/* ============================================
   SNR Labs — Main Stylesheet
   Signal to Noise Ratio
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;700&family=Inter:wght@300;400;500&family=JetBrains+Mono:wght@400;500&display=swap');

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

:root {
  --void:          #070708;
  --charcoal:      #111114;
  --surface:       #1a1a1f;
  --border:        #2a2a30;
  --signal-green:  #00ff88;
  --signal-blue:   #00d4ff;
  --static-white:  #f0f0f2;
  --muted:         #888899;
  --noise:         #333340;

  --font-display:  'Space Grotesk', sans-serif;
  --font-body:     'Inter', sans-serif;
  --font-mono:     'JetBrains Mono', monospace;

  --ease-out:      cubic-bezier(0.16, 1, 0.3, 1);
  --ease-signal:   cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
  background: var(--void);
  color: var(--static-white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── Grain Overlay ──────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  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 type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  opacity: 0.055;
  pointer-events: none;
  z-index: 9999;
  animation: grainShift 0.5s steps(1) infinite;
}

@keyframes grainShift {
  0%   { background-position: 0 0; }
  20%  { background-position: -40px -60px; }
  40%  { background-position: -80px 30px; }
  60%  { background-position: 60px -40px; }
  80%  { background-position: -20px 80px; }
  100% { background-position: 40px -20px; }
}

/* ── Typography ─────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.05em;
}

.signal-text {
  background: linear-gradient(135deg, var(--signal-green), var(--signal-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glow-green {
  text-shadow: 0 0 20px rgba(0, 255, 136, 0.6), 0 0 60px rgba(0, 255, 136, 0.2);
}

/* ── Navigation ─────────────────────────────── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(to bottom, rgba(7,7,8,0.9) 0%, transparent 100%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease-out);
}

nav.scrolled {
  border-bottom-color: var(--border);
}

.nav-logo {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--static-white);
}

.nav-cta {
  background: transparent;
  border: 1px solid var(--signal-green);
  color: var(--signal-green) !important;
  padding: 0.5rem 1.25rem;
  border-radius: 4px;
  transition: background 0.2s, box-shadow 0.2s !important;
}

.nav-cta:hover {
  background: rgba(0, 255, 136, 0.08) !important;
  box-shadow: 0 0 20px rgba(0, 255, 136, 0.2);
  color: var(--signal-green) !important;
}

/* ── Hero ───────────────────────────────────── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  overflow: hidden;
}

#noise-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.35;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--signal-green);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s var(--ease-out) 0.3s forwards;
}

.hero-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--signal-green);
  box-shadow: 0 0 8px var(--signal-green);
}

.hero-label::after {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--signal-green);
  box-shadow: 0 0 8px var(--signal-green);
}

.hero-headline {
  font-size: clamp(3rem, 8vw, 7rem);
  margin-bottom: 1.5rem;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 1s var(--ease-out) 0.5s forwards;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--muted);
  max-width: 520px;
  margin: 0 auto 3rem;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s var(--ease-out) 0.8s forwards;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s var(--ease-out) 1s forwards;
}

.btn-primary {
  padding: 0.875rem 2rem;
  background: linear-gradient(135deg, var(--signal-green), var(--signal-blue));
  color: var(--void);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 255, 136, 0.3);
}

.btn-secondary {
  padding: 0.875rem 2rem;
  background: transparent;
  color: var(--static-white);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: border-color 0.2s, background 0.2s;
}

.btn-secondary:hover {
  border-color: var(--noise);
  background: var(--surface);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--noise);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-indicator svg {
  opacity: 0.5;
}

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

/* ── Signal Bar Divider ─────────────────────── */
.signal-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--signal-green), var(--signal-blue), transparent);
  opacity: 0.3;
  position: relative;
}

.signal-divider::after {
  content: '';
  position: absolute;
  top: -2px;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(to right, transparent, var(--signal-green), var(--signal-blue), transparent);
  opacity: 0.15;
  filter: blur(4px);
}

/* ── Sections ───────────────────────────────── */
section {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

section.full-width {
  max-width: 100%;
  padding: 6rem 0;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--signal-green);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-label::before {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--signal-green);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  margin-bottom: 1.5rem;
}

.section-sub {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 560px;
  line-height: 1.7;
}

/* ── Philosophy / Narrative ─────────────────── */
#philosophy {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
}

.philosophy-visual {
  position: relative;
  height: 300px;
}

#signal-canvas {
  width: 100%;
  height: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
}

/* ── Products / Services ────────────────────── */
#work {
  text-align: center;
}

.work-header {
  margin-bottom: 4rem;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5px;
  background: var(--border);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  text-align: left;
}

.product-card {
  background: var(--charcoal);
  padding: 2.5rem;
  transition: background 0.3s;
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--signal-green), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.product-card:hover {
  background: var(--surface);
}

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

.product-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-icon svg {
  width: 100%;
  height: 100%;
}

.product-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--signal-green);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.product-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  color: var(--static-white);
}

.product-card p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.product-card .card-status {
  display: inline-block;
  margin-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--noise);
  letter-spacing: 0.1em;
}

.card-status.active {
  color: var(--signal-green);
}

.card-status.active::before {
  content: '● ';
  font-size: 0.5rem;
  vertical-align: middle;
}

/* ── Manifesto ──────────────────────────────── */
#manifesto {
  background: var(--charcoal);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 6rem 2rem;
  max-width: 100%;
  text-align: center;
}

#manifesto .inner {
  max-width: 720px;
  margin: 0 auto;
}

.manifesto-quote {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1.5rem;
  color: var(--static-white);
}

.manifesto-quote em {
  font-style: normal;
  background: linear-gradient(135deg, var(--signal-green), var(--signal-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.manifesto-body {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 560px;
  margin: 0 auto;
}

/* ── Contact ────────────────────────────────── */
#contact {
  text-align: center;
}

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

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2.5rem;
  text-align: left;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.form-group label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.form-group input,
.form-group textarea,
.form-group select {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--static-white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  border-radius: 4px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--signal-green);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.08);
}

.form-group textarea {
  min-height: 120px;
}

.form-group select option {
  background: var(--surface);
}

/* ── Footer ─────────────────────────────────── */
footer {
  background: var(--charcoal);
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-logo {
  height: 28px;
}

.footer-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--noise);
  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  color: var(--noise);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--muted);
}

/* ── Scroll Reveal ──────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ── Animations ─────────────────────────────── */
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 10px rgba(0, 255, 136, 0.2); }
  50%       { box-shadow: 0 0 30px rgba(0, 255, 136, 0.5); }
}

/* ── Responsive ─────────────────────────────── */
@media (max-width: 768px) {
  #philosophy {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}