sectors { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); margin-top: var(--space-5); }
.sector {
  display: flex; align-items: center; gap: var(--space-3);
  background: var(--color-surface-lowest);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius);
  padding: var(--space-4);
  transition: border-color var(--duration-fast) var(--ease-snap);
}
.sector:hover { border-color: var(--color-outline); }
.sector span { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.6875rem; color: var(--color-text-secondary); }

/* --------------------------- callout --------------------------- */
.callout {
  position: relative; overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius);
  padding: var(--space-8);
  text-align: center;
}
.callout::after {
  content: ""; position: absolute; bottom: -90px; left: -60px; width: 280px; height: 280px;
  background: radial-gradient(circle, rgba(42, 229, 0, 0.16), transparent 70%);
  filter: blur(14px); pointer-events: none;
}
.callout p { max-width: 62ch; margin: var(--space-4) auto 0; color: var(--color-text-secondary); }
.callout .btn { margin-top: var(--space-6); }
.callout .contactline { margin-top: var(--space-4); }

/* --------------------------- contact --------------------------- */
.contact-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: var(--space-5); }
.detail { display: flex; gap: var(--space-3); align-items: flex-start; padding: var(--space-4) 0; border-bottom: 1px solid var(--color-outline-variant); }
.detail:last-of-type { border-bottom: none; }
.detail .k { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.6875rem; color: var(--color-text-secondary); }
.detail .v { color: var(--color-text); }
.detail a { color: var(--color-primary); }

.socials { display: flex; gap: var(--space-3); margin-top: var(--space-5); }
.socials a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border: 1px solid var(--color-outline-variant); border-radius: var(--radius);
  transition: border-color var(--duration-fast) var(--ease-snap), background-color var(--duration-fast) var(--ease-snap);
}
.socials a:hover { border-color: var(--color-primary); background: var(--color-surface-high); }
.socials a:hover .icon { stroke: var(--color-primary); }

.field { display: block; margin-bottom: var(--space-5); }
.field .k { display: block; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.6875rem; color: var(--color-text-secondary); margin-bottom: var(--space-2); }
.field input, .field textarea {
  width: 100%;
  background: var(--color-surface-high);
  color: var(--color-text);
  border: none;
  border-bottom: 1px solid var(--color-outline-variant);
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 12px 14px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  transition: border-color var(--duration-fast) var(--ease-snap), background-color var(--duration-fast) var(--ease-snap);
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field textarea:focus {
  outline: none;
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: 11px;
}
.field.invalid input, .field.invalid textarea { border-bottom-color: var(--color-error); }
.field .err { display: none; margin-top: var(--space-2); font-size: 0.8125rem; color: var(--color-error); }
.field.invalid .err { display: block; }
.form-note { margin-top: var(--space-4); }

/* --------------------------- footer --------------------------- */
.footer { background: var(--color-bg-low); border-top: 1px solid var(--color-outline-variant); padding: var(--space-7) 0; }
.footer-inner { display: flex; flex-wrap: wrap; gap: var(--space-5); justify-content: space-between; align-items: flex-start; }
.footer img { height: 28px; width: auto; display: block; }
.footer .name { margin-top: var(--space-3); font-weight: 600; }
.footer .tagline { color: var(--color-primary); font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.6875rem; margin-top: var(--space-2); }
.footer-links { display: flex; gap: var(--space-5); }
.footer-links a { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.6875rem; color: var(--color-text-secondary); }
.footer-links a:hover { color: var(--color-primary); text-decoration: none; }
.footer-bottom { margin-top: var(--space-6); padding-top: var(--space-4); border-top: 1px solid var(--color-outline-variant); display: flex; flex-wrap: wrap; gap: var(--space-3); justify-content: space-between; }
.footer-bottom p { font-family: var(--font-mono); font-size: 0.6875rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-secondary); }

/* --------------------------- responsive --------------------------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-7); }
  .cards { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(2, 1fr); row-gap: var(--space-5); }
  .sectors { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  section { padding: var(--space-8) 0; }
}
@media (max-width: 720px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: inline-flex; }
  .flow { grid-template-columns: 1fr; }
  .focus-card, .callout { padding: var(--space-6); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .badge .dot { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { transition: none !important; }
}

/* =====================================================
   Additions for full-site build (Platform / Value / Industries / Vision)
   Extends the existing design tokens only — no new colors introduced.
   ===================================================== */

/* 5-step platform flow */
.flow-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; margin-top: var(--space-7); }
.flow-5 .flow-step { padding-right: var(--space-3); }
.flow-5 .flow-step:last-child::before { right: 0; width: auto; }

/* Value columns */
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); margin-top: var(--space-2); }
.value-col {
  background: var(--color-surface);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius);
  padding: var(--space-6);
  transition: border-color var(--duration-fast) var(--ease-snap);
}
.value-col:hover { border-color: var(--color-outline); }
.value-label {
  font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem;
  display: inline-block; padding: 4px 10px; border-radius: var(--radius);
  border: 1px solid var(--color-outline-variant);
}
.value-label.reduce { color: var(--color-error); }
.value-label.improve { color: var(--color-secondary); }
.value-label.prevent { color: var(--color-primary); }
.value-list { list-style: none; margin: var(--space-5) 0 0; padding: 0; display: grid; gap: var(--space-3); }
.value-list li { display: flex; align-items: flex-start; gap: var(--space-3); color: var(--color-text); font-size: 0.9375rem; }
.value-list .marker { flex: none; width: 8px; height: 8px; border-radius: 50%; margin-top: 7px; }
.value-col.reduce .marker { background: var(--color-error); }
.value-col.improve .marker { background: var(--color-secondary); }
.value-col.prevent .marker { background: var(--color-primary); }

/* Industries featured card reuses .focus-card; sub grid reuses .sectors */

/* Vision banner */
.banner {
  position: relative; overflow: hidden;
  display: flex; align-items: center; gap: var(--space-6);
  background: var(--color-surface);
  border: 1px solid rgba(42, 229, 0, 0.35);
  border-radius: var(--radius);
  padding: var(--space-7);
  margin-top: var(--space-7);
}
.banner::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 15% 30%, rgba(42, 229, 0, 0.12), transparent 60%);
  pointer-events: none;
}
.banner-icon { flex: none; width: 64px; height: 64px; position: relative; z-index: 1; }
.banner-text { position: relative; z-index: 1; }
.banner-text h3 { font-size: clamp(1.25rem, 2.2vw, 1.625rem); color: var(--color-primary); }
.banner-text p { margin-top: var(--space-2); color: var(--color-text-secondary); }

@media (max-width: 960px) {
  .flow-5 { grid-template-columns: repeat(2, 1fr); row-gap: var(--space-5); }
  .value-grid { grid-template-columns: 1fr; }
  .banner { flex-direction: column; align-items: flex-start; padding: var(--space-6); }
}
@media (max-width: 720px) {
  .flow-5 { grid-template-columns: 1fr; }
}