/* ==========================================================================
   Pyroxen Group — Design System
   Signature motif: faceted, cut-corner panels echoing the pyroxene crystal
   and the X blade mark. Palette pulled from brand assets: near-black void,
   brushed steel, electric arc-orange.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Color */
  --void: #05070c;
  --panel: #0c1119;
  --panel-2: #0f1520;
  --line: #1c2432;
  --line-soft: #161d29;
  --steel: #b9c3cf;
  --steel-dim: #7c8798;
  --arc-orange: #e2650c;
  --arc-orange-bright: #ff9d42;
  --deep-orange: #7a2a00;
  --white: #f3f5f8;

  /* Type */
  --font-display: 'Chakra Petch', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Facet cut sizes */
  --cut-lg: 22px;
  --cut-sm: 12px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

@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;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--void);
  color: var(--steel);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--white);
  margin: 0;
  letter-spacing: 0.01em;
  font-weight: 600;
}

p { margin: 0 0 1em; color: var(--steel-dim); }
p:last-child { margin-bottom: 0; }

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

:focus-visible {
  outline: 2px solid var(--arc-orange-bright);
  outline-offset: 3px;
}

/* Background texture: faint diagonal grid + radial glow */
body {
  background-image:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(226, 101, 12, 0.16), transparent 60%),
    radial-gradient(ellipse 700px 500px at 100% 20%, rgba(122, 42, 0, 0.18), transparent 55%),
    linear-gradient(var(--void), var(--void));
  background-attachment: fixed;
}

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- Facet utility: clipped-corner panel ---------- */
.facet {
  clip-path: polygon(
    var(--cut-lg) 0%, 100% 0%, 100% calc(100% - var(--cut-lg)),
    calc(100% - var(--cut-lg)) 100%, 0% 100%, 0% var(--cut-lg)
  );
  position: relative;
}

.facet-sm {
  clip-path: polygon(
    var(--cut-sm) 0%, 100% 0%, 100% calc(100% - var(--cut-sm)),
    calc(100% - var(--cut-sm)) 100%, 0% 100%, 0% var(--cut-sm)
  );
}

/* edge-lit border trick: a gradient border via padding box */
.facet-border {
  background: linear-gradient(var(--panel), var(--panel)) padding-box,
              linear-gradient(135deg, var(--arc-orange) 0%, var(--line) 30%, var(--line) 70%, var(--arc-orange) 100%) border-box;
  border: 1px solid transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 15px 26px 15px 22px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, color 0.18s ease, background 0.18s ease;
  clip-path: polygon(14px 0%, 100% 0%, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0% 100%, 0% 14px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--arc-orange) 0%, var(--deep-orange) 100%);
  color: var(--white);
}
.btn-primary:hover {
  box-shadow: 0 0 0 1px var(--arc-orange-bright), 0 8px 30px -8px rgba(226, 101, 12, 0.65);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--steel);
}
.btn-ghost:hover {
  border-color: var(--arc-orange);
  color: var(--white);
}

.btn-arrow { transition: transform 0.18s ease; }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ---------- Header / Nav ---------- */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(5, 7, 12, 0.78);
  border-bottom: 1px solid var(--line-soft);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  max-width: 1180px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand img { height: 46px; width: auto; }
.brand-word {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.04em;
}
.brand-word span { color: var(--arc-orange-bright); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel-dim);
  transition: color 0.18s ease;
  position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--arc-orange);
}

.nav-cta { display: flex; align-items: center; gap: 22px; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  color: var(--white);
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* ---------- Eyebrow ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--arc-orange-bright);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--arc-orange);
}

/* ---------- Hero ---------- */
.hero {
  padding: 108px 0 90px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  max-width: 720px;
  gap: 60px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.4rem, 4.6vw, 3.6rem);
  line-height: 1.08;
  margin-bottom: 22px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--arc-orange-bright), var(--arc-orange) 60%, var(--deep-orange));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  font-size: 17px;
  max-width: 46ch;
  color: var(--steel);
  margin-bottom: 34px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---------- Pillar strip ---------- */
.pillars {
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  padding: 34px 0;
}
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.pillar { text-align: left; }
.pillar .stat {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  color: var(--white);
  display: block;
  margin-bottom: 6px;
}
.pillar .label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--steel-dim);
}

/* ---------- Section shell ---------- */
section { padding: 96px 0; }
.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); margin-bottom: 16px; }
.section-head p { font-size: 16px; }

.section-alt { background: linear-gradient(180deg, rgba(15,21,32,0.5), rgba(12,17,25,0) 60%); }

/* ---------- Card grid ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  background: var(--panel);
  padding: 32px 28px 30px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
}
.card:hover { transform: translateY(-4px); }

.card-icon {
  width: 42px;
  height: 42px;
  margin-bottom: 22px;
  color: var(--arc-orange-bright);
}
.card-icon svg { width: 100%; height: 100%; }

.card h3 { font-size: 18px; margin-bottom: 12px; }
.card p { font-size: 14.5px; }
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--arc-orange-bright);
}

/* ---------- Tracks (sequential — numbering justified) ---------- */
.tracks {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line-soft);
}
.track {
  display: grid;
  grid-template-columns: 90px 1fr 200px;
  gap: 28px;
  align-items: center;
  padding: 28px 4px;
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.2s ease;
}
.track:hover { background: rgba(226,101,12,0.04); }
.track-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--arc-orange-bright);
  letter-spacing: 0.08em;
}
.track-num .dim { color: var(--steel-dim); }
.track-body h3 { font-size: 17px; margin-bottom: 6px; }
.track-body p { font-size: 14px; margin: 0; }
.track-tag {
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel-dim);
  border: 1px solid var(--line);
  padding: 6px 12px;
}
.track.capstone .track-tag { color: var(--arc-orange-bright); border-color: var(--arc-orange); }

/* ---------- Flow diagram ---------- */
.flow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 40px;
}
.flow-step {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--steel);
  border: 1px solid var(--line);
  padding: 12px 18px;
  background: var(--panel);
}
.flow-arrow {
  color: var(--arc-orange);
  padding: 0 12px;
  font-family: var(--font-mono);
}

/* ---------- Philosophy grid ---------- */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}
.diff {
  background: var(--panel);
  padding: 30px 26px;
}
.diff h3 {
  font-size: 15px;
  margin-bottom: 10px;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.diff h3::before {
  content: '';
  width: 7px;
  height: 7px;
  background: var(--arc-orange);
  flex-shrink: 0;
  transform: rotate(45deg);
}
.diff p { font-size: 13.5px; }

/* ---------- About / split ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.pull-quote {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  color: var(--white);
  line-height: 1.35;
  border-left: 2px solid var(--arc-orange);
  padding-left: 26px;
  margin: 28px 0;
}
.pull-quote span { color: var(--arc-orange-bright); }

.stat-block {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  margin-top: 10px;
}
.stat-block .facet-border { padding: 22px; }
.stat-block .stat-num {
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--white);
  display: block;
  margin-bottom: 4px;
}
.stat-block .stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--steel-dim);
}

/* ---------- CTA banner ---------- */
.cta-banner {
  padding: 80px 0;
  text-align: center;
  position: relative;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(226,101,12,0.06), transparent 70%);
}
.cta-banner h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); max-width: 640px; margin: 0 auto 30px; }
.cta-banner .btn { margin: 0 auto; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ---------- Footer ---------- */
footer {
  padding: 70px 0 34px;
  border-top: 1px solid var(--line-soft);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 56px;
}
.footer-brand .brand { margin-bottom: 16px; }
.footer-brand p { font-size: 13.5px; max-width: 32ch; }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--steel-dim);
  margin-bottom: 18px;
  font-weight: 500;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.footer-col a { font-size: 14px; color: var(--steel); transition: color 0.18s ease; }
.footer-col a:hover { color: var(--arc-orange-bright); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 28px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--steel-dim);
}

/* ---------- Page header (interior pages) ---------- */
.page-header {
  padding: 130px 0 60px;
  border-bottom: 1px solid var(--line-soft);
}
.page-header h1 { font-size: clamp(2rem, 4vw, 2.7rem); margin-bottom: 16px; }
.page-header p { max-width: 56ch; font-size: 16px; }

/* ---------- Form ---------- */
.form-shell {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}
form { display: flex; flex-direction: column; gap: 20px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel-dim);
}
.field input, .field select, .field textarea {
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 14.5px;
  padding: 13px 15px;
  transition: border-color 0.18s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--arc-orange);
}
.field textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 12.5px; color: var(--steel-dim); }

.contact-card {
  padding: 30px;
  margin-bottom: 18px;
}
.contact-card h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--steel-dim);
  margin-bottom: 10px;
  font-weight: 500;
}
.contact-card a.mail {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--arc-orange-bright);
}
.contact-card p { font-size: 13.5px; margin-top: 8px; }

/* ---------- Email copy button ---------- */
.email-row { display: inline-flex; align-items: center; gap: 8px; }
.copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  flex: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--steel-dim);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.copy-btn:hover { border-color: var(--arc-orange); color: var(--white); }
.copy-btn svg { width: 12px; height: 12px; }
.copy-btn .icon-check { display: none; }
.copy-btn.copied { border-color: #2fd675; color: #2fd675; }
.copy-btn.copied .icon-copy { display: none; }
.copy-btn.copied .icon-check { display: block; }
.footer-col .email-row a { font-size: 14px; }
.contact-card .email-row a.mail { font-size: 15px; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .pillars-grid { grid-template-columns: repeat(2, 1fr); row-gap: 26px; }
  .card-grid { grid-template-columns: 1fr 1fr; }
  .diff-grid { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .form-shell { grid-template-columns: 1fr; }
  .track { grid-template-columns: 60px 1fr; }
  .track-tag { display: none; }
}

@media (max-width: 680px) {
  .nav-links, .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: flex; }
  .card-grid { grid-template-columns: 1fr; }
  .diff-grid { grid-template-columns: 1fr; }
  .pillars-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  section { padding: 64px 0; }
  .hero { padding: 84px 0 60px; }
}

/* Mobile nav drawer */
.nav-drawer {
  position: fixed;
  inset: 0;
  background: var(--void);
  z-index: 60;
  display: none;
  flex-direction: column;
  padding: 26px 32px;
}
.nav-drawer.open { display: flex; }
.nav-drawer-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 50px; }
.nav-drawer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 28px; }
.nav-drawer a { font-family: var(--font-display); font-size: 24px; color: var(--white); }
.nav-drawer .btn { margin-top: 40px; align-self: flex-start; }