:root {
  --bg-0: #0d0d0f;
  --bg-1: #111114;
  --bg-2: #16161a;
  --bg-3: #1c1c21;
  --bg-4: #222228;
  --border: #2a2a32;
  --border-bright: #3a3a45;
  --text-0: #e8e8f0;
  --text-1: #a0a0b8;
  --text-2: #606078;
  --accent: #7c6af7;
  --accent-dim: #4a3fa0;
  --accent-glow: rgba(124,106,247,0.15);
  --green: #4ade80;
  --red: #f87171;
  --yellow: #fbbf24;
  --blue: #60a5fa;
  --orange: #fb923c;
  --cyan: #22d3ee;
  --font-mono: 'JetBrains Mono', monospace;
  --font-ui: 'Geist', sans-serif;
  --radius: 6px;
  --tab-h: 38px;
  --header-h: 44px;
  --input-h: 64px;
  --sidebar-w: 340px;
}

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

html, body, #root {
  height: 100%;
  width: 100%;
  overflow: hidden;
  background: var(--bg-0);
  color: var(--text-0);
  font-family: var(--font-ui);
  font-size: 13px;
}

/* ─── Scrollbar ─────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-2); }

/* ─── Layout ────────────────────────────────── */
.ide {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

/* ─── Header ────────────────────────────────── */
.header {
  height: var(--header-h);
  background: var(--bg-1);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 10px;
  flex-shrink: 0;
  z-index: 100;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 14px;
  color: var(--text-0);
  letter-spacing: 0.5px;
}

.header-logo-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.project-switcher {
  position: relative;
}

.project-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--text-0);
  padding: 5px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 12px;
  font-family: var(--font-ui);
  transition: all 0.15s;
}
.project-btn:hover { border-color: var(--accent); background: var(--bg-4); }

.project-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  background: var(--bg-2);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius);
  min-width: 200px;
  z-index: 200;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

.project-dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  cursor: pointer;
  color: var(--text-1);
  transition: all 0.1s;
}
.project-dropdown-item:hover { background: var(--bg-4); color: var(--text-0); }
.project-dropdown-item.active { color: var(--accent); }
.project-dropdown-divider { height: 1px; background: var(--border); margin: 4px 0; }

.new-project-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  color: var(--accent);
  cursor: pointer;
  transition: all 0.1s;
}
.new-project-btn:hover { background: var(--accent-glow); }

.header-spacer { flex: 1; }

.settings-btn {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-1);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s;
  font-size: 14px;
}
.settings-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ─── Main ──────────────────────────────────── */
.main {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

/* ─── Left Panel (Agent/Assistant) ──────────── */
.left-panel {
  width: var(--sidebar-w);
  min-width: 260px;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  background: var(--bg-1);
  flex-shrink: 0;
  position: relative;
}

.left-tabs {
  display: flex;
  align-items: center;
  background: var(--bg-0);
  border-bottom: 1px solid var(--border);
  padding: 0 4px;
  height: var(--tab-h);
  flex-shrink: 0;
  gap: 2px;
}

/* ─── Right Panel ───────────────────────────── */
.right-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.right-tabs {
  display: flex;
  align-items: center;
  background: var(--bg-0);
  border-bottom: 1px solid var(--border);
  padding: 0 4px;
  height: var(--tab-h);
  flex-shrink: 0;
  gap: 2px;
  overflow-x: auto;
}
.right-tabs::-webkit-scrollbar { height: 2px; }

/* ─── Tabs ──────────────────────────────────── */
.tab {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0 10px;
  height: 28px;
  border-radius: 5px;
  cursor: pointer;
  color: var(--text-2);
  font-size: 12px;
  white-space: nowrap;
  transition: all 0.1s;
  border: 1px solid transparent;
  position: relative;
  flex-shrink: 0;
}
.tab:hover { color: var(--text-1); background: var(--bg-3); }
.tab.active {
  color: var(--text-0);
  background: var(--bg-3);
  border-color: var(--border);
}
.tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px 2px 0 0;
}

.tab-close {
  width: 14px; height: 14px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 3px;
  opacity: 0;
  font-size: 10px;
  transition: all 0.1s;
}
.tab:hover .tab-close { opacity: 0.6; }
.tab-close:hover { opacity: 1 !important; background: var(--bg-4); }

.tab-add {
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 5px;
  cursor: pointer;
  color: var(--text-2);
  font-size: 16px;
  transition: all 0.1s;
  flex-shrink: 0;
  position: relative;
}
.tab-add:hover { color: var(--text-0); background: var(--bg-3); }

.tab-popup {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  background: var(--bg-2);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius);
  min-width: 160px;
  z-index: 300;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}
.tab-popup-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  cursor: pointer;
  color: var(--text-1);
  font-size: 12px;
  transition: all 0.1s;
}
.tab-popup-item:hover { background: var(--bg-4); color: var(--text-0); }

/* ─── Tab Content ───────────────────────────── */
.tab-content {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* ─── Agent Panel ───────────────────────────── */
.agent-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.agent-output {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 0;
}

.agent-msg {
  border-radius: var(--radius);
  padding: 8px 10px;
  font-size: 12px;
  line-height: 1.6;
  animation: fadeIn 0.2s ease;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; } }

.agent-msg.thinking {
  background: var(--bg-3);
  color: var(--text-1);
  border-left: 2px solid var(--accent);
  display: flex; align-items: center; gap: 6px;
}
.agent-msg.plan {
  background: var(--bg-3);
  border-left: 2px solid var(--blue);
  color: var(--text-0);
}
.agent-msg.analysis {
  background: var(--bg-3);
  border-left: 2px solid var(--cyan);
  color: var(--text-1);
}
.agent-msg.tool-start {
  background: var(--bg-3);
  border-left: 2px solid var(--yellow);
  color: var(--yellow);
  font-family: var(--font-mono);
  font-size: 11px;
}
.agent-msg.tool-result {
  background: var(--bg-2);
  color: var(--text-1);
  font-family: var(--font-mono);
  font-size: 11px;
  border-left: 2px solid var(--green);
}
.agent-msg.tool-result.error {
  border-left-color: var(--red);
  color: var(--red);
}
.agent-msg.debug {
  background: var(--bg-3);
  border-left: 2px solid var(--orange);
  color: var(--orange);
}
.agent-msg.final {
  background: var(--accent-glow);
  border: 1px solid var(--accent-dim);
  color: var(--text-0);
}
.agent-msg.done {
  color: var(--green);
  font-weight: 500;
  display: flex; align-items: center; gap: 6px;
}

.model-badge {
  display: inline-flex; align-items: center;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 10px;
  font-family: var(--font-mono);
  font-weight: 600;
  margin-bottom: 4px;
}
.model-badge.qwen { background: rgba(124,106,247,0.2); color: var(--accent); }
.model-badge.oss { background: rgba(96,165,250,0.2); color: var(--blue); }
.model-badge.llama { background: rgba(74,222,128,0.2); color: var(--green); }

.pulse {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 1s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

/* ─── Agent Input ───────────────────────────── */
.agent-input-wrap {
  padding: 10px;
  border-top: 1px solid var(--border);
  background: var(--bg-1);
  flex-shrink: 0;
}

.agent-input-box {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 10px;
  transition: border-color 0.15s;
}
.agent-input-box:focus-within { border-color: var(--accent); }

.agent-textarea {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-0);
  font-family: var(--font-ui);
  font-size: 13px;
  resize: none;
  min-height: 20px;
  max-height: 120px;
  line-height: 1.5;
}
.agent-textarea::placeholder { color: var(--text-2); }

.send-btn {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent);
  border: none;
  border-radius: 5px;
  cursor: pointer;
  color: white;
  font-size: 12px;
  transition: all 0.15s;
  flex-shrink: 0;
}
.send-btn:hover { background: #6a58e8; }
.send-btn:disabled { background: var(--bg-4); color: var(--text-2); cursor: not-allowed; }

.stop-btn {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(248,113,113,0.15);
  border: 1px solid rgba(248,113,113,0.3);
  border-radius: 5px;
  cursor: pointer;
  color: var(--red);
  font-size: 10px;
  transition: all 0.15s;
  flex-shrink: 0;
}
.stop-btn:hover { background: rgba(248,113,113,0.25); }

/* ─── Assistant Panel ───────────────────────── */
.assistant-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.assistant-model-select {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 6px;
  font-size: 11px; color: var(--text-2);
}
.model-select {
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--text-1);
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-family: var(--font-ui);
  cursor: pointer;
}
.model-select:focus { outline: none; border-color: var(--accent); }

.assistant-messages {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 0;
}

.chat-msg {
  display: flex;
  flex-direction: column;
  gap: 2px;
  animation: fadeIn 0.2s ease;
}
.chat-msg.user { align-items: flex-end; }
.chat-msg.assistant { align-items: flex-start; }

.chat-bubble {
  max-width: 90%;
  padding: 8px 11px;
  border-radius: 8px;
  font-size: 12px;
  line-height: 1.6;
}
.chat-msg.user .chat-bubble {
  background: var(--accent-dim);
  color: var(--text-0);
  border-bottom-right-radius: 2px;
}
.chat-msg.assistant .chat-bubble {
  background: var(--bg-3);
  color: var(--text-0);
  border-bottom-left-radius: 2px;
  border: 1px solid var(--border);
}

/* ─── Files Panel ───────────────────────────── */
.files-panel {
  display: flex;
  height: 100%;
  overflow: hidden;
}

.file-tree {
  width: 220px;
  min-width: 160px;
  border-right: 1px solid var(--border);
  overflow-y: auto;
  background: var(--bg-1);
  flex-shrink: 0;
}

.file-tree-header {
  padding: 8px 10px;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.file-tree-actions { display: flex; gap: 4px; }
.tree-action-btn {
  width: 20px; height: 20px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  color: var(--text-2);
  border-radius: 3px;
  font-size: 13px;
  transition: all 0.1s;
}
.tree-action-btn:hover { color: var(--text-0); background: var(--bg-4); }

.tree-item {
  display: flex; align-items: center;
  gap: 5px;
  padding: 4px 8px;
  cursor: pointer;
  color: var(--text-1);
  font-size: 12px;
  font-family: var(--font-mono);
  transition: all 0.1s;
  position: relative;
  user-select: none;
}
.tree-item:hover { background: var(--bg-3); color: var(--text-0); }
.tree-item.active { background: var(--accent-glow); color: var(--accent); }
.tree-item.modified::after {
  content: '●';
  position: absolute; right: 6px;
  color: var(--yellow);
  font-size: 8px;
}

.file-editor-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.editor-file-tabs {
  display: flex;
  align-items: center;
  background: var(--bg-0);
  border-bottom: 1px solid var(--border);
  height: 34px;
  overflow-x: auto;
  flex-shrink: 0;
}
.editor-file-tabs::-webkit-scrollbar { height: 2px; }

.editor-tab {
  display: flex; align-items: center; gap: 5px;
  padding: 0 10px;
  height: 34px;
  border-right: 1px solid var(--border);
  cursor: pointer;
  color: var(--text-2);
  font-size: 12px;
  font-family: var(--font-mono);
  white-space: nowrap;
  transition: all 0.1s;
  flex-shrink: 0;
}
.editor-tab:hover { background: var(--bg-3); color: var(--text-1); }
.editor-tab.active { background: var(--bg-2); color: var(--text-0); }
.editor-tab .tab-close { opacity: 0; }
.editor-tab:hover .tab-close { opacity: 0.6; }

.editor-container { flex: 1; overflow: hidden; }

/* ─── Console Panel ─────────────────────────── */
.console-panel {
  height: 100%;
  overflow-y: auto;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  background: var(--bg-0);
}

.console-line { display: flex; gap: 8px; }
.console-line.info { color: var(--text-1); }
.console-line.success { color: var(--green); }
.console-line.error { color: var(--red); }
.console-line.warning { color: var(--yellow); }
.console-line.tool { color: var(--cyan); }
.console-time {
  color: var(--text-2);
  flex-shrink: 0;
  font-size: 10px;
  padding-top: 1px;
}

/* ─── Shell Panel ───────────────────────────── */
.shell-panel {
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--bg-0);
  font-family: var(--font-mono);
  font-size: 12px;
}

.shell-output {
  flex: 1;
  overflow-y: auto;
  padding: 10px 12px;
  line-height: 1.7;
  color: var(--text-1);
}

.shell-line { white-space: pre-wrap; word-break: break-all; }
.shell-line.cmd { color: var(--green); }
.shell-line.err { color: var(--red); }

.shell-input-row {
  display: flex;
  align-items: center;
  padding: 6px 12px;
  border-top: 1px solid var(--border);
  gap: 4px;
  flex-shrink: 0;
}

.shell-prompt { color: var(--green); flex-shrink: 0; }
.shell-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-0);
  font-family: var(--font-mono);
  font-size: 12px;
  caret-color: var(--green);
}
.shell-input::placeholder { color: var(--text-2); }

/* ─── Preview Panel ─────────────────────────── */
.preview-panel {
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--bg-0);
}
.preview-bar {
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 6px;
  flex-shrink: 0;
}
.preview-url {
  flex: 1;
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--text-1);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-family: var(--font-mono);
}
.preview-url:focus { outline: none; border-color: var(--accent); }
.preview-iframe { flex: 1; border: none; background: white; }

/* ─── Context Menu ──────────────────────────── */
.context-menu {
  position: fixed;
  background: var(--bg-2);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius);
  min-width: 160px;
  z-index: 1000;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  animation: fadeIn 0.1s ease;
}
.context-item {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 12px;
  cursor: pointer;
  color: var(--text-1);
  font-size: 12px;
  transition: all 0.1s;
}
.context-item:hover { background: var(--bg-4); color: var(--text-0); }
.context-item.danger { color: var(--red); }
.context-item.danger:hover { background: rgba(248,113,113,0.1); }
.context-divider { height: 1px; background: var(--border); margin: 3px 0; }

/* ─── Modal ─────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 500;
  backdrop-filter: blur(4px);
  animation: fadeIn 0.15s ease;
}
.modal {
  background: var(--bg-2);
  border: 1px solid var(--border-bright);
  border-radius: 10px;
  padding: 24px;
  min-width: 320px;
  max-width: 440px;
  width: 90%;
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
}
.modal-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-0);
}
.modal-field { margin-bottom: 12px; }
.modal-label {
  display: block;
  font-size: 11px;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.modal-input {
  width: 100%;
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--text-0);
  padding: 8px 10px;
  border-radius: var(--radius);
  font-size: 13px;
  font-family: var(--font-ui);
  transition: border-color 0.15s;
}
.modal-input:focus { outline: none; border-color: var(--accent); }

.template-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.template-btn {
  padding: 10px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--text-1);
  border-radius: var(--radius);
  cursor: pointer;
  text-align: center;
  font-size: 12px;
  font-family: var(--font-ui);
  transition: all 0.15s;
}
.template-btn:hover { border-color: var(--accent); color: var(--text-0); }
.template-btn.selected { border-color: var(--accent); background: var(--accent-glow); color: var(--accent); }

.modal-actions {
  display: flex; justify-content: flex-end;
  gap: 8px; margin-top: 20px;
}
.btn {
  padding: 7px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
  font-family: var(--font-ui);
  border: none;
  transition: all 0.15s;
}
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: #6a58e8; }
.btn-secondary {
  background: var(--bg-3);
  color: var(--text-1);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg-4); color: var(--text-0); }

/* ─── Resizer ───────────────────────────────── */
.resizer {
  width: 4px;
  background: transparent;
  cursor: col-resize;
  flex-shrink: 0;
  transition: background 0.15s;
}
.resizer:hover { background: var(--accent); }

/* ─── Markdown ──────────────────────────────── */
.markdown h1, .markdown h2, .markdown h3 { margin: 8px 0 4px; font-weight: 600; }
.markdown p { margin: 4px 0; }
.markdown code {
  background: var(--bg-4);
  padding: 1px 5px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
}
.markdown pre {
  background: var(--bg-0);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  overflow-x: auto;
  margin: 6px 0;
  font-family: var(--font-mono);
  font-size: 11px;
}
.markdown pre code { background: none; padding: 0; }
.markdown ul, .markdown ol { padding-left: 16px; margin: 4px 0; }
.markdown li { margin: 2px 0; }

/* ─── Mobile ────────────────────────────────── */
@media (max-width: 768px) {
  :root { --sidebar-w: 100%; }

  .ide { height: 100dvh; }

  .main {
    flex-direction: column;
  }

  .left-panel {
    width: 100%;
    max-width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
    display: none;
  }
  .left-panel.mobile-active {
    display: flex;
    flex: 1;
  }

  .right-panel {
    display: none;
    flex: 1;
  }
  .right-panel.mobile-active {
    display: flex;
  }

  .mobile-nav {
    display: flex !important;
    height: 52px;
    background: var(--bg-1);
    border-top: 1px solid var(--border);
    flex-shrink: 0;
  }

  .mobile-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    cursor: pointer;
    color: var(--text-2);
    font-size: 10px;
    transition: all 0.15s;
    padding: 6px 0;
  }
  .mobile-nav-item.active { color: var(--accent); }
  .mobile-nav-item-icon { font-size: 18px; }

  .left-tabs { display: none; }
  .header { padding: 0 10px; }
}

.mobile-nav { display: none; }

/* ─── Empty State ───────────────────────────── */
.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-2);
  font-size: 13px;
}
.empty-icon { font-size: 32px; margin-bottom: 4px; }