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

body {
  font-family: 'Poppins', sans-serif;
  color: #fff;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Wallpaper Kustom dengan CSS (simulasi gambar orang main badminton) */
.bg-wallpaper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  background: linear-gradient(135deg, #ffd700 0%, #fdb931 30%, #f5a623 60%, #e69d00 100%);
  background-size: cover;
}

.bg-wallpaper::before {
  content: "🏸🏸🏸";
  position: absolute;
  top: 10%;
  left: 10%;
  font-size: 60px;
  opacity: 0.3;
  transform: rotate(-15deg);
}

.bg-wallpaper::after {
  content: "🏸🏸🏸🏸";
  position: absolute;
  bottom: 10%;
  right: 10%;
  font-size: 50px;
  opacity: 0.25;
  transform: rotate(20deg);
}

.bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
}

/* Navigasi */
.navbar {
  position: sticky;
  top: 0;
  background: rgba(255, 215, 0, 0.9);
  box-shadow: 0 2px 10px rgba(0,0,0,0.5);
  z-index: 100;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.5rem;
  color: #1a1a1a;
}

.logo-icon {
  background: #ffe600;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: #1a1a1a;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 20px;
}

.nav-menu a {
  text-decoration: none;
  color: #1a1a1a;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 15px;
  transition: all 0.3s;
}

.nav-menu a:hover, .nav-menu a.active {
  background: #1a1a1a;
  color: #ffd700;
}

/* Hero */
.hero {
  text-align: center;
  padding: 80px 20px 100px;
}

.hero-content h1 {
  font-size: 2.8rem;
  margin-bottom: 20px;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-content p {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto 30px;
  line-height: 1.6;
}

.btn-primary {
  background: #ffd700;
  color: #1a1a1a;
  padding: 12px 30px;
  text-decoration: none;
  font-weight: 800;
  border-radius: 30px;
  display: inline-block;
  transition: transform 0.3s;
  box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

.btn-primary:hover {
  transform: scale(1.05);
}

/* Section umum */
.content-section {
  max-width: 1200px;
  margin: 40px auto;
  padding: 20px;
}

.content-section h2 {
  font-size: 2rem;
  margin-bottom: 20px;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
  border-left: 5px solid #ffd700;
  padding-left: 15px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

/* Kartu */
.card {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(5px);
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
  border: 1px solid rgba(255,215,0,0.3);
  transition: transform 0.3s;
}

.card:hover {
  transform: translateY(-5px);
}

.card h3 {
  color: #ffd700;
  margin-bottom: 10px;
}

.card p {
  line-height: 1.6;
}

.date {
  color: #ffe68a;
  font-style: italic;
  margin-bottom: 10px;
}

/* Form */
.contact-form form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.contact-form input, .contact-form textarea {
  padding: 12px;
  border: 2px solid #ffd700;
  border-radius: 8px;
  background: rgba(0,0,0,0.3);
  color: #fff;
  font-family: 'Poppins', sans-serif;
}

.contact-form input::placeholder, .contact-form textarea::placeholder {
  color: #ddd;
}

.btn-secondary {
  background: #ffd700;
  color: #1a1a1a;
  padding: 10px 25px;
  border: none;
  border-radius: 30px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.3s;
}

.btn-secondary:hover {
  background: #ffe600;
}

.form-feedback {
  color: #7CFC00;
  text-align: center;
  margin-top: 5px;
  min-height: 20px;
}

/* Footer */
.footer {
  text-align: center;
  padding: 20px;
  background: rgba(0,0,0,0.5);
  margin-top: 40px;
}

/* Responsif */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(255,215,0,0.95);
    padding: 20px;
    gap: 10px;
    box-shadow: 0 5px 10px rgba(0,0,0,0.3);
  }

  .nav-menu.show {
    display: flex;
  }

  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }

  .hero-content h1 {
    font-size: 2rem;
  }
}