body {
  margin: 0;
  font-family: 'Arial', sans-serif;
  color: #fff;
  background: url('assets/bg.jpg') no-repeat center center fixed, linear-gradient(to bottom right, #0f9b0f, #00ff95);
  background-size: cover;
}

.main-header {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.6);
  padding: 20px;
  gap: 20px;
}
.main-header .logo {
  height: 80px;
}
.main-title {
  font-size: 3em;
  background: linear-gradient(to right, #00ffcc, #00c4ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 2px 2px 5px rgba(0,0,0,0.5);
}

/* Sidebar */
.menu-btn {
  position: fixed;
  top: 20px;
  right: 20px;
  background: #00c4ff;
  border: none;
  border-radius: 5px;
  padding: 10px 15px;
  cursor: pointer;
  font-weight: bold;
  z-index: 1001;
}
.sidebar {
  height: 100%;
  width: 0;
  position: fixed;
  top: 0;
  right: 0;
  background-color: rgba(0,0,0,0.9);
  overflow-x: hidden;
  transition: 0.3s;
  padding-top: 60px;
  z-index: 1000;
}
.sidebar a {
  padding: 10px 20px;
  text-decoration: none;
  font-size: 18px;
  color: #00c4ff;
  display: block;
  transition: 0.2s;
}
.sidebar a:hover {
  background: #00c4ff;
  color: #000;
}
.closebtn {
  position: absolute;
  top: 20px;
  right: 25px;
  font-size: 30px;
  color: #fff;
  cursor: pointer;
}

.content {
  padding: 20px;
  background: rgba(0,0,0,0.6);
}
h2 {
  border-bottom: 2px solid #00c4ff;
  padding-bottom: 5px;
}
.aturan-container {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: flex-start;
}
.aturan-img {
  max-width: 300px;
  border-radius: 10px;
}
.aturan-text {
  flex: 1;
  text-align: justify;
}
.video-card {
  background: rgba(255,255,255,0.1);
  padding: 15px;
  border-radius: 10px;
  margin: 20px 0;
}
.video-card h3 {
  margin-top: 0;
}
.video-card video {
  width: 100%;
  border-radius: 10px;
}

footer {
  background: rgba(0,0,0,0.7);
  text-align: center;
  padding: 10px;
  margin-top: 20px;
}

.auth-body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background: linear-gradient(to bottom right, #0f9b0f, #00c4ff);
}
.auth-container {
  background: rgba(0,0,0,0.8);
  padding: 30px;
  border-radius: 15px;
  text-align: center;
  width: 300px;
}
.auth-container .app-title {
  font-size: 2em;
  margin-bottom: 20px;
  background: linear-gradient(to right, #00ffcc, #00c4ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.tabs {
  display: flex;
  margin-bottom: 15px;
}
.tab-btn {
  flex: 1;
  padding: 10px;
  cursor: pointer;
  border: none;
  background: #333;
  color: #fff;
}
.tab-btn.active {
  background: #00c4ff;
  color: #000;
}
.tab-content {
  display: none;
}
.tab-content.active {
  display: block;
}
.auth-container input {
  width: 90%;
  padding: 8px;
  margin: 10px 0;
  border-radius: 5px;
  border: none;
}
.auth-container button {
  width: 100%;
  padding: 10px;
  margin-top: 10px;
  background: #00c4ff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-weight: bold;
}