:root {
  --primary: #ff0000;
  --secondary: #aa0000;
  --dark: #0a0a0a;
  --light: #f0f0f0;
  --card-bg: rgba(20, 20, 20, 0.8);
}

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

body {
  background-color: var(--dark);
  color: white;
  font-family: 'Courier New', monospace;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background: linear-gradient(135deg, #000 0%, var(--dark) 100%);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 2px solid var(--primary);
}

.logo {
  display: flex;
  align-items: center;
  gap: 15px;
}

.logo img {
  width: 60px;
  filter: drop-shadow(0 0 10px var(--primary));
}

.logo h1 {
  color: var(--primary);
  text-shadow: 0 0 10px rgba(255, 0, 0, 0.7);
}

/* Navigation */
nav ul {
  display: flex;
  list-style: none;
  gap: 20px;
}

nav a {
  color: white;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 4px;
  transition: all 0.3s;
}

nav a:hover, nav a.active {
  background: rgba(255, 0, 0, 0.2);
  color: var(--primary);
}

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid rgba(255, 0, 0, 0.2);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}

.card:hover {
  border-color: var(--primary);
  box-shadow: 0 6px 15px rgba(255, 0, 0, 0.3);
}

/* Forms */
.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  color: var(--primary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--secondary);
  color: white;
  border-radius: 4px;
}

.btn {
  background: var(--primary);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: bold;
  transition: opacity 0.3s;
}

.btn:hover {
  opacity: 0.9;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--primary);
}

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

/* Avatar */
.avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary);
  margin: 0 auto 15px;
}

/* Media */
.media-preview {
  max-width: 100%;
  margin: 10px 0;
}

/* Chat */
.chat-container {
  display: flex;
  height: 70vh;
}

.chat-users {
  width: 30%;
  overflow-y: auto;
  border-right: 1px solid var(--secondary);
}

.chat-messages {
  width: 70%;
  padding: 20px;
  overflow-y: auto;
}

.message {
  margin-bottom: 15px;
  padding: 10px;
  background: rgba(50, 50, 50, 0.5);
  border-radius: 8px;
}

/* Responsive */
@media (max-width: 768px) {
  .grid {
    grid-template-columns: 1fr;
  }
  
  .chat-container {
    flex-direction: column;
    height: auto;
  }
  
  .chat-users, .chat-messages {
    width: 100%;
  }
}