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

  :root {
    --bg:        #060e08;
    --bg-window: #08110a;
    --bg-bar:    #0c1e10;
    --bg-input:  #050d07;
    --border:    #173020;
    --text:      #a8d4b0;
    --text-dim:  #3d6648;
    --topic:     #5a9e6a;
    --cursor:    #4fcf72;
  }

  html {
    height: 100%;
    overflow-y: auto;
  }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Fira Code', monospace;
    font-size: 14px;
    min-height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
  }

  .irc-window {
    width: 100%;
    max-width: 820px;
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 8px 48px rgba(0,0,0,0.8), 0 0 0 1px rgba(79,207,114,0.04);
  }

  /* title bar */
  .irc-titlebar {
    background: var(--bg-bar);
    padding: 8px 14px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border);
    user-select: none;
  }
  .irc-channel {
    font-weight: 500;
    font-size: 13px;
    color: var(--cursor);
    letter-spacing: 0.03em;
    text-decoration: none;
  }
  .irc-channel:hover { text-decoration: underline; }

  /* topic bar */
  .irc-topic {
    background: var(--bg-window);
    border-bottom: 1px solid var(--border);
    padding: 6px 14px;
    font-size: 12px;
    color: var(--topic);
  }
  .irc-topic a { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
  .irc-topic a:hover { color: var(--text); }

  /* body: messages + nicklist */
  .irc-body {
    display: flex;
    background: var(--bg-window);
  }

  .irc-messages {
    flex: 1;
    padding: 14px 0;
    min-width: 0;
  }

  .irc-line {
    padding: 2px 14px;
    line-height: 1.6;
    display: flex;
    gap: 1ch;
  }
  .irc-line:hover { background: rgba(79,207,114,0.04); }

  .irc-nick-wrap {
    width: 10ch;
    flex-shrink: 0;
    text-align: right;
    white-space: nowrap;
    font-weight: 400;
  }
  .irc-nick-wrap::before { color: var(--text-dim); content: '<'; }
  .irc-nick-wrap::after  { color: var(--text-dim); content: '>'; }

  .irc-msg { color: var(--text); word-break: break-word; }

  /* nicklist sidebar */
  .irc-nicklist {
    width: 130px;
    flex-shrink: 0;
    border-left: 1px solid var(--border);
    padding: 14px 0 14px 12px;
    font-size: 12.5px;
  }
  .irc-nicklist-header {
    color: var(--text-dim);
    font-size: 11px;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
  }
  .irc-nick-entry { padding: 2px 0; font-weight: 400; }
  .irc-nick-entry.away { opacity: 0.45; font-style: italic; }
  .irc-nick-entry.away::after { content: ' (away)'; font-size: 10px; color: var(--text-dim); }

  .irc-narrator .irc-nick-wrap::before,
  .irc-narrator .irc-nick-wrap::after { content: ''; }
  .irc-narrator .irc-nick-wrap,
  .irc-narrator .irc-msg {
    color: #7744aa;
    font-style: italic;
  }
  .irc-msg.autoreply { font-style: italic; opacity: 0.6; }

  /* input bar */
  .irc-inputbar {
    background: var(--bg-input);
    border-top: 1px solid var(--border);
    padding: 8px 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-dim);
  }
  .irc-inputbar-prompt { color: var(--topic); }
  .irc-typed { color: var(--text); }
  .irc-cursor {
    display: inline-block;
    width: 7px;
    height: 1em;
    background: var(--cursor);
    vertical-align: text-bottom;
    animation: blink 1.1s step-end infinite;
    box-shadow: 0 0 6px var(--cursor);
  }
  .irc-inputbar-since {
    margin-left: auto;
    font-size: 11px;
  }
  .irc-inputbar-since a { color: var(--text-dim); text-decoration: none; }
  .irc-inputbar-since a:hover { color: var(--text); }

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

  @media (max-width: 520px) {
    body { padding: 0; align-items: flex-start; }
    .irc-window { border-radius: 0; border-left: none; border-right: none; }
    .irc-nicklist { display: none; }
    .irc-line { display: block; }
    .irc-nick-wrap { display: inline; }
    .irc-msg { display: inline; }
  }