/* Thermagia Engineering — honeycomb thermal cells
   Palette from the logo mark: indigo T on near-white. */

:root {
  --ink: #302c50;
  --ink-mid: #3a3560;
  --ink-deep: #1c1930;
  --ink-darkest: #141122;
  --glow: #5a528c;
  --glow-2: #7a74a8;
  --paper: #f6f5fa;
  --paper-2: #eeedf4;
  --white: #fbfbfe;
  --line: #d5d2e2;
  --line-ink: #4a4568;
  --on-dark: #f6f5fa;
  --on-dark-dim: #d5d1e2;
  --muted: #5c5874;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --maxw: 1120px;
  --header-h: 72px;
  --hex-w: 210px;
  --display: "Orbitron", system-ui, sans-serif;
  --sans: "Assistant", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

html, body { overflow-x: hidden; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .brand-lock, .cell-idx, .step-n, .fact-k, .eyebrow, .kicker, .core-label, .core-sub {
  font-family: var(--display);
  letter-spacing: 0.04em;
  line-height: 1.12;
  margin: 0;
  font-weight: 700;
}

h1 { font-size: clamp(1.85rem, 4.4vw, 3.15rem); font-weight: 700; letter-spacing: 0.02em; }
h2 { font-size: clamp(1.45rem, 2.8vw, 2.15rem); }
h3 { font-size: 1.02rem; letter-spacing: 0.06em; text-transform: uppercase; }

p { margin: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--ink); color: var(--on-dark); padding: 10px 16px; font-weight: 700;
}
.skip-link:focus { left: 0; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 22px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
    background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.btn-primary {
  background: var(--on-dark); color: var(--ink);
  box-shadow: 0 10px 24px -12px rgba(246, 245, 250, .45);
}
.btn-ghost {
  background: transparent; color: var(--on-dark); border-color: rgba(246, 245, 250, .35);
}
.band-paper .btn-primary {
  background: var(--ink); color: var(--on-dark);
  box-shadow: 0 10px 24px -12px rgba(48, 44, 80, .45);
}

/* Header: always dark so text stays near-white */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--header-h);
  background: rgba(28, 25, 48, .55);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: background .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.site-header.scrolled {
  background: rgba(20, 17, 34, .96);
  border-bottom-color: rgba(246, 245, 250, .08);
  box-shadow: 0 10px 28px -18px rgba(0, 0, 0, .55);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h); gap: 16px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--on-dark); }
.brand img {
  width: 40px; height: 40px; object-fit: cover;
  background: #fff; border-radius: 8px;
}
.brand-lock { display: flex; flex-direction: column; line-height: 1.05; }
.brand-lock strong {
  font-size: 14px; letter-spacing: .16em; text-transform: uppercase; font-weight: 700;
}
.brand-lock em {
  font-style: normal; font-size: 9px; letter-spacing: .28em; text-transform: uppercase;
  color: var(--on-dark-dim); font-weight: 500;
}

.nav { display: flex; align-items: center; gap: 22px; }
.nav a {
  font-family: var(--display);
  font-size: 11px; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--on-dark-dim);
  transition: color .2s var(--ease), transform .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}
.nav .nav-cta {
  color: var(--ink); background: var(--on-dark);
  padding: 8px 14px;
}
.nav-toggle {
  display: none; width: 42px; height: 42px; border: 1px solid rgba(246, 245, 250, .28);
  border-radius: 8px; background: transparent; padding: 10px; cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; background: var(--on-dark); margin: 5px 0; transition: transform .3s var(--ease), opacity .3s var(--ease); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-darkest);
  color: var(--on-dark);
  padding: 118px 0 72px;
  min-height: 92vh;
  display: flex; align-items: center;
}
.lattice {
  position: absolute; inset: -8% -6% -12% -6%;
  width: 112%; height: 120%;
  pointer-events: none;
}
.hx {
  fill: rgba(90, 82, 140, 0.10);
  stroke: rgba(180, 176, 210, 0.28);
  stroke-width: 1;
  animation: heatPulse 5.2s ease-in-out infinite;
  animation-delay: var(--d, 0s);
}
.hx-hot {
  fill: rgba(90, 82, 140, 0.22);
  animation-name: heatPulseHot;
}
@keyframes heatPulse {
  0%, 100% { fill-opacity: 0.35; stroke-opacity: 0.28; }
  50% { fill-opacity: 1; stroke-opacity: 0.85; }
}
@keyframes heatPulseHot {
  0%, 100% { fill: rgba(90, 82, 140, 0.16); stroke: rgba(180, 176, 210, 0.28); }
  50% { fill: rgba(122, 116, 168, 0.62); stroke: rgba(246, 245, 250, 0.55); }
}
.hero-veil {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 48% 62% at 78% 42%, rgba(90, 82, 140, .32), transparent 64%),
    linear-gradient(90deg, rgba(20, 17, 34, .88) 0%, rgba(20, 17, 34, .55) 48%, rgba(20, 17, 34, .28) 100%);
}

.hero-inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 28px; align-items: center;
  width: 100%;
}
.eyebrow {
  display: inline-block;
  font-size: 11px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--glow-2); margin: 0 0 16px; font-weight: 600;
}
.hero h1 { max-width: 16ch; color: var(--on-dark); }
.lede {
  font-size: clamp(1.02rem, 1.5vw, 1.14rem);
  color: var(--on-dark-dim); margin: 20px 0 0; max-width: 50ch;
}
.hero-actions { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }

.reactor { display: grid; place-items: center; }
.reactor-svg { width: min(420px, 100%); height: auto; overflow: visible; }
.ring {
  fill: none;
  stroke: rgba(180, 176, 210, .35);
  stroke-width: 1.2;
  transform-box: fill-box;
  transform-origin: center;
  animation: ringPulse 4.6s ease-in-out infinite;
}
.r4 { animation-duration: 7.2s; stroke-opacity: .25; }
.r3 { animation-duration: 6.1s; animation-delay: .2s; }
.r2 { animation-duration: 5.2s; animation-delay: .4s; stroke: var(--glow-2); }
.r1 { animation-duration: 4.4s; animation-delay: .55s; stroke: var(--on-dark); stroke-width: 1.4; }
.core {
  fill: rgba(90, 82, 140, .55);
  stroke: var(--on-dark);
  stroke-width: 1.4;
  animation: coreGlow 3.2s ease-in-out infinite;
}
.core-label {
  fill: var(--on-dark);
  font-size: 13px;
  letter-spacing: .28em;
  font-family: var(--display);
}
.core-sub {
  fill: var(--on-dark-dim);
  font-size: 8px;
  letter-spacing: .32em;
  font-family: var(--display);
}
@keyframes ringPulse {
  0%, 100% { opacity: .45; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.035); }
}
@keyframes coreGlow {
  0%, 100% { fill: rgba(90, 82, 140, .42); }
  50% { fill: rgba(122, 116, 168, .88); }
}

/* Strip */
.strip {
  background: var(--ink);
  color: var(--on-dark);
  overflow: hidden;
  border-block: 1px solid rgba(246, 245, 250, .08);
  padding: 14px 0;
}
.strip-track {
  display: flex; align-items: center; gap: 22px;
  width: max-content; white-space: nowrap;
  font-family: var(--display);
  font-size: 11px; font-weight: 600;
  letter-spacing: .2em; text-transform: uppercase;
  animation: marquee 36s linear infinite;
}
.hexdot {
  width: 10px; height: 11px;
  background: var(--glow-2);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  flex: 0 0 auto;
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* Bands */
.band { padding: 88px 0; scroll-margin-top: 84px; }
.band-paper { background: var(--paper); color: var(--ink); }
.band-ink { background: var(--ink-deep); color: var(--on-dark); }
.band-quote {
  background: var(--ink-darkest);
  color: var(--on-dark);
  padding: 96px 0;
}

.kicker {
  font-size: 11px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--glow); margin: 0 0 12px; font-weight: 600;
}
.kicker-light { color: var(--glow-2); }
.section-head { max-width: 62ch; margin: 0 auto 48px; text-align: center; }
.section-head h2 { margin-bottom: 12px; }
.lead { color: var(--muted); font-size: 1.05rem; }
.band-ink .lead, .band-quote .lead { color: var(--on-dark-dim); }

/* Honeycomb service cells */
.comb {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}
.comb-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}
.comb-row + .comb-row {
  margin-top: calc(var(--hex-w) * -0.27);
}

.cell {
  width: var(--hex-w);
  filter: drop-shadow(0 14px 22px rgba(48, 44, 80, .16));
  transition: transform .3s var(--ease), filter .3s var(--ease);
}
.cell-face {
  width: 100%;
  aspect-ratio: 1 / 1.1547;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  background:
    radial-gradient(circle at 50% 38%, rgba(90, 82, 140, .16), transparent 58%),
    var(--ink);
  color: var(--on-dark);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 28% 16% 24%;
  transition: background .3s var(--ease);
}
.cell-core .cell-face {
  background:
    radial-gradient(circle at 50% 42%, rgba(122, 116, 168, .55), transparent 60%),
    var(--ink-mid);
  animation: cellHeat 4s ease-in-out infinite;
}
@keyframes cellHeat {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.18); }
}
.cell-idx {
  font-family: var(--sans);
  font-size: 12px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--glow-2); margin-bottom: 8px; font-weight: 700;
}
.cell h3 { color: var(--on-dark); margin-bottom: 8px; }
.cell p {
  font-size: 13.5px; line-height: 1.45;
  color: var(--on-dark-dim);
}

/* Practice */
.practice-inner {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: start;
}
.practice-copy h2 { margin-bottom: 18px; color: var(--on-dark); }
.practice-copy p { color: var(--on-dark-dim); margin-bottom: 14px; max-width: 58ch; }
.fact-hexes {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.fact-hexes li {
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  background: var(--ink);
  min-height: 150px;
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  text-align: center;
  padding: 28px 16px 22px;
  transition: transform .3s var(--ease), background .3s var(--ease), filter .3s var(--ease);
  filter: drop-shadow(0 10px 18px rgba(0,0,0,.18));
}
.fact-k {
  font-size: 10px; letter-spacing: .2em; text-transform: uppercase;
  color: var(--glow-2); margin-bottom: 8px;
}
.fact-hexes strong {
  font-family: var(--display);
  font-size: 1.05rem; letter-spacing: .06em;
  color: var(--on-dark);
}

/* Method steps as hex tiles */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.step {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 26px 22px 24px;
  clip-path: polygon(18px 0, calc(100% - 18px) 0, 100% 18px, 100% calc(100% - 18px), calc(100% - 18px) 100%, 18px 100%, 0 calc(100% - 18px), 0 18px);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.step-n {
  display: block;
  font-family: var(--sans);
  font-size: 12px; letter-spacing: .2em; font-weight: 700;
  color: var(--glow); margin-bottom: 12px;
}
.step h3 { margin-bottom: 10px; color: var(--ink); }
.step p { color: var(--muted); font-size: .96rem; }

/* Quote */
.quote-inner { max-width: 46rem; margin: 0 auto; text-align: center; }
.quote-mark {
  display: block;
  font-family: var(--display);
  font-size: 4.5rem; line-height: 1;
  color: var(--glow-2); opacity: .7;
}
.quote-inner blockquote {
  font-family: var(--display);
  font-size: clamp(1.2rem, 2.4vw, 1.7rem);
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.4;
  color: var(--on-dark);
  margin: 0 0 18px;
}
.quote-attr {
  font-family: var(--display);
  font-size: 11px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--on-dark-dim);
}

/* FAQ */
.faq-wrap { display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: start; }
.faq-head { text-align: left; margin: 0; }
.faq-item {
  border-bottom: 1px solid var(--line);
  transition: background .25s var(--ease), box-shadow .25s var(--ease);
}
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  background: none; border: 0; cursor: pointer; text-align: left; color: var(--ink);
  font-family: var(--display); font-size: .95rem; font-weight: 600;
  letter-spacing: .04em; padding: 20px 4px;
}
.faq-ico { position: relative; flex: 0 0 auto; width: 16px; height: 16px; }
.faq-ico::before, .faq-ico::after {
  content: ""; position: absolute; background: var(--glow); border-radius: 2px;
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.faq-ico::before { top: 7px; left: 0; width: 16px; height: 2px; }
.faq-ico::after { top: 0; left: 7px; width: 2px; height: 16px; }
.faq-item.open .faq-ico::after { transform: scaleY(0); opacity: 0; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-item.open .faq-a { max-height: 280px; }
.faq-a p { color: var(--muted); margin: 0; padding: 0 4px 20px; font-size: .98rem; }

/* Contact */
.contact-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact-copy h2 { margin-bottom: 16px; color: var(--on-dark); }
.contact-copy p { color: var(--on-dark-dim); margin-bottom: 20px; max-width: 46ch; }
.contact-email {
  display: inline-block;
  font-family: var(--display);
  font-size: clamp(1rem, 2vw, 1.25rem);
  letter-spacing: .04em;
  color: var(--on-dark);
  border-bottom: 1px solid rgba(246, 245, 250, .35);
  padding-bottom: 4px;
  transition: border-color .2s, transform .25s var(--ease);
}
.contact-meta { margin-top: 16px; font-size: .95rem; color: var(--on-dark-dim); }
.contact-form {
  background: var(--ink);
  border: 1px solid var(--line-ink);
  padding: 28px;
  display: grid; gap: 16px;
}
.field { display: grid; gap: 7px; }
.field label {
  font-family: var(--display);
  font-size: 11px; letter-spacing: .16em; text-transform: uppercase;
  color: var(--on-dark-dim); font-weight: 600;
}
.field input, .field textarea {
  background: var(--ink-deep); border: 1px solid var(--line-ink);
  color: var(--on-dark);
  padding: 12px 14px; font: inherit; font-size: 15px; width: 100%; resize: vertical;
  transition: border-color .2s var(--ease);
}
.field input::placeholder, .field textarea::placeholder { color: #9a96b0; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--glow-2); }

/* Footer */
.site-footer {
  background: var(--ink-darkest);
  color: var(--on-dark);
  padding: 54px 0 28px;
  border-top: 1px solid rgba(246, 245, 250, .08);
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 28px; flex-wrap: wrap;
  padding-bottom: 32px; border-bottom: 1px solid rgba(246, 245, 250, .08);
}
.footer-tag { color: var(--on-dark-dim); margin: 12px 0 0; font-size: .95rem; max-width: 36ch; }
.footer-nav { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-nav a { color: var(--on-dark-dim); font-size: 15px; transition: color .2s; }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  color: var(--on-dark-dim); font-size: 14px; padding-top: 20px;
}

/* Reveal MUST sit before hover transforms */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .hx, .hx-hot, .ring, .core, .cell-core .cell-face, .strip-track { animation: none !important; }
}

/* Hover AFTER .reveal.in so lift is not overwritten */
@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 32px -12px rgba(246, 245, 250, .55);
  }
  .btn-ghost:hover {
    transform: translateY(-3px);
    border-color: var(--on-dark);
    background: rgba(246, 245, 250, .08);
  }
  .nav a:hover { color: var(--on-dark); }
  .nav .nav-cta:hover {
    transform: translateY(-2px);
    background: var(--white);
  }
  .cell:hover {
    transform: translateY(-8px);
    filter: drop-shadow(0 22px 32px rgba(90, 82, 140, .45));
  }
  .cell:hover .cell-face {
    background:
      radial-gradient(circle at 50% 40%, rgba(122, 116, 168, .55), transparent 62%),
      var(--ink-mid);
  }
  .fact-hexes li:hover {
    transform: translateY(-6px);
    background: var(--ink-mid);
  }
  .step:hover {
    transform: translateY(-6px);
    border-color: var(--ink);
    box-shadow: 0 18px 32px -20px rgba(48, 44, 80, .45);
  }
  .faq-q:hover { color: var(--glow); }
  .faq-item:hover { background: var(--white); }
  .contact-email:hover { border-bottom-color: var(--on-dark); transform: translateY(-2px); }
  .footer-nav a:hover { color: var(--on-dark); }
  .contact-form .btn-primary:hover { transform: translateY(-2px); }
}

/* Responsive */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; gap: 22px; }
  .reactor { order: -1; }
  .reactor-svg { width: min(320px, 78vw); }
  .hero { min-height: 0; padding: 112px 0 56px; }
  .hero h1 { max-width: none; }
  .practice-inner, .faq-wrap, .contact-inner { grid-template-columns: 1fr; gap: 32px; }
  .faq-head { text-align: left; }
  .steps { grid-template-columns: 1fr 1fr; }
  .comb-row + .comb-row { margin-top: calc(var(--hex-w) * -0.22); }
}

@media (max-width: 720px) {
  .nav-toggle { display: flex; flex-direction: column; justify-content: center; }
  .nav {
    position: fixed; inset: var(--header-h) 0 auto 0; flex-direction: column; gap: 4px; align-items: stretch;
    background: rgba(20, 17, 34, .98); backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(246, 245, 250, .1);
    padding: 12px 24px 22px; transform: translateY(-120%); transition: transform .35s var(--ease); z-index: 90;
  }
  .nav.open { transform: translateY(0); }
  .nav a { padding: 12px 4px; font-size: 13px; border-bottom: 1px solid rgba(246, 245, 250, .1); color: var(--on-dark); }
  .nav .nav-cta { text-align: center; margin-top: 10px; color: var(--ink); }
  .band { padding: 68px 0; }
  .band-quote { padding: 72px 0; }
  .comb-row {
    flex-direction: column;
    align-items: center;
    gap: 18px;
  }
  .comb-row + .comb-row { margin-top: 18px; }
  .cell { width: min(280px, 82vw); }
  .steps { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .wrap { padding: 0 18px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .footer-inner { flex-direction: column; }
  .header-inner { height: 68px; }
  .site-header, :root { --header-h: 68px; }
  .nav { inset: 68px 0 auto 0; }
  .fact-hexes { grid-template-columns: 1fr 1fr; gap: 10px; }
  .fact-hexes li { min-height: 128px; padding: 22px 10px 18px; }
  .contact-form { padding: 20px; }
}

@media (max-width: 390px) {
  .wrap { padding: 0 16px; }
  .hero { padding: 104px 0 48px; }
  .hero h1 { font-size: 1.7rem; }
  .band { padding: 56px 0; }
  .cell { width: min(260px, 84vw); }
  .comb-row { gap: 14px; }
  .comb-row + .comb-row { margin-top: 14px; }
  .cell p { font-size: 13px; }
  .section-head { margin-bottom: 32px; }
}