/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink-950: #050505;
  --ink-900: #0a0a0b;
  --ink-850: #0f0f11;
  --ink-800: #141417;
  --ink-700: #1c1c20;
  --ink-600: #26262c;
  --ink-500: #3a3a42;
  --ink-400: #6b6b76;
  --ink-300: #9a9aa6;
  --ink-200: #c8c8d0;
  --ink-100: #e8e8ec;
  --firebrick: #B22222;
  --firebrick-600: #a01f1f;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 0px;
}

body {
  background: var(--ink-950);
  color: var(--ink-100);
  font-family: 'Inter', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

::selection { background: var(--firebrick); color: #fff; }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font-family: inherit; }

/* ===== Layout ===== */
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
@media (min-width: 768px) { .container { padding: 0 48px; } }
@media (min-width: 1024px) { .container { padding: 0 80px; } }

.container-relative { position: relative; z-index: 10; }
.text-center { text-align: center; }

.section { padding: 96px 0; }
@media (min-width: 768px) { .section { padding: 64px 0; } }
.section-bordered { border-top: 1px solid rgba(20,20,23,0.5); }

.section-header { max-width: 768px; margin-bottom: 64px; }
.eyebrow {
  font-size: 11px; font-weight: 500; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--firebrick);
}
.section-title {
  margin-top: 16px; font-size: 30px; font-weight: 600;
  letter-spacing: -0.02em; line-height: 1.15; text-wrap: balance;
}
@media (min-width: 768px) { .section-title { font-size: 36px; } }
@media (min-width: 1024px) { .section-title { font-size: 48px; } }
.section-subtitle {
  margin-top: 24px; font-size: 18px; color: var(--ink-300); line-height: 1.6;
}

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 16px 28px; font-size: 14px; font-weight: 500; color: #fff;
  background: var(--firebrick); border-radius: 2px;
  transition: background 0.2s, box-shadow 0.2s;
}
.btn-primary:hover { background: var(--firebrick-600); box-shadow: 0 0 24px rgba(178,34,34,0.25); }
.btn-primary svg { width: 16px; height: 16px; transition: transform 0.2s; }
.btn-primary:hover svg { transform: translateX(4px); }

.btn-outline {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 16px 28px; font-size: 14px; font-weight: 500; color: var(--ink-100);
  border: 1px solid var(--ink-600); border-radius: 2px;
  transition: border-color 0.2s, background 0.2s;
}
.btn-outline:hover { border-color: var(--ink-400); background: var(--ink-800); }
.btn-outline svg { width: 16px; height: 16px; }

.btn-full { width: 100%; }

/* ===== Navbar ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  background: #000;
  transition: background 0.5s, border-color 0.5s, backdrop-filter 0.5s, transform 0.25s ease;
  border-bottom: 1px solid transparent;
  will-change: transform;
}
.navbar.hidden {
  transform: translateY(-100%);
  pointer-events: none;
}
.navbar.scrolled {
  background: rgba(5,5,5,0.8); backdrop-filter: blur(16px);
  border-bottom-color: rgba(28,28,32,0.5);
}
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 20px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
@media (min-width: 768px) { .nav-inner { padding: 20px 48px; } }
@media (min-width: 1024px) { .nav-inner { padding: 20px 80px; } }

.logo { display: flex; align-items: center; gap: 10px; }
.brand-logo { display: block; width: auto; height: 36px; max-width: 180px; object-fit: contain; }
.footer-logo .brand-logo { height: 40px; }

.nav-links { display: none; gap: 32px; }
@media (min-width: 768px) { .nav-links { display: flex; } }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--ink-300); transition: color 0.2s; }
.nav-links a:hover { color: var(--ink-100); }

.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-actions .btn-primary { display: none; }
@media (min-width: 640px) { .nav-actions .btn-primary { display: inline-flex; } }

.menu-toggle { display: flex; color: var(--ink-200); }
@media (min-width: 768px) { .menu-toggle { display: none; } }
.menu-toggle svg { width: 24px; height: 24px; }

.mobile-menu {
  background: rgba(10,10,11,0.95); backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(28,28,32,0.5); padding: 24px;
}
.mobile-menu a {
  display: block; padding: 12px 0; font-size: 16px; font-weight: 500;
  color: var(--ink-200); border-bottom: 1px solid var(--ink-800);
}
.mobile-menu .btn-primary { width: 100%; margin-top: 16px; }

/* ===== Grid Background ===== */
.grid-bg {
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 64px 64px;
}
.radial-fade {
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(178,34,34,0.08), transparent 70%);
}

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  overflow: hidden;
}
.hero-grid { position: absolute; inset: 0; opacity: 0.6; }
.hero .radial-fade { position: absolute; inset: 0; }
.hero-scan {
  position: absolute; left: 0; right: 0; top: 0; height: 128px;
  background: linear-gradient(to bottom, rgba(178,34,34,0.05), transparent);
  animation: scan 4s linear infinite; pointer-events: none;
}
@keyframes scan { 0% { transform: translateY(-100%); } 100% { transform: translateY(100vh); } }

.hero-content { position: relative; z-index: 10; padding-top: 128px; padding-bottom: 80px; }

.hero-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  align-items: center;
}
.hero-copy { min-width: 0; }
.hero-product-visual {
  min-width: 0;
  animation: fadeUp 0.8s ease-out 0.5s forwards;
  opacity: 0;
  transform: translateY(24px);
}
.hero-product-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1.25;
  min-height: 0;
  border: 1px solid var(--ink-700);
  border-radius: 2px;
  background: rgba(10,10,11,0.72);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Subtle frame treatment, consistent with the rest of the site */
.hero-product-frame::before {
  content: '';
  position: absolute;
  inset: 24px;
  border: 1px solid rgba(58,58,66,0.42);
  pointer-events: none;
  z-index: 2;
}

.hero-product-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  padding: 42px;
  position: relative;
  z-index: 1;
}

/* Tablet */
@media (max-width: 899px) {
  .hero-product-visual {
    width: 100%;
    max-width: 620px;
    margin: 0 auto;
  }

  .hero-product-frame {
    aspect-ratio: 4 / 3;
  }

  .hero-product-image {
    padding: 32px;
  }
}

/* Mobile */
@media (max-width: 560px) {
  .hero-product-frame {
    aspect-ratio: 1 / 1;
  }

  .hero-product-frame::before {
    inset: 16px;
  }

  .hero-product-image {
    padding: 22px;
  }
}

.hero-eyebrow {
  display: flex; align-items: center; gap: 8px; margin-bottom: 32px;
  animation: fadeIn 0.8s ease-out 0.1s forwards; opacity: 0;
}
.hero-wind-icon { width: 16px; height: 16px; color: var(--firebrick); }
.hero-eyebrow span {
  font-size: 11px; font-weight: 500; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--ink-400);
}
.hero-title {
  font-size: 48px; font-weight: 700; letter-spacing: -0.03em;
  line-height: 0.95; text-wrap: balance;
  animation: fadeUp 0.8s ease-out 0.2s forwards; opacity: 0;
}
@media (min-width: 640px) { .hero-title { font-size: 60px; } }
@media (min-width: 768px) { .hero-title { font-size: 72px; } }
.hero-title-accent { color: var(--ink-300); }
.hero-subtitle {
  margin-top: 32px; font-size: 20px; font-weight: 300;
  color: var(--ink-200); letter-spacing: -0.02em;
  animation: fadeUp 0.8s ease-out 0.4s forwards; opacity: 0;
}
@media (min-width: 768px) { .hero-subtitle { font-size: 24px; } }
.hero-text {
  margin-top: 24px; max-width: 640px; font-size: 16px;
  line-height: 1.6; color: var(--ink-400);
  animation: fadeUp 0.8s ease-out 0.6s forwards; opacity: 0;
}
@media (min-width: 768px) { .hero-text { font-size: 18px; } }
.hero-buttons {
  margin-top: 40px; display: flex; flex-direction: column; gap: 16px;
  animation: fadeUp 0.8s ease-out 0.8s forwards; opacity: 0;
}
@media (min-width: 640px) { .hero-buttons { flex-direction: row; } }
.hero-bottom-fade {
  position: absolute; left: 0; right: 0; bottom: 0; height: 128px;
  background: linear-gradient(to top, var(--ink-950), transparent);
  pointer-events: none;
}

@keyframes fadeIn { to { opacity: 1; } }
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }
.hero-title, .hero-subtitle, .hero-text, .hero-buttons { transform: translateY(24px); }

/* ===== Contrast Grid (Why LightEye) ===== */
.contrast-grid {
  display: grid; gap: 1px; background: var(--ink-800);
  border: 1px solid var(--ink-800); border-radius: 2px; overflow: hidden;
}
@media (min-width: 768px) { .contrast-grid { grid-template-columns: 1fr 1fr; } }
.contrast-card { padding: 40px; display: flex; flex-direction: column; }
@media (min-width: 768px) { .contrast-card { padding: 56px; } }
.contrast-before { background: var(--ink-900); }
.contrast-after { background: var(--ink-850); position: relative; }
.contrast-top-line {
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(to right, transparent, rgba(178,34,34,0.4), transparent);
}
.contrast-label-row { display: flex; align-items: center; gap: 12px; margin-bottom: 32px; }
.contrast-icon-box {
  width: 40px; height: 40px; border: 1px solid var(--ink-600);
  border-radius: 2px; display: flex; align-items: center; justify-content: center;
}
.contrast-icon-box svg { width: 20px; height: 20px; color: var(--ink-400); }
.contrast-icon-box-fire { border-color: rgba(178,34,34,0.5); background: rgba(178,34,34,0.1); }
.contrast-icon-box-fire svg { color: var(--firebrick); }
.contrast-label {
  font-size: 14px; font-weight: 500; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--ink-400);
}
.contrast-label-fire { color: var(--firebrick); }
.contrast-h3 {
  font-size: 24px; font-weight: 600; letter-spacing: -0.02em;
  margin-bottom: 16px; color: var(--ink-100);
}
@media (min-width: 768px) { .contrast-h3 { font-size: 30px; } }
.contrast-h3-dim { color: var(--ink-200); }
.contrast-p { color: var(--ink-300); line-height: 1.6; }
.contrast-p-dim { color: var(--ink-400); line-height: 1.6; }
.dot-row { margin-top: auto; padding-top: 40px; display: flex; gap: 8px; align-items: center; }
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-dim { background: var(--ink-500); animation: pulseSlow 3s ease-in-out infinite; }
.dot-fire { background: rgba(178,34,34,0.6); animation: pulseSlow 3s ease-in-out infinite; }
.dot-row-dense { flex-wrap: wrap; }
.dot-label { margin-left: 12px; font-size: 12px; color: var(--ink-500); letter-spacing: 0.05em; }
.dot-label-fire { color: rgba(178,34,34,0.8); }
@keyframes pulseSlow { 0%, 100% { opacity: 0.3; } 50% { opacity: 0.6; } }

/* ===== Validation ===== */
.validation-grid {
  display: grid; gap: 1px; background: var(--ink-800);
  border: 1px solid var(--ink-800); border-radius: 2px; overflow: hidden;
  margin-bottom: 48px; grid-template-columns: 1fr;
}
@media (min-width: 1024px) { .validation-grid { grid-template-columns: 1fr; } }
.validation-text { max-width: 768px; }
.validation-check-row { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 24px; }
.validation-check { width: 20px; height: 20px; color: var(--firebrick); flex-shrink: 0; margin-top: 2px; }
.validation-main-text { font-size: 18px; color: var(--ink-200); line-height: 1.6; }
.validation-sub-text { font-size: 14px; color: var(--ink-500); line-height: 1.6; margin-left: 32px; }

/* ===== Button Row ===== */
.button-row { display: flex; flex-direction: column; gap: 16px; }
@media (min-width: 640px) { .button-row { flex-direction: row; } }
.button-row-center { justify-content: center; }

/* ===== Final CTA ===== */
.final-cta { position: relative; overflow: hidden; }
.cta-grid { position: absolute; inset: 0; opacity: 0.4; }
.final-cta .radial-fade { position: absolute; inset: 0; }
.cta-top-line {
  position: absolute; left: 0; right: 0; top: 0; height: 1px;
  background: linear-gradient(to right, transparent, rgba(178,34,34,0.4), transparent);
}
.cta-title {
  max-width: 900px; margin: 0 auto; font-size: 36px; font-weight: 700;
  letter-spacing: -0.03em; line-height: 1.05; text-wrap: balance;
}
@media (min-width: 768px) { .cta-title { font-size: 48px; } }
@media (min-width: 1024px) { .cta-title { font-size: 60px; } }
.cta-text { max-width: 640px; margin: 32px auto 0; font-size: 18px; color: var(--ink-300); line-height: 1.6; }
.final-cta .button-row { margin-top: 28px; }

/* ===== Footer ===== */
.footer { border-top: 1px solid rgba(20,20,23,0.5); background: var(--ink-950); }
.footer-inner { padding: 64px 24px; display: flex; flex-direction: column; gap: 48px; }
@media (min-width: 768px) { .footer-inner { flex-direction: row; align-items: flex-start; justify-content: space-between; padding: 64px 48px; } }
@media (min-width: 1024px) { .footer-inner { padding: 64px 80px; } }
.footer-brand { max-width: 384px; }
.logo-group { display: flex; align-items: center; gap: 28px; }
.footer-logo { margin-bottom: 0; }
.footer-linkedin { display: flex; align-items: center; justify-content: center; color: var(--ink-300); transition: color 0.2s; }
.footer-linkedin:hover { color: var(--ink-100); }
.footer-linkedin svg { width: 32px; height: 32px; }
.footer-desc { font-size: 14px; color: var(--ink-500); line-height: 1.6; }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 32px; }
.footer-links a { font-size: 14px; font-weight: 500; color: var(--ink-400); transition: color 0.2s; }
.footer-links a:hover { color: var(--ink-100); }
.footer-bottom {
  padding: 32px 24px; border-top: 1px solid rgba(20,20,23,0.5);
  display: flex; flex-direction: column; align-items: center; gap: 16px;
}
@media (min-width: 640px) { .footer-bottom { flex-direction: row; justify-content: space-between; } }
@media (min-width: 768px) { .footer-bottom { padding: 32px 48px; } }
@media (min-width: 1024px) { .footer-bottom { padding: 32px 80px; } }
.footer-copy, .footer-tag { font-size: 15px; color: var(--ink-600); letter-spacing: 0.05em; }

/* ===== Modal ===== */
.modal-overlay {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center; padding: 16px;
}
.modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(5,5,5,0.8); backdrop-filter: blur(4px);
  animation: fadeIn 0.3s ease-out;
}
.modal {
  position: relative; z-index: 10; width: 100%; max-width: 480px;
  background: var(--ink-900); border: 1px solid var(--ink-700);
  border-radius: 2px; box-shadow: 0 25px 50px rgba(0,0,0,0.5);
  animation: fadeUp 0.4s ease-out;
}
.modal-close {
  position: absolute; top: 16px; right: 16px; color: var(--ink-400);
  transition: color 0.2s; z-index: 1;
}
.modal-close:hover { color: var(--ink-100); }
.modal-close svg { width: 20px; height: 20px; }
.modal-body { padding: 40px; }
@media (min-width: 768px) { .modal-body { padding: 48px; } }
.modal-header { margin-bottom: 24px; }
.modal-title { margin-top: 8px; font-size: 24px; font-weight: 600; letter-spacing: -0.02em; }
.modal-desc { margin-top: 8px; font-size: 14px; color: var(--ink-400); line-height: 1.6; }
.modal-form { display: flex; flex-direction: column; gap: 20px; }
.form-field { display: flex; flex-direction: column; }
.form-field label {
  font-size: 12px; font-weight: 500; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--ink-300); margin-bottom: 8px;
}
.form-field input, .form-field textarea {
  background: var(--ink-850); border: 1px solid var(--ink-700);
  border-radius: 2px; padding: 12px 16px; font-size: 14px; color: var(--ink-100);
  outline: none; transition: border-color 0.2s; resize: none;
}
.form-field input::placeholder, .form-field textarea::placeholder { color: var(--ink-500); }
.form-field input:focus, .form-field textarea:focus { border-color: rgba(178,34,34,0.5); }
.form-error {
  display: flex; align-items: center; gap: 8px; font-size: 14px; color: #e86464;
}
.form-error svg { width: 16px; height: 16px; flex-shrink: 0; }
.modal-success {
  padding: 40px; display: flex; flex-direction: column; align-items: center; text-align: center;
}
@media (min-width: 768px) { .modal-success { padding: 48px; } }
.modal-success svg { width: 48px; height: 48px; color: var(--firebrick); margin-bottom: 16px; }
.modal-success h3 { font-size: 20px; font-weight: 600; margin-bottom: 8px; }
.modal-success p { font-size: 14px; color: var(--ink-400); line-height: 1.6; max-width: 384px; }
.modal-success .btn-outline { margin-top: 32px; }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--ink-950); }
::-webkit-scrollbar-thumb { background: var(--ink-700); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-600); }

/* ===== Product Snapshot ===== */
.spec-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--ink-800);
  border: 1px solid var(--ink-800);
  border-radius: 2px;
  overflow: hidden;
}
.spec-card {
  background: var(--ink-900);
  padding: 32px;
  min-height: 156px;
  display: grid;
  grid-template-rows: 1fr auto;
  align-items: start;
}
.spec-value {
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--ink-100);
}
.spec-label {
  margin-top: 28px;
  max-width: 220px;
  font-size: 13px;
  color: var(--ink-400);
  line-height: 1.5;
}
@media (min-width: 640px) {
  .spec-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (min-width: 960px) {
  .spec-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .spec-card { min-height: 170px; padding: 36px; }
}
.spec-actions { margin-top:28px; }

/* ===== Evidence ===== */
.evidence-box { background:var(--ink-900); min-height:320px; display:flex; flex-direction:column; border-radius:2px; overflow:hidden; }
.evidence-topline { padding:16px 20px; font-size:11px; letter-spacing:.16em; text-transform:uppercase; color:var(--firebrick); border-bottom:1px solid var(--ink-800); }
.evidence-caption { padding:18px 20px 22px; font-size:13px; color:var(--ink-500); line-height:1.6; }

/* ===== Hero Responsive ===== */
.hero-title-line { white-space: nowrap; }
@media (min-width: 900px) {
  .hero-layout { grid-template-columns: minmax(0, 0.98fr) minmax(340px, 0.82fr); gap: 96px; }
  .hero-title { font-size: 72px; }
}
@media (min-width: 1100px) {
  .hero-layout { gap: 120px; }
  .hero-title { font-size: 80px; }
}
@media (min-width: 1024px) and (max-width: 1099px) {
  .hero-title { font-size: 72px; }
}

/* ===== Validation plot ===== */
.validation-grid-single {
  max-width: none;
}

.validation-figure {
  width: min(100%, 400px);
  margin: 0 auto;
}

.validation-plot-wrap {
  width: 100%;
  background: #000;
  overflow: hidden;
}

.validation-plot-image {
  display: block;
  width: 100%;
  height: auto;
  color: #fff;
  object-fit: contain;
}

@media (max-width: 640px) {
  .validation-figure {
    width: min(100%, 420px);
  }

  .evidence-caption {
    padding-left: 16px;
    padding-right: 16px;
  }
}