/* ==========================================================================
   Nova Games - High Converting Landing Page Styles
   Full-Bleed Adaptive Mobile Resolution System
   ========================================================================== */

:root {
  --bg-dark: #22080a;
  --real-vh: 100vh;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
}

html, body {
  width: 100%;
  height: 100%;
  height: var(--real-vh, 100dvh);
  background-color: var(--bg-dark);
  color: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow: hidden;
  position: fixed;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
}

/* App Container - Centers content on ultra-wide screens */
.app-container {
  width: 100vw;
  height: 100%;
  height: var(--real-vh, 100dvh);
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
  background-color: var(--bg-dark);
}

/* 
   Video Stage:
   Dynamically controlled by Resolution Adapter in main.js.
   Always fills 100% of height (zero top/bottom gaps).
*/
.video-stage {
  position: relative;
  width: 100vw;
  height: 100%;
  height: var(--real-vh, 100dvh);
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--bg-dark);
  overflow: hidden;
}

/* Background Landing Video - Edge-to-edge full fill */
.landing-video {
  width: 100%;
  height: 100%;
  object-fit: fill;
  display: block;
}

/* --------------------------------------------------------------------------
   Golden Action Button (Interactive Overlay)
   Micro-aligned to the video's gold button coordinates
   -------------------------------------------------------------------------- */
.gold-btn-hotspot {
  position: absolute;
  display: block;
  text-decoration: none;
  border-radius: 9999px;
  cursor: pointer;
  z-index: 20;
  touch-action: manipulation;
  outline: none;
  
  /* Soft ambient golden breathing glow (no harsh misaligned borders) */
  animation: gold-ambient 2.4s infinite ease-in-out;
  transition: transform 0.1s ease, filter 0.15s ease;
}

/* Chinese Video (IMG_6924.MP4) Precise Button Coordinates */
.cn-button {
  top: 74.5%;
  left: 15.0%;
  width: 70.0%;
  height: 7.8%;
}

/* English Video (IMG_6925.MP4) Precise Button Coordinates */
.en-button {
  top: 73.0%;
  left: 15.0%;
  width: 70.0%;
  height: 7.8%;
}

/* Active Tap / Click tactile depression effect */
.gold-btn-hotspot:active {
  transform: scale(0.97);
  filter: brightness(1.1);
}

/* Subtle, perfectly bounded golden breathing aura */
@keyframes gold-ambient {
  0% {
    box-shadow: 0 0 12px rgba(255, 215, 0, 0.25),
                inset 0 0 8px rgba(255, 235, 120, 0.2);
  }
  50% {
    box-shadow: 0 0 24px rgba(255, 215, 0, 0.55),
                inset 0 0 14px rgba(255, 245, 150, 0.35);
  }
  100% {
    box-shadow: 0 0 12px rgba(255, 215, 0, 0.25),
                inset 0 0 8px rgba(255, 235, 120, 0.2);
  }
}

/* Elegant light sheen sweeping across the button */
.btn-shimmer {
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-20deg);
  border-radius: 9999px;
  pointer-events: none;
  animation: shimmer-sweep 3.2s infinite ease-in-out;
}

@keyframes shimmer-sweep {
  0%, 40% {
    left: -100%;
  }
  70%, 100% {
    left: 150%;
  }
}