* { box-sizing: border-box; }
:root {
  color-scheme: dark;
  --ui-font-size: 15px;
  /* defaults overridden by themes.js on load */
  --bg: #221F3D;
  --bg-elevated: #2A2549;
  --bg-sidebar: #1B1834;
  --bg-active: #3D2F6B;
  --bg-hover: #2F2856;
  --border: #3A3263;
  --border-strong: #5A4E8A;
  --fg: #F8F8F2;
  --fg-dim: #A39FCB;
  --fg-muted: #6E6A9A;
  --accent: #FF61F2;
  --accent-2: #65D5F1;
  --danger: #FF5C8A;
  --warn: #FFE261;
}
[hidden] { display: none !important; }
body {
  margin: 0;
  font-family: "Inter", -apple-system, "Segoe UI", system-ui, sans-serif;
  font-size: var(--ui-font-size);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: var(--bg); color: var(--fg);
  height: 100vh; overflow: hidden;
  letter-spacing: -0.005em;
}
.mono, code, kbd, pre { font-family: "JetBrains Mono", ui-monospace, "Cascadia Code", Consolas, monospace; }
button { touch-action: manipulation; }
.modal {
  position: fixed; inset: 0; background: var(--bg);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px;
}
.modal h2 { font-size: 22px; font-weight: 600; letter-spacing: -0.01em; margin: 0; }
.modal #login-sub { color: var(--fg-dim); margin: 0 0 8px; font-size: 13px; }
.modal #login-err {
  color: var(--danger); font-size: 13px; max-width: 360px; text-align: center;
  margin: 8px 0 0;
}
.modal #login-form {
  display: flex; flex-direction: column; gap: 10px; width: 280px;
}
.modal #login-password {
  padding: 10px 12px; font-size: 14px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg-sidebar); color: var(--fg);
  font-family: inherit;
}
.modal #login-password:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.modal #login-submit {
  padding: 10px 14px; font-size: 14px; border-radius: 8px;
  border: none; background: var(--accent); color: #fff; font-weight: 500;
  cursor: pointer; font-family: inherit;
}
.modal #login-submit:hover { filter: brightness(1.1); }
.modal #login-submit:disabled { opacity: 0.6; cursor: wait; }

#app { display: grid; grid-template-columns: 300px 1fr; height: 100vh; }
#sidebar { background: var(--bg-sidebar); border-right: 1px solid var(--border); overflow-y: auto; padding: 14px 10px; }
#sidebar-title {
  font-size: 11px; text-transform: uppercase; color: var(--fg-muted);
  margin: 4px 10px 16px; letter-spacing: 0.12em; font-weight: 600;
  display: flex; justify-content: space-between; align-items: center;
}
#sidebar-title .title-controls { display: flex; align-items: center; gap: 4px; }
#sidebar-title .theme-select {
  background: transparent; border: 1px solid var(--border);
  color: var(--fg-dim); border-radius: 6px; padding: 3px 8px;
  font: inherit; font-size: 11px; cursor: pointer;
  text-transform: none; letter-spacing: 0;
}
#sidebar-title .theme-select:hover { border-color: var(--border-strong); }
#sidebar-title .size-btn {
  background: transparent; border: 1px solid var(--border);
  color: var(--fg-dim); border-radius: 6px;
  padding: 0; width: 24px; height: 22px;
  font: inherit; font-size: 11px; font-weight: 500;
  cursor: pointer; text-transform: none; letter-spacing: 0;
  display: inline-flex; align-items: center; justify-content: center;
}
#sidebar-title .size-btn:hover { border-color: var(--border-strong); color: var(--fg); }

/* Machine group header */
.machine-group { margin-bottom: 14px; }
.machine-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 10px 6px; margin-bottom: 2px;
  user-select: none;
}
.machine-header .machine-label {
  display: flex; align-items: center; gap: 8px;
  font-weight: 500; font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--fg-dim);
}
.machine-header .machine-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #4ade80; box-shadow: 0 0 6px #4ade80aa;
}
.machine-header.offline .machine-label { color: var(--fg-muted); }
.machine-header.offline .machine-dot { background: var(--fg-muted); box-shadow: none; }
.machine-add-btn {
  background: transparent; border: 1px solid var(--border);
  color: var(--fg-dim); cursor: pointer;
  width: 24px; height: 24px; padding: 0; border-radius: 8px;
  font-size: 15px; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}
.machine-add-btn:hover { background: var(--bg-hover); color: var(--accent); border-color: var(--border-strong); }
.machine-add-btn[disabled] { opacity: 0.35; cursor: not-allowed; }

/* Two-line session rows (Warp-terminal style) */
.session {
  display: flex; align-items: stretch; gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  margin: 3px 0;
  cursor: pointer;
  min-height: 54px;
  border: 1px solid transparent;
  transition: background 0.12s ease, border-color 0.12s ease;
}
.session:hover { background: var(--bg-hover); }
.session.active { background: var(--bg-active); border-color: var(--border); }
.session.active .session-name { color: var(--accent-2); }
.session-icon {
  flex: 0 0 auto;
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-elevated);
  border-radius: 8px;
  font-size: 15px;
  margin-top: 1px;
}
.session-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.session-line1 { display: flex; align-items: center; gap: 6px; }
.session-name {
  font-size: 0.95em; font-weight: 500; color: var(--fg);
  letter-spacing: -0.005em;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; min-width: 0;
}
.session-status-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--fg-muted); flex-shrink: 0;
}
.session-status-dot.running { background: #4ade80; box-shadow: 0 0 4px #4ade80cc; }
.session-line2 {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.8em; color: var(--fg-muted);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.session-line2 .sep { opacity: 0.5; }
.session-actions { display: none; flex-direction: column; gap: 2px; flex-shrink: 0; justify-content: center; }
.session:hover .session-actions, .session.active .session-actions { display: flex; }
.icon-btn { background: transparent; border: 0; color: var(--fg-dim); cursor: pointer; padding: 2px 6px; border-radius: 3px; font-size: 12px; line-height: 1; }
.icon-btn:hover { background: var(--border-strong); color: var(--fg); }
.icon-btn-danger:hover { background: var(--danger); color: white; }

#chat-area { display: flex; flex-direction: column; min-width: 0; background: var(--bg); }
#chat-header {
  padding: 12px 18px; border-bottom: 1px solid var(--border);
  flex: 0 0 auto; color: var(--fg);
  display: flex; align-items: center; gap: 10px;
  min-height: 44px;
}
.chat-title { font-size: 0.95em; font-weight: 600; letter-spacing: -0.01em; color: var(--fg); }
.chat-chip {
  font-size: 0.75em; padding: 3px 9px; border-radius: 999px;
  background: var(--bg-elevated); color: var(--fg-dim);
  border: 1px solid var(--border);
}
.chat-chip.subtle { background: transparent; }

#terminal-wrap { flex: 1 1 0; min-height: 0; background: var(--bg); padding: 8px; }
#terminal { width: 100%; height: 100%; }
#terminal .xterm { height: 100%; }
#terminal .xterm-viewport { background-color: var(--bg) !important; }
#terminal .xterm-screen { background-color: var(--bg) !important; }

#terminal-toolbar { display: flex; flex-direction: column; gap: 6px; padding: 6px 8px calc(6px + env(safe-area-inset-bottom)); border-top: 1px solid var(--border); background: var(--bg-sidebar); color: var(--fg-muted); font-size: 12px; flex: 0 0 auto; }
.toolbar-row { display: flex; align-items: center; gap: 6px; overflow-x: auto; scrollbar-width: thin; }
.toolbar-main { justify-content: flex-start; }
.toolbar-keys { padding-bottom: 2px; }
.tool-btn {
  flex: 0 0 auto; min-height: 32px; padding: 6px 12px;
  color: var(--fg); background: var(--bg-elevated);
  border: 1px solid var(--border); border-radius: 8px;
  cursor: pointer; font: inherit; font-size: 12px; font-weight: 500;
  white-space: nowrap;
  transition: background 0.12s ease, border-color 0.12s ease;
}
.tool-btn:hover { background: var(--bg-hover); border-color: var(--border-strong); }
.tool-btn:active { transform: translateY(1px); }
.tool-btn.primary { background: var(--accent); border-color: var(--accent); color: #1E1B18; font-weight: 600; }
.tool-btn.primary:hover { background: var(--accent-2); border-color: var(--accent-2); }
.tool-btn.danger { background: var(--danger); border-color: var(--danger); color: white; }
.tool-btn.warn { background: var(--warn); border-color: var(--warn); color: #2a1700; }
.tool-btn.nav { min-width: 36px; font-size: 15px; }
#terminal-status { margin-left: auto; min-width: 12em; color: var(--accent-2); text-align: right; }

@media (max-width: 760px) {
  #app { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  #sidebar { max-height: 36vh; border-right: 0; border-bottom: 1px solid var(--border); }
  #chat-header { padding: 8px 10px; font-size: 12px; }
  #terminal-wrap { padding: 4px; }
  #terminal-toolbar { font-size: 12px; }
  .tool-btn { min-height: 36px; padding: 7px 10px; }
  #terminal-status { min-width: 10em; }
}

dialog {
  background: var(--bg-elevated); color: inherit;
  border: 1px solid var(--border); border-radius: 14px;
  padding: 28px; box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
dialog::backdrop { background: rgba(0,0,0,0.55); backdrop-filter: blur(2px); }
dialog form { display: flex; flex-direction: column; gap: 14px; min-width: 380px; }
dialog h3 { margin: 0 0 4px; font-size: 16px; font-weight: 600; letter-spacing: -0.01em; }
dialog label { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: var(--fg-dim); font-weight: 500; }
dialog input, dialog select {
  padding: 9px 12px; background: var(--bg-sidebar); color: var(--fg);
  border: 1px solid var(--border); border-radius: 8px; font: inherit;
  font-size: 13px;
  transition: border-color 0.12s ease;
}
dialog input:focus, dialog select:focus { outline: none; border-color: var(--accent); }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; }
.dialog-actions button {
  padding: 8px 16px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg-sidebar); color: var(--fg); cursor: pointer;
  font: inherit; font-size: 13px; font-weight: 500;
  transition: background 0.12s ease, border-color 0.12s ease;
}
.dialog-actions button:hover { background: var(--bg-hover); border-color: var(--border-strong); }
.dialog-actions button[value="ok"], .dialog-actions #ns-submit {
  background: var(--accent); border-color: var(--accent); color: #1E1B18; font-weight: 600;
}
.dialog-actions button[value="ok"]:hover, .dialog-actions #ns-submit:hover {
  background: var(--accent-2); border-color: var(--accent-2);
}

.picker-group { display: flex; flex-direction: column; gap: 4px; font-size: 13px; }
.picker-label { font-size: 13px; color: var(--fg-dim); }
.picker {
  display: flex; flex-wrap: wrap; gap: 6px; padding: 6px;
  background: var(--bg-sidebar); border: 1px solid var(--border);
  border-radius: 8px; min-height: 40px;
}
.picker:empty::before {
  content: "no online machines — start an agent first";
  color: var(--fg-muted); font-size: 12px; padding: 4px;
}
.picker-opt {
  padding: 6px 12px; background: transparent; color: var(--fg-dim);
  border: 1px solid transparent; border-radius: 6px;
  cursor: pointer; font: inherit; font-size: 13px;
  transition: background 0.12s ease, color 0.12s ease;
}
.picker-opt:hover { background: var(--bg-hover); color: var(--fg); }
.picker-opt.selected {
  background: var(--bg-active); border-color: var(--border-strong);
  color: var(--fg);
}