/* ═══════════════════════════════════════════════════════════
   视觉引导工业机器人智能操控系统 — 样式 v4
   工业深色主题，模式切换架构
   ═══════════════════════════════════════════════════════════ */

:root {
  --bg-dark: #0a0e14;
  --bg-panel: #131820;
  --bg-input: #1c2333;
  --border: #2a3344;
  --border-active: #3d5a80;
  --text: #e2e8f0;
  --text-muted: #7b8ba3;
  --accent: #4da6ff;
  --accent-green: #2ea043;
  --accent-orange: #d2991d;
  --accent-red: #f85149;
  --accent-purple: #a371f7;
  --accent-yellow: #e3b341;
  --radius: 6px;
  --font: -apple-system, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'Cascadia Code', 'JetBrains Mono', 'Consolas', monospace;
}

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

body {
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--text);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-size: 13px;
}

/* ═══════════════════════ Top Bar ═══════════════════════ */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 16px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  height: 42px;
  flex-shrink: 0;
  z-index: 10;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand .logo-icon { font-size: 22px; }
.brand h1 { font-size: 14px; font-weight: 600; letter-spacing: 0.3px; background: linear-gradient(135deg, var(--accent), var(--accent-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.service-status { display: flex; align-items: center; gap: 8px; }
.status-dot {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--border); transition: all 0.3s;
  font-size: 14px; line-height: 22px; text-align: center; display: inline-block;
}
.status-dot.connected { background: rgba(46, 160, 67, 0.2); box-shadow: 0 0 6px rgba(46, 160, 67, 0.5); }
.status-dot.disconnected { background: rgba(248, 81, 73, 0.2); box-shadow: 0 0 6px rgba(248, 81, 73, 0.5); }
.status-dot.warning { background: rgba(210, 153, 29, 0.2); box-shadow: 0 0 6px rgba(210, 153, 29, 0.5); }

/* ═══════════════════════ Main Grid ═══════════════════════ */
.main-grid {
  display: flex;
  flex: 1;
  overflow: hidden;
  gap: 1px;
  background: var(--border);
}

.panel {
  display: flex;
  flex-direction: column;
  background: var(--bg-panel);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  min-height: 32px;
}
.panel-title { font-size: 12px; font-weight: 600; }
.panel-subtitle { font-size: 10px; color: var(--text-muted); }

/* ── 3D Panel ── */
.panel-3d { flex: 1; min-width: 0; position: relative; }
.panel-3d .panel-header { background: var(--bg-panel); }
.panel-actions { display: flex; gap: 4px; }
.panel-actions button {
  padding: 3px 8px; background: var(--bg-input); color: var(--text-muted);
  border: 1px solid var(--border); border-radius: 3px; font-size: 11px;
  cursor: pointer; transition: all 0.15s;
}
.panel-actions button:hover { color: var(--text); border-color: var(--border-active); }

#canvas-container {
  flex: 1; position: relative;
  background: radial-gradient(ellipse at center, #151d2b 0%, #0a0e14 70%);
  cursor: grab;
}
#canvas-container:active { cursor: grabbing; }
#robot-canvas { width: 100%; height: 100%; display: block; }

.overlay-joint-display {
  position: absolute; bottom: 24px; left: 8px;
  font-family: var(--font-mono); font-size: 10px; color: var(--text-muted);
  background: rgba(0,0,0,0.6); padding: 3px 8px; border-radius: 3px;
  pointer-events: none;
}

.overlay-scene-health {
  position: absolute; bottom: 4px; left: 8px;
  font-family: var(--font-mono); font-size: 10px; color: var(--accent-green);
  background: rgba(0,0,0,0.6); padding: 2px 8px; border-radius: 3px;
  pointer-events: none;
}
.overlay-scene-health.error { color: var(--accent-red); }
.overlay-scene-health.warning { color: var(--accent-orange); }

/* ── Control Panel ── */
.panel-control { width: 400px; flex-shrink: 0; display: flex; flex-direction: column; }
.panel-control .panel-header { border-bottom: none; }

/* Mode Tabs */
.mode-tabs {
  display: flex; gap: 2px; padding: 0 8px 6px;
  border-bottom: 1px solid var(--border);
}
.mode-tab {
  flex: 1; padding: 5px 8px; background: var(--bg-input); color: var(--text-muted);
  border: 1px solid var(--border); border-radius: 4px 4px 0 0; font-size: 11px;
  cursor: pointer; transition: all 0.15s; text-align: center;
  border-bottom: none;
}
.mode-tab.active {
  color: var(--accent); border-color: var(--accent);
  background: rgba(77, 166, 255, 0.08);
  box-shadow: 0 -1px 4px rgba(77, 166, 255, 0.15);
}
.mode-tab:hover { color: var(--text); }

.mode-panel {
  flex: 1; display: flex; flex-direction: column;
  overflow: hidden;
}

/* Quick Actions */
.quick-actions {
  display: flex; gap: 4px; padding: 6px 12px;
  border-bottom: 1px solid var(--border);
}
.quick-actions button {
  padding: 4px 10px; background: var(--bg-input); color: var(--accent);
  border: 1px solid var(--border); border-radius: 12px; font-size: 11px;
  cursor: pointer; white-space: nowrap; transition: all 0.2s;
}
.quick-actions button:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* Chat Log */
.chat-log {
  flex: 1; overflow-y: auto; padding: 8px 12px;
  display: flex; flex-direction: column; gap: 6px;
}
.chat-log::-webkit-scrollbar { width: 4px; }
.chat-log::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.message {
  padding: 8px 12px; border-radius: var(--radius);
  font-size: 12px; line-height: 1.5;
  animation: fadeIn 0.25s ease;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(3px); } to { opacity: 1; transform: translateY(0); } }

.message.user {
  background: linear-gradient(135deg, #1a3a5c, #1a2a4a);
  border: 1px solid var(--accent);
  align-self: flex-end; max-width: 88%;
}
.message.agent { background: var(--bg-input); border: 1px solid var(--border); align-self: flex-start; max-width: 92%; }
.message.system { background: transparent; border: 1px dashed var(--border); color: var(--text-muted); font-size: 11px; }
.message.tool_call { background: rgba(163, 113, 247, 0.08); border-left: 3px solid var(--accent-purple); font-family: var(--font-mono); font-size: 11px; }
.message.tool_result { background: rgba(46, 160, 67, 0.06); border-left: 3px solid var(--accent-green); font-family: var(--font-mono); font-size: 10px; max-height: 150px; overflow-y: auto; }
.message.final { background: rgba(77, 166, 255, 0.08); border-left: 3px solid var(--accent); }
.message.error { background: rgba(248, 81, 73, 0.08); border-left: 3px solid var(--accent-red); color: var(--accent-red); }
.message.thinking { background: rgba(210, 153, 29, 0.06); border-left: 3px solid var(--accent-orange); font-style: italic; font-size: 11px; }
.msg-content p { margin: 3px 0; }
.msg-content ul { padding-left: 18px; }
.msg-content pre {
  background: rgba(0,0,0,0.3); padding: 6px 8px; border-radius: 4px;
  font-size: 10px; overflow-x: auto; margin: 4px 0;
}

.typing-indicator { display: flex; gap: 4px; padding: 6px 0; }
.typing-indicator span {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--text-muted);
  animation: bounce 1.4s infinite ease-in-out both;
}
.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }
@keyframes bounce { 0%, 80%, 100% { transform: scale(0); } 40% { transform: scale(1); } }

/* Input Area */
.input-area { padding: 8px 12px; border-top: 1px solid var(--border); background: var(--bg-dark); }
#user-input {
  width: 100%; padding: 8px 12px; background: var(--bg-input); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius);
  font-family: var(--font); font-size: 12px; resize: none; outline: none;
  transition: border-color 0.2s;
}
#user-input:focus { border-color: var(--accent); }
#user-input::placeholder { color: var(--text-muted); }

.input-actions { display: flex; gap: 6px; margin-top: 6px; }
.input-actions button {
  padding: 6px 16px; border: none; border-radius: var(--radius);
  font-size: 12px; font-weight: 600; cursor: pointer; transition: all 0.2s;
}
#send-btn { background: var(--accent); color: #fff; }
#send-btn:hover { background: #3d8fd9; }
#send-btn:disabled { opacity: 0.5; cursor: not-allowed; }
#stop-btn { background: var(--accent-red); color: #fff; }
#stop-btn:hover { background: #d63d34; }

/* Progress */
.progress-bar { height: 3px; background: var(--border); }
.progress-fill { height: 100%; background: var(--accent); width: 0; transition: width 0.3s; }

/* ═══════════════════════ Jog Panel ═══════════════════════ */
.jog-content {
  flex: 1; display: flex; flex-direction: column; padding: 4px 8px;
  overflow-y: auto; gap: 2px;
}
.jog-mode-tabs {
  display: flex; gap: 2px; margin-bottom: 4px;
}
.jog-mode-btn {
  flex: 1; padding: 3px 6px; background: var(--bg-input); color: var(--text-muted);
  border: 1px solid var(--border); border-radius: 3px; font-size: 10px;
  cursor: pointer; transition: all 0.15s; text-align: center;
}
.jog-mode-btn.active { color: var(--accent); border-color: var(--accent); background: rgba(77, 166, 255, 0.1); }
.jog-mode-btn:hover { color: var(--text); border-color: var(--border-active); }

.jog-subpanel { display: flex; flex-direction: column; gap: 1px; }
.jog-axis-row {
  display: flex; align-items: center; gap: 6px;
  padding: 2px 4px; border-radius: 3px;
}
.jog-axis-row:hover { background: rgba(255,255,255,0.02); }
.jog-axis-label {
  width: 24px; font-family: var(--font-mono); font-size: 11px;
  font-weight: 600; color: var(--accent-purple); text-align: center;
}
.jog-axis-val {
  width: 48px; font-family: var(--font-mono); font-size: 10px;
  color: var(--accent-green); text-align: center;
}
.jog-btn {
  width: 28px; height: 24px; padding: 0; border: 1px solid var(--border);
  border-radius: 3px; background: var(--bg-input); color: var(--text-muted);
  font-size: 14px; font-weight: 600; cursor: pointer; line-height: 1;
  transition: all 0.1s; display: flex; align-items: center; justify-content: center;
}
.jog-btn:hover { color: var(--text); border-color: var(--border-active); }
.jog-btn:active { background: var(--accent); color: #fff; transform: scale(0.92); }
.jog-plus { color: var(--accent-green); }
.jog-minus { color: var(--accent-orange); }

.jog-speed-row {
  display: flex; align-items: center; gap: 6px; padding: 3px 6px; margin-top: 2px;
}
.jog-speed-label { font-size: 10px; color: var(--text-muted); width: 28px; }
.jog-step-select {
  flex: 1; padding: 2px 4px; background: var(--bg-input); color: var(--text);
  border: 1px solid var(--border); border-radius: 3px; font-size: 10px;
  font-family: var(--font-mono); outline: none;
}
.jog-speed-slider { flex: 1; accent-color: var(--accent); height: 4px; }
.jog-speed-val {
  width: 32px; font-family: var(--font-mono); font-size: 10px;
  color: var(--accent); text-align: right;
}

/* Teach */
.teach-points-list {
  flex: 1; min-height: 60px; overflow-y: auto; padding: 4px;
  font-family: var(--font-mono); font-size: 10px;
}
.teach-empty { color: var(--text-muted); text-align: center; padding: 16px; display: block; }
.teach-point-item {
  display: flex; align-items: center; gap: 4px;
  padding: 3px 6px; margin-bottom: 2px;
  background: var(--bg-input); border-radius: 3px; cursor: pointer;
  transition: all 0.15s; border-left: 3px solid var(--accent-purple);
}
.teach-point-item:hover { background: rgba(77, 166, 255, 0.1); }
.teach-point-item .tp-name { color: var(--accent-purple); font-weight: 600; }
.teach-point-item .tp-pos { color: var(--text-muted); margin-left: auto; }
.teach-actions { display: flex; gap: 3px; padding: 4px 0; }
.teach-btn {
  flex: 1; padding: 3px 6px; background: var(--bg-input); color: var(--text-muted);
  border: 1px solid var(--border); border-radius: 3px; font-size: 10px;
  cursor: pointer; transition: all 0.15s; text-align: center;
}
.teach-btn:hover { color: var(--text); border-color: var(--accent); }

/* ═══════════════════════ Program Panel ═══════════════════════ */
.program-container {
  flex: 1; overflow: auto; padding: 4px 10px;
  background: rgba(0,0,0,0.3);
}
.program-container::-webkit-scrollbar { width: 4px; }
.program-container::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
.program-code {
  font-family: var(--font-mono); font-size: 10px; line-height: 1.55;
  color: var(--accent-green); white-space: pre; margin: 0; tab-size: 2;
}

/* ═══════════════════════ Bottom Panels ═══════════════════════ */
.bottom-panels {
  display: flex; gap: 1px; background: var(--border);
  height: 220px; flex-shrink: 0;
}
.bottom-panels > .panel { flex: 1; min-width: 0; overflow: hidden; }

/* ── Vision Panel ── */
.panel-vision { flex: 1.2; }
.vision-container {
  flex: 1; display: flex; align-items: center; justify-content: center;
  position: relative; background: #000;
}
#vision-canvas { max-width: 100%; max-height: 100%; object-fit: contain; display: none; }
.vision-placeholder {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 12px;
}

/* ── Joint Panel ── */
.panel-joints { flex: 0.8; }
.joint-table {
  width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 11px;
}
.joint-table th, .joint-table td {
  padding: 3px 8px; text-align: center; border-bottom: 1px solid rgba(42, 51, 68, 0.5);
}
.joint-table th { color: var(--text-muted); font-weight: 500; font-size: 10px; }
.joint-table td { color: var(--accent-yellow); }

/* ── TCP Panel ── */
.panel-tcp { flex: 0.8; }
.tcp-table {
  width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 11px;
}
.tcp-table td {
  padding: 3px 8px; border-bottom: 1px solid rgba(42, 51, 68, 0.5);
}
.tcp-table td:first-child { color: var(--text-muted); width: 30px; }
.tcp-table td:nth-child(2) { color: var(--accent-green); text-align: right; }
.tcp-table td:last-child { color: var(--text-muted); font-size: 10px; }
.gripper-row td:nth-child(2) { color: var(--accent-orange); }

/* ── Coordinate Info (Vision Panel) ── */
.coord-info {
  padding: 4px 8px; font-size: 10px; color: var(--accent-green);
  font-family: var(--font-mono); border-top: 1px solid var(--border);
  background: rgba(0,0,0,0.3); min-height: 20px; line-height: 1.4;
}
.coord-info .muted { color: var(--text-muted); }

/* ═══════════════════════ Responsive ═══════════════════════ */
@media (max-width: 1100px) {
  .main-grid { flex-direction: column; }
  .panel-3d { height: 45vh; }
  .panel-control { width: 100%; max-height: 35vh; }
  .bottom-panels { flex-wrap: wrap; height: auto; }
  .bottom-panels > .panel { flex: 1 1 45%; min-height: 150px; }
}
@media (max-width: 700px) {
  .bottom-panels > .panel { flex: 1 1 100%; min-height: 120px; }
  .brand h1 { font-size: 11px; }
}