/* ═══════════════════════════════════════════════════════
   WATCHMAN AI — FEYNMANO LANDING PAGE
   Premium Defense-Tech Design System
   ═══════════════════════════════════════════════════════ */

/* ── CUSTOM PROPERTIES ── */
:root {
  /* Core palette — LIGHT MODE */
  --bg-primary: #ffffff;
  --bg-secondary: #f5f7fa;
  --bg-card: #f0f2f5;
  --bg-card-hover: #e8ebf0;

  /* Accent — deep navy #030526 */
  --accent: #030526;
  --accent-dim: #1a1e3a;
  --accent-glow: rgba(3, 5, 38, 0.06);
  --accent-glow-strong: rgba(3, 5, 38, 0.14);

  /* Text */
  --text-primary: #0a0f1a;
  --text-secondary: #4a5568;
  --text-tertiary: #8895a7;

  /* Borders */
  --border: rgba(0, 0, 0, 0.08);
  --border-accent: rgba(3, 5, 38, 0.18);

  /* Spacing */
  --section-pad: clamp(80px, 12vw, 160px);
  --container-w: 1200px;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ── UTILITY ── */
.section-container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
  padding: 6px 14px;
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  background: var(--accent-glow);
}

.section-title {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.title-accent {
  background: linear-gradient(135deg, #030526 0%, #1a1e3a 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ═══════════════════════════════════════════════════════
   NAVBAR
   ═══════════════════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0 clamp(20px, 4vw, 48px);
  transition: background 0.4s ease, backdrop-filter 0.4s ease, border-color 0.4s ease;
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom-color: var(--border);
}

.nav-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.nav-logo {
  width: 28px;
  height: 28px;
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.3s ease;
  letter-spacing: 0.01em;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  color: var(--accent) !important;
  font-weight: 500;
  transition: all 0.3s var(--ease-out);
  background: transparent;
}

.nav-cta:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.cta-arrow {
  font-size: 0.9em;
  transition: transform 0.3s var(--ease-out);
}

.nav-cta:hover .cta-arrow {
  transform: translate(2px, -2px);
}

/* ═══════════════════════════════════════════════════════
   HERO SECTION
   ═══════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 120px clamp(20px, 4vw, 48px) 60px;
  overflow: hidden;
  background: url('images/hero_bg.png') center center / cover no-repeat;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-grid-bg canvas {
  width: 100%;
  height: 100%;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse 80% 70% at 50% 40%, rgba(255, 255, 255, 0.6) 0%, rgba(255, 255, 255, 0.93) 70%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.4) 0%, rgba(255, 255, 255, 0.98) 100%);
}

.hero-scanline {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.2;
  z-index: 2;
  animation: scanline 4s ease-in-out infinite;
}

@keyframes scanline {
  0% {
    top: 0;
    opacity: 0;
  }

  10% {
    opacity: 0.4;
  }

  90% {
    opacity: 0.4;
  }

  100% {
    top: 100%;
    opacity: 0;
  }
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 820px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  color: var(--accent);
  margin-bottom: 32px;
  padding: 8px 18px;
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  background: var(--accent-glow);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {

  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 0 0 var(--accent-glow-strong);
  }

  50% {
    opacity: 0.6;
    box-shadow: 0 0 0 8px transparent;
  }
}

.hero-title {
  font-size: clamp(2.5rem, 6.5vw, 5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: 28px;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 620px;
  margin: 0 auto 40px;
  font-weight: 400;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: var(--accent);
  color: var(--bg-primary);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 100px;
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.hero-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.2) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.hero-cta:hover::before {
  transform: translateX(100%);
}

.hero-cta:hover {
  box-shadow: 0 0 40px var(--accent-glow-strong), 0 8px 32px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.hero-cta svg {
  transition: transform 0.3s var(--ease-out);
}

.hero-cta:hover svg {
  transform: translate(3px, -3px);
}

/* Status bar */
.hero-status-bar {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 40px;
  padding: 16px 32px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
}

.status-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.status-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--text-tertiary);
  text-transform: uppercase;
}

.status-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.status-active {
  color: #030526;
  font-weight: 700;
  text-shadow: none;
}

/* ═══════════════════════════════════════════════════════
   SCENARIOS SECTION
   ═══════════════════════════════════════════════════════ */
.scenarios {
  padding: var(--section-pad) 0;
  position: relative;
}

.scenarios::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
}

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.scenario-card {
  position: relative;
  padding: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.5s var(--ease-out);
  overflow: hidden;
}

.scenario-card .card-image {
  display: block;
  width: 100%;
  height: 220px;
  object-fit: cover;
  object-position: center center;
}

.scenario-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 0.5s ease;
  z-index: 2;
}

.scenario-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-6px);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.08),
    0 0 40px var(--accent-glow);
}

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

.card-icon {
  width: 48px;
  height: 48px;
  color: var(--accent);
  margin-bottom: 24px;
  padding: 0 32px;
  opacity: 0.8;
  transition: opacity 0.3s ease;
}

.scenario-card:hover .card-icon {
  opacity: 1;
}

.card-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-tertiary);
  letter-spacing: 0.15em;
  margin-bottom: 16px;
  padding: 0 32px;
}

.card-title {
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  padding: 0 32px;
}

.card-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
  padding: 0 32px;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 32px 32px 32px;
}

.card-tags span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  color: var(--accent-dim);
  padding: 4px 10px;
  border: 1px solid rgba(3, 5, 38, 0.12);
  border-radius: 4px;
  background: rgba(3, 5, 38, 0.04);
}

/* ═══ IMAGE STRIP ═══ */
.image-strip {
  width: 100%;
  position: relative;
  overflow: hidden;
}

.image-strip img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  display: block;
}

.image-strip-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--bg-primary) 0%, transparent 15%, transparent 85%, var(--bg-primary) 100%);
  pointer-events: none;
}

/* ═══════════════════════════════════════════════════════
   PRODUCT SECTION
   ═══════════════════════════════════════════════════════ */
.product {
  padding: var(--section-pad) 0;
  position: relative;
  background: var(--bg-secondary);
}

.product-hero-image {
  width: 100%;
  border-radius: var(--radius-lg);
  margin-top: 40px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.1);
}

.product::before,
.product::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
}

.product::before {
  top: 0;
}

.product::after {
  bottom: 0;
}

.product-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.product-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 48px;
}

.product-specs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.spec-item {
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.6);
  text-align: center;
  transition: all 0.3s ease;
}

.spec-item:hover {
  border-color: var(--border-accent);
  background: var(--accent-glow);
}

.spec-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.spec-label {
  font-size: 0.72rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Product Diagram */
.product-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.product-diagram {
  position: relative;
  width: 380px;
  height: 380px;
}

.diagram-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.ring-outer {
  inset: 0;
  border-style: dashed;
  animation: spin-slow 30s linear infinite;
}

.ring-middle {
  inset: 60px;
  animation: spin-slow 20s linear infinite reverse;
}

.ring-inner {
  inset: 120px;
  background: var(--accent-glow);
  border-color: var(--accent);
  box-shadow: 0 0 40px var(--accent-glow), inset 0 0 30px var(--accent-glow);
}

@keyframes spin-slow {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.ring-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-align: center;
  text-transform: uppercase;
  pointer-events: none;
}

.ring-outer .ring-label {
  position: absolute;
  top: -24px;
  color: var(--text-tertiary);
}

.ring-middle .ring-label {
  position: absolute;
  bottom: -24px;
  color: var(--text-tertiary);
}

/* Data particles */
.data-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.p1 {
  animation: orbit1 6s linear infinite;
}

.p2 {
  animation: orbit1 6s linear infinite 2s;
}

.p3 {
  animation: orbit2 5s linear infinite;
}

.p4 {
  animation: orbit2 5s linear infinite 2.5s;
}

.p5 {
  animation: orbit3 4s linear infinite;
}

.p6 {
  animation: orbit3 4s linear infinite 2s;
}

@keyframes orbit1 {
  from {
    transform: rotate(0deg) translateX(190px) rotate(0deg);
  }

  to {
    transform: rotate(360deg) translateX(190px) rotate(-360deg);
  }
}

@keyframes orbit2 {
  from {
    transform: rotate(0deg) translateX(130px) rotate(0deg);
  }

  to {
    transform: rotate(-360deg) translateX(130px) rotate(360deg);
  }
}

@keyframes orbit3 {
  from {
    transform: rotate(0deg) translateX(70px) rotate(0deg);
  }

  to {
    transform: rotate(360deg) translateX(70px) rotate(-360deg);
  }
}

/* Sensor labels */
.sensor-label {
  position: absolute;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--text-tertiary);
  text-transform: uppercase;
}

.sl-top {
  top: -36px;
  left: 50%;
  transform: translateX(-50%);
}

.sl-right {
  right: -52px;
  top: 50%;
  transform: translateY(-50%);
}

.sl-bottom {
  bottom: -36px;
  left: 50%;
  transform: translateX(-50%);
}

.sl-left {
  left: -60px;
  top: 50%;
  transform: translateY(-50%);
}

/* ═══════════════════════════════════════════════════════
   DIFFERENTIATOR SECTION
   ═══════════════════════════════════════════════════════ */
.differentiator {
  padding: var(--section-pad) 0;
  position: relative;
}

.diff-header {
  text-align: center;
  margin-bottom: 72px;
}

.diff-intro {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.7;
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.diff-card {
  padding: 40px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.5s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.diff-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.5s ease;
}

.diff-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.06), 0 0 30px var(--accent-glow);
}

.diff-card:hover::after {
  opacity: 1;
}

.diff-icon {
  width: 32px;
  height: 32px;
  color: var(--accent);
  margin-bottom: 24px;
}

.diff-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.diff-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ═══════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════ */
.footer {
  padding: 80px 0 40px;
  position: relative;
  border-top: 1px solid var(--border);
}

.footer-top {
  text-align: center;
  margin-bottom: 40px;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-logo {
  width: 28px;
  height: 28px;
  color: var(--accent);
}

.footer-brand h3 {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.footer-tagline {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-style: italic;
}

.footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

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

.footer-links a span {
  display: inline-block;
  transition: transform 0.3s var(--ease-out);
}

.footer-links a:hover span {
  transform: translate(2px, -2px);
}

.footer-divider {
  color: var(--text-tertiary);
  font-size: 0.8rem;
}

.footer-bottom {
  display: flex;
  justify-content: center;
  gap: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.footer-bottom span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--text-tertiary);
  letter-spacing: 0.05em;
}

/* ═══════════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════════ */

/* Scroll reveal */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════ */
@media (max-width: 1024px) {

  .scenarios-grid,
  .diff-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin: 0 auto;
  }

  .product-layout {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .product-diagram {
    width: 300px;
    height: 300px;
  }

  .ring-middle {
    inset: 50px;
  }

  .ring-inner {
    inset: 100px;
  }

  @keyframes orbit1 {
    from {
      transform: rotate(0deg) translateX(150px) rotate(0deg);
    }

    to {
      transform: rotate(360deg) translateX(150px) rotate(-360deg);
    }
  }

  @keyframes orbit2 {
    from {
      transform: rotate(0deg) translateX(100px) rotate(0deg);
    }

    to {
      transform: rotate(-360deg) translateX(100px) rotate(360deg);
    }
  }

  @keyframes orbit3 {
    from {
      transform: rotate(0deg) translateX(50px) rotate(0deg);
    }

    to {
      transform: rotate(360deg) translateX(50px) rotate(-360deg);
    }
  }
}

@media (max-width: 768px) {
  .nav-links a:not(.nav-cta) {
    display: none;
  }

  .hero-status-bar {
    gap: 20px;
    padding: 12px 20px;
    flex-wrap: wrap;
    justify-content: center;
    width: 90%;
  }

  .product-specs {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }
}

/* ═══════════════════════════════════════════════════════
   CUSTOM SCROLLBAR
   ═══════════════════════════════════════════════════════ */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--text-tertiary);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* ═══════════════════════════════════════════════════════
   SELECTION
   ═══════════════════════════════════════════════════════ */
::selection {
  background: var(--accent);
  color: var(--bg-primary);
}