/* MultiStream landing — Dark greyscale theme */
:root {
  --bg: #0a0a0a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #f5f5f5;
  --text-secondary: #a0a0a0;
  --emerald: #4ade80;
  --grad: linear-gradient(135deg, #404040 0%, #525252 50%, #737373 100%);
  --grad-text: linear-gradient(135deg, #d4d4d4 0%, #a3a3a3 50%, #737373 100%);
  --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 20px 50px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 30px 80px rgba(0, 0, 0, 0.5);
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  color-scheme: dark;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 100px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: rgba(255, 255, 255, 0.2); }

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

/* ═══════════════════════════════════════════════════════════════
   ANIMATED BACKGROUND
   ═══════════════════════════════════════════════════════════════ */
.bg-gradient {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: 
    radial-gradient(ellipse 120% 60% at 50% 0%, rgba(255, 255, 255, 0.04), transparent 50%),
    radial-gradient(ellipse 80% 50% at 80% 80%, rgba(255, 255, 255, 0.03), transparent 50%),
    var(--bg);
}

.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: -1;
  animation: float 20s ease-in-out infinite;
}

.orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.06), transparent 70%);
  top: -200px; left: -100px;
  animation-delay: 0s;
}

.orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.04), transparent 70%);
  bottom: -150px; right: -100px;
  animation-delay: -7s;
}

.orb-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.03), transparent 70%);
  top: 40%; left: 60%;
  animation-delay: -14s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* ═══════════════════════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 32px;
  max-width: 1400px;
  margin: 0 auto;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}

.nav.scrolled {
  padding: 12px 32px;
  background: rgba(10, 10, 10, 0.95);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: var(--grad);
  display: grid;
  place-items: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.nav-brand:hover .brand-icon {
  transform: translateY(-2px) rotate(-3deg);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
}

.brand-icon svg { width: 20px; height: 20px; stroke: #fff; fill: none; }

.brand-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-links {
  display: flex;
  gap: 8px;
}

.nav-links a {
  padding: 8px 16px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  border-radius: 10px;
  transition: all 0.2s ease;
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

/* ═══════════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 15px;
  padding: 14px 28px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity 0.25s ease;
}

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

.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border: 1px solid var(--border-strong);
  backdrop-filter: blur(12px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-lg {
  padding: 18px 36px;
  font-size: 16px;
  border-radius: var(--radius-md);
}

/* ═══════════════════════════════════════════════════════════════
   HERO SECTION
   ═══════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 160px 32px 100px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  margin-bottom: 32px;
  animation: fadeInUp 0.8s ease forwards;
}

.hero-badge::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--emerald);
  box-shadow: 0 0 12px var(--emerald);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.2); }
}

.hero h1 {
  font-size: clamp(48px, 8vw, 88px);
  line-height: 1;
  letter-spacing: -0.04em;
  margin: 0 0 28px;
  font-weight: 800;
  animation: fadeInUp 0.8s ease 0.1s forwards;
  opacity: 0;
}

.hero h1 .highlight {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: none;
}

.hero-description {
  max-width: 640px;
  margin: 0 auto 40px;
  color: var(--text-secondary);
  font-size: 18px;
  line-height: 1.7;
  animation: fadeInUp 0.8s ease 0.2s forwards;
  opacity: 0;
}

.hero-description strong { color: var(--text); }

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
  animation: fadeInUp 0.8s ease 0.3s forwards;
  opacity: 0;
}

.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.4s forwards;
  opacity: 0;
}

.stat-item {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 32px;
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
}

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

/* ═══════════════════════════════════════════════════════════════
   SECTIONS
   ═══════════════════════════════════════════════════════════════ */
.section {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 32px;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(32px, 5vw, 48px);
  letter-spacing: -0.03em;
  margin: 0 0 16px;
  font-weight: 800;
  line-height: 1.1;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 17px;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ═══════════════════════════════════════════════════════════════
   PLATFORMS
   ═══════════════════════════════════════════════════════════════ */
.platforms-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.platform-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.platform-chip:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border-strong);
  color: var(--text);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.platform-chip svg {
  width: 20px; height: 20px;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.platform-chip.yt svg, .platform-chip.tv svg { width: 22px; height: 22px; }
.platform-chip.wide svg { width: auto; height: 16px; }

.platforms-note {
  text-align: center;
  margin-top: 24px;
  color: var(--text-secondary);
  font-size: 14px;
}

/* ═══════════════════════════════════════════════════════════════
   FEATURES
   ═══════════════════════════════════════════════════════════════ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  position: relative;
  padding: 32px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 20px 50px rgba(255, 255, 255, 0.06);
}

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

.feature-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.08);
}

.feature-icon svg {
  width: 24px; height: 24px;
  stroke: var(--text-secondary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-title {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: -0.02em;
}

.feature-desc {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
  margin: 0;
}

.feature-desc code {
  font-family: 'JetBrains Mono', 'Cascadia Code', monospace;
  font-size: 13px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  padding: 2px 8px;
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════════════════════════════
   STEPS / HOW IT WORKS
   ═══════════════════════════════════════════════════════════════ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 60px;
  left: 15%;
  right: 15%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
  z-index: 0;
}

.step-card {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 40px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border-radius: 16px;
  background: var(--grad);
  color: #fff;
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 24px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.step-title {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.step-desc {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
  margin: 0;
}

/* ═══════════════════════════════════════════════════════════════
   SECURITY / CTA SECTION
   ═══════════════════════════════════════════════════════════════ */
.cta-section {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px 100px;
}

.cta-card {
  position: relative;
  padding: 64px 48px;
  border-radius: var(--radius-xl);
  background: 
    radial-gradient(ellipse 80% 60% at 100% 0%, rgba(255, 255, 255, 0.04), transparent 50%),
    radial-gradient(ellipse 60% 40% at 0% 100%, rgba(255, 255, 255, 0.03), transparent 50%),
    var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.04), transparent 60%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
}

.cta-desc {
  color: var(--text-secondary);
  font-size: 17px;
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

.cta-features {
  display: flex;
  gap: 32px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.cta-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}

.cta-feature svg {
  width: 20px; height: 20px;
  color: var(--emerald);
}

/* ═══════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════ */
.footer {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 32px 60px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
}

.footer-brand .brand-icon {
  width: 32px; height: 32px;
  border-radius: 9px;
}

.footer-brand .brand-icon svg { width: 16px; height: 16px; stroke: #fff; fill: none; }

.footer-text {
  color: var(--text-secondary);
  font-size: 13px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 13px;
  transition: color 0.2s ease;
}

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

/* ═══════════════════════════════════════════════════════════════
   SCROLL REVEAL
   ═══════════════════════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

.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; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .orb { animation: none; }
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }
}

@media (max-width: 768px) {
  .nav { padding: 14px 20px; }
  .nav-links { display: none; }
  .hero { padding: 140px 20px 80px; }
  .hero h1 { font-size: 44px; }
  .hero-description { font-size: 16px; }
  .hero-stats { gap: 32px; }
  .section { padding: 70px 20px; }
  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .cta-card { padding: 48px 24px; }
  .cta-features { gap: 20px; }
  .footer { padding: 30px 20px 40px; flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 36px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { flex-direction: column; gap: 24px; }
}