:root {
  --bg: #18181b;
  --bg2: #1e1e24;
  --bg3: #272730;
  --bg4: #32323e;
  --border: #383848;
  --fg: #e4e4e7;
  --fg-dim: #a1a1aa;
  --accent: #2563eb;
  --accent-hover: #3b82f6;
  --accent-glow: rgba(37, 99, 235, 0.35);
  --green: #22c55e;
  --green-bg: rgba(34, 197, 94, 0.15);
  --red: #ef4444;
  --red-bg: rgba(239, 68, 68, 0.15);
  --yellow: #f59e0b;
  --yellow-bg: rgba(245, 158, 11, 0.15);
  --blue: #38bdf8;
  --purple: #a855f7;
  --teal: #14b8a6;
  --radius: 6px;
}

body.theme-light {
  --bg: #f8fafc;
  --bg2: #ffffff;
  --bg3: #f1f5f9;
  --bg4: #e2e8f0;
  --border: #cbd5e1;
  --fg: #0f172a;
  --fg-dim: #64748b;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-glow: rgba(37, 99, 235, 0.2);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font: 13px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  overflow: hidden;
}

#root {
  display: grid;
  grid-template-columns: 48px 280px 1fr 380px;
  grid-template-rows: 1fr 180px 24px;
  height: 100vh;
  width: 100vw;
}

#root.term-collapsed { grid-template-rows: 1fr 30px 24px; }
#root.term-collapsed #terminal-output,
#root.term-collapsed #terminal-inputrow { display: none; }

/* Activity Bar */
#activitybar {
  grid-row: 1 / 4;
  grid-column: 1;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  z-index: 10;
}
.ab-group { display: flex; flex-direction: column; gap: 4px; }
.ab-btn {
  background: none;
  border: none;
  color: var(--fg-dim);
  font-size: 18px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  border-radius: var(--radius);
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ab-btn:hover { color: var(--fg); background: var(--bg3); }
.ab-btn.active { color: #fff; background: var(--accent); box-shadow: 0 0 10px var(--accent-glow); }

/* Sidebar */
#sidebar {
  grid-row: 1 / 4;
  grid-column: 2;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.sb-panel { display: flex; flex-direction: column; height: 100%; }
.sb-header {
  padding: 10px 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.8px;
  color: var(--fg-dim);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
}
.sb-actions { display: flex; gap: 4px; }
.sb-actions button {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--fg);
  cursor: pointer;
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 4px;
  transition: 0.15s;
}
.sb-actions button:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.project-label {
  padding: 8px 12px;
  font-size: 11px;
  font-family: monospace;
  color: var(--blue);
  background: rgba(56, 189, 248, 0.08);
  border-bottom: 1px solid var(--border);
  word-break: break-all;
}
.sb-body { padding: 12px; overflow-y: auto; flex: 1; }

/* Tree */
#tree { flex: 1; overflow-y: auto; padding: 4px 0; font-size: 12.5px; user-select: none; }
.tree-node { white-space: nowrap; }
.tree-row {
  display: flex;
  align-items: center;
  padding: 3px 8px;
  cursor: pointer;
  gap: 6px;
  border-radius: 4px;
  margin: 1px 4px;
}
.tree-row:hover { background: var(--bg3); }
.tree-row.selected { background: var(--accent); color: #fff; }
.tree-row .arrow { width: 14px; color: var(--fg-dim); display: inline-block; text-align: center; font-size: 10px; }
.tree-row .icon { font-size: 13px; }
.tree-row .name { overflow: hidden; text-overflow: ellipsis; }
.tree-children { margin-left: 16px; }
.tree-row.dirty::after { content: "\25cf"; color: var(--yellow); font-size: 10px; margin-left: auto; }

/* Main Editor */
#main {
  grid-row: 1 / 2;
  grid-column: 3;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--bg);
}
#tabbar {
  display: flex;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  flex-shrink: 0;
  min-height: 35px;
}
.tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-right: 1px solid var(--border);
  cursor: pointer;
  color: var(--fg-dim);
  max-width: 220px;
  white-space: nowrap;
  font-size: 12.5px;
  transition: background 0.1s;
}
.tab:hover { background: var(--bg3); color: var(--fg); }
.tab.active { background: var(--bg); color: var(--fg); border-bottom: 2px solid var(--accent); font-weight: 500; }
.tab-close { color: var(--fg-dim); border-radius: 3px; padding: 0 4px; line-height: 1; }
.tab-close:hover { background: var(--red); color: #fff; }
.tab.dirty .tab-name::after { content: "\25cf"; color: var(--yellow); margin-left: 4px; }
#editorwrap { flex: 1; position: relative; min-height: 0; }
#editor { height: 100%; }
#editor .CodeMirror { height: 100%; font-family: "Cascadia Code", Consolas, "Fira Code", monospace; font-size: 13px; }
#diffview { position: absolute; inset: 0; overflow: auto; background: var(--bg); padding: 12px; }

/* Chat Panel */
#chatpanel {
  grid-row: 1 / 3;
  grid-column: 4;
  background: var(--bg2);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}
#chat-header {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg2);
}
.chat-header-title { display: flex; align-items: center; gap: 8px; }
.agent-badge {
  background: var(--accent);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}
#chat-quick-model {
  background: var(--bg3);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 6px;
  font-size: 11px;
}
.chat-header-actions button {
  background: none;
  border: none;
  color: var(--fg-dim);
  cursor: pointer;
  font-size: 14px;
  padding: 2px 4px;
}
.chat-header-actions button:hover { color: var(--fg); }

/* Live Status Banner */
.chat-status-banner {
  background: var(--bg3);
  border-bottom: 1px solid var(--accent);
  padding: 6px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11.5px;
  color: var(--blue);
}
.spinner-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 8px var(--blue);
  animation: pulse 1.2s infinite ease-in-out;
}
@keyframes pulse { 0%, 100% { opacity: 0.3; transform: scale(0.8); } 50% { opacity: 1; transform: scale(1.2); } }

.chat-hint {
  padding: 10px 12px;
  font-size: 11.5px;
  color: var(--fg-dim);
  background: rgba(39, 39, 48, 0.6);
  border-bottom: 1px solid var(--border);
}
#chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.msg {
  border-radius: var(--radius);
  padding: 10px 12px;
  line-height: 1.5;
  word-break: break-word;
  font-size: 12.5px;
}
.msg.user { background: #1e3a8a; color: #fff; align-self: flex-end; max-width: 90%; border-bottom-right-radius: 2px; }
.msg.assistant { background: var(--bg3); border: 1px solid var(--border); align-self: stretch; }
.msg.error { background: var(--red-bg); border: 1px solid var(--red); color: #fca5a5; }
.msg.tool-event { background: var(--bg3); border: 1px solid var(--border); font-family: monospace; font-size: 11.5px; }
.msg .tool-head { color: var(--teal); font-weight: 700; display: flex; justify-content: space-between; margin-bottom: 4px; }
.msg .tool-ok { color: var(--green); }
.msg .tool-fail { color: var(--red); }
.msg .tool-params { color: var(--fg-dim); font-size: 11px; margin-top: 4px; }

/* Diff inside tool event */
.diffblock { margin-top: 8px; background: #0f172a; border: 1px solid var(--border); border-radius: 4px; overflow: hidden; }
.diff-hdr { font-size: 11px; color: var(--fg-dim); background: var(--bg4); padding: 4px 8px; }
.diffblock pre { margin: 0; padding: 8px; max-height: 220px; overflow: auto; font-size: 11px; }
.diff-add { background: rgba(34, 197, 94, 0.2); color: #86efac; }
.diff-del { background: rgba(239, 68, 68, 0.2); color: #fca5a5; }
.diff-actions { display: flex; gap: 8px; padding: 6px 8px; background: var(--bg3); }
.btn-accept, .btn-reject { padding: 4px 12px; border: none; border-radius: 4px; font-size: 11.5px; font-weight: 600; cursor: pointer; }
.btn-accept { background: var(--green); color: #fff; }
.btn-reject { background: var(--red); color: #fff; }

#chat-inputrow {
  border-top: 1px solid var(--border);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--bg2);
}
#chat-input {
  width: 100%;
  height: 80px;
  min-height: 50px;
  max-height: 240px;
  background: var(--bg3);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 10px;
  font: inherit;
  resize: vertical;
}
#chat-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-glow); }
.chat-btns { display: flex; gap: 8px; }
.chat-btns button {
  flex: 1;
  padding: 8px 14px;
  border: none;
  border-radius: 4px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: 0.15s;
}
.chat-btns button:hover { background: var(--accent-hover); }
#chat-stop { background: var(--red); }
#chat-continue { background: var(--teal); }

/* Terminal Panel */
#terminalpanel {
  grid-row: 2;
  grid-column: 3;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
}
#terminal-tabs {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
  padding: 0 4px;
}
.term-tabs-list { display: flex; overflow-x: auto; }
.term-tab {
  padding: 5px 12px;
  border-right: 1px solid var(--border);
  cursor: pointer;
  color: var(--fg-dim);
  font-size: 11.5px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.term-tab.active { background: var(--bg); color: var(--fg); border-top: 2px solid var(--accent); }
.term-tab .term-close:hover { color: var(--red); }
.term-new, .term-collapse-btn {
  background: none;
  border: none;
  color: var(--fg-dim);
  cursor: pointer;
  padding: 4px 8px;
  font-size: 14px;
}
.term-new:hover, .term-collapse-btn:hover { color: var(--fg); }
.term-new { margin-left: auto; }
#terminal-output {
  flex: 1;
  overflow-y: auto;
  font-family: Consolas, "Cascadia Code", monospace;
  font-size: 12px;
  padding: 8px 12px;
  white-space: pre-wrap;
  background: #09090b;
}
.term-line-system { color: var(--teal); }
.term-line-input { color: #fff; font-weight: 600; }
.term-line-output { color: #d4d4d8; }
.term-line-err { color: #f87171; }
#terminal-inputrow {
  display: flex;
  gap: 6px;
  padding: 6px 8px;
  border-top: 1px solid var(--border);
  background: var(--bg2);
}
#terminal-input {
  flex: 1;
  background: var(--bg3);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 8px;
  font-family: monospace;
}
#terminal-shell, #terminal-inputrow button {
  background: var(--bg3);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 10px;
  cursor: pointer;
}
#terminal-inputrow button:hover { background: var(--accent); color: #fff; }
#terminal-kill { background: var(--red-bg) !important; color: var(--red) !important; border-color: var(--red) !important; }

/* Status Bar */
#statusbar {
  grid-row: 3;
  grid-column: 1 / 5;
  background: #1e1e24;
  border-top: 1px solid var(--border);
  color: var(--fg-dim);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 12px;
  font-size: 11px;
}
.status-badge { color: var(--blue); font-weight: 600; }
.status-btn { cursor: pointer; color: var(--fg-dim); }
.status-btn:hover { color: var(--fg); }
#status-msg { margin-left: auto; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Developer Debug Log */
.debug-body { display: flex; flex-direction: column; gap: 8px; }
.debug-toolbar { display: flex; justify-content: space-between; align-items: center; font-size: 11px; color: var(--fg-dim); }
.debug-log {
  flex: 1;
  overflow-y: auto;
  background: #09090b;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px;
  font-family: monospace;
  font-size: 11px;
  max-height: calc(100vh - 120px);
}
.debug-row { padding: 4px 0; border-bottom: 1px solid rgba(255,255,255,0.06); display: flex; gap: 8px; }
.debug-time { color: var(--fg-dim); }
.debug-tag { font-weight: 700; padding: 0 4px; border-radius: 2px; }
.debug-tag.ai { background: #1e3a8a; color: #93c5fd; }
.debug-tag.tool { background: #064e3b; color: #6ee7b7; }
.debug-tag.permission { background: #78350f; color: #fde68a; }
.debug-tag.error { background: #7f1d1d; color: #fca5a5; }
.debug-msg { flex: 1; word-break: break-all; }

/* Permission Modal */
#modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
#permission-modal {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  width: min(600px, 92vw);
  max-height: 85vh;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.perm-title { font-size: 16px; font-weight: 700; color: var(--yellow); }
.perm-sub { font-size: 12px; color: var(--fg-dim); }
.perm-summary { font-size: 13px; font-weight: 600; color: var(--fg); padding: 8px 12px; background: var(--bg3); border-radius: 4px; }
.perm-detail { background: #09090b; border: 1px solid var(--border); border-radius: 4px; padding: 10px; font-family: monospace; font-size: 11.5px; max-height: 240px; overflow: auto; }
#perm-buttons { display: flex; gap: 8px; flex-wrap: wrap; }
#perm-buttons button { flex: 1; min-width: 110px; padding: 8px 12px; border: none; border-radius: 4px; font-weight: 600; cursor: pointer; }
.btn-perm-allow { background: var(--accent); color: #fff; }
.btn-perm-task { background: var(--teal); color: #fff; }
.btn-perm-always { background: var(--green); color: #fff; }
.btn-perm-deny { background: var(--red); color: #fff; }
.btn-perm-cancel { background: var(--bg4); color: var(--fg); border: 1px solid var(--border); padding: 6px 12px; border-radius: 4px; cursor: pointer; align-self: flex-end; }

/* Provider cards in Settings */
.provider-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(100px, 1fr)); gap: 8px; margin: 8px 0; }
.provider-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--fg);
  border-radius: var(--radius);
  padding: 8px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  cursor: pointer;
  transition: 0.15s;
}
.provider-card:hover { border-color: var(--accent); }
.provider-card.active { border-color: var(--accent); background: var(--bg4); }
.provider-card .prov-action { font-size: 10.5px; color: var(--blue); margin-top: 4px; }
.provider-config-box { background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; margin-top: 10px; }
.prov-box { display: flex; flex-direction: column; gap: 6px; }
.set-section { border-top: 1px solid var(--border); padding: 14px 0; }
.set-section-title { font-size: 11px; font-weight: 700; letter-spacing: 1px; color: var(--fg-dim); margin-bottom: 6px; }
.lbl { font-size: 11px; color: var(--fg-dim); margin-top: 6px; }
.sb-body input, .sb-body select {
  width: 100%;
  background: var(--bg3);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 6px 8px;
  margin-top: 3px;
  font: inherit;
}
.sb-body button {
  margin-top: 8px;
  width: 100%;
  padding: 7px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
}
.sb-body button:hover { background: var(--accent-hover); }

/* Context Menu */
#contextmenu {
  position: fixed;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 0;
  min-width: 180px;
  z-index: 500;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}
.cm-item { padding: 6px 14px; cursor: pointer; font-size: 12.5px; }
.cm-item:hover { background: var(--accent); color: #fff; }
.cm-sep { height: 1px; background: var(--border); margin: 4px 0; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }