/* VAJRA CAST - Broadcast Control Room */

/* ═══════════════════════════════════════
   DESIGN TOKENS
   ═══════════════════════════════════════ */
:root {
  /* Colors - Control Room Palette */
  --bg-deep: #0B0E11;
  --bg-surface: #12161C;
  --bg-elevated: #1a1f27;
  --text-primary: #E6EAF0;
  --text-secondary: #9AA4B2;
  --text-muted: #5c6370;
  --accent: #2F80FF;
  --accent-dim: rgba(47, 128, 255, 0.15);
  --accent-glow: rgba(47, 128, 255, 0.4);
  --cyan: #56CCF2;
  --green: #00D26A;
  --amber: #FFB020;
  --red: #FF4757;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);

  /* Typography */
  --font-display: 'JetBrains Mono', monospace;
  --font-body: 'Inter', system-ui, sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;
  --space-3xl: 8rem;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 64px;
}

/* ═══════════════════════════════════════
   GLOBAL EFFECTS
   ═══════════════════════════════════════ */

/* Scanline overlay for broadcast feel */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

/* Noise texture */
body::after {
  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)'/%3E%3C/svg%3E");
  opacity: 0.02;
  pointer-events: none;
  z-index: 9998;
}

/* Animations */
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
  50% { box-shadow: 0 0 40px var(--accent-glow), 0 0 60px rgba(47, 128, 255, 0.2); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

@keyframes slide-up {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
  /* Subtle grid pattern */
  background-image:
    linear-gradient(rgba(47, 128, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47, 128, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  background-position: center center;
}

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

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

/* ═══════════════════════════════════════
   INTRO SCREEN
   ═══════════════════════════════════════ */
.intro {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: #050a12;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s ease, visibility 0.8s ease;
  overflow: hidden;
}

/* Ambilight effect - very subtle, flirting with black */
.intro::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(
    ellipse 60% 50% at 50% 50%,
    rgba(0, 120, 180, 0.12) 0%,
    rgba(0, 80, 140, 0.06) 40%,
    rgba(0, 40, 80, 0.02) 70%,
    transparent 100%
  );
  animation: ambilight-pulse 4s ease-in-out infinite;
}

@keyframes ambilight-pulse {
  0%, 100% {
    opacity: 0.7;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.03);
  }
}

/* Particle Canvas */
.particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 2;
  pointer-events: none;
}

/* Broadcast frame corners */
.intro-corner {
  position: absolute;
  width: 60px;
  height: 60px;
  border-color: rgba(0, 168, 255, 0.5);
  border-style: solid;
  border-width: 0;
  z-index: 15;
}

.intro-corner-tl {
  top: 30px;
  left: 30px;
  border-top-width: 2px;
  border-left-width: 2px;
}

.intro-corner-tr {
  top: 30px;
  right: 30px;
  border-top-width: 2px;
  border-right-width: 2px;
}

.intro-corner-bl {
  bottom: 30px;
  left: 30px;
  border-bottom-width: 2px;
  border-left-width: 2px;
}

.intro-corner-br {
  bottom: 30px;
  right: 30px;
  border-bottom-width: 2px;
  border-right-width: 2px;
}

.intro-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.intro-video {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  z-index: 10;
}

/* Portrait mode: video takes full width, centered vertically */
@media (orientation: portrait) {
  .intro-video {
    width: 100%;
    height: auto;
  }
}

/* Landscape mode: video can fill height */
@media (orientation: landscape) {
  .intro-video {
    width: auto;
    height: 100%;
    max-width: 100%;
  }
}

.intro-play {
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-lg);
  background: rgba(11, 14, 17, 0.8);
  border: 2px solid var(--border-hover);
  border-radius: 50%;
  width: 140px;
  height: 140px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.4s ease;
}

/* Outer ring animation */
.intro-play::before {
  content: '';
  position: absolute;
  inset: -8px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  opacity: 0.3;
  animation: ring-pulse 3s ease infinite;
}

.intro-play::after {
  content: '';
  position: absolute;
  inset: -16px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  opacity: 0.15;
  animation: ring-pulse 3s ease 0.5s infinite;
}

@keyframes ring-pulse {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.05); opacity: 0.1; }
}

.intro-play svg {
  width: 48px;
  height: 48px;
  filter: drop-shadow(0 0 10px var(--accent-glow));
  transition: transform 0.3s ease;
}

.intro-play span {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.intro-play:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
  transform: scale(1.05);
  box-shadow: 0 0 60px var(--accent-glow);
}

.intro-play:hover svg {
  transform: scale(1.1);
}

.intro-play:hover span {
  color: var(--text-primary);
}

.intro-skip {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.3s ease, color 0.3s ease;
}

.intro-skip:hover {
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════
   SITE WRAPPER
   ═══════════════════════════════════════ */
.site {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
  position: relative;
}

/* Vignette effect for cinematic feel */
.site::before {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 0%, transparent 50%, rgba(0,0,0,0.4) 100%);
  pointer-events: none;
  z-index: 50;
}

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

/* ═══════════════════════════════════════
   BROADCAST INDICATOR
   ═══════════════════════════════════════ */
.broadcast-indicator {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-lg);
  z-index: 200;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.375rem 0.75rem;
  background: rgba(255, 71, 87, 0.15);
  border: 1px solid rgba(255, 71, 87, 0.3);
  border-radius: 4px;
  animation: fade-in 0.5s ease 0.8s backwards;
}

.rec-dot {
  width: 8px;
  height: 8px;
  background: var(--red);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--red);
  animation: blink 1s ease infinite;
}

.rec-label {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--red);
}

/* ═══════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background: transparent;
  transition: background 0.3s ease, backdrop-filter 0.3s ease;
}

.nav-scrolled {
  background: rgba(11, 14, 17, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

/* Animated accent line under nav when scrolled */
.nav-scrolled::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--accent) 20%,
    var(--cyan) 50%,
    var(--accent) 80%,
    transparent 100%
  );
  opacity: 0.5;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.5rem;
  margin: -0.5rem;
  border-radius: 6px;
  transition: background 0.3s ease;
}

.nav-brand:hover {
  background: var(--accent-dim);
}

.nav-logo {
  font-size: 1.5rem;
  color: var(--accent);
  transition: all 0.3s ease;
  text-shadow: 0 0 10px var(--accent-glow);
}

.nav-brand:hover .nav-logo {
  transform: rotate(45deg);
  text-shadow: 0 0 20px var(--accent-glow);
}

.nav-name {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links a {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

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

.nav-cta {
  padding: 0.5rem 1rem !important;
  background: var(--accent) !important;
  color: var(--text-primary) !important;
  border-radius: 4px;
  transition: background 0.2s ease !important;
}

.nav-cta:hover {
  background: #1a6fe6 !important;
}

/* ═══════════════════════════════════════
   HERO
   ═══════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--space-2xl);
  padding: calc(var(--nav-height) + var(--space-2xl)) var(--space-lg) var(--space-2xl);
  max-width: var(--max-width);
  margin: 0 auto;
}

/* Live status indicator */
.hero-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
  padding: 0.375rem 0.875rem;
  background: rgba(0, 210, 106, 0.1);
  border: 1px solid rgba(0, 210, 106, 0.3);
  border-radius: 100px;
  animation: slide-up 0.6s ease backwards;
}

.status-dot {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: blink 2s ease infinite;
  box-shadow: 0 0 8px var(--green);
}

.status-label {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  color: var(--green);
}

.hero-badge {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: var(--space-md);
  padding: 0.5rem 1rem;
  background: var(--accent-dim);
  border: 1px solid rgba(47, 128, 255, 0.3);
  border-radius: 4px;
  display: inline-block;
  animation: slide-up 0.6s ease 0.1s backwards;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 600;
  line-height: 1.1;
  margin-bottom: var(--space-md);
  animation: slide-up 0.6s ease 0.2s backwards;
}

.hero-accent {
  color: var(--accent);
  text-shadow: 0 0 40px var(--accent-glow);
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin-bottom: var(--space-xl);
  animation: slide-up 0.6s ease 0.3s backwards;
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  animation: slide-up 0.6s ease 0.4s backwards;
}

/* Scroll indicator */
.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-2xl);
  animation: fade-in 1s ease 1s backwards;
}

.scroll-indicator span {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 20px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scroll-pulse 2s ease infinite;
}

@keyframes scroll-pulse {
  0% { top: -20px; opacity: 0; }
  30% { opacity: 1; }
  100% { top: 60px; opacity: 0; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.5rem;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 4px;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #1a6fe6 50%, var(--accent) 100%);
  background-size: 200% 200%;
  color: var(--text-primary);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.1) 50%, transparent 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.btn-primary:hover {
  animation: gradient-shift 2s ease infinite;
  box-shadow: 0 0 30px var(--accent-glow);
}

.btn-primary:hover::before {
  opacity: 1;
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-hover);
}

.btn-ghost:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

/* ═══════════════════════════════════════
   FLOW DIAGRAM - Animated Data Routing
   ═══════════════════════════════════════ */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fade-in 0.8s ease 0.5s backwards;
}

.flow-diagram {
  display: flex;
  align-items: center;
  gap: 0;
  padding: var(--space-lg);
  background: rgba(12, 16, 22, 0.8);
  border: 1px solid var(--border);
  border-radius: 12px;
  position: relative;
  backdrop-filter: blur(10px);
}

/* Ambient glow */
.flow-diagram::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, rgba(0, 200, 255, 0.1), transparent, rgba(86, 204, 242, 0.1));
  border-radius: 14px;
  z-index: -1;
}

/* INPUT SIDE */
.flow-inputs {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.flow-input {
  display: flex;
  align-items: center;
  gap: 8px;
}

.flow-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  min-width: 50px;
  text-align: right;
  transition: color 0.3s ease;
}

.flow-input:hover .flow-label,
.flow-output:hover .flow-label {
  color: var(--cyan);
}

/* Flow lines */
.flow-line {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--border), rgba(0, 200, 255, 0.3));
  position: relative;
  overflow: hidden;
}

.input-line {
  background: linear-gradient(90deg, var(--border), rgba(0, 200, 255, 0.5));
}

.output-line {
  background: linear-gradient(90deg, rgba(0, 200, 255, 0.5), var(--border));
}

/* Data packets - animated */
.data-packet {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 4px;
  background: var(--cyan);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--cyan), 0 0 15px rgba(0, 200, 255, 0.5);
}

.input-line .data-packet {
  animation: packet-in 2s ease-in-out infinite;
}

.output-line .data-packet {
  animation: packet-out 2s ease-in-out infinite;
}

/* Stagger packet animations */
.flow-input:nth-child(1) .data-packet { animation-delay: 0s; }
.flow-input:nth-child(2) .data-packet { animation-delay: 0.3s; }
.flow-input:nth-child(3) .data-packet { animation-delay: 0.6s; }

.flow-output:nth-child(1) .data-packet { animation-delay: 0.8s; }
.flow-output:nth-child(2) .data-packet { animation-delay: 0.95s; }
.flow-output:nth-child(3) .data-packet { animation-delay: 1.1s; }
.flow-output:nth-child(4) .data-packet { animation-delay: 1.25s; }
.flow-output:nth-child(5) .data-packet { animation-delay: 1.4s; }

@keyframes packet-in {
  0% { left: -10px; opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { left: 60px; opacity: 0; }
}

@keyframes packet-out {
  0% { left: -10px; opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { left: 60px; opacity: 0; }
}

/* CORE - Central processing unit */
.flow-core {
  width: 90px;
  height: 90px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 8px;
}

.core-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid;
}

.core-ring-outer {
  inset: 0;
  border-color: rgba(0, 200, 255, 0.3);
  animation: ring-rotate 20s linear infinite;
}

.core-ring-outer::before {
  content: '';
  position: absolute;
  top: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--cyan);
}

.core-ring-inner {
  inset: 12px;
  border-color: rgba(47, 128, 255, 0.4);
  animation: ring-rotate 15s linear infinite reverse;
}

.core-ring-inner::before {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent);
}

@keyframes ring-rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.core-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  background: radial-gradient(circle, rgba(0, 200, 255, 0.15) 0%, var(--bg-deep) 70%);
  border: 1px solid rgba(0, 200, 255, 0.3);
  border-radius: 50%;
  z-index: 1;
}

.core-center span {
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--cyan);
  line-height: 1;
}

.core-sub {
  font-size: 0.5rem !important;
  color: var(--text-muted) !important;
  margin-top: 2px;
}

/* Pulse effect on core */
.core-center::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid var(--cyan);
  opacity: 0;
  animation: core-pulse 2s ease-out infinite;
}

@keyframes core-pulse {
  0% { transform: scale(0.8); opacity: 0.5; }
  100% { transform: scale(1.5); opacity: 0; }
}

/* OUTPUT SIDE */
.flow-outputs {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.flow-output {
  display: flex;
  align-items: center;
  gap: 8px;
}

.flow-output .flow-label {
  text-align: left;
  min-width: 60px;
}

/* ═══════════════════════════════════════
   SECTIONS
   ═══════════════════════════════════════ */
.section {
  padding: var(--space-3xl) var(--space-lg);
}

.section-dark {
  background: var(--bg-surface);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-header {
  margin-bottom: var(--space-2xl);
}

.section-number {
  font-family: var(--font-display);
  font-size: 0.875rem;
  letter-spacing: 0.3em;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  padding: 0.25rem 0.75rem;
  background: var(--accent-dim);
  border: 1px solid rgba(47, 128, 255, 0.2);
  border-radius: 4px;
}

.section-number::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--accent-glow);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════
   FLOW STAGES
   ═══════════════════════════════════════ */
.flow-stages {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.flow-stage {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--space-lg);
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
  border-radius: 8px;
  margin: 0 -1rem;
  padding-left: 1rem;
  padding-right: 1rem;
}

.flow-stage:hover {
  background: rgba(47, 128, 255, 0.03);
}

.flow-stage:last-child {
  border-bottom: none;
}

.stage-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border: 1px solid rgba(47, 128, 255, 0.3);
  border-radius: 8px;
  color: var(--accent);
  transition: all 0.3s ease;
  position: relative;
}

.stage-icon::before {
  content: '';
  position: absolute;
  inset: -4px;
  border: 1px solid var(--accent);
  border-radius: 12px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.flow-stage:hover .stage-icon {
  background: rgba(47, 128, 255, 0.25);
  box-shadow: 0 0 30px var(--accent-glow);
}

.flow-stage:hover .stage-icon::before {
  opacity: 0.3;
}

.stage-icon svg {
  width: 32px;
  height: 32px;
  transition: transform 0.3s ease;
}

.flow-stage:hover .stage-icon svg {
  transform: scale(1.1);
}

.stage-content h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.stage-content p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  max-width: 600px;
}

.stage-protocols {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.stage-protocols span {
  font-family: var(--font-display);
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-secondary);
}

.stage-modes {
  display: flex;
  gap: var(--space-md);
}

.mode {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--space-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  min-width: 120px;
}

.mode-name {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.mode-value {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--cyan);
}

.flow-connector {
  width: 2px;
  height: 40px;
  background: linear-gradient(to bottom, var(--border), var(--accent), var(--border));
  margin-left: 31px;
  position: relative;
  overflow: hidden;
}

/* Animated pulse traveling down the connector */
.flow-connector::after {
  content: '';
  position: absolute;
  top: -10px;
  left: -2px;
  width: 6px;
  height: 10px;
  background: var(--cyan);
  border-radius: 3px;
  box-shadow: 0 0 10px var(--cyan);
  animation: flow-down 2s ease infinite;
}

@keyframes flow-down {
  0% { top: -10px; opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { top: 40px; opacity: 0; }
}

/* ═══════════════════════════════════════
   FEATURES
   ═══════════════════════════════════════ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-md);
}

.feature {
  padding: var(--space-lg);
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 30px var(--accent-dim);
}

.feature:hover::before {
  opacity: 1;
}

.feature-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.feature-icon {
  font-size: 1.25rem;
  color: var(--accent);
  transition: transform 0.3s ease, text-shadow 0.3s ease;
}

.feature:hover .feature-icon {
  transform: scale(1.2);
  text-shadow: 0 0 20px var(--accent-glow);
}

.feature-header h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
}

.feature p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ═══════════════════════════════════════
   PROTOCOLS
   ═══════════════════════════════════════ */
.protocols-table {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.protocol-group-title {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border);
}

.protocol-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.protocol {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-sm);
  padding-left: calc(var(--space-sm) + 20px);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: all 0.3s ease;
  position: relative;
}

/* Signal indicator */
.protocol::before {
  content: '';
  position: absolute;
  left: var(--space-sm);
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--green);
  opacity: 0.6;
  transition: all 0.3s ease;
}

.protocol:hover {
  border-color: var(--accent);
  background: var(--bg-elevated);
  transform: translateX(4px);
}

.protocol:hover::before {
  opacity: 1;
  animation: blink 1s ease infinite;
}

.protocol-name {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.protocol-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════
   SPECS
   ═══════════════════════════════════════ */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.spec {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-lg);
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
}

.spec::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40%;
  height: 3px;
  background: var(--accent);
  border-radius: 3px 3px 0 0;
  opacity: 0.5;
  transition: all 0.3s ease;
}

.spec:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.spec:hover::after {
  width: 80%;
  opacity: 1;
  box-shadow: 0 0 20px var(--accent-glow);
}

.spec-value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  text-shadow: 0 0 30px var(--accent-glow);
}

.spec-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.tech-stack {
  padding: var(--space-xl);
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-align: center;
  position: relative;
}

/* Circuit board pattern */
.tech-stack::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(47, 128, 255, 0.05) 0%, transparent 30%),
    radial-gradient(circle at 80% 70%, rgba(86, 204, 242, 0.05) 0%, transparent 30%);
  pointer-events: none;
}

.tech-stack h4 {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
  position: relative;
}

.stack-items {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  position: relative;
}

.stack-items span {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  padding: 0.625rem 1.25rem 0.625rem 1.75rem;
  background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-elevated) 100%);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-secondary);
  transition: all 0.3s ease;
  position: relative;
}

.stack-items span::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: all 0.3s ease;
}

.stack-items span:hover {
  border-color: var(--accent);
  color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(47, 128, 255, 0.2);
}

.stack-items span:hover::before {
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
}

/* ═══════════════════════════════════════
   USE CASES
   ═══════════════════════════════════════ */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

.usecase {
  padding: var(--space-lg);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.3s ease;
  position: relative;
}

/* Corner brackets like broadcast safe area */
.usecase::before,
.usecase::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border-color: var(--cyan);
  border-style: solid;
  border-width: 0;
  opacity: 0;
  transition: all 0.3s ease;
}

.usecase::before {
  top: 8px;
  left: 8px;
  border-top-width: 2px;
  border-left-width: 2px;
}

.usecase::after {
  bottom: 8px;
  right: 8px;
  border-bottom-width: 2px;
  border-right-width: 2px;
}

.usecase:hover {
  border-color: var(--cyan);
  transform: scale(1.02);
  box-shadow: 0 8px 32px rgba(86, 204, 242, 0.1);
}

.usecase:hover::before,
.usecase:hover::after {
  opacity: 1;
}

.usecase h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--cyan);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.usecase h3::before {
  content: '▸';
  font-size: 0.75rem;
}

.usecase p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ═══════════════════════════════════════
   INTERFACE - Screenshots
   ═══════════════════════════════════════ */
.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.screenshot-card {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.screenshot-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.screenshot-featured {
  grid-column: span 2;
  grid-row: span 2;
}

.screenshot-placeholder {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-elevated) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

/* Scanline effect on placeholder */
.screenshot-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 200, 255, 0.02) 2px,
    rgba(0, 200, 255, 0.02) 4px
  );
  pointer-events: none;
}

.screenshot-featured .screenshot-placeholder {
  aspect-ratio: 16/9;
}

.placeholder-icon {
  width: 64px;
  height: 64px;
  color: var(--text-muted);
  opacity: 0.5;
  transition: all 0.3s ease;
}

.screenshot-card:hover .placeholder-icon {
  color: var(--accent);
  opacity: 0.8;
  transform: scale(1.1);
}

.screenshot-featured .placeholder-icon {
  width: 80px;
  height: 80px;
}

.placeholder-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.placeholder-hint {
  font-size: 0.6875rem;
  color: var(--text-muted);
  opacity: 0.6;
}

.screenshot-info {
  padding: var(--space-md);
}

.screenshot-info h4 {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.screenshot-info p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ═══════════════════════════════════════
   TUTORIALS - Video Placeholders
   ═══════════════════════════════════════ */
.tutorials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}

.tutorial-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.tutorial-card:hover {
  border-color: var(--cyan);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(86, 204, 242, 0.1);
}

.video-placeholder {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--bg-deep) 0%, var(--bg-surface) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border-bottom: 1px solid var(--border);
}

/* Grid pattern on video placeholder */
.video-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 200, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 200, 255, 0.03) 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
}

.play-button {
  width: 64px;
  height: 64px;
  background: rgba(0, 200, 255, 0.1);
  border: 2px solid var(--cyan);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
}

.play-button svg {
  width: 24px;
  height: 24px;
  margin-left: 4px;
}

.tutorial-card:hover .play-button {
  background: var(--cyan);
  color: var(--bg-deep);
  transform: scale(1.1);
  box-shadow: 0 0 30px rgba(86, 204, 242, 0.4);
}

/* Animated ring on hover */
.play-button::before {
  content: '';
  position: absolute;
  inset: -8px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  opacity: 0;
  transition: all 0.3s ease;
}

.tutorial-card:hover .play-button::before {
  opacity: 0.5;
  animation: ring-pulse 2s ease infinite;
}

.video-duration {
  position: absolute;
  bottom: var(--space-sm);
  right: var(--space-sm);
  font-family: var(--font-display);
  font-size: 0.6875rem;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.6);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.tutorial-info {
  padding: var(--space-md);
}

.tutorial-info h4 {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.tutorial-info p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ═══════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════ */
.footer {
  padding: var(--space-2xl) var(--space-lg) var(--space-lg);
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  position: relative;
}

/* Top accent line */
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--accent) 30%,
    var(--cyan) 50%,
    var(--accent) 70%,
    transparent 100%
  );
  opacity: 0.4;
}

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-xl);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}

.footer-logo {
  font-size: 1.5rem;
  color: var(--accent);
}

.footer-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
}

.footer-tagline {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.footer-email {
  font-family: var(--font-display);
  font-size: 0.875rem;
  color: var(--accent);
  transition: color 0.2s ease;
}

.footer-email:hover {
  color: var(--cyan);
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: var(--space-xs) 0;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.signal-meter {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 16px;
}

.signal-meter .bar {
  width: 4px;
  background: var(--green);
  border-radius: 1px;
  animation: signal-pulse 2s ease infinite;
}

.bar-1 { height: 4px; animation-delay: 0s; }
.bar-2 { height: 7px; animation-delay: 0.1s; }
.bar-3 { height: 10px; animation-delay: 0.2s; }
.bar-4 { height: 13px; animation-delay: 0.3s; }
.bar-5 { height: 16px; animation-delay: 0.4s; }

@keyframes signal-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.footer-status {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--green);
  text-transform: uppercase;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-version {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 0.25rem 0.5rem;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 4px;
}

/* ═══════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════ */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .scroll-indicator {
    display: none;
  }

  /* Flow diagram responsive - vertical layout */
  .hero-visual {
    display: flex;
    margin-top: var(--space-xl);
  }

  .flow-diagram {
    flex-direction: column;
    padding: var(--space-md);
    gap: var(--space-sm);
  }

  .flow-inputs,
  .flow-outputs {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
  }

  .flow-input,
  .flow-output {
    flex-direction: column;
    gap: 4px;
  }

  .flow-input .flow-label,
  .flow-output .flow-label {
    text-align: center;
    min-width: auto;
    font-size: 0.6rem;
  }

  .flow-line {
    width: 2px;
    height: 30px;
  }

  .input-line {
    background: linear-gradient(180deg, var(--border), rgba(0, 200, 255, 0.5));
  }

  .output-line {
    background: linear-gradient(180deg, rgba(0, 200, 255, 0.5), var(--border));
  }

  .input-line .data-packet,
  .output-line .data-packet {
    width: 4px;
    height: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: packet-down 2s ease-in-out infinite;
  }

  @keyframes packet-down {
    0% { top: -10px; opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { top: 30px; opacity: 0; }
  }

  .flow-core {
    width: 70px;
    height: 70px;
    margin: var(--space-sm) 0;
  }

  .core-ring-inner {
    inset: 10px;
  }

  .core-center {
    width: 44px;
    height: 44px;
  }

  .core-center span {
    font-size: 0.5rem;
  }

  .nav-links a:not(.nav-cta) {
    display: none;
  }

  .broadcast-indicator {
    display: none;
  }

  .protocols-table {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .footer-meta {
    order: 2;
  }

  .footer-version {
    order: 3;
  }
}

@media (max-width: 900px) {
  .screenshots-grid {
    grid-template-columns: 1fr 1fr;
  }

  .screenshot-featured {
    grid-column: span 2;
    grid-row: span 1;
  }
}

@media (max-width: 600px) {
  .flow-stage {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .flow-connector {
    display: none;
  }

  .stage-modes {
    flex-direction: column;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

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

  .screenshots-grid {
    grid-template-columns: 1fr;
  }

  .screenshot-featured {
    grid-column: span 1;
  }

  .tutorials-grid {
    grid-template-columns: 1fr;
  }
}