:root {
  /* Colors */
  --wf-bg: #09090b;
  --wf-bg-subtle: #18181b;
  --wf-bg-hover: #27272a;
  --wf-bg-active: #3f3f46;
  
  --wf-border: #27272a;
  --wf-border-hover: #3f3f46;
  
  --wf-fg: #fafafa;
  --wf-fg-muted: #a1a1aa;
  --wf-fg-subtle: #71717a;
  
  --wf-accent: #6366f1; /* Indigo */
  --wf-accent-glow: rgba(99, 102, 241, 0.3);
  --wf-accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  
  --wf-danger: #ef4444;
  --wf-success: #22c55e;
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  
  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* Font */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background-color: var(--wf-bg);
  color: var(--wf-fg);
  font-family: var(--font-sans);
  height: 100vh;
  overflow: hidden; /* App-like feel */
}

/* App Layout */
.app-container {
  display: grid;
  grid-template-columns: 72px 240px 1fr 240px;
  height: 100vh;
  width: 100vw;
}

/* 1. Server Rail (Far Left) */
.server-rail {
  background-color: #000000; /* Darkest */
  border-right: 1px solid var(--wf-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-md) 0;
  gap: var(--space-sm);
  overflow-y: auto;
}

.server-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--wf-bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  color: var(--wf-fg);
}

.server-icon:hover, .server-icon.active {
  border-radius: 16px; /* Squircle effect */
  background-color: var(--wf-accent);
  color: white;
}

.server-icon.active::before {
  content: '';
  position: absolute;
  left: -18px;
  width: 8px;
  height: 40px;
  background-color: white;
  border-radius: 0 4px 4px 0;
}

.server-divider {
  width: 32px;
  height: 2px;
  background-color: var(--wf-border);
  margin: 4px 0;
}

/* 2. Channel Sidebar */
.channel-sidebar {
  background-color: var(--wf-bg-subtle);
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  height: 48px;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--wf-border);
  font-weight: 700;
  font-size: 15px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.channel-list {
  flex: 1;
  padding: var(--space-sm);
  overflow-y: auto;
}

.channel-category {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--wf-fg-subtle);
  font-weight: 700;
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
  padding-left: var(--space-sm);
}
.channel-category:first-child { margin-top: var(--space-sm); }

.channel-item {
  display: flex;
  align-items: center;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  color: var(--wf-fg-muted);
  cursor: pointer;
  margin-bottom: 2px;
  font-size: 15px;
}

.channel-item:hover {
  background-color: var(--wf-bg-hover);
  color: var(--wf-fg);
}

.channel-item.active {
  background-color: var(--wf-bg-active);
  color: var(--wf-fg);
}

.channel-icon {
  margin-right: 8px;
  color: var(--wf-fg-subtle);
}

.user-controls {
  background-color: #131316;
  padding: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* 3. Main Chat Area */
.chat-main {
  background-color: var(--wf-bg);
  display: flex;
  flex-direction: column;
  min-width: 0; /* Prevent flex overflow */
}

.chat-header {
  height: 48px;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--wf-border);
  justify-content: space-between;
}

.header-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: 16px;
}

.header-topic {
  font-weight: 400;
  color: var(--wf-fg-muted);
  font-size: 14px;
  margin-left: var(--space-sm);
  border-left: 1px solid var(--wf-border);
  padding-left: var(--space-sm);
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg); /* Groups of messages */
}

.message-group {
  display: flex;
  gap: var(--space-md);
}

.message-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--wf-bg-active);
  flex-shrink: 0;
  background-size: cover;
}

.message-content {
  flex: 1;
  min-width: 0;
}

.message-meta {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin-bottom: 4px;
}

.message-author {
  font-weight: 600;
  color: var(--wf-fg);
}
.message-author:hover { text-decoration: underline; cursor: pointer; }

.message-time {
  font-size: 12px;
  color: var(--wf-fg-subtle);
}

.message-text {
  color: var(--wf-fg-muted);
  line-height: 1.5;
  font-size: 15px;
}

.chat-input-area {
  padding: 0 var(--space-md) var(--space-lg) var(--space-md);
  background-color: var(--wf-bg);
}

.input-wrapper {
  background-color: var(--wf-bg-subtle);
  border-radius: var(--radius-md);
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  min-height: 44px;
}

.chat-input {
  background: transparent;
  border: none;
  color: var(--wf-fg);
  flex: 1;
  padding: 12px 0;
  font-size: 15px;
  outline: none;
}

.input-icons {
  display: flex;
  gap: var(--space-md);
  color: var(--wf-fg-subtle);
}

/* 4. Members Sidebar */
.members-sidebar {
  background-color: var(--wf-bg-subtle);
  border-left: 1px solid var(--wf-border);
  padding: var(--space-md);
  overflow-y: auto;
}

.member-category {
  font-size: 12px;
  text-transform: uppercase;
  color: var(--wf-fg-subtle);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  margin-top: var(--space-lg);
}
.member-category:first-child { margin-top: 0; }

.member-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  opacity: 0.8;
}

.member-item:hover {
  background-color: var(--wf-bg-hover);
  opacity: 1;
}

.member-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--wf-bg-active);
  position: relative;
}

.status-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--wf-bg-subtle);
  position: absolute;
  bottom: -2px;
  right: -2px;
}
.status-online { background-color: var(--wf-success); }
.status-idle { background-color: #eab308; }
.status-dnd { background-color: var(--wf-danger); }

.member-name {
  font-weight: 500;
  font-size: 14px;
  color: var(--wf-fg);
}

.member-status-text {
  font-size: 12px;
  color: var(--wf-fg-subtle);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
  background-color: #2b2b2b;
} 
::-webkit-scrollbar-thumb {
  background-color: #1a1a1a;
  border-radius: 4px;
}
::-webkit-scrollbar-track {
  background-color: #2b2b2b;
}

/* Auth Pages */
.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background-color: var(--wf-bg);
  padding: var(--space-md);
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background-color: var(--wf-bg-subtle);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  border: 1px solid var(--wf-border);
}

.auth-title {
  font-size: 24px;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-sm);
  color: var(--wf-fg);
}

.auth-subtitle {
  text-align: center;
  color: var(--wf-fg-subtle);
  margin-bottom: var(--space-xl);
  font-size: 14px;
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--wf-fg-subtle);
  margin-bottom: var(--space-xs);
}

.form-input {
  width: 100%;
  padding: 10px;
  background-color: var(--wf-bg);
  border: 1px solid var(--wf-border);
  border-radius: var(--radius-sm);
  color: var(--wf-fg);
  font-size: 16px;
  transition: border-color 0.2s;
}
.form-input:focus {
  outline: none;
  border-color: var(--wf-accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--wf-accent);
  color: white;
}
.btn-primary:hover {
  background-color: #4f46e5;
}

.btn-full {
  width: 100%;
}

.link {
  color: var(--wf-accent);
  text-decoration: none;
  font-size: 14px;
}
.link:hover { text-decoration: underline; }

/* Friends View */
.friends-header {
  display: flex;
  align-items: center;
  height: 48px;
  padding: 0 var(--space-md);
  border-bottom: 1px solid var(--wf-border);
  gap: var(--space-md);
}

.friend-tab {
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
  color: var(--wf-fg-subtle);
  font-size: 14px;
}
.friend-tab:hover {
  background-color: var(--wf-bg-hover);
  color: var(--wf-fg);
}
.friend-tab.active {
  background-color: var(--wf-bg-active); /* Or distinct active color */
  color: var(--wf-fg);
}

.friends-list-container {
  padding: var(--space-lg);
  flex: 1;
  overflow-y: auto;
}

.friends-section-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--wf-fg-subtle);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.friend-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px;
  border-top: 1px solid var(--wf-border);
  cursor: pointer;
}
.friend-row:hover {
  background-color: var(--wf-bg-subtle);
  border-radius: 8px;
  border-color: transparent;
}

.friend-info {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.friend-actions {
  display: flex;
  gap: var(--space-sm);
}

.action-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--wf-bg-active);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--wf-fg-subtle);
  cursor: pointer;
}
.action-btn:hover {
  color: var(--wf-fg);
  background-color: var(--wf-bg-hover);
}

/* Utilities */
.badge {
  background-color: var(--wf-danger);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 0 4px;
  border-radius: 4px;
  min-width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-placeholder {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 1024px) {
  .app-container {
    grid-template-columns: 72px 240px 1fr 0; /* Hide members on tablet */
  }
  .members-sidebar {
    display: none;
  }
}

@media (max-width: 768px) {
  .app-container {
    grid-template-columns: 0 0 1fr 0; /* Mobile view - just chat */
    display: flex;
    flex-direction: column;
  }
  .server-rail, .channel-sidebar, .members-sidebar {
    display: none;
  }
  
  /* Mobile Header */
  .chat-header {
    background: var(--wf-bg-subtle);
  }
}