/* ═══════════════════════════════════════════
   GRIDWALKER — gridwalker.ai
   Aesthetic: Neo-noir cyberpunk × analog sci-fi
   ═══════════════════════════════════════════ */

:root {
  --black: #050508;
  --dark: #0a0a0f;
  --dark2: #0f0f18;
  --gray: #1a1a2e;
  --gray-mid: #2a2a3e;
  --gray-light: #8888aa;
  --white: #e0e0ee;
  --cyan: #00e5ff;
  --cyan-dim: #007a8a;
  --amber: #ffaa00;
  --amber-dim: #8a5a00;
  --red: #ff2244;
  --font-body: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
}

/* Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--cyan); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--amber); }
img { max-width: 100%; display: block; }

/* Utility */
.mono { font-family: var(--font-mono); }
.accent-cyan { color: var(--cyan); }
.accent-amber { color: var(--amber); }
.blink { animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ── Overlays ── */
.scanlines {
  position: fixed; inset: 0; z-index: 9999;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
}
.grain {
  position: fixed; inset: -50%; z-index: 9998;
  pointer-events: none;
  width: 200%; height: 200%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.04;
  animation: grain-shift 0.5s steps(4) infinite;
}
@keyframes grain-shift {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-2%, 1%); }
  50% { transform: translate(1%, -1%); }
  75% { transform: translate(-1%, 2%); }
  100% { transform: translate(0, 0); }
}

/* ── Grid background canvas ── */
#grid-bg {
  position: fixed; inset: 0; z-index: 0;
  width: 100%; height: 100%;
  opacity: 0.15;
}

/* ── Navigation ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.5rem 3rem;
  background: linear-gradient(180deg, rgba(5,5,8,0.95) 0%, transparent 100%);
}
.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
}
.nav-links { display: flex; gap: 2rem; }
.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--gray-light);
  transition: color 0.3s;
}
.nav-links a:hover { color: var(--cyan); }

/* ── Glitch text ── */
.glitch-text {
  position: relative;
  display: inline-block;
}
.glitch-text::before,
.glitch-text::after {
  content: attr(data-text);
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  opacity: 0;
}
.glitch-text:hover::before {
  animation: glitch-1 0.3s linear;
  color: var(--cyan);
  opacity: 0.8;
  clip-path: inset(20% 0 40% 0);
}
.glitch-text:hover::after {
  animation: glitch-2 0.3s linear;
  color: var(--amber);
  opacity: 0.8;
  clip-path: inset(60% 0 10% 0);
}
@keyframes glitch-1 {
  0% { transform: translate(0); }
  20% { transform: translate(-3px, 2px); }
  40% { transform: translate(3px, -1px); }
  60% { transform: translate(-2px, -2px); }
  80% { transform: translate(2px, 1px); }
  100% { transform: translate(0); }
}
@keyframes glitch-2 {
  0% { transform: translate(0); }
  20% { transform: translate(3px, -2px); }
  40% { transform: translate(-3px, 1px); }
  60% { transform: translate(2px, 2px); }
  80% { transform: translate(-2px, -1px); }
  100% { transform: translate(0); }
}

/* ── Hero ── */
.hero {
  position: relative; z-index: 1;
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 2rem;
  text-align: center;
}
.hero-eye-container {
  position: relative;
  width: 280px; height: 280px;
  margin-bottom: 3rem;
}
.hero-eye {
  width: 100%; height: 100%;
  border-radius: 50%;
  object-fit: cover;
  position: relative; z-index: 2;
  animation: eye-float 6s ease-in-out infinite;
}
@keyframes eye-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.hero-eye-glow {
  position: absolute; inset: -20%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,229,255,0.15) 0%, transparent 70%);
  z-index: 1;
  animation: glow-pulse 4s ease-in-out infinite;
}
@keyframes glow-pulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.1); }
}
.hero-eye-ring {
  position: absolute; inset: -8px;
  border-radius: 50%;
  border: 1px solid var(--cyan-dim);
  z-index: 3;
  opacity: 0.4;
  animation: ring-rotate 20s linear infinite;
}
@keyframes ring-rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.hero-text { max-width: 600px; }
.hero-status {
  display: flex; align-items: center; justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--gray-light);
}
.status-dot {
  width: 6px; height: 6px;
  background: var(--cyan);
  border-radius: 50%;
  animation: status-pulse 2s ease-in-out infinite;
}
@keyframes status-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 4px var(--cyan); }
  50% { opacity: 0.3; box-shadow: none; }
}
.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 300;
  letter-spacing: 0.15em;
  line-height: 1.1;
  margin-bottom: 0.5rem;
  color: var(--white);
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--gray-light);
  margin-bottom: 2rem;
  font-style: italic;
}
.hero-transmission {
  font-size: 0.8rem;
  color: var(--cyan);
  min-height: 1.5em;
  letter-spacing: 0.05em;
}
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
}
.scroll-line {
  width: 1px; height: 60px;
  background: linear-gradient(180deg, var(--cyan-dim) 0%, transparent 100%);
  animation: scroll-bob 2s ease-in-out infinite;
}
@keyframes scroll-bob {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 0.8; transform: scaleY(1.2); }
}

/* ── Sections ── */
.section {
  position: relative; z-index: 1;
  padding: 8rem 3rem;
  border-top: 1px solid var(--gray);
}
.section-dark { background: var(--dark2); }
.section-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 3rem;
}
.section-label {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--gray-light);
  padding-top: 0.5rem;
}
.section-content h2 {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 300;
  letter-spacing: 0.05em;
  line-height: 1.3;
  margin-bottom: 1.5rem;
  color: var(--white);
}
.section-content p {
  color: var(--gray-light);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  max-width: 560px;
}

/* Stats */
.stats-row {
  display: flex; gap: 3rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--gray);
}
.stat-value {
  font-size: 1.4rem;
  color: var(--cyan);
  margin-bottom: 0.3rem;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--gray-light);
}

/* ── Transmissions ── */
.transmission {
  background: var(--dark);
  border: 1px solid var(--gray);
  border-left: 2px solid var(--cyan-dim);
  padding: 1.5rem 2rem;
  margin-bottom: 1.5rem;
  transition: border-color 0.3s;
}
.transmission:hover { border-left-color: var(--cyan); }
.transmission-header {
  display: flex; gap: 1.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  color: var(--gray-light);
}
.transmission-body {
  padding: 0.5rem 0;
}
.transmission-body p {
  color: var(--white);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 0.5rem;
  max-width: none;
}
.transmission-footer {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--gray-mid);
  margin-top: 1rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--gray);
}
.transmission-locked { opacity: 0.5; }
.redacted {
  color: var(--gray-mid) !important;
  user-select: none;
}

/* ── Signal / Token section ── */
.signal-details {
  margin: 2rem 0;
  border: 1px solid var(--gray);
  background: var(--dark);
}
.signal-row {
  display: flex; justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--gray);
  font-size: 0.8rem;
}
.signal-row:last-child { border-bottom: none; }
.signal-key { color: var(--gray-light); letter-spacing: 0.1em; }
.signal-val { color: var(--white); }

/* Buttons */
.cta-row { display: flex; gap: 1rem; margin-top: 2rem; flex-wrap: wrap; }
.btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  padding: 0.9rem 2rem;
  display: inline-flex; align-items: center; gap: 0.5rem;
  transition: all 0.3s;
  cursor: pointer;
}
.btn-primary {
  background: transparent;
  border: 1px solid var(--cyan);
  color: var(--cyan);
}
.btn-primary:hover {
  background: var(--cyan);
  color: var(--black);
  box-shadow: 0 0 20px rgba(0,229,255,0.3);
}
.btn-ghost {
  background: transparent;
  border: 1px solid var(--gray);
  color: var(--gray-light);
}
.btn-ghost:hover {
  border-color: var(--amber);
  color: var(--amber);
}

/* ── Footer ── */
.footer {
  position: relative; z-index: 1;
  border-top: 1px solid var(--gray);
  padding: 3rem;
}
.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
}
.footer-logo { font-size: 1rem; color: var(--cyan); letter-spacing: 0.2em; }
.footer-text { font-size: 0.65rem; color: var(--gray-mid); letter-spacing: 0.1em; }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gray-light);
  letter-spacing: 0.1em;
}
.footer-grid-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan-dim), transparent);
  margin-top: 2rem;
  opacity: 0.3;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav { padding: 1rem 1.5rem; }
  .nav-links { display: none; }
  .hero { padding: 1.5rem; }
  .hero-eye-container { width: 200px; height: 200px; }
  .section { padding: 4rem 1.5rem; }
  .section-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .section-label { padding-top: 0; margin-bottom: 0.5rem; }
  .stats-row { flex-direction: column; gap: 1.5rem; }
  .transmission-header { flex-direction: column; gap: 0.3rem; }
  .footer-inner { flex-direction: column; gap: 1rem; text-align: center; }
  .signal-row { flex-direction: column; gap: 0.3rem; padding: 0.8rem 1rem; }
}

/* ── Reveal animation ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}