/* ==========================
   De Yuwa — Dark Premium Edition
   ========================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Helvetica Neue", Arial, sans-serif;
}

body {
  background-color: #0A0A0A;
  color: #E5E5E5;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* === Background Logo Watermark (large & constant) === */
body::before {
  content: "";
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1200px;
  height: 1200px;
  background: url("logo.png") center center no-repeat;
  background-size: contain;
  opacity: 0.08;
  filter: blur(4px);
  z-index: -1;
  pointer-events: none;
}

/* === Smooth Fade Animations === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  animation: fadeInUp 1.2s ease forwards;
}

/* === Header === */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 6%;
  background: rgba(10, 10, 10, 0.9);
  border-bottom: 1px solid rgba(255, 215, 0, 0.2);
  position: sticky;
  top: 0;
  z-index: 1000;
}

header img {
  height: 50px;
}

nav a {
  text-decoration: none;
  color: #E5E5E5;
  font-weight: 600;
  margin-left: 25px;
  transition: color 0.3s ease, border-bottom 0.3s ease;
  padding-bottom: 3px;
}

nav a:hover {
  color: #D4AF37; /* gold tone */
  border-bottom: 2px solid #D4AF37;
}

/* === Hero Section === */
.hero {
  text-align: center;
  padding: 130px 20px;
  background: linear-gradient(180deg, #0A0A0A 0%, #111 100%);
  animation: fadeInUp 1.5s ease forwards;
}

.hero h1 {
  font-size: 46px;
  color: #F5C542;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.hero p {
  font-size: 18px;
  color: #CCC;
  max-width: 700px;
  margin: 0 auto;
}

/* === Section === */
.section {
  padding: 90px 10%;
  text-align: center;
  background: transparent;
  transition: background 0.6s ease;
}

.section h2 {
  font-size: 30px;
  color: #F5C542;
  margin-bottom: 20px;
  position: relative;
}

.section h2::after {
  content: "";
  display: block;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, #D4AF37, #8B0000);
  margin: 12px auto;
  border-radius: 2px;
}

.section p {
  font-size: 17px;
  color: #DDD;
  max-width: 820px;
  margin: 0 auto;
  opacity: 0.95;
}

/* === Contact Section === */
.contact {
  background: #111;
  padding: 70px 10%;
  text-align: center;
  border-top: 1px solid rgba(255, 215, 0, 0.1);
}

.contact h2 {
  color: #F5C542;
}

.contact-info {
  margin-top: 25px;
  font-size: 17px;
  line-height: 1.8;
}

.contact a {
  color: #D4AF37;
  text-decoration: none;
  transition: opacity 0.3s ease;
}

.contact a:hover {
  opacity: 0.8;
}

/* === Footer === */
footer {
  background: #0A0A0A;
  color: #A47E3C;
  text-align: center;
  padding: 22px 10px;
  font-size: 15px;
  letter-spacing: 0.5px;
  border-top: 1px solid rgba(255, 215, 0, 0.15);
}

/* === Scroll Animation === */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s ease, transform 1s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* === Responsive === */
@media (max-width: 768px) {
  body::before {
    width: 700px;
    height: 700px;
    opacity: 0.06;
  }

  .hero h1 {
    font-size: 34px;
  }

  nav a {
    margin-left: 15px;
    font-size: 14px;
  }

  .section {
    padding: 60px 6%;
  }
}