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

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --text-primary: #00ff00;
  --text-secondary: #00cc00;
  --text-muted: #008800;
  --border-color: #00ff00;
  --accent: #00ff00;
  --error: #ff0000;
}

body {
  font-family: 'Courier New', 'Courier', monospace;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow: hidden;
  text-shadow: 0 0 5px rgba(0, 255, 65, 0.5);
  position: relative;
}

/* Industrial Terminal CRT Effects */
body::before {
  content: " ";
  display: block;
  position: fixed;
  top: 0; left: 0; bottom: 0; right: 0;
  background: rgba(18, 16, 16, 0.1);
  opacity: 0;
  z-index: 9999;
  pointer-events: none;
  animation: flicker 0.15s infinite;
}

body::after {
  content: " ";
  display: block;
  position: fixed;
  top: 0; left: 0; bottom: 0; right: 0;
  background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.15) 50%), 
              linear-gradient(90deg, rgba(255, 0, 0, 0.03), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.03));
  z-index: 9998;
  background-size: 100% 2px, 3px 100%;
  pointer-events: none;
}

@keyframes flicker {
  0% { opacity: 0.27861; }
  5% { opacity: 0.34769; }
  10% { opacity: 0.23604; }
  15% { opacity: 0.90626; }
  20% { opacity: 0.18128; }
  30% { opacity: 0.48138; }
  40% { opacity: 0.03461; }
  50% { opacity: 0.65525; }
  60% { opacity: 0.35413; }
  70% { opacity: 0.19807; }
  80% { opacity: 0.48771; }
  90% { opacity: 0.13301; }
  100% { opacity: 0.42522; }
}

.glitch-jump {
  animation: glitch-skew 4s infinite linear alternate-reverse;
}

@keyframes glitch-skew {
  0% { transform: skew(0deg); }
  20% { transform: skew(-0.5deg); }
  21% { transform: skew(2deg); }
  22% { transform: skew(0deg); }
  100% { transform: skew(0deg); }
}

#app {
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Auth Screen */
#auth-screen {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100vh;
  padding: 20px;
  text-align: center;
}

.logo pre {
  color: var(--text-primary);
  font-size: 0.8em;
  line-height: 1.2;
  margin-bottom: 20px;
}

#auth-screen h1 {
  font-size: 2.5em;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.tagline {
  color: var(--text-muted);
  margin-bottom: 40px;
  font-size: 0.9em;
}

.auth-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 30px;
  max-width: 320px;
  margin-left: auto;
  margin-right: auto;
}

.auth-btn {
  font-family: 'Courier New', 'Courier', monospace;
  font-size: 1em;
  cursor: pointer;
  border: 2px solid var(--text-primary);
  padding: 14px 24px;
  transition: all 0.2s;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-primary);
  color: var(--text-primary);
}

.auth-btn:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
}

.github-btn,
.guest-btn {
  background: var(--bg-primary);
  color: var(--text-primary);
  border-color: var(--text-primary);
}

.github-btn:hover,
.guest-btn:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
}

.guest-btn {
  border-style: dashed;
  opacity: 0.8;
}

.guest-btn:hover {
  opacity: 1;
}

/* Hide other OAuth providers for now */
.google-btn,
.microsoft-btn,
.apple-btn {
  display: none;
}

.info {
  margin-top: 40px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85em;
  max-width: 400px;
}

.info p {
  margin: 5px 0;
}

/* Buttons */
button {
  font-family: 'Courier New', 'Courier', monospace;
  font-size: 1em;
  cursor: pointer;
  border: 2px solid var(--border-color);
  padding: 12px 24px;
  transition: all 0.2s;
}

.primary-btn {
  background: var(--bg-primary);
  color: var(--text-primary);
  border-color: var(--text-primary);
}

.primary-btn:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
}

.secondary-btn {
  background: var(--bg-secondary);
  color: var(--text-muted);
  border-color: var(--text-muted);
}

.secondary-btn:hover {
  background: var(--bg-tertiary);
}

.icon {
  margin-right: 8px;
}

/* Chat Screen */
#chat-screen {
  height: 100vh;
  display: flex;
  flex-direction: column;
}

#header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  border-bottom: 2px solid var(--border-color);
  background: var(--bg-secondary);
}

.header-left h2 {
  font-size: 1.2em;
  display: inline;
  margin-right: 20px;
}

#user-info {
  color: var(--text-muted);
  font-size: 0.9em;
}

/* Room Input Screen */
#room-input-screen {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.room-input-container {
  text-align: center;
  max-width: 400px;
  width: 100%;
  padding: 20px;
}

.room-input-container h3 {
  margin-bottom: 20px;
  font-size: 1.5em;
}

#room-name {
  width: 100%;
  margin-bottom: 15px;
}

.hint {
  margin-top: 15px;
  color: var(--text-muted);
  font-size: 0.85em;
}

/* Chat Container */
#chat-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#room-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 15px;
  background: #1a1a1a;
  border-bottom: 1px solid #00ff00;
  gap: 15px;
}

.room-controls {
  display: flex;
  gap: 8px;
  align-items: center;
}

#switch-room-name {
  background: #000;
  border: 1px solid #00ff00;
  color: #00ff00;
  padding: 6px 10px;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  width: 150px;
}

#switch-room-name:focus {
  outline: none;
  border-color: #00ff00;
  box-shadow: 0 0 5px rgba(0, 255, 0, 0.3);
}

#current-room {
  font-weight: bold;
  color: var(--text-primary);
}

#peer-count {
  color: var(--text-muted);
  margin-left: 20px;
}

#chat-main {
  flex: 1;
  display: grid;
  grid-template-columns: 200px 1fr;
  overflow: hidden;
  position: relative;
}

/* Overlay should not affect grid layout */
.menu-overlay {
  display: none;
}

/* User List */
#user-list {
  border-right: 2px solid var(--border-color);
  background: var(--bg-secondary);
  display: flex;
  flex-direction: column;
}

.user-list-header {
  padding: 10px;
  border-bottom: 2px solid var(--border-color);
  font-weight: bold;
  text-transform: uppercase;
  font-size: 0.9em;
}

#user-list-content {
  flex: 1;
  overflow-y: auto;
  padding: 10px;
}

.user-item {
  padding: 5px;
  margin: 2px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-avatar {
  width: 20px;
  height: 20px;
  border-radius: 2px;
  border: 1px solid var(--border-color);
}

.user-name {
  font-size: 0.9em;
}

.user-name.self {
  color: var(--accent);
  font-weight: bold;
}

.user-name.aliased {
  text-decoration: underline;
  text-decoration-style: dotted;
  font-style: italic;
  cursor: help;
}

/* Messages */
#messages-container {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#messages {
  flex: 1;
  overflow-y: auto;
  padding: 15px;
  background: var(--bg-primary);
}

.message {
  margin: 8px 0;
  display: flex;
  gap: 10px;
  font-size: 0.95em;
}

.message-time {
  color: var(--text-muted);
  font-size: 0.85em;
  min-width: 50px;
}

.message-author {
  color: var(--text-secondary);
  font-weight: bold;
  min-width: 120px;
}

.message-author.self {
  color: var(--accent);
}

.message-text {
  color: var(--text-primary);
  word-wrap: break-word;
  flex: 1;
}

.system-message {
  color: var(--text-muted);
  font-style: italic;
  margin: 5px 0;
  text-align: center;
}

.emote-message {
  display: flex;
  gap: 10px;
  margin: 5px 0;
}

.emote-text {
  color: #ff6b6b;
  font-style: italic;
}

.pm-message {
  display: flex;
  gap: 10px;
  margin: 5px 0;
  background: rgba(255, 165, 0, 0.1);
  padding: 5px 10px;
  border-left: 3px solid #ffa500;
}

.pm-prefix {
  color: #ffa500;
  font-weight: bold;
}

.pm-text {
  color: var(--text-primary);
}

/* Input Area */
#input-area {
  display: flex;
  gap: 10px;
  padding: 15px;
  border-top: 2px solid var(--border-color);
  background: var(--bg-secondary);
}

input[type="text"] {
  flex: 1;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  padding: 10px;
  font-family: 'Courier New', 'Courier', monospace;
  font-size: 1em;
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
}

input[type="text"]::placeholder {
  color: var(--text-muted);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* Hamburger Menu Button */
.menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.5em;
  padding: 5px 10px;
  cursor: pointer;
  margin-right: 10px;
}

.menu-btn:hover {
  color: var(--accent);
}

/* Responsive */
@media (max-width: 768px) {
  .menu-btn {
    display: inline-block;
  }
  
  #chat-main {
    grid-template-columns: 1fr;
    position: relative;
  }
  
  #user-list {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 200px;
    height: 100%;
    z-index: 100;
    border-right: 2px solid var(--border-color);
    background: var(--bg-secondary);
  }
  
  #user-list.show {
    display: flex;
  }
  
  /* Overlay when menu is open (mobile only) */
  .menu-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
  }
  
  .menu-overlay.show {
    display: block;
  }
  
  #auth-screen h1 {
    font-size: 1.8em;
  }
  
  .logo pre {
    font-size: 0.6em;
  }
  
  .header-left h2 {
    font-size: 1em;
    margin-right: 10px;
  }
  
  #user-info {
    display: block;
    font-size: 0.8em;
  }
}

/* Push Notification Banner */
#push-banner {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  padding: 15px 20px;
  z-index: 1000;
  max-width: 90%;
  width: 400px;
}

.push-banner-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: center;
}

.push-banner-buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.push-banner-buttons button {
  padding: 8px 16px;
  font-size: 0.9em;
}

.push-message {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  padding: 12px 20px;
  z-index: 1000;
  animation: fadeInOut 3s ease-in-out;
}

@keyframes fadeInOut {
  0% { opacity: 0; }
  15% { opacity: 1; }
  85% { opacity: 1; }
  100% { opacity: 0; }
}

/* Capacity Error Takeover Screen */
#capacity-error-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.capacity-error-container {
  text-align: center;
  max-width: 500px;
  padding: 40px;
  border: 2px solid var(--error);
  background: var(--bg-secondary);
  animation: pulse-border 2s infinite;
}

@keyframes pulse-border {
  0%, 100% { border-color: var(--error); box-shadow: 0 0 20px rgba(255, 0, 0, 0.3); }
  50% { border-color: #ff6600; box-shadow: 0 0 30px rgba(255, 102, 0, 0.4); }
}

.capacity-icon {
  font-size: 4em;
  color: var(--error);
  margin-bottom: 20px;
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.capacity-title {
  font-size: 2em;
  color: var(--error);
  margin-bottom: 15px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.capacity-message {
  color: var(--text-primary);
  margin-bottom: 20px;
  font-size: 1.1em;
}

.capacity-stats {
  background: var(--bg-primary);
  padding: 15px;
  margin: 20px 0;
  border: 1px solid var(--text-muted);
  font-family: 'Courier New', monospace;
}

#capacity-count {
  font-size: 1.5em;
  color: var(--error);
}

.capacity-hint {
  color: var(--text-muted);
  font-size: 0.9em;
  margin-bottom: 30px;
}

#capacity-error-screen .auth-btn {
  margin: 10px auto;
  max-width: 200px;
  justify-content: center;
}

#capacity-error-screen .secondary-btn {
  margin: 10px auto;
  display: block;
}