/* ==========================================================
   RESET & BASE
   ========================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", sans-serif;
  color-scheme: dark;
}

html, body {
  height: 100%;
  overflow: hidden;
  color: #f3f4f6;
}

/* ==========================================================
   BACKGROUND FADER — Dual-Layer Crossfade
   ========================================================== */
#background-fader {
  position: fixed;
  inset: 0;
  z-index: -4;
  overflow: hidden;
  pointer-events: none;
}

/* Two alternating layers for smooth fade */
#background-fader .layer {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 2.5s ease-in-out;
  will-change: opacity, background-image;
}

#background-fader .layer.visible {
  opacity: 1;
  transition: opacity 2.5s ease-in-out; /* ensures same duration both directions */
}

/* Global edge fade overlay */
#background-fader::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
      circle at center,
      rgba(17, 24, 39, 0.15) 0%,
      rgba(17, 24, 39, 0.45) 60%,
      rgba(17, 24, 39, 0.9) 100%
    ),
    linear-gradient(to top, rgba(17,24,39,0.9) 0%, transparent 30%),
    linear-gradient(to bottom, rgba(17,24,39,0.9) 0%, transparent 30%),
    linear-gradient(to right, rgba(17,24,39,0.9) 0%, transparent 30%),
    linear-gradient(to left, rgba(17,24,39,0.9) 0%, transparent 30%);
  pointer-events: none;
  z-index: 1;
}

/* ==========================================================
   TOP FADED NAV — Fixed, non-overlapping, responsive
   ========================================================== */
.faded-nav {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(
    to bottom,
    rgba(17, 24, 39, 0.95) 0%,
    rgba(17, 24, 39, 0.6) 50%,
    rgba(17, 24, 39, 0.15) 100%
  );
  padding: 0.7rem 2rem;
  border-radius: 999px;
  backdrop-filter: blur(12px);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.45);
  z-index: 20;
  transition: background 0.4s ease, transform 0.3s ease;
}

.faded-nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.faded-nav a {
  text-decoration: none;
  color: #9ca3af;
  font-weight: 500;
  letter-spacing: 0.4px;
  transition: color 0.25s ease, transform 0.25s ease;
}

.faded-nav a:hover,
.faded-nav a.active {
  color: #fff;
  transform: scale(1.08);
}

/* ==========================================================
   HERO CENTER
   ========================================================== */
.hero-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  background: rgba(17, 24, 39, 0.55);
  backdrop-filter: blur(15px);
  border-radius: 18px;
  padding: 2rem 3rem;
  box-shadow: 0 0 35px rgba(0, 0, 0, 0.55);
  animation: fadeIn 1.8s ease;
  max-width: 90%;
  width: 450px;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translate(-50%, -45%); }
  to { opacity: 1; transform: translate(-50%, -50%); }
}

.hero-logo {
  width: 260px;
  height: auto;
  margin-bottom: 1.2rem;
  filter: drop-shadow(0 0 20px rgba(0, 0, 0, 0.4));
}

.hero-desc {
  color: #d1d5db;
  font-size: 1rem;
  letter-spacing: 0.3px;
  margin-bottom: 2rem;
}

/* ==========================================================
   SOCIAL ICONS
   ========================================================== */
.social-icons {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.social-icons img {
  width: 70px;
  height: 70px;
  opacity: 0.9;
  transition: opacity 0.3s, transform 0.6s ease-in-out;
  filter: drop-shadow(0 0 10px rgba(0, 0, 0, 0.5));
}

.social-icons img:hover {
  opacity: 1;
  transform: rotate(360deg) scale(1.15);
}

/* ==========================================================
   FOOTER
   ========================================================== */
footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  text-align: center;
  color: #cbd5e1;
  font-size: 0.9rem;
  background: linear-gradient(
    to top,
    rgba(17, 24, 39, 0.85) 0%,
    rgba(17, 24, 39, 0.45) 60%,
    rgba(17, 24, 39, 0.1) 100%
  );
  backdrop-filter: blur(10px);
  padding: 0.7rem 0.5rem;
  box-shadow: 0 -5px 15px rgba(0, 0, 0, 0.4);
  letter-spacing: 0.2px;
  z-index: 10;
}

/* ==========================================================
   TRENDING INFO OVERLAY — synced fade
   ========================================================== */
.trending-info {
  position: absolute;
  bottom: 70px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: #f9fafb;
  font-size: 1.05rem;
  font-weight: 600;
  background: rgba(17, 24, 39, 0.65);
  padding: 0.7rem 1.4rem;
  border-radius: 10px;
  backdrop-filter: blur(8px);
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity 0.8s ease-in-out;
  pointer-events: none;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.85);
  z-index: 5;
}

/* ==========================================================
   RESPONSIVE ADJUSTMENTS
   ========================================================== */
@media (max-width: 768px) {
  .hero-center {
    width: 85%;
    padding: 1.5rem 2rem;
    max-height: 80vh;
    overflow-y: auto;
  }

  .hero-logo {
    width: 200px;
  }

  .social-icons img {
    width: 55px;
    height: 55px;
  }

  .faded-nav ul {
    gap: 1rem;
  }

  .faded-nav a {
    font-size: 0.9rem;
  }

  .trending-info {
    font-size: 0.95rem;
    padding: 0.6rem 1.2rem;
  }
}

@media (max-width: 480px) {
  .hero-center {
    width: 90%;
    padding: 1rem 1.5rem;
    max-height: 75vh;
    overflow-y: auto;
  }

  .hero-logo {
    width: 160px;
  }

  .social-icons img {
    width: 45px;
    height: 45px;
  }

  .hero-desc {
    font-size: 0.9rem;
  }

  footer {
    font-size: 0.8rem;
  }
}