/* ===================================================================
   CORXIT™ — Design System
   Obsidian & Orange · "Correction, not heat"
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter+Tight:wght@500;600;700;800&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@500;600&display=swap');

:root {
  /* ---- Locked brand colors ---- */
  --obsidian: #0D0E10;
  --obsidian-raised: #17181B;
  --obsidian-line: #2A2C30;
  --white: #FFFFFF;
  --white-soft: rgba(255,255,255,.72);
  --white-faint: rgba(255,255,255,.46);
  --orange: #FF7A1A;
  --orange-hot: #FF4D00;
  --slate: #4A5A66;
  --silver: #A8B0B7;

  /* ---- Type ---- */
  --font-display: 'Inter Tight', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  /* ---- Scale ---- */
  --max-width: 1320px;
  --text-width: 700px;
  --radius: 3px;

  /* ---- Motion ---- */
  --ease: cubic-bezier(.2,.8,.2,1);
}

/* ---------------------------------------------------------------
   Reset
--------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}
body {
  margin: 0;
  background: var(--obsidian);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  position: relative;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.12; margin: 0; letter-spacing: -.01em; }
p { margin: 0; }
button { font-family: inherit; cursor: pointer; }

/* ---------------------------------------------------------------
   Texture layer — grain + radial glow + engineering grid
   (applied once, fixed, behind all content)
--------------------------------------------------------------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 18% 8%, rgba(255,122,26,.05), transparent 42%),
    radial-gradient(circle at 88% 74%, rgba(255,255,255,.035), transparent 40%);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.grid-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
                     linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size: 48px 48px;
  z-index: 0;
}

main, header, footer { position: relative; z-index: 1; }

/* ---------------------------------------------------------------
   Layout helpers
--------------------------------------------------------------- */
.wrap { max-width: var(--max-width); margin: 0 auto; padding: 0 32px; }
.prose { max-width: var(--text-width); }
.section { padding: 120px 0; position: relative; }
.section--tight { padding: 72px 0; }
@media (max-width: 720px) {
  .wrap { padding: 0 20px; }
  .section { padding: 72px 0; }
  .section--tight { padding: 48px 0; }
}
.hairline { border: none; border-top: 1px solid var(--obsidian-line); margin: 0; }
.divider-fade {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--obsidian-line) 25%, var(--obsidian-line) 75%, transparent);
  border: none;
}

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

/* ---------------------------------------------------------------
   Buttons
--------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 30px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .01em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform .28s var(--ease), background .28s var(--ease), border-color .28s var(--ease), box-shadow .28s var(--ease);
}
.btn--primary {
  background: var(--orange);
  color: var(--obsidian);
}
.btn--primary:hover {
  background: var(--orange-hot);
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px var(--orange-hot), 0 12px 28px -10px rgba(255,77,0,.55);
}
.btn--ghost {
  background: transparent;
  border-color: var(--obsidian-line);
  color: var(--white);
}
.btn--ghost:hover { border-color: var(--white-soft); transform: translateY(-2px); }
.btn--sm { padding: 12px 22px; font-size: 13.5px; }

/* ---------------------------------------------------------------
   Header / Nav
--------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13,14,16,.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--obsidian-line);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { height: 26px; width: auto; }
.brand span { font-family: var(--font-display); font-weight: 800; font-size: 19px; letter-spacing: .01em; }
.brand span em { color: var(--orange); font-style: normal; }
.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--white-soft);
  transition: color .2s var(--ease);
  white-space: nowrap;
}
.nav-links a:hover { color: var(--white); }
.nav-cta { display: flex; align-items: center; gap: 18px; }
.nav-phone { font-family: var(--font-mono); font-size: 13px; color: var(--white-faint); }
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
}
.nav-burger span { width: 22px; height: 2px; background: var(--white); display: block; }
.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 2px;
  padding: 8px 0 20px;
}
.mobile-menu.is-open { display: flex; }
.mobile-menu a {
  padding: 14px 0;
  border-bottom: 1px solid var(--obsidian-line);
  font-size: 15px;
  color: var(--white-soft);
}
@media (max-width: 900px) {
  .nav-links, .nav-phone { display: none; }
  .nav-burger { display: flex; }
}

/* ---------------------------------------------------------------
   Hero
--------------------------------------------------------------- */
.hero {
  padding: 96px 0 100px;
  position: relative;
  overflow: hidden;
}
.hero__eyebrow { color: var(--orange); }
.hero h1 {
  font-size: clamp(38px, 6vw, 76px);
  max-width: 920px;
}
.hero h1 em {
  font-style: normal;
  color: var(--orange);
  display: block;
}
.hero .sub {
  margin-top: 26px;
  max-width: var(--text-width);
  font-size: 19px;
  color: var(--white-soft);
}
.hero .cta-row { margin-top: 40px; display: flex; gap: 16px; flex-wrap: wrap; }

/* Stat row */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--obsidian-line);
  border: 1px solid var(--obsidian-line);
  margin-top: 80px;
}
.stat {
  background: var(--obsidian);
  padding: 28px 24px;
}
.stat .num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 600;
  color: var(--white);
}
.stat .num.count-up { transition: color .4s var(--ease); }
.stat .label {
  margin-top: 6px;
  font-size: 12.5px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--white-faint);
}
@media (max-width: 720px) {
  .stat-row { grid-template-columns: repeat(2, 1fr); }
}

/* ---------------------------------------------------------------
   Section headers
--------------------------------------------------------------- */
.section-head { max-width: 760px; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(28px, 4vw, 46px); }
.section-head .sub { margin-top: 16px; color: var(--white-soft); font-size: 17px; }

/* ---------------------------------------------------------------
   Glass panel cards
--------------------------------------------------------------- */
.card {
  background: rgba(255,255,255,.025);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 36px;
  backdrop-filter: blur(14px);
  transition: transform .28s var(--ease), border-color .28s var(--ease);
}
.card:hover { transform: translateY(-3px); border-color: rgba(255,255,255,.16); }
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 900px) { .card-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .card-grid { grid-template-columns: 1fr; } }

/* accent-border finding card (used across findings, deliverables detail) */
.finding {
  border-left: 2px solid var(--orange);
  padding: 18px 22px;
  background: rgba(255,255,255,.02);
}
.finding + .finding { margin-top: 14px; }
.finding .tag { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--orange); }
.finding p { margin-top: 8px; color: var(--white-soft); font-size: 15px; }

/* ---------------------------------------------------------------
   Numbered chapter / process steps
--------------------------------------------------------------- */
.step {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 28px;
  padding: 40px 0;
}
.step + .step { border-top: 1px solid var(--obsidian-line); }
.step .n { font-family: var(--font-mono); font-size: 15px; color: var(--orange); padding-top: 4px; }
.step h3 { font-size: 22px; margin-bottom: 10px; }
.step p { color: var(--white-soft); }
@media (max-width: 620px) {
  .step { grid-template-columns: 1fr; gap: 10px; }
}

/* ---------------------------------------------------------------
   Accordion (Science page, FAQ)
--------------------------------------------------------------- */
.accordion__item { border-bottom: 1px solid var(--obsidian-line); }
.accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: none;
  border: none;
  color: var(--white);
  text-align: left;
  padding: 26px 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
}
.accordion__trigger .meta { font-size: 13px; color: var(--white-faint); font-weight: 400; font-family: var(--font-body); margin-top: 4px; }
.accordion__trigger .plus {
  flex-shrink: 0;
  width: 22px; height: 22px;
  position: relative;
}
.accordion__trigger .plus::before, .accordion__trigger .plus::after {
  content: ""; position: absolute; background: var(--orange); transition: transform .3s var(--ease);
}
.accordion__trigger .plus::before { width: 100%; height: 2px; top: 50%; left: 0; transform: translateY(-50%); }
.accordion__trigger .plus::after { width: 2px; height: 100%; left: 50%; top: 0; transform: translateX(-50%); }
.accordion__trigger.is-open .plus::after { transform: translateX(-50%) rotate(90deg); opacity: 0; }
.accordion__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s var(--ease);
}
.accordion__body-inner { padding: 0 0 28px; color: var(--white-soft); max-width: var(--text-width); }
.accordion__body-inner .apply {
  margin-top: 14px;
  padding: 14px 18px;
  border-left: 2px solid var(--slate);
  background: rgba(74,90,102,.08);
  font-size: 15px;
}
.accordion__body-inner a.wiki {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--silver);
  border-bottom: 1px solid var(--obsidian-line);
}

/* ---------------------------------------------------------------
   Flip cards (Deliverables, Findings)
--------------------------------------------------------------- */
.flip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
@media (max-width: 960px) { .flip-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .flip-grid { grid-template-columns: 1fr; } }
.flip-card { perspective: 1400px; height: 240px; }
.flip-card__inner {
  position: relative; width: 100%; height: 100%;
  transition: transform .6s var(--ease);
  transform-style: preserve-3d;
}
.flip-card.is-flipped .flip-card__inner { transform: rotateY(180deg); }
.flip-card__face {
  position: absolute; inset: 0;
  backface-visibility: hidden;
  border: 1px solid var(--obsidian-line);
  border-radius: var(--radius);
  padding: 26px;
  display: flex;
  flex-direction: column;
  cursor: pointer;
}
.flip-card__front { background: var(--obsidian-raised); justify-content: space-between; }
.flip-card__front .code { font-family: var(--font-mono); font-size: 12px; color: var(--orange); letter-spacing: .08em; }
.flip-card__front h4 { font-size: 19px; margin-top: 10px; }
.flip-card__front .tap { margin-top: auto; font-size: 12px; color: var(--white-faint); font-family: var(--font-mono); }
.flip-card__back {
  background: var(--obsidian);
  border-color: var(--orange);
  transform: rotateY(180deg);
  overflow-y: auto;
}
.flip-card__back p { font-size: 14px; color: var(--white-soft); }
.flip-card__back .tap { margin-top: auto; font-size: 11.5px; color: var(--white-faint); font-family: var(--font-mono); padding-top: 10px; }

/* Findings-specific flip card (score front) */
.find-card { perspective: 1400px; height: 300px; }
.find-card__inner { position: relative; width: 100%; height: 100%; transition: transform .6s var(--ease); transform-style: preserve-3d; }
.find-card.is-flipped .find-card__inner { transform: rotateY(180deg); }
.find-card__face { position: absolute; inset: 0; backface-visibility: hidden; border: 1px solid var(--obsidian-line); border-radius: var(--radius); padding: 28px; cursor: pointer; display: flex; flex-direction: column; }
.find-card__front { background: var(--obsidian-raised); }
.find-card__front .tag { font-family: var(--font-mono); font-size: 11.5px; color: var(--white-faint); text-transform: uppercase; letter-spacing: .08em; }
.find-card__front h4 { font-size: 21px; margin-top: 8px; }
.find-card__score { margin-top: 20px; display: flex; align-items: baseline; gap: 12px; }
.find-card__score .n { font-family: var(--font-mono); font-size: 40px; font-weight: 600; }
.find-card__score .g { font-family: var(--font-mono); font-size: 15px; color: var(--white-faint); }
.find-card__teaser { margin-top: 16px; font-size: 14px; color: var(--white-soft); font-style: normal; border-top: 1px solid var(--obsidian-line); padding-top: 14px; }
.find-card__front .tap { margin-top: auto; font-size: 11.5px; color: var(--white-faint); font-family: var(--font-mono); padding-top: 14px; }
.find-card__back { background: var(--obsidian); border-color: var(--orange); transform: rotateY(180deg); overflow-y: auto; }
.find-card__back .tap { margin-top: auto; font-size: 11px; color: var(--white-faint); font-family: var(--font-mono); }
.find-card--more { display: flex; align-items: center; justify-content: center; text-align: center; border: 1px dashed var(--obsidian-line); border-radius: var(--radius); height: 300px; }
.find-card--more span { font-family: var(--font-mono); font-size: 13px; letter-spacing: .1em; text-transform: uppercase; color: var(--white-faint); }

/* grade colors */
.g-A { color: var(--white); } .g-B { color: var(--silver); } .g-C { color: var(--orange); } .g-D, .g-F { color: var(--orange-hot); }

/* ---------------------------------------------------------------
   Signal line (slate — reserved exclusively for status/signal)
--------------------------------------------------------------- */
.signal { display: flex; align-items: center; gap: 10px; font-family: var(--font-mono); font-size: 13px; color: var(--slate); }
.signal .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--slate); flex-shrink: 0; }
.signal--verified .dot { background: var(--slate); }
.signal--unverified { color: var(--white-faint); }

/* ---------------------------------------------------------------
   Guarantee module
--------------------------------------------------------------- */
.guarantee {
  border: 1px solid var(--obsidian-line);
  padding: 56px;
  text-align: center;
  position: relative;
}
.guarantee .g-items { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin: 40px 0; text-align: left; }
.guarantee .g-item h4 { font-size: 18px; margin-bottom: 8px; }
.guarantee .g-item p { color: var(--white-soft); font-size: 15px; }
.guarantee .closer { font-family: var(--font-display); font-size: 22px; font-style: normal; color: var(--white); margin-top: 8px; }
@media (max-width: 700px) {
  .guarantee { padding: 36px 24px; }
  .guarantee .g-items { grid-template-columns: 1fr; }
}

/* ---------------------------------------------------------------
   Score reveal — calibration pulse (ONE of the 3 sanctioned moments)
--------------------------------------------------------------- */
@keyframes pulse-orange {
  0% { color: var(--white); text-shadow: none; }
  40% { color: var(--orange); text-shadow: 0 0 24px rgba(255,122,26,.55); }
  100% { color: var(--white); text-shadow: none; }
}
.score-reveal.animate { animation: pulse-orange 1.1s var(--ease) 1; }

/* ---------------------------------------------------------------
   Footer
--------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--obsidian-line); padding: 80px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand p { margin-top: 16px; color: var(--white-faint); font-size: 14px; max-width: 320px; }
.footer-col h5 { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--white-faint); margin-bottom: 18px; }
.footer-col a { display: block; font-size: 14.5px; color: var(--white-soft); padding: 6px 0; }
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  margin-top: 60px; padding-top: 28px; border-top: 1px solid var(--obsidian-line);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 13px; color: var(--white-faint); }
.footer-bottom .legal-links { display: flex; gap: 20px; }
.footer-bottom .legal-links a { font-size: 13px; color: var(--white-faint); }
@media (max-width: 860px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ---------------------------------------------------------------
   Utility
--------------------------------------------------------------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mono { font-family: var(--font-mono); }
.orange { color: var(--orange); }
.soft { color: var(--white-soft); }
.faint { color: var(--white-faint); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
@media (max-width: 800px) { .two-col { grid-template-columns: 1fr; gap: 32px; } }

/* skip link / focus */
.skip-link { position: absolute; left: -999px; top: 0; background: var(--orange); color: var(--obsidian); padding: 10px 16px; z-index: 100; }
.skip-link:focus { left: 12px; top: 12px; }
:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }

/* form */
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 13.5px; color: var(--white-faint); margin-bottom: 8px; font-family: var(--font-mono); letter-spacing: .04em; text-transform: uppercase; }
.field input, .field textarea, .field select {
  width: 100%; background: var(--obsidian-raised); border: 1px solid var(--obsidian-line); color: var(--white);
  padding: 14px 16px; font-family: var(--font-body); font-size: 15px; border-radius: var(--radius);
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--orange); }

/* calculator */
.calc-panel { border: 1px solid var(--obsidian-line); padding: 40px; }
.calc-row { margin-bottom: 30px; }
.calc-row label { display: flex; justify-content: space-between; font-size: 14px; color: var(--white-soft); margin-bottom: 10px; }
.calc-row output { font-family: var(--font-mono); color: var(--orange); }
input[type="range"] { width: 100%; accent-color: var(--orange); background: transparent; }
.calc-result { border-top: 1px solid var(--obsidian-line); margin-top: 30px; padding-top: 30px; text-align: center; }
.calc-result .n { font-family: var(--font-mono); font-size: 48px; font-weight: 600; }

/* ---------------------------------------------------------------
   Sticky contact cluster (call / text / WhatsApp)
--------------------------------------------------------------- */
.sticky-contact {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.sticky-contact__btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--orange);
  color: var(--obsidian);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px -6px rgba(0,0,0,.5);
  transition: transform .25s var(--ease), background .25s var(--ease);
}
.sticky-contact__btn:hover { background: var(--orange-hot); transform: translateY(-2px) scale(1.05); }
@media (max-width: 600px) {
  .sticky-contact { right: 14px; bottom: 14px; gap: 8px; }
  .sticky-contact__btn { width: 42px; height: 42px; }
}