/* ─────────────────────────────────────────────────────────
   Jedah — futuristic dark landing page, percepta.ai-inspired
   ───────────────────────────────────────────────────────── */

:root {
  --bg:           #030305;          /* near-pure black */
  --surface:      #0a0a0c;
  --surface-2:    #101012;
  --text:         #f0f0f2;
  --text-soft:    #b0b2b6;
  --muted:        #5e6066;
  --border:       rgba(255, 255, 255, 0.06);
  --border-strong:rgba(255, 255, 255, 0.13);
  /* Monochrome — all accents are tints of white now */
  --accent:       #e4e4e6;
  --accent-2:     #c0c0c4;
  --accent-3:     #ffffff;
  --grad: linear-gradient(120deg, #ffffff 0%, #c0c0c4 50%, #5e6066 100%);
  --container-w: 1180px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  background: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body { min-height: 100vh; }
a { color: inherit; text-decoration: none; transition: color 0.15s ease; }
a:hover { color: var(--accent); }
img { max-width: 100%; display: block; }

/* ── Wireframe terrain canvas background ─────────────────────
   The canvas itself is positioned fullscreen behind everything;
   bg-terrain.js draws into it on every frame. CSS just handles
   the overlay layers (scanlines, grain, vignette). */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  display: block;
  background: #030305;
}
.bg-overlays {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}
.bg-scanlines {
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    180deg,
    rgba(255,255,255,0.04) 0px,
    rgba(255,255,255,0.04) 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: overlay;
}
.bg-grain {
  position: absolute;
  inset: 0;
  opacity: 0.14;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 1 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
.bg-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(0,0,0,0.85) 100%);
}
/* (blob system replaced by tunnel rings above) */
/* (drift keyframes removed — tunnel rings replace blob motion) */

/* Vignette darkens edges so blobs feel contained */
.bg-vignette {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 100% 75% at 50% 50%, transparent 30%, rgba(0,0,0,0.55) 90%, rgba(0,0,0,0.85) 100%);
}

/* Film grain over everything */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.03;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  mix-blend-mode: overlay;
}

body > * { position: relative; z-index: 2; }

@media (prefers-reduced-motion: reduce) {
  .blob { animation: none; }
}

/* ── Navigation ── */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 32px;
  max-width: var(--container-w);
  margin: 0 auto;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 700;
  letter-spacing: 0.18em;
}
.logo-mark {
  display: inline-block;
  width: 10px; height: 10px;
  background: var(--text);
  border-radius: 50%;
  box-shadow: 0 0 14px rgba(255,255,255,0.4);
  text-indent: -9999px;
  overflow: hidden;
}
.logo-text { font-size: 18px; }
.nav-links {
  display: flex;
  gap: 30px;
  align-items: center;
  font-size: 14px;
  color: var(--text-soft);
}
.nav-cta {
  background: var(--text);
  color: var(--bg) !important;
  padding: 8px 16px;
  border-radius: 100px;
  font-weight: 500;
  transition: opacity 0.15s ease;
}
.nav-cta:hover {
  opacity: 0.85;
}
@media (max-width: 768px) {
  .nav-links a:not(.nav-cta) { display: none; }
}

/* ── Shared utilities ── */
.grad-text {
  color: var(--muted);
}
.section-eyebrow {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 16px;
  text-transform: uppercase;
}

/* ── Hero ── */
.hero {
  max-width: var(--container-w);
  margin: 60px auto 0;
  padding: 80px 32px 60px;
  text-align: center;
  position: relative;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-soft);
  text-transform: uppercase;
  margin-bottom: 28px;
  background: rgba(255,255,255,0.02);
}
.hero-eyebrow .dot {
  width: 6px; height: 6px;
  background: var(--text);
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(255,255,255,0.5);
  animation: pulse 2.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero-title {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 700;
  font-size: clamp(48px, 9vw, 116px);
  line-height: 0.98;
  letter-spacing: -0.04em;
  margin: 0 auto 28px;
  max-width: 980px;
  color: var(--text);
}
.hero-title .grad-text {
  background: none;
  -webkit-background-clip: initial;
  background-clip: initial;
  color: var(--muted);
  -webkit-text-fill-color: var(--muted);
}
.hero-sub {
  font-size: 19px;
  line-height: 1.5;
  color: var(--text-soft);
  max-width: 640px;
  margin: 0 auto 40px;
}
.hero-fineprint {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.05em;
  margin-top: 16px;
}

/* ── Waitlist form ── */
/* Waitlist wrapper — gives the form a clear visual boundary */
.waitlist-wrap {
  max-width: 540px;
  margin: 0 auto;
  background: rgba(15,15,18,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 14px;
  padding: 28px;
  text-align: left;
  box-shadow:
    0 30px 70px -25px rgba(0,0,0,0.8),
    inset 0 1px 0 rgba(255,255,255,0.04);
}
.waitlist-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 18px;
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.waitlist-label {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}
.waitlist-sublabel {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
}
.waitlist-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
  box-shadow: none;
}
.waitlist-form .field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.waitlist-form .field label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.waitlist-form input {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 14px;
  padding: 12px 14px;
  outline: none;
  min-width: 0;
  border-radius: 8px;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.waitlist-form input::placeholder { color: var(--muted); }
.waitlist-form input:focus {
  outline: none;
  border-color: rgba(255,255,255,0.35);
  background: rgba(255,255,255,0.06);
}
.waitlist-form button {
  background: var(--text);
  color: var(--bg);
  border: none;
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 600;
  font-size: 14px;
  padding: 14px 22px;
  border-radius: 8px;
  cursor: pointer;
  transition: opacity 0.15s ease;
  letter-spacing: 0.01em;
  margin-top: 4px;
}
.waitlist-form button:hover { opacity: 0.85; }
.waitlist-form.big {
  max-width: 720px;
  padding: 8px;
  flex-direction: row;
  flex-wrap: wrap;
}
.waitlist-form.big input { flex: 1 1 220px; }

/* (marquee removed per redesign — keeping background atmosphere as the only motion) */

/* ── Built on row ── */
.built-on {
  text-align: center;
  padding: 40px 32px 20px;
  max-width: var(--container-w);
  margin: 0 auto;
}
.built-on-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.built-on-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 16px;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--text-soft);
}
.built-on-row .bo-sep { color: var(--muted); opacity: 0.5; }

/* ── Audience tabs ── */
.audience-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}
@media (max-width: 768px) { .audience-tabs { grid-template-columns: repeat(2, 1fr); } }
.audience-tab {
  background: transparent;
  border: none;
  border-right: 1px solid var(--border);
  text-align: left;
  padding: 28px 24px;
  cursor: pointer;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: color 0.2s ease, background 0.2s ease;
  font-family: inherit;
}
.audience-tab:last-child { border-right: none; }
.audience-tab:hover { color: var(--text-soft); }
.audience-tab.active {
  color: var(--text);
  background: linear-gradient(180deg, rgba(139,180,255,0.05), transparent);
  position: relative;
}
.audience-tab.active::after {
  content: "";
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 2px;
  background: var(--grad);
}
.audience-tab .tab-num {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.15em;
}
.audience-tab .tab-name {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 24px;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.audience-content { padding: 8px 0; min-height: 160px; }
.audience-panel { display: none; }
.audience-panel.active { display: block; }
.audience-panel p {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.4;
  color: var(--text-soft);
  max-width: 880px;
}

/* ── Section container ── */
.section {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 140px 32px;
  position: relative;
}
.section-title {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 600;
  font-size: clamp(38px, 5.5vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin-bottom: 24px;
  max-width: 920px;
}
.section-title .grad-text { font-style: normal; color: var(--muted); }
.section-lead {
  font-size: 19px;
  line-height: 1.55;
  color: var(--text-soft);
  max-width: 720px;
  margin-bottom: 72px;
}

/* ── Problem grid ── */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 768px) {
  .problem-grid { grid-template-columns: 1fr; }
}
.problem-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 36px 28px;
  position: relative;
  overflow: hidden;
}
.problem-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
}
.problem-num {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 700;
  font-size: 56px;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.04em;
  margin-bottom: 16px;
}
.problem-card p {
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.5;
}

/* ── Feature row ── */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 768px) {
  .feature-row { grid-template-columns: 1fr; }
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px 32px;
  position: relative;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.feature-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.feature-num {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 18px;
}
.feature-card h3 {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}
.feature-card p {
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 24px;
}
.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.feature-tags span {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.05em;
  padding: 5px 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-soft);
}

/* ── Frameworks ── */
.frameworks-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 768px) {
  .frameworks-grid { grid-template-columns: 1fr; }
}
.framework-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px 32px;
  position: relative;
}
.framework-name {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
  color: var(--accent-2);
}
.framework-card p {
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 22px;
}
.framework-source {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ── Ethics ── */
.ethics-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.ethics-row {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-top: 1px solid var(--border);
}
.ethics-row:last-child { border-bottom: 1px solid var(--border); }
.ethics-mark {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 28px;
  color: var(--accent-3);
  line-height: 1;
}
.ethics-row h3 {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}
.ethics-row p {
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.6;
  max-width: 720px;
}

/* ── Metrics ── */
.metrics {
  padding: 80px 32px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, transparent, rgba(124,255,224,0.03), transparent);
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  max-width: var(--container-w);
  margin: 0 auto;
  text-align: center;
}
@media (max-width: 768px) {
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
}
.metric-num {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 700;
  font-size: clamp(48px, 6vw, 72px);
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 10px;
}
.metric-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ── CTA section ── */
.cta-section {
  text-align: center;
}
.cta-section .section-title,
.cta-section .section-lead {
  margin-left: auto;
  margin-right: auto;
}

/* ── FAQ ── */
.faq-item {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  cursor: pointer;
}
.faq-item:last-child { border-bottom: 1px solid var(--border); }
.faq-item summary {
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 400;
  font-size: 24px;
  letter-spacing: -0.01em;
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 400;
  font-size: 28px;
  color: var(--accent);
  transition: transform 0.2s ease;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p {
  color: var(--text-soft);
  font-size: 16px;
  line-height: 1.6;
  margin-top: 16px;
  max-width: 800px;
}
.faq-item a { color: var(--accent); text-decoration: underline; }

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 64px 32px;
  text-align: center;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  font-family: "IBM Plex Sans", sans-serif;
  font-weight: 700;
  letter-spacing: 0.18em;
}
.footer-tag {
  color: var(--text-soft);
  font-size: 18px;
  margin-bottom: 28px;
}
.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 32px;
}
.footer-copy {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ── Section ID scroll offset (account for sticky nav) ── */
section[id] { scroll-margin-top: 80px; }

/* ── Scroll-reveal — JS adds .in-view when element enters viewport ── */
.will-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.will-reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .will-reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  .hero-eyebrow .dot { animation: none; }
}