:root {
  --primary: #ff00aa;
  --secondary: #00ffff;
  --accent: #ff6600;
  --text: #ccffdd;
  --dim: #66aa99;
  --bg: #0a000f;
  --darker: #050008;
  --warning: #ff3366;
}

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

body {
  font-family: 'Roboto', monospace;
  background: var(--bg);
  color: var(--text);
  line-height: 1.4;
  padding: 12px;
  overflow: hidden;
  image-rendering: pixelated;
  min-height: 100vh;
  touch-action: manipulation;
}

/* CRT Effects */
body::before, .scanline, body::after {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 9999;
}

body::before {
  background: repeating-linear-gradient(to bottom, transparent 0px, transparent 2px, rgba(255,255,255,0.025) 2px, rgba(255,255,255,0.025) 4px);
  animation: scan 5s linear infinite;
}

.scanline {
  background: linear-gradient(to bottom, transparent 50%, rgba(0, 255, 255, 0.08) 50%);
  background-size: 100% 6px;
  animation: scan 6s linear infinite;
  opacity: 0.55;
  z-index: 10000;
}

body::after {
  background: rgba(255,0,170,0.02);
  animation: flicker 0.18s infinite alternate;
  z-index: 9998;
}

@keyframes scan { 0% { transform: translateY(-100%); } 100% { transform: translateY(100%); } }
@keyframes flicker { 0% { opacity: 0.015; } 100% { opacity: 0.035; } }

.header {
  text-align: center;
  margin-bottom: 18px;
  border-bottom: 2px solid var(--primary);
  padding-bottom: 12px;
}

h1 {
  font-size: 2.1rem;
  letter-spacing: 7px;
  text-shadow: 0 0 10px var(--primary), 0 0 25px var(--primary);
  color: #fff;
}

.subheader {
  font-size: 0.88rem;
  color: var(--secondary);
  letter-spacing: 4px;
  text-shadow: 0 0 8px var(--secondary);
}

.user-info {
  text-align: right;
  font-size: 0.92rem;
  margin-bottom: 16px;
  color: var(--accent);
  padding: 0 8px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.user-info strong {
  color: #ff99ff;
}

.logout-btn {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  padding: 4px 12px;
  font-size: 0.82rem;
  cursor: pointer;
  transition: all 0.2s;
}

.logout-btn:hover {
  background: var(--primary);
  color: #000;
  box-shadow: 0 0 10px var(--primary);
}

/* Board */
.board {
  max-width: 860px;
  margin: 0 auto;
  background: var(--darker);
  border: 3px solid var(--primary);
  box-shadow: 0 0 30px rgba(255, 0, 170, 0.4);
  position: relative;
  overflow: hidden;
}

/* Topic List */
.topic-list {
  padding: 12px 18px;
  max-height: calc(100vh - 220px);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--primary) #050008;
}

.topic-list::-webkit-scrollbar { width: 6px; }
.topic-list::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* Topics */
.topic {
  padding: 14px 16px;
  border-bottom: 1px dashed var(--dim);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 68px;
}

.topic:hover {
  background: rgba(255, 0, 170, 0.15);
  transform: translateX(8px);
  box-shadow: 0 0 15px rgba(255, 0, 170, 0.3);
}

.topic.restricted {
  opacity: 0.78;
  filter: brightness(0.88) contrast(1.08);
  border-left: 5px solid var(--warning);
  position: relative;
  overflow: hidden;
  cursor: not-allowed;
}

.topic.restricted:hover {
  filter: brightness(1.02) contrast(1.15);
}

.topic.restricted:hover .topic-title {
  animation: glitch 0.35s linear infinite;
}

@keyframes glitch {
  0% { transform: translate(0); }
  20% { transform: translate(-2px, 2px); }
  40% { transform: translate(-2px, -2px); }
  60% { transform: translate(2px, 2px); }
  80% { transform: translate(2px, -2px); }
  100% { transform: translate(0); }
}

.topic.restricted .topic-title { color: #ff6688; letter-spacing: 2px; user-select: none; }

.topic.restricted::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(45deg, rgba(255,51,102,0.08), rgba(255,51,102,0.08) 4px, transparent 4px, transparent 12px);
  pointer-events: none;
  opacity: 0.6;
}

.topic-title { flex: 1; font-weight: bold; font-size: 1.05rem; padding-right: 10px; }
.topic-info { font-size: 0.82rem; color: var(--dim); text-align: right; min-width: 115px; line-height: 1.3; }

/* Message View */
.message-view {
  display: none;
  flex-direction: column;
  height: calc(100vh - 165px);
}

.message-header {
  padding: 12px 18px;
  border-bottom: 3px solid var(--primary);
  background: rgba(255, 0, 170, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.back-btn {
  background: transparent;
  border: 2px solid var(--secondary);
  color: var(--secondary);
  padding: 8px 18px;
  cursor: pointer;
  font-size: 0.95rem;
}

.back-btn:hover {
  background: var(--secondary);
  color: #000;
}

.messages {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto !important;
  -webkit-overflow-scrolling: touch;
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  font-size: 1.03rem;
  scrollbar-width: thin;
  scrollbar-color: var(--secondary) #050008;
}

.messages::-webkit-scrollbar { width: 6px; }
.messages::-webkit-scrollbar-thumb { background: var(--secondary); }

/* Message content */
.message {
  border-left: 4px solid var(--secondary);
  padding-left: 16px;
  position: relative;
}

.message::before {
  content: ">";
  position: absolute;
  left: -20px;
  color: var(--primary);
  font-weight: bold;
}

.message-header-info {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.87rem;
  margin-bottom: 8px;
  color: var(--accent);
}

.nickname { color: #ff99ff; font-weight: bold; }
.user-level { color: var(--secondary); font-weight: bold; }
.timestamp { opacity: 0.8; }
.message-text { white-space: pre-wrap; color: var(--text); }

.footer {
  text-align: center;
  font-size: 0.78rem;
  padding: 14px;
  color: var(--dim);
  border-top: 1px dashed var(--primary);
  background: rgba(0,0,0,0.4);
}

/* Login Modal - Original Style Restored */
#login-modal {
  position: fixed;
  inset: 0;
  background: rgba(5, 0, 8, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20000;
  padding: 20px;
}

.login-box {
  background: var(--darker);
  border: 3px solid var(--primary);
  padding: 32px 28px;
  width: 100%;
  max-width: 380px;
  text-align: center;
  box-shadow: 0 0 45px rgba(255, 0, 170, 0.65);
}

.login-box h2 {
  color: var(--secondary);
  margin-bottom: 20px;
  text-shadow: 0 0 12px var(--secondary);
  font-size: 1.45rem;
}

.login-box p {
  color: var(--dim);
  margin-bottom: 16px;
}

.login-box input {
  width: 100%;
  padding: 14px;
  margin: 15px 0 20px;
  background: #0a000f;
  border: 2px solid var(--primary);
  color: var(--text);
  font-family: inherit;
  font-size: 1.15rem;
  text-align: center;
}

.login-box button {
  background: var(--primary);
  color: #000;
  border: none;
  padding: 14px 32px;
  font-size: 1.05rem;
  cursor: pointer;
  width: 100%;
  transition: all 0.2s;
}

.login-box button:hover {
  background: #ff66cc;
  box-shadow: 0 0 22px var(--primary);
}

/* Level colors */
.level-name { margin-left: 8px; font-weight: bold; text-shadow: 0 0 6px currentColor; }
.level-red { color: #ff4444; }
.level-orange { color: #ff8800; }
.level-yellow { color: #ffdd44; }
.level-green { color: #00ff88; }
.level-blue { color: #4488ff; }
.level-indigo { color: #aa66ff; }
.level-violet { color: #ff44cc; }
.level-white { color: #eeeeee; }
.level-black { color: #ff2266; text-shadow: 0 0 12px #ff2266; }

/* Responsive */
@media (max-width: 480px) {
  body { padding: 8px; }
  h1 { font-size: 1.7rem; letter-spacing: 4px; }
  .board { max-width: 100%; border-width: 2px; }
  .topic-list { max-height: calc(100vh - 200px); padding: 8px 12px; }
  .topic { padding: 13px 12px; min-height: 64px; }
  .topic-title { font-size: 1rem; }
  .message-view { height: calc(100vh - 155px); }
  .messages { padding: 14px 12px; gap: 20px; }
  .message-header { flex-direction: column; align-items: flex-start; }
  .back-btn { width: 100%; }
  .user-info { text-align: center; }
}

@media (min-width: 481px) {
  .board { max-width: 860px; }
}

/* Nickname colors based on access level */
.nickname.level-red    { color: #ff6666; text-shadow: 0 0 6px #ff4444; }
.nickname.level-orange { color: #ffaa44; text-shadow: 0 0 6px #ff8800; }
.nickname.level-yellow { color: #ffdd66; text-shadow: 0 0 6px #ffcc00; }
.nickname.level-green  { color: #00ff99; text-shadow: 0 0 6px #00cc77; }
.nickname.level-blue   { color: #66aaff; text-shadow: 0 0 6px #4488ff; }
.nickname.level-indigo { color: #aa88ff; text-shadow: 0 0 6px #8866ff; }
.nickname.level-violet { color: #ff77cc; text-shadow: 0 0 6px #ff44aa; }
.nickname.level-white  { color: #eeeeee; text-shadow: 0 0 6px #cccccc; }
.nickname.level-black  { 
  color: #ff3366; 
  text-shadow: 0 0 8px #ff2266, 0 0 12px #ff0000; 
  font-weight: bold;
}

.user-level {
  font-weight: bold;
}