/* ─── 3D INTRO SCROLL CONTAINER ─── */
#intro-scroll-container {
  position: relative;
  width: 100%;
  height: 680vh; /* Extends down to create scrolling milestones - made longer! */
  margin-top: -142px; /* Pulls the container up to cover the ticker (36px) + nav (106px) space! */
  background: #03050b;
  z-index: 99; /* Below nav drawer but overlaying standard contents */
  overflow: hidden; /* Guarantee zero side scroll overflow on mobile */
}

#intro-sticky-stage {
  position: relative; /* Changed from sticky to relative for GSAP ScrollTrigger pinning */
  width: 100%;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

#intro-canvas-container {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(circle at 50% 50%, rgba(3,5,11,0.5) 0%, #03050b 100%);
}

/* Cyber ambient grid */
.intro-grid-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image: 
    linear-gradient(rgba(0, 245, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 245, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  background-position: center center;
  mask-image: radial-gradient(circle, rgba(0,0,0,0.85) 30%, rgba(0,0,0,0) 80%);
  -webkit-mask-image: radial-gradient(circle, rgba(0,0,0,0.85) 30%, rgba(0,0,0,0) 80%);
  opacity: 0.6;
}

/* ─── HUD TELEMETRY OVERLAYS ─── */
.intro-hud-bottom-center {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 15;
  font-family: 'JetBrains Mono', monospace;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
  width: max-content;
  text-align: center;
}
.hud-item {
  font-size: 8px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.hud-item.cyan { color: var(--cyan); text-shadow: 0 0 8px rgba(0,245,255,0.4); }
.hud-item.gray { color: #475569; }
.hud-item.pulsing {
  color: var(--cyan);
  animation: hudBlink 1.8s ease-in-out infinite;
  display: flex;
  align-items: center;
  gap: 8px;
}
@keyframes hudBlink {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

/* ─── SLIDE LAYOUTS ─── */
.intro-slides {
  position: relative;
  width: 100%;
  height: 100%;
  z-index: 10;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: flex-start; /* Place slides on left side by default on desktop */
}

.intro-slide {
  position: absolute;
  width: calc(100% - 48px);
  left: 24px;
  max-width: 500px;
  opacity: 0;
  transform: translateY(40px);
  filter: blur(8px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), 
              filter 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
  text-align: left;
}

/* Active slide state */
.intro-slide.active {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
  pointer-events: auto;
}

.slide-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(0,245,255,0.2);
  background: rgba(0,245,255,0.06);
  color: var(--cyan);
  font-size: 9px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.intro-slide h2 {
  font-size: clamp(24px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 18px;
}
.intro-slide h2 span {
  text-shadow: 0 0 16px rgba(0,245,255,0.15);
}
.intro-slide p {
  font-size: 14px;
  line-height: 1.7;
  color: #94a3b8;
}

/* ─── GLOBAL HEADER STICKY & HIDE SYSTEM ─── */
#global-header {
  position: sticky !important;
  top: -36px !important; /* Offset hides the breaking news ticker but sticks the nav bar perfectly at top: 0! */
  z-index: 100 !important;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), background 0.3s;
}

#global-header.intro-hidden {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  transform: translateY(-100%) !important;
  z-index: 100 !important;
}

/* Ensure canvas doesn't leak horizontal scroll */
#intro-canvas-container canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  overflow: hidden;
}

/* ─── RESPONSIVE STYLES ─── */
@media (max-width: 900px) {
  .intro-slides {
    justify-content: center; /* Center slides on tablets/mobile */
    align-items: flex-end;
    padding-bottom: 60px;
  }
  .intro-slide {
    max-width: 580px;
    background: rgba(8, 8, 16, 0.82);
    border: 1px solid rgba(0, 245, 255, 0.1);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    padding: 24px;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
    transform: translateY(20px);
    margin-bottom: 40px;
  }
  .intro-slide h2 {
    font-size: 24px;
    margin-bottom: 12px;
  }
  .intro-slide p {
    font-size: 12px;
    line-height: 1.6;
  }
  .slide-badge {
    margin-bottom: 12px;
  }
  .intro-hud-bottom-center {
    bottom: 16px;
  }
}

@media (max-width: 480px) {
  .intro-slide {
    padding: 20px;
    margin-bottom: 30px;
  }
  .intro-slide h2 {
    font-size: 20px;
  }
}