/* ═══════════════════════════════════════════════════════════════════════
   PROBE — Forensic Scene Analysis
   Aesthetic: Noir terminal / classified investigation / dark cinematic
   ═══════════════════════════════════════════════════════════════════════ */

/* ─── Tokens ──────────────────────────────────────────────────────────── */

:root {
  --bg:            #0A0A0A;
  --bg-elevated:   #101010;
  --bg-card:       #131313;
  --border:        #1C1C1C;
  --border-light:  #282828;
  --text:          #FFFFFF;
  --text-2:        #999999;
  --text-3:        #555555;
  --accent:        #E03131;
  --accent-dim:    rgba(224, 49, 49, 0.07);
  --accent-glow:   rgba(224, 49, 49, 0.15);
  --accent-strong: rgba(224, 49, 49, 0.25);
  --font:          'Space Mono', monospace;
  --ease:          cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out:      cubic-bezier(0.16, 1, 0.3, 1);
}

/* ─── Reset ───────────────────────────────────────────────────────────── */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; }

/* ─── Atmosphere — grid / scanline / grain ─────────────────────────────── */

.atm__grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(224, 49, 49, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(224, 49, 49, 0.018) 1px, transparent 1px);
  background-size: 60px 60px;
}

.atm__scanline {
  position: fixed; inset: 0; z-index: 9991; pointer-events: none; overflow: hidden;
}

.atm__scanline::before {
  content: '';
  position: absolute; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, transparent 5%, rgba(224, 49, 49, 0.04) 30%, rgba(224, 49, 49, 0.06) 50%, rgba(224, 49, 49, 0.04) 70%, transparent 95%);
  animation: scanline 8s linear infinite;
}

.atm__grain {
  position: fixed; inset: 0; z-index: 9992; pointer-events: none; opacity: 0.35;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.06'/%3E%3C/svg%3E");
}

.atm__vignette {
  position: fixed; inset: 0; z-index: 9993; pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0, 0, 0, 0.4) 100%);
}

/* ─── Nav ─────────────────────────────────────────────────────────────── */

.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
}

.nav::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-light), transparent);
}

.nav__inner {
  max-width: 1080px; margin: 0 auto; padding: 0 32px;
  height: 60px; display: flex; align-items: center; justify-content: space-between;
}

.nav__logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 15px; letter-spacing: 2px; text-transform: uppercase;
}

.nav__mark { color: var(--accent); flex-shrink: 0; }

.nav__links {
  display: flex; align-items: center; gap: 32px;
}

.nav__links a {
  font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 2.5px; color: var(--text-3);
  transition: color 0.3s;
}

.nav__links a:hover { color: var(--text); }

.nav__cta { color: var(--accent) !important; }

.nav__toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}

.nav__toggle span {
  display: block; width: 18px; height: 1.5px;
  background: var(--text); transition: transform 0.3s, opacity 0.3s;
}

.nav__toggle.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4.5px); }
.nav__toggle.active span:nth-child(2) { opacity: 0; }
.nav__toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4.5px); }

/* ─── Hero ────────────────────────────────────────────────────────────── */

.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 140px 32px 100px; position: relative; overflow: hidden;
}

/* Reticle background */
.hero__reticle {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: min(640px, 95vw); height: min(640px, 95vw); pointer-events: none;
}

.hero__ring {
  position: absolute; border-radius: 50%;
  border: 1px solid rgba(224, 49, 49, 0.04);
}

.hero__ring--1 { inset: 0; animation: ring-pulse 6s ease-in-out infinite; }
.hero__ring--2 { inset: 15%; animation: ring-pulse 6s ease-in-out infinite 1.5s; }
.hero__ring--3 { inset: 33%; animation: ring-pulse 6s ease-in-out infinite 3s; }

.hero__cross {
  position: absolute; inset: 0;
}

.hero__cross::before, .hero__cross::after {
  content: ''; position: absolute; background: rgba(224, 49, 49, 0.025);
}

.hero__cross::before { width: 1px; height: 100%; left: 50%; top: 0; }
.hero__cross::after  { height: 1px; width: 100%; top: 50%; left: 0; }

/* Hero content */
.hero__content { position: relative; z-index: 2; max-width: 680px; }

.hero__badge {
  display: inline-block; font-size: 10px; font-weight: 700;
  letter-spacing: 3px; color: var(--accent); padding: 8px 20px;
  border: 1px solid rgba(224, 49, 49, 0.15); margin-bottom: 40px;
  background: var(--accent-dim);
}

.hero__title {
  font-size: clamp(60px, 11vw, 120px);
  font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  line-height: 0.9; margin-bottom: 0;
  text-shadow: 0 0 60px rgba(224, 49, 49, 0.08);
}

.hero__rule {
  width: 64px; height: 2px; background: var(--accent); margin: 32px auto;
  box-shadow: 0 0 16px var(--accent-glow);
}

.hero__tagline {
  font-size: 14px; font-weight: 700; letter-spacing: 4px;
  text-transform: uppercase; color: var(--accent); margin-bottom: 28px;
}

.hero__desc {
  font-size: 13px; line-height: 1.9; color: var(--text-3); margin-bottom: 48px;
  max-width: 520px; margin-left: auto; margin-right: auto;
}

.hero__actions {
  display: flex; align-items: center; justify-content: center;
  gap: 16px; flex-wrap: wrap;
}

.hero__scroll {
  position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: var(--text-3); animation: float 3s ease-in-out infinite;
}

.hero__scroll span {
  font-size: 9px; letter-spacing: 3px; text-transform: uppercase;
}

/* ─── Buttons ─────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font); font-weight: 700; font-size: 10px;
  text-transform: uppercase; letter-spacing: 2px; padding: 16px 32px;
  border-radius: 3px; border: none; cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.3s, opacity 0.2s, border-color 0.3s;
}

.btn--primary {
  background: var(--accent); color: var(--bg);
  box-shadow: 0 0 24px rgba(224, 49, 49, 0.12), inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(224, 49, 49, 0.2), inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn--primary:active { transform: translateY(0); }

.btn--outline {
  background: transparent; color: var(--text-2);
  border: 1px solid var(--border-light);
}

.btn--outline:hover {
  border-color: var(--text-3); color: var(--text);
  transform: translateY(-2px);
}

.btn--outline:active { transform: translateY(0); }

/* ─── Section Header ──────────────────────────────────────────────────── */

.section-header {
  display: flex; align-items: center; gap: 20px;
  margin-bottom: 64px;
}

.section-header__num {
  font-size: 12px; font-weight: 700; color: var(--accent);
  letter-spacing: 2px; flex-shrink: 0;
}

.section-header__line {
  flex: 1; height: 1px; background: var(--border);
}

.section-header__label {
  font-size: 10px; font-weight: 700; letter-spacing: 3px;
  color: var(--text-3); flex-shrink: 0;
}

/* ─── Features ────────────────────────────────────────────────────────── */

.features {
  max-width: 1080px; margin: 0 auto; padding: 120px 32px;
}

.features__grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px;
}

.feature-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 6px; padding: 36px 32px; position: relative;
  transition: border-color 0.4s, transform 0.4s var(--ease), box-shadow 0.4s;
  overflow: hidden;
}

.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0; transition: opacity 0.4s;
}

.feature-card:hover {
  border-color: rgba(224, 49, 49, 0.12);
  transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
}

.feature-card:hover::before { opacity: 1; }

.feature-card__header {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 20px;
}

.feature-card__icon {
  width: 44px; height: 44px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-radius: 6px;
  color: var(--accent); background: var(--accent-dim);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.feature-card:hover .feature-card__icon {
  border-color: rgba(224, 49, 49, 0.2);
  box-shadow: 0 0 16px var(--accent-dim);
}

.feature-card__tag {
  font-size: 9px; font-weight: 700; letter-spacing: 2px;
  color: var(--text-3); opacity: 0.5;
}

.feature-card__title {
  font-size: 15px; font-weight: 700; letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.feature-card__desc {
  font-size: 12px; line-height: 1.85; color: var(--text-3);
}

/* ─── Evidence / Screenshots ──────────────────────────────────────────── */

.evidence {
  max-width: 1080px; margin: 0 auto; padding: 120px 32px;
}

.evidence__scroll {
  display: flex; gap: 20px; overflow-x: auto;
  -webkit-overflow-scrolling: touch; scroll-snap-type: x mandatory;
  padding-bottom: 8px;
  /* hide scrollbar but keep function */
  scrollbar-width: thin; scrollbar-color: var(--border) transparent;
}

.evidence__scroll::-webkit-scrollbar { height: 4px; }
.evidence__scroll::-webkit-scrollbar-track { background: transparent; }
.evidence__scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.exhibit {
  flex: 0 0 220px; scroll-snap-align: start;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 6px; overflow: hidden;
  transition: border-color 0.4s, transform 0.4s var(--ease);
}

.exhibit:hover {
  border-color: var(--border-light);
  transform: translateY(-3px);
}

.exhibit__header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
}

.exhibit__label {
  font-size: 9px; font-weight: 700; letter-spacing: 2px; color: var(--accent);
}

.exhibit__case {
  font-size: 9px; letter-spacing: 1px; color: var(--text-3); opacity: 0.5;
}

.exhibit__frame {
  position: relative; overflow: hidden; background: var(--bg);
}

.exhibit__frame img {
  width: 100%; height: auto; display: block;
  transition: transform 0.5s var(--ease);
}

.exhibit:hover .exhibit__frame img {
  transform: scale(1.02);
}

/* ─── Protocol / How it works ─────────────────────────────────────────── */

.protocol {
  max-width: 1080px; margin: 0 auto; padding: 120px 32px;
}

.protocol__steps {
  display: grid; grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0; align-items: start;
}

.protocol__step { text-align: center; padding: 0 12px; }

.protocol__num {
  font-size: 40px; font-weight: 700; color: var(--border);
  line-height: 1; margin-bottom: 24px; letter-spacing: 2px;
  transition: color 0.4s;
}

.protocol__step:hover .protocol__num { color: var(--border-light); }

.protocol__icon {
  color: var(--accent); margin-bottom: 20px; display: flex; justify-content: center;
}

.protocol__title {
  font-size: 14px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; margin-bottom: 14px;
}

.protocol__desc {
  font-size: 12px; line-height: 1.85; color: var(--text-3);
}

.protocol__connector {
  width: 48px; height: 1px;
  border-top: 1px dashed var(--border-light);
  align-self: center; margin-top: 10px;
  opacity: 0.5;
}

/* ─── Intel / FAQ ─────────────────────────────────────────────────────── */

.intel {
  max-width: 1080px; margin: 0 auto; padding: 120px 32px;
}

.intel__list { max-width: 720px; }

.intel__item { border-bottom: 1px solid var(--border); }
.intel__item:first-child { border-top: 1px solid var(--border); }

.intel__question {
  width: 100%; padding: 24px 0; cursor: pointer;
  background: none; border: none; color: var(--text);
  font-family: var(--font); font-size: 13px; font-weight: 700;
  letter-spacing: 0.3px; text-align: left;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  transition: color 0.3s;
}

.intel__question:hover { color: var(--accent); }

.intel__chevron {
  flex-shrink: 0; color: var(--text-3);
  transition: transform 0.4s var(--ease-out), color 0.3s;
}

.intel__item.is-open .intel__chevron {
  transform: rotate(180deg); color: var(--accent);
}

.intel__answer {
  display: grid; grid-template-rows: 0fr;
  transition: grid-template-rows 0.4s var(--ease-out);
}

.intel__item.is-open .intel__answer {
  grid-template-rows: 1fr;
}

.intel__answer-inner { overflow: hidden; }

.intel__answer-inner p {
  font-size: 13px; line-height: 1.85; color: var(--text-3);
  padding-bottom: 24px;
}

/* ─── CTA ─────────────────────────────────────────────────────────────── */

.cta {
  padding: 120px 32px; text-align: center; position: relative;
}

.cta::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 100%, rgba(224, 49, 49, 0.03) 0%, transparent 60%);
  pointer-events: none;
}

.cta__inner { position: relative; max-width: 600px; margin: 0 auto; }

.cta__label {
  font-size: 10px; font-weight: 700; letter-spacing: 3px;
  color: var(--text-3); margin-bottom: 32px;
}

.cta__title {
  font-size: clamp(20px, 4vw, 36px); font-weight: 700;
  letter-spacing: 2px; text-transform: uppercase; line-height: 1.2;
  white-space: nowrap;
  margin-bottom: 16px;
}

.cta__desc {
  font-size: 13px; line-height: 1.8; color: var(--text-3); margin-bottom: 40px;
}

.cta__actions {
  display: flex; align-items: center; justify-content: center;
  gap: 16px; flex-wrap: wrap;
}

/* ─── Footer ──────────────────────────────────────────────────────────── */

.footer {
  border-top: 1px solid var(--border); padding: 48px 32px;
}

.footer__inner {
  max-width: 1080px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
}

.footer__links {
  display: flex; align-items: center; gap: 24px;
}

.footer__link {
  font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--text-3); transition: color 0.3s;
}

.footer__link:hover { color: var(--text-2); }

.footer__sep { color: var(--border-light); }

.footer__right { text-align: right; }

.footer__credit {
  font-size: 9px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--text-3); margin-bottom: 4px;
}

.footer__copy { font-size: 9px; color: var(--border-light); letter-spacing: 1px; }

/* ─── Scroll Reveal ───────────────────────────────────────────────────── */

.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1; transform: translateY(0);
}

/* Staggered children */
.reveal-stagger > .reveal:nth-child(1) { transition-delay: 0s; }
.reveal-stagger > .reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger > .reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal-stagger > .reveal:nth-child(4) { transition-delay: 0.3s; }

/* ─── Animations ──────────────────────────────────────────────────────── */

@keyframes scanline {
  0%   { top: -3px; }
  100% { top: 100vh; }
}

@keyframes ring-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.4; transform: scale(1.02); }
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(8px); }
}

/* ─── Content Pages (privacy, support) ────────────────────────────────── */

.page {
  max-width: 680px; margin: 0 auto; padding: 140px 32px 100px;
}

.page__badge {
  font-size: 9px; font-weight: 700; letter-spacing: 2px;
  color: var(--text-3); opacity: 0.4; margin-bottom: 16px;
}

.page__title {
  font-size: 28px; font-weight: 700; letter-spacing: 1px;
  margin-bottom: 8px;
}

.page__updated {
  font-size: 11px; color: var(--text-3); letter-spacing: 1px;
  margin-bottom: 48px;
}

.page__section-num {
  font-size: 10px; font-weight: 700; letter-spacing: 2px;
  color: var(--accent); margin-bottom: 8px; display: block;
}

.page h2 {
  font-size: 13px; font-weight: 700; letter-spacing: 0.5px;
  margin-top: 40px; margin-bottom: 14px; color: var(--text);
}

.page p, .page li {
  font-size: 13px; line-height: 1.85; color: var(--text-2);
}

.page ul { padding-left: 20px; margin: 10px 0; }
.page li { margin-bottom: 8px; }
.page strong { color: var(--text); }
.page a { color: var(--accent); transition: opacity 0.2s; }
.page a:hover { opacity: 0.8; text-decoration: underline; }

.page .contact-box {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 6px; padding: 28px; margin: 28px 0;
}

.page .contact-box p { margin-bottom: 8px; }
.page .contact-box p:last-child { margin-bottom: 0; }

.page .support-faq__heading { margin-top: 48px; }
.page .support-faq { border-bottom: 1px solid var(--border); padding: 24px 0; }
.page .support-faq:first-of-type { border-top: 1px solid var(--border); }
.page .support-faq h2 { margin-top: 0; }

/* ─── Reduced Motion ──────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ─── Responsive: Tablet ──────────────────────────────────────────────── */

@media (max-width: 768px) {
  .nav__toggle { display: flex; }

  .nav__links {
    position: absolute; top: 60px; left: 0; right: 0;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    flex-direction: column; gap: 0;
    max-height: 0; overflow: hidden;
    transition: max-height 0.4s var(--ease-out);
    border-bottom: 1px solid transparent;
  }

  .nav__links.open {
    max-height: 320px;
    border-bottom-color: var(--border);
  }

  .nav__links a {
    padding: 16px 32px; display: block;
    border-bottom: 1px solid var(--border);
  }

  .features__grid { grid-template-columns: 1fr; }

  .exhibit { flex: 0 0 200px; }

  .protocol__steps { grid-template-columns: 1fr; gap: 48px; }
  .protocol__connector { display: none; }

  .footer__inner { flex-direction: column; text-align: center; }
  .footer__right { text-align: center; }
}

/* Content pages — always show nav links (only 2 links) */
.nav--simple .nav__links {
  max-height: none !important; position: static;
  flex-direction: row; background: none;
  border: none !important; overflow: visible;
}
.nav--simple .nav__links a {
  padding: 0; border: none !important;
}
.nav--simple .nav__toggle { display: none !important; }

/* ─── Responsive: Mobile ──────────────────────────────────────────────── */

@media (max-width: 480px) {
  .hero { padding: 120px 20px 80px; }
  .hero__scroll { display: none; }
  .hero__badge { font-size: 9px; letter-spacing: 2px; padding: 6px 14px; }
  .hero__actions { flex-direction: column; width: 100%; }
  .btn { width: 100%; justify-content: center; }
  .features, .evidence, .protocol, .intel, .cta { padding-left: 20px; padding-right: 20px; }
  .exhibit { flex: 0 0 180px; }
  .section-header { gap: 12px; }
  .section-header__label { display: none; }
  .page { padding: 120px 20px 80px; }
}