/* ============================================================
   FORMCHECK AI — Landing Page
   ============================================================ */

/* ── TOKENS ── */
:root {
  --bg:         #060810;
  --surface:    #0C0F18;
  --surface-2:  #111620;
  --border:     rgba(255,255,255,0.06);
  --gold:       #FFB800;
  --gold-dim:   #CC9300;
  --gold-glow:  rgba(255,184,0,0.15);
  --gold-glow2: rgba(255,184,0,0.08);
  --cyan:       #00D4FF;
  --cyan-glow:  rgba(0,212,255,0.10);
  --text:       #E8E8E8;
  --muted:      #5A6578;
  --font-display: 'Instrument Serif', serif;
  --font-body:    'Outfit', sans-serif;
  --radius:     0px;
  --max-w:      1200px;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; height: 100%; object-fit: contain; }

/* ── NOISE TEXTURE ── */
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ── GRID OVERLAY ── */
.grid-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 30%, transparent 100%);
}

/* ── NAV ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 48px;
  background: rgba(6,8,16,0.75);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo-icon {
  color: var(--gold);
  font-size: 24px;
}
.logo-ai {
  color: var(--gold);
  margin-left: 2px;
}

.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--gold); }

.nav-cta {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--gold);
  border: 1px solid rgba(255,184,0,0.3);
  padding: 8px 18px;
  transition: all 0.2s;
}
.nav-cta:hover {
  background: var(--gold);
  color: #000;
}

/* ── HERO ── */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 24px 80px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--gold-glow) 0%, transparent 70%);
  top: 5%; left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  animation: blob-drift 8s ease-in-out infinite alternate;
}
.hero::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--cyan-glow) 0%, transparent 70%);
  bottom: 10%; right: 15%;
  pointer-events: none;
  animation: blob-drift 10s ease-in-out infinite alternate-reverse;
}

@keyframes blob-drift {
  from { transform: translateX(-50%) scale(1); opacity: 0.5; }
  to   { transform: translateX(-50%) scale(1.15) translateY(-20px); opacity: 0.9; }
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--gold);
  border: 1px solid rgba(255,184,0,0.25);
  padding: 8px 18px;
  margin-bottom: 48px;
  animation: fade-up 0.8s ease both;
}
.dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
  animation: blink 2s ease-in-out infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.15; }
}

.hero-title {
  font-family: var(--font-display);
  line-height: 0.88;
  letter-spacing: 0.01em;
  animation: fade-up 0.8s 0.1s ease both;
}
.line-one {
  display: block;
  font-size: clamp(48px, 7vw, 80px);
  color: #555;
}
.line-two {
  display: block;
  font-size: clamp(80px, 14vw, 180px);
  background: linear-gradient(140deg, #ffffff 20%, var(--gold) 60%, var(--gold-dim) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  max-width: 540px;
  font-size: 15px;
  font-weight: 300;
  color: var(--muted);
  margin-top: 32px;
  line-height: 1.85;
  animation: fade-up 0.8s 0.2s ease both;
}

.hero-cta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 44px;
  animation: fade-up 0.8s 0.3s ease both;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--gold);
  color: #000;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 16px 32px;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  box-shadow: 0 0 0 0 var(--gold-glow);
}
.btn-primary:hover {
  background: #FFCA40;
  transform: translateY(-2px);
  box-shadow: 0 8px 48px var(--gold-glow);
}

.btn-ghost {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 16px 28px;
  transition: color 0.2s, border-color 0.2s;
}
.btn-ghost:hover {
  color: var(--text);
  border-color: rgba(255,255,255,0.15);
}

/* METRICS STRIP */
.metrics-strip {
  display: flex;
  align-items: center;
  margin-top: 80px;
  border: 1px solid var(--border);
  overflow: hidden;
  animation: fade-up 0.8s 0.5s ease both;
}
.metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 40px;
  gap: 6px;
  background: rgba(255,255,255,0.015);
  transition: background 0.2s;
}
.metric:hover { background: var(--gold-glow2); }
.metric-val {
  font-family: var(--font-display);
  font-size: 38px;
  line-height: 1;
  color: var(--text);
}
.unit {
  font-size: 18px;
  color: var(--gold);
}
.metric-label {
  font-family: var(--font-body);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.metric-divider {
  width: 1px;
  height: 56px;
  background: var(--border);
  flex-shrink: 0;
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── FEATURES ── */
.features {
  position: relative;
  z-index: 1;
  padding: 120px 48px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.feature-card {
  padding: 36px 28px;
  background: rgba(255,255,255,0.015);
  transition: background 0.3s;
  position: relative;
}
.feature-card:hover {
  background: var(--gold-glow2);
}
.feature-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 28px;
  right: 28px;
  height: 1px;
  background: var(--border);
}

.feature-num {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--text);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 13px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.7;
}

/* ── VISUALS ── */
.visuals {
  position: relative;
  z-index: 1;
  padding: 120px 48px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-header {
  margin-bottom: 64px;
}
.section-tag {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--gold);
  display: block;
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(48px, 6vw, 80px);
  line-height: 0.95;
  letter-spacing: 0.02em;
}
.section-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--gold), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.center-header { text-align: center; }
.section-desc {
  max-width: 480px;
  margin: 20px auto 0;
  color: var(--muted);
  font-size: 15px;
  font-weight: 300;
  line-height: 1.8;
}

/* CARD GRID */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 50px;
}

.img-card {
  position: relative;
  cursor: default;
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1);
}
.img-card:hover { transform: translateY(-6px) rotate(0deg) !important; }

.card-tilt-left  { transform: rotate(-2.5deg); animation: float1 6s ease-in-out infinite; }
.card-center     { transform: rotate(0deg) translateY(-10px); animation: float2 7s ease-in-out infinite; }
.card-tilt-right { transform: rotate(2.5deg); animation: float3 5.5s ease-in-out infinite; }

@keyframes float1 {
  0%,100% { transform: rotate(-2.5deg) translateY(0); }
  50%     { transform: rotate(-2.5deg) translateY(-12px); }
}
@keyframes float2 {
  0%,100% { transform: rotate(0deg) translateY(-10px); }
  50%     { transform: rotate(0deg) translateY(-22px); }
}
@keyframes float3 {
  0%,100% { transform: rotate(2.5deg) translateY(0); }
  50%     { transform: rotate(2.5deg) translateY(-10px); }
}

.card-inner {
  border: 1px solid var(--border);
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  transition: box-shadow 0.3s, border-color 0.3s;
}
.img-card:hover .card-inner {
  border-color: rgba(255,184,0,0.3);
  box-shadow: 0 30px 80px rgba(0,0,0,0.6), 0 0 40px var(--gold-glow);
}

.card-img-wrap {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: #0F1219;
}
.card-img-wrap.img-placeholder::after {
  content: 'IMAGE';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: #222;
}
.img-placeholder {
  background-image:
    repeating-linear-gradient(45deg, #111 0, #111 1px, transparent 0, transparent 50%),
    repeating-linear-gradient(-45deg, #111 0, #111 1px, transparent 0, transparent 50%);
  background-size: 16px 16px;
  background-color: #0C0F18;
}

.card-scan-line {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0.6;
  animation: scan 3.5s linear infinite;
  top: 0;
}
@keyframes scan {
  from { top: 0; opacity: 0.6; }
  to   { top: 100%; opacity: 0; }
}

/* Corner brackets */
.card-corner {
  position: absolute;
  width: 12px; height: 12px;
  border-color: var(--gold);
  border-style: solid;
  opacity: 0;
  transition: opacity 0.3s;
}
.img-card:hover .card-corner { opacity: 0.6; }
.card-corner.tl { top: 8px; left: 8px;  border-width: 1px 0 0 1px; }
.card-corner.tr { top: 8px; right: 8px; border-width: 1px 1px 0 0; }
.card-corner.bl { bottom: 8px; left: 8px;  border-width: 0 0 1px 1px; }
.card-corner.br { bottom: 8px; right: 8px; border-width: 0 1px 1px 0; }

/* ── TECH STACK ── */
.tech-stack {
  position: relative;
  z-index: 1;
  padding: 120px 48px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.stack-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.stack-item {
  padding: 32px 24px;
  background: rgba(255,255,255,0.015);
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: background 0.2s;
  border-right: 1px solid var(--border);
}
.stack-item:nth-child(4n) { border-right: none; }
.stack-item:nth-child(n+5) { border-top: 1px solid var(--border); }

.stack-item:hover {
  background: var(--gold-glow2);
}

.stack-name {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.02em;
}

.stack-role {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
}

/* ── DEMO ── */
.demo {
  position: relative;
  z-index: 1;
  padding: 120px 48px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.video-wrapper {
  position: relative;
  margin-top: 56px;
}
.video-glow {
  position: absolute;
  inset: -40px;
  background: radial-gradient(ellipse 60% 50% at 50% 50%, var(--gold-glow), transparent 70%);
  pointer-events: none;
  animation: glow-pulse 4s ease-in-out infinite alternate;
}
@keyframes glow-pulse {
  from { opacity: 0.4; transform: scale(0.95); }
  to   { opacity: 0.8; transform: scale(1.05); }
}

.video-container {
  position: relative;
  border: 1px solid rgba(255,184,0,0.25);
  overflow: hidden;
  background: #080A10;
  box-shadow: 0 40px 120px rgba(0,0,0,0.7), inset 0 1px 0 rgba(255,255,255,0.04);
  min-height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.video-container video,
.video-container iframe {
  width: 100%;
  height: 100%;
  min-height: 480px;
  border: none;
  display: block;
}
.video-corner {
  position: absolute;
  width: 20px; height: 20px;
  border-color: var(--gold);
  border-style: solid;
  z-index: 2;
}
.video-corner.tl { top: 12px; left: 12px;  border-width: 2px 0 0 2px; }
.video-corner.tr { top: 12px; right: 12px; border-width: 2px 2px 0 0; }
.video-corner.bl { bottom: 12px; left: 12px;  border-width: 0 0 2px 2px; }
.video-corner.br { bottom: 12px; right: 12px; border-width: 0 2px 2px 0; }

.video-status {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--gold);
  z-index: 2;
}
.pulse-dot {
  animation: pulse-ring 2s ease-in-out infinite;
}
@keyframes pulse-ring {
  0%,100% { box-shadow: 0 0 0 0 rgba(255,184,0,0.5); }
  50%     { box-shadow: 0 0 0 6px rgba(255,184,0,0); }
}

/* ── CONTACT ── */
.contact {
  position: relative;
  z-index: 1;
  padding: 140px 48px 60px;
  border-top: 1px solid var(--border);
  text-align: center;
}
.contact::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 50% 50% at 50% 100%, rgba(255,184,0,0.04), transparent 70%);
  pointer-events: none;
}

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

.contact-title {
  font-family: var(--font-display);
  font-size: clamp(48px, 6vw, 80px);
  line-height: 0.95;
  letter-spacing: 0.02em;
  margin: 16px 0 24px;
}
.contact-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--gold), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.contact-desc {
  font-size: 15px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 52px;
}

.social-grid {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.social-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: all 0.2s;
}
.social-btn:hover {
  color: var(--gold);
  border-color: rgba(255,184,0,0.35);
  background: rgba(255,184,0,0.05);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px var(--gold-glow);
}
.social-icon {
  display: flex;
  align-items: center;
  opacity: 0.6;
  transition: opacity 0.2s;
}
.social-btn:hover .social-icon { opacity: 1; }

/* FOOTER */
.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 100px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  font-weight: 400;
  color: #333;
}
.footer-mono {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: #2A2A2A;
}

/* ── RESPONSIVE ── */
@media (max-width: 960px) {
  .nav { padding: 16px 24px; }
  .nav-cta { display: none; }
  .nav-links { gap: 20px; }
  .visuals, .demo, .features, .tech-stack { padding: 80px 24px; }
  .card-grid { grid-template-columns: 1fr 1fr; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
  .stack-item:nth-child(2n) { border-right: none; }
  .stack-item:nth-child(n+3) { border-top: 1px solid var(--border); }
  .metrics-strip { flex-wrap: wrap; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero { padding: 120px 20px 60px; }
  .hero-cta-row { flex-direction: column; }
  .metrics-strip { flex-direction: column; gap: 0; }
  .metric-divider { width: 60px; height: 1px; }
  .card-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .stack-grid { grid-template-columns: 1fr; }
  .stack-item { border-right: none !important; }
  .stack-item:nth-child(n+2) { border-top: 1px solid var(--border); }
  .contact { padding: 80px 24px 40px; }
  .footer { flex-direction: column; gap: 8px; text-align: center; }
  .video-container { min-height: 300px; }
  .video-container video,
  .video-container iframe { min-height: 300px; }
}