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

  :root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d28;
    --bg-tertiary: #252836;
    --bg-hover: #2e3142;
    --text-primary: #e4e6ed;
    --text-secondary: #9ca0af;
    --text-muted: #5f6371;
    --accent: #5b7ff6;
    --accent-hover: #4a6de5;
    --user-bubble: #5b7ff6;
    --bot-bubble: #252836;
    --error: #f65b5b;
    --success: #4ecf73;
    --warning: #f6c95b;
    --border: #2a2d3a;
    --radius: 8px;
  }

  body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }

  /* Config bar is hidden, no styles needed */

  /* ---- Main Layout ---- */
  #main {
    display: flex;
    flex: 1;
    overflow: hidden;
  }

  /* ---- Sidebar ---- */
  #sidebar {
    width: 280px;
    min-width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }
  .sidebar-section {
    padding: 16px;
    border-bottom: 1px solid var(--border);
  }
  .sidebar-section h3 {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 12px;
  }

  /* ---- Auth Form ---- */
  .auth-form { display: flex; flex-direction: column; gap: 8px; }
  .auth-form input, .auth-form button {
    padding: 8px 12px;
    border-radius: var(--radius);
    font-size: 13px;
    border: 1px solid var(--border);
  }
  .auth-form input {
    background: var(--bg-tertiary);
    color: var(--text-primary);
  }
  .auth-form input:focus { outline: 1px solid var(--accent); border-color: var(--accent); }
  .auth-form button {
    background: var(--accent);
    color: #fff;
    border: none;
    cursor: pointer;
    font-weight: 600;
  }
  .auth-form button:hover { background: var(--accent-hover); }
  .auth-form button:disabled { opacity: 0.5; cursor: not-allowed; }
  .auth-status {
    font-size: 12px;
    color: var(--success);
    padding: 6px 0;
  }
  .auth-status.error { color: var(--error); }
  .auth-actions {
    display: flex;
    gap: 8px;
    margin-top: 4px;
  }
  .danger-btn {
    font-size: 11px;
    color: var(--text-muted);
    background: none;
    border: 1px solid var(--border);
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
  }
  .danger-btn:hover { color: var(--error); border-color: var(--error); }
  .danger-btn:disabled { opacity: 0.5; cursor: not-allowed; }
  #logout-btn {
    font-size: 11px;
    color: var(--text-muted);
    background: none;
    border: 1px solid var(--border);
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 4px;
  }
  #logout-btn:hover { color: var(--error); border-color: var(--error); }

  /* ---- Character List ---- */
  #character-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px 16px;
  }
  .char-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    border-radius: var(--radius);
    cursor: pointer;
    margin-bottom: 4px;
    transition: background 0.15s;
  }
  .char-card:hover { background: var(--bg-hover); }
  .char-card.active { background: var(--accent); }
  .char-card.active .char-about { color: rgba(255,255,255,0.7); }
  .char-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    flex-shrink: 0;
    object-fit: cover;
  }
  .char-info { overflow: hidden; }
  .char-name { font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .char-about { font-size: 11px; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

  /* ---- Chat Area ---- */
  #chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
  }
  #chat-header {
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
  }
  #chat-header-left { display: flex; align-items: center; gap: 10px; }
  #chat-char-name { font-weight: 600; font-size: 14px; }
  .conn-status {
    font-size: 11px;
    display: flex;
    align-items: center;
    gap: 5px;
  }
  .conn-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
  }
  .conn-dot.connected { background: var(--success); }
  .conn-dot.connecting { background: var(--warning, #f0ad4e); animation: pulse-dot 1s infinite; }
  .conn-dot.error { background: var(--error); }
  @keyframes pulse-dot { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }

  #chat-connecting-overlay {
    position: absolute; inset: 0;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    background: var(--bg-secondary);
    z-index: 5;
    gap: 12px;
  }
  .conn-ring {
    width: 48px; height: 48px;
    animation: conn-ring-rotate 1.4s linear infinite;
  }
  .conn-ring-track {
    fill: none;
    stroke: var(--border);
    stroke-width: 4;
  }
  .conn-ring-fill {
    fill: none;
    stroke: var(--accent);
    stroke-width: 4;
    stroke-linecap: round;
    stroke-dasharray: 138;
    stroke-dashoffset: 100;
    animation: conn-ring-dash 1.4s ease-in-out infinite;
  }
  @keyframes conn-ring-rotate { to { transform: rotate(360deg); } }
  @keyframes conn-ring-dash {
    0%   { stroke-dashoffset: 130; }
    50%  { stroke-dashoffset: 40; }
    100% { stroke-dashoffset: 130; }
  }
  #chat-connecting-overlay span { color: var(--text-muted); font-size: 13px; }
  #cancel-connect-btn {
    margin-top: 4px; padding: 6px 20px;
    background: transparent; color: var(--text-muted);
    border: 1px solid var(--border-color); border-radius: 6px;
    cursor: pointer; font-size: 12px;
  }
  #cancel-connect-btn:hover { color: var(--error); border-color: var(--error); }

  /* ---- Audio Mode Selector ---- */
  #audio-mode-bar {
    display: flex; align-items: center; gap: 8px;
    padding: 4px 16px; background: var(--bg-secondary);
    border-top: 1px solid var(--border); flex-shrink: 0;
  }
  #audio-mode-bar label {
    font-size: 11px; color: var(--text-muted); text-transform: uppercase; margin-right: 4px;
  }
  .mode-btn {
    font-size: 11px; padding: 4px 12px;
    background: var(--bg-tertiary); border: 1px solid var(--border);
    color: var(--text-secondary); border-radius: 4px; cursor: pointer;
  }
  .mode-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
  .mode-btn:hover:not(.active) { background: var(--bg-hover); }

  /* ---- PTT / VAD Controls ---- */
  #ptt-btn {
    flex: 1; height: 42px; border-radius: 21px;
    border: 2px solid var(--border); background: var(--bg-tertiary);
    color: var(--text-secondary); font-size: 13px; cursor: pointer;
    transition: all 0.15s; user-select: none;
  }
  #ptt-btn:active, #ptt-btn.recording {
    background: var(--error); border-color: var(--error); color: #fff;
  }
  #vad-mic-btn {
    width: 48px; height: 48px; border-radius: 50%;
    border: 2px solid var(--border); background: var(--bg-tertiary);
    color: var(--text-secondary); font-size: 20px; cursor: pointer;
    transition: all 0.15s; flex-shrink: 0;
  }
  #vad-mic-btn.listening {
    background: var(--error); border-color: var(--error); color: #fff;
    animation: pulse-dot 1.5s infinite;
  }
  #vad-meter-wrap {
    width: 80px; height: 8px;
    background: var(--bg-primary);
    border-radius: 4px;
    overflow: hidden;
    flex-shrink: 0;
    border: 1px solid var(--border);
  }
  #vad-meter-bar {
    height: 100%; width: 0%;
    background: var(--success);
    border-radius: 4px;
    transition: width 0.06s ease-out;
  }
  #vad-status {
    font-size: 11px; color: var(--text-muted); flex: 1; text-align: center;
  }
  .recording-dot {
    display: inline-block; width: 8px; height: 8px;
    border-radius: 50%; background: var(--error);
    margin-right: 6px; animation: pulse-dot 1s infinite;
  }
  #ptt-timer {
    font-size: 11px; color: var(--text-muted);
    margin-left: 4px; font-variant-numeric: tabular-nums;
  }
  .voice-play-btn {
    display: inline-flex; align-items: center;
    background: var(--bg-tertiary); border: 1px solid var(--border);
    color: var(--text-secondary); border-radius: 16px;
    padding: 3px 10px; font-size: 11px; cursor: pointer;
    margin-left: 8px; transition: background 0.15s;
  }
  .voice-play-btn:hover { background: var(--bg-hover); }
  .voice-play-btn.playing { color: var(--accent); border-color: var(--accent); }

  /* ---- Image Lightbox ---- */
  #image-lightbox {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,0.85); z-index: 100;
    align-items: center; justify-content: center;
    cursor: zoom-out;
  }
  #image-lightbox.visible { display: flex; }
  #image-lightbox img {
    max-width: 90vw; max-height: 90vh;
    border-radius: 8px;
    box-shadow: 0 4px 30px rgba(0,0,0,0.5);
  }
  #lightbox-loading {
    color: var(--text-muted); font-size: 13px;
    position: absolute;
  }
  #reset-memory-btn {
    font-size: 11px;
    margin-left: auto;
    margin-right: 8px;
  }
  #disconnect-btn {
    font-size: 11px;
    color: var(--text-muted);
    background: none;
    border: 1px solid var(--border);
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
  }
  #disconnect-btn:hover { color: var(--error); border-color: var(--error); }

  /* ---- Messages ---- */
  #messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  #load-more-wrap {
    text-align: center;
    padding: 8px;
  }
  #load-more-btn {
    font-size: 12px;
    color: var(--accent);
    background: none;
    border: 1px solid var(--accent);
    padding: 4px 14px;
    border-radius: 4px;
    cursor: pointer;
  }
  #load-more-btn:hover { background: rgba(91,127,246,0.1); }
  .msg {
    max-width: 75%;
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 1.45;
    word-wrap: break-word;
    white-space: pre-wrap;
  }
  .msg.user {
    align-self: flex-end;
    background: var(--user-bubble);
    color: #fff;
    border-bottom-right-radius: 4px;
  }
  .msg.bot {
    align-self: flex-start;
    background: var(--bot-bubble);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
  }
  .msg.bot.streaming { opacity: 0.9; }
  .msg.system {
    align-self: center;
    background: none;
    color: var(--text-muted);
    font-size: 12px;
    font-style: italic;
    padding: 4px;
  }
  .msg.error-msg {
    align-self: center;
    background: rgba(246,91,91,0.15);
    color: var(--error);
    font-size: 12px;
    padding: 8px 14px;
  }
  .msg-media {
    margin-bottom: 6px;
  }
  .msg-media img {
    max-width: 240px;
    max-height: 240px;
    border-radius: 8px;
    cursor: pointer;
    display: block;
  }
  .msg.user .msg-media img {
    border: 1px solid rgba(255,255,255,0.15);
  }
  .msg.bot .msg-media img {
    border: 1px solid var(--border);
  }
  .msg-media-placeholder {
    width: 180px; height: 120px;
    border-radius: 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    gap: 6px; color: var(--text-muted); font-size: 11px;
  }
  .msg-media-placeholder .placeholder-spinner {
    width: 14px; height: 14px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
  }

  /* ---- Image Preview Strip ---- */
  #image-preview-strip {
    padding: 8px 16px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }
  #image-preview-inner {
    position: relative;
    display: inline-block;
  }
  #image-preview-thumb {
    height: 56px;
    width: 56px;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid var(--border);
  }
  #image-preview-remove {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--error);
    color: #fff;
    border: none;
    font-size: 12px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  #image-upload-status {
    font-size: 11px;
    color: var(--text-muted);
  }

  /* ---- Chat Input ---- */
  #chat-input-area {
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    display: flex;
    gap: 8px;
    flex-shrink: 0;
    align-items: center;
  }
  #attach-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.15s;
  }
  #attach-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
  #chat-input {
    flex: 1;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-primary);
    font-size: 14px;
    resize: none;
    font-family: inherit;
  }
  #chat-input:focus { outline: none; border-color: var(--accent); }
  #send-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent);
    border: none;
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  #send-btn:hover { background: var(--accent-hover); }
  #send-btn:disabled { opacity: 0.4; cursor: not-allowed; }

  /* ---- Placeholder ---- */
  #chat-placeholder {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 14px;
  }

  /* ---- Cache Inspector ---- */
  #cache-panel {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    flex-shrink: 0;
  }
  #cache-header {
    padding: 6px 16px;
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-muted);
    cursor: pointer;
    display: flex; justify-content: space-between; align-items: center;
    border-bottom: 1px solid var(--border);
  }
  #cache-header:hover { color: var(--text-secondary); }
  #cache-body {
    overflow-y: auto;
    max-height: 220px;
    padding: 8px 12px;
    font-size: 11px;
    font-family: var(--font-mono);
  }
  #cache-body.collapsed { display: none; }
  .cache-section-title {
    color: var(--accent);
    margin: 6px 0 4px;
    font-weight: 600;
    font-size: 11px;
  }
  .cache-section-title:first-child { margin-top: 0; }
  .cache-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 8px;
  }
  .cache-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 4px;
    max-width: 90px;
  }
  .cache-item img {
    width: 60px; height: 60px;
    object-fit: cover;
    border-radius: 4px;
  }
  .cache-item-key {
    font-size: 9px;
    color: var(--text-muted);
    word-break: break-all;
    text-align: center;
    max-height: 24px;
    overflow: hidden;
  }
  .cache-empty {
    color: var(--text-muted);
    font-style: italic;
    padding: 4px 0;
  }

  /* ---- Event Log ---- */
  #event-log-panel {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    max-height: 250px;
    display: flex;
    flex-direction: column;
  }
  #event-log-header {
    padding: 6px 16px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    user-select: none;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
  }
  #event-log-header:hover { color: var(--text-secondary); }
  #event-log-toggle { font-size: 10px; }
  #event-log-entries {
    overflow-y: auto;
    padding: 4px 12px;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 11px;
    line-height: 1.6;
    flex: 1;
  }
  #event-log-entries.collapsed { display: none; }
  .log-entry { color: var(--text-secondary); }
  .log-entry .log-time { color: var(--text-muted); margin-right: 6px; }
  .log-entry .log-dir-out { color: var(--accent); }
  .log-entry .log-dir-in { color: var(--success); }
  .log-entry .log-event { color: var(--warning); }
  .log-entry .log-data { color: var(--text-muted); }
  #clear-log-btn {
    font-size: 10px;
    color: var(--text-muted);
    background: none;
    border: none;
    cursor: pointer;
    margin-left: 8px;
  }
  #clear-log-btn:hover { color: var(--text-secondary); }