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

:root {
  --bg-dark:   #0f1117;
  --bg-panel:  #161b27;
  --bg-msg:    #1e2535;
  --bg-user:   #1a3a5c;
  --bg-tool:   #1e2a3e;
  --border:    #2a3348;
  --text:      #d4d8e8;
  --text-dim:  #7a8099;
  --accent:    #4a9eff;
  --green:     #4caf7d;
  --red:       #e05555;
  --orange:    #e09a20;
  --purple:    #9b7af0;
  --panel-w:   360px;
}

html, body { height: 100%; overflow: hidden; background: var(--bg-dark); color: var(--text); font-family: 'Segoe UI', system-ui, sans-serif; font-size: 14px; }

#app { display: flex; height: 100vh; }

/* ── Chat panel ── */
#chat-panel {
  width: var(--panel-w);
  min-width: 260px;
  max-width: 60vw;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

#chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: #0d1220;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

#header-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 13px;
  color: var(--accent);
}

.logo { font-size: 18px; }

#mode-badge {
  font-size: 10px;
  font-weight: 400;
  background: rgba(74,158,255,0.15);
  border: 1px solid rgba(74,158,255,0.3);
  border-radius: 10px;
  padding: 1px 7px;
  color: var(--accent);
  letter-spacing: 0.3px;
}

#header-controls { display: flex; align-items: center; gap: 10px; }

.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; transition: background 0.3s; }
.dot.disconnected { background: var(--text-dim); }
.dot.connecting   { background: var(--orange); animation: pulse 1s infinite; }
.dot.connected    { background: var(--green); }
.dot.error        { background: var(--red); }

@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:0.4; } }

#btn-reset {
  background: none; border: 1px solid var(--border); color: var(--text-dim);
  border-radius: 4px; padding: 3px 7px; cursor: pointer; font-size: 15px; line-height: 1;
  transition: color 0.2s, border-color 0.2s;
}
#btn-reset:hover { color: var(--text); border-color: var(--accent); }

#status-bar {
  padding: 5px 12px; font-size: 11px; color: var(--text-dim);
  border-bottom: 1px solid var(--border); min-height: 24px;
  flex-shrink: 0; background: #0f1620;
}
#status-bar:empty { min-height: 0; border: none; }

/* ── Connection status bar ── */
#conn-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: #0a0f1a;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  font-size: 11px;
  color: var(--text-dim);
}

.conn-item { display: flex; align-items: center; gap: 4px; }

.clabel { font-size: 11px; color: var(--text-dim); }

.cdivider { color: var(--border); font-size: 14px; line-height: 1; margin: 0 2px; }

.conn-time { margin-left: auto; font-size: 10px; color: var(--text-dim); opacity: 0.6; }

.cdot {
  width: 8px; height: 8px; border-radius: 50%;
  display: inline-block; flex-shrink: 0; transition: background 0.4s;
}
.cdot-connected    { background: var(--green); }
.cdot-connecting   { background: var(--orange); animation: pulse 1.2s infinite; }
.cdot-reconnecting { background: var(--orange); animation: pulse 0.7s infinite; }
.cdot-disconnected { background: var(--red); }
.cdot-error        { background: var(--red); }
.cdot-unknown      { background: var(--text-dim); }

/* ── Messages ── */
#messages {
  flex: 1; overflow-y: auto; padding: 10px 10px 6px;
  display: flex; flex-direction: column; gap: 8px;
  scroll-behavior: smooth;
}
#messages::-webkit-scrollbar { width: 4px; }
#messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.msg {
  padding: 8px 11px; border-radius: 8px; line-height: 1.5;
  word-break: break-word; font-size: 13px; max-width: 100%;
  flex-shrink: 0;
}

.msg-user {
  background: var(--bg-user); align-self: flex-end;
  border-bottom-right-radius: 2px; color: #b8d4f0;
  white-space: pre-wrap;
}

.msg-assistant {
  background: var(--bg-msg); align-self: flex-start;
  border-bottom-left-radius: 2px; white-space: normal;
}

/* Markdown in assistant messages */
.msg-assistant p  { margin: 0 0 6px; }
.msg-assistant p:last-child { margin-bottom: 0; }
.msg-assistant strong { color: #e0e8ff; font-weight: 700; }
.msg-assistant em  { font-style: italic; color: #c8d4f0; }
.msg-assistant code { background: #0f1220; border: 1px solid var(--border); border-radius: 3px; padding: 1px 5px; font-family: monospace; font-size: 12px; color: #a0d0ff; }
.msg-assistant pre { background: #0f1220; border: 1px solid var(--border); border-radius: 4px; padding: 8px 10px; overflow-x: auto; margin: 6px 0; }
.msg-assistant pre code { background: none; border: none; padding: 0; }
.msg-assistant blockquote { border-left: 3px solid var(--accent); padding: 2px 10px; margin: 6px 0; color: var(--text-dim); font-style: italic; }
.msg-assistant ul, .msg-assistant ol { padding-left: 18px; margin: 4px 0; }
.msg-assistant li  { margin: 2px 0; }
.msg-assistant h1, .msg-assistant h2, .msg-assistant h3 { color: #e0e8ff; font-size: 13px; font-weight: 700; margin: 6px 0 4px; }
.msg-assistant a   { color: var(--accent); text-decoration: underline; }

.msg-system {
  background: #1c2a1c; border: 1px solid #2a402a;
  font-size: 12px; color: #8abf8a; font-style: italic;
  white-space: pre-wrap;
}

.msg-error {
  background: #3a1c1c; border: 1px solid #5a2a2a;
  color: #f09090; font-size: 12px; white-space: pre-wrap;
}

/* Tool call rows */
.msg-tool {
  background: #1e2a3e; border: 1px solid #2e3f5c;
  border-left: 3px solid #7b52d4; border-radius: 6px;
  overflow: hidden; flex-shrink: 0; min-height: 32px;
}
.tool-header {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 12px; min-height: 32px; cursor: pointer;
}
.tool-header:hover { background: rgba(155,122,240,0.1); }
.tool-icon       { color: #9b7af0; flex-shrink: 0; }
.tool-name-text  { color: #c8aaff; font-weight: 600; font-size: 12px; font-family: monospace; flex: 1; }
.tool-caret      { color: #8090a8; font-size: 15px; flex-shrink: 0; transition: transform 0.2s; display: inline-block; }
.tool-body       { display: none; border-top: 1px solid #2e3f5c; padding: 6px 10px; }
.tool-args       { color: #7a8099; font-size: 11px; white-space: pre-wrap; word-break: break-all; font-family: monospace; }
.tool-result     { color: #70d070; font-size: 11px; margin-top: 6px; white-space: pre-wrap; word-break: break-all; font-family: monospace; max-height: 120px; overflow-y: auto; }
.tool-result.pending { color: var(--text-dim); font-style: italic; }

.msg-thinking {
  color: var(--text-dim); font-size: 12px; font-style: italic;
  display: flex; align-items: center; gap: 6px;
  flex-shrink: 0;
}
.spinner {
  width: 12px; height: 12px; border: 2px solid var(--border);
  border-top-color: var(--accent); border-radius: 50%;
  animation: spin 0.7s linear infinite; flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Input row ── */
#input-row {
  display: flex; gap: 8px; padding: 10px;
  border-top: 1px solid var(--border); flex-shrink: 0;
  background: #0d1220;
}

#chat-input {
  flex: 1; background: var(--bg-msg); border: 1px solid var(--border);
  border-radius: 6px; color: var(--text); padding: 8px 10px;
  font-size: 13px; resize: none; line-height: 1.4; font-family: inherit;
  transition: border-color 0.2s;
}
#chat-input:focus { outline: none; border-color: var(--accent); }
#chat-input::placeholder { color: var(--text-dim); }

#btn-send {
  background: var(--accent); border: none; border-radius: 6px;
  color: #fff; padding: 0 14px; cursor: pointer; font-size: 13px;
  font-weight: 600; align-self: flex-end; height: 36px;
  transition: opacity 0.2s; flex-shrink: 0;
}
#btn-send:hover:not(:disabled) { opacity: 0.85; }
#btn-send:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Divider ── */
#divider {
  width: 5px; background: #21262d; cursor: col-resize; flex-shrink: 0;
  transition: background 0.15s;
}
#divider:hover, #divider.dragging { background: var(--accent); }

/* ── Browser panel ── */
#browser-panel { flex: 1; position: relative; overflow: hidden; background: #000; min-width: 0; }

#vnc-overlay { position: absolute; top: 8px; left: 8px; z-index: 10; pointer-events: none; }
#vnc-label {
  background: rgba(0,0,0,0.6); color: var(--text-dim);
  font-size: 11px; padding: 3px 8px; border-radius: 4px;
  border: 1px solid var(--border);
}
#vnc-frame { width: 100%; height: 100%; border: none; display: block; }

/* ── Toast ── */
#toast-container {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  z-index: 9999; display: flex; flex-direction: column; align-items: center;
  gap: 8px; pointer-events: none;
}
.toast {
  background: #1e2535; border: 1px solid var(--border); color: var(--text);
  font-size: 12px; padding: 8px 16px; border-radius: 20px;
  opacity: 0; transform: translateY(10px);
  transition: opacity 0.25s, transform 0.25s; pointer-events: none;
  white-space: nowrap; box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.toast.show        { opacity: 1; transform: translateY(0); }
.toast.toast-success { border-color: var(--green);  color: #8fd8a8; }
.toast.toast-error   { border-color: var(--red);    color: #f09090; }
.toast.toast-info    { border-color: var(--accent);  color: #90c0f0; }
.toast.toast-warning { border-color: var(--orange); color: #f0c060; }