/* ==============================================================================
   Humanoid-v5 PPO AI Training & 3D Simulation Studio - Stylesheet
   Theme: Modern Cyber-Robotics Dark Glassmorphism
   ============================================================================== */

:root {
  --bg-primary: #0a0d14;
  --bg-secondary: #111622;
  --bg-surface: rgba(18, 24, 38, 0.75);
  --bg-surface-hover: rgba(28, 36, 56, 0.85);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-glow: rgba(0, 240, 255, 0.15);

  --text-primary: #f0f4fc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-cyan: #00f0ff;
  --accent-purple: #a855f7;
  --accent-emerald: #10b981;
  --accent-warning: #f59e0b;
  --accent-danger: #ef4444;
  --accent-gold: #fbbf24;

  --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --header-height: 68px;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body.dark-theme {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(at 0% 0%, rgba(0, 240, 255, 0.06) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(168, 85, 247, 0.06) 0px, transparent 50%),
    radial-gradient(at 50% 100%, rgba(16, 185, 129, 0.04) 0px, transparent 50%);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Glass Card Common */
.glass-card {
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  transition: var(--transition-smooth);
}

/* Header */
.app-header {
  height: var(--header-height);
  background: rgba(10, 13, 20, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
}

.logo-title {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-title .badge {
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  background: rgba(0, 240, 255, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 240, 255, 0.3);
  border-radius: 20px;
  letter-spacing: 1px;
}

.logo-sub {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Header Metric Pills */
.header-metrics {
  display: flex;
  align-items: center;
  gap: 12px;
}

.metric-pill {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 6px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}

.metric-pill .label {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 10px;
  letter-spacing: 0.5px;
}

.metric-pill .value {
  font-family: var(--font-mono);
  font-weight: 700;
}

/* Buttons */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn {
  font-family: var(--font-main);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-smooth);
}

.btn-primary {
  background: linear-gradient(135deg, #00f0ff 0%, #0284c7 100%);
  color: #041426;
  box-shadow: 0 4px 14px rgba(0, 240, 255, 0.3);
}
.btn-primary:hover {
  filter: brightness(1.15);
  transform: translateY(-1px);
}

.btn-success {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}
.btn-success:hover {
  filter: brightness(1.15);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--glass-border);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.btn-outline-warning {
  background: transparent;
  color: var(--accent-warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
}
.btn-outline-warning:hover {
  background: rgba(245, 158, 11, 0.1);
}

.btn-outline-info {
  background: transparent;
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 240, 255, 0.3);
}
.btn-outline-info:hover {
  background: rgba(0, 240, 255, 0.1);
}

/* Workspace Grid Layout */
.workspace-grid {
  display: grid;
  grid-template-columns: 310px 1fr 390px;
  gap: 16px;
  padding: 16px;
  height: calc(100vh - var(--header-height));
  overflow: hidden;
}

/* Sidebars Common */
.sidebar-left, .sidebar-right, .simulation-section {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.card-header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-header i {
  color: var(--accent-cyan);
  font-size: 16px;
}

.card-header h2 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.3px;
}

.sub-header {
  padding: 10px 0;
  margin-top: 10px;
  border-bottom: none;
}
.sub-header h3 {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.sidebar-content {
  padding: 16px;
  overflow-y: auto;
  flex: 1;
}

.divider {
  border: none;
  border-top: 1px solid var(--glass-border);
  margin: 16px 0;
}

/* Settings Controls */
.setting-group {
  margin-bottom: 14px;
}

.setting-group label, .label-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.setting-group input[type="range"] {
  width: 100%;
  appearance: none;
  background: rgba(255, 255, 255, 0.1);
  height: 6px;
  border-radius: 3px;
  outline: none;
}

.setting-group input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-cyan);
  cursor: pointer;
  box-shadow: 0 0 8px var(--accent-cyan);
}

.speed-selector {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.btn-chip {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  padding: 6px 0;
  font-size: 11px;
  font-weight: 700;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: var(--transition-smooth);
}
.btn-chip:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}
.btn-chip.active {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* Neural Visualizer */
.neural-visualizer {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 10px;
}

.nn-layer-desc {
  display: flex;
  justify-content: space-between;
  font-size: 9px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin-bottom: 6px;
}

#nnCanvas {
  width: 100%;
  height: 130px;
  display: block;
}

.nn-actions-bar {
  display: flex;
  gap: 3px;
  margin-top: 8px;
  height: 24px;
}

.action-bar-col {
  flex: 1;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}

.action-bar-fill {
  position: absolute;
  bottom: 50%;
  left: 0;
  right: 0;
  height: 0%;
  background: var(--accent-cyan);
  transition: height 0.05s ease;
}

/* Perturbation Controls */
.perturbation-box {
  margin-top: 14px;
}

.btn-group-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.btn-sm {
  padding: 6px 10px;
  font-size: 11px;
}

/* Center Simulation Section */
.simulation-section {
  position: relative;
}

.sim-header {
  padding: 12px 18px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sim-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sim-title h2 {
  font-size: 14px;
  font-weight: 700;
}

.badge-pulse {
  font-size: 10px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 5px;
}

.badge-pulse::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--accent-emerald);
}

.sim-view-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.camera-modes {
  display: flex;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-sm);
  padding: 2px;
  border: 1px solid var(--glass-border);
}

.btn-view {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: var(--transition-smooth);
}
.btn-view:hover {
  color: var(--text-primary);
}
.btn-view.active {
  background: rgba(0, 240, 255, 0.2);
  color: var(--accent-cyan);
}

.btn-icon {
  width: 30px;
  height: 30px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}
.btn-icon:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

/* 3D Canvas Viewport */
.canvas-wrapper {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: #06080d;
}

#canvas3dContainer canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* HUD Overlay */
.sim-hud {
  position: absolute;
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sim-hud.top-left {
  top: 14px;
  left: 14px;
}
.sim-hud.top-right {
  top: 14px;
  right: 14px;
  text-align: right;
}

.hud-item {
  background: rgba(10, 14, 24, 0.75);
  backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  padding: 4px 10px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
}

.hud-label {
  color: var(--text-muted);
  font-size: 10px;
}
.hud-value {
  font-weight: 700;
  color: var(--text-primary);
}

.fall-alert {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background: rgba(239, 68, 68, 0.9);
  backdrop-filter: blur(10px);
  color: #fff;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 0 30px rgba(239, 68, 68, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 20;
}
.fall-alert.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* Progress Track Bar */
.training-progressbar-container {
  padding: 10px 18px;
  background: rgba(10, 13, 20, 0.6);
  border-top: 1px solid var(--glass-border);
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.eta-text {
  color: var(--accent-cyan);
}

.progress-bar-bg {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  box-shadow: 0 0 10px var(--accent-cyan);
  transition: width 0.2s ease;
}

/* Right Charts Area */
.charts-scroll-area {
  padding: 14px;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.chart-box {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 12px;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.chart-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.chart-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.chart-container {
  position: relative;
  height: 110px;
  width: 100%;
}

/* Terminal Stream */
.terminal-box {
  background: #06090e;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 150px;
}

.terminal-header {
  background: rgba(255, 255, 255, 0.03);
  padding: 6px 10px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.term-dots {
  display: flex;
  gap: 5px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #10b981; }

.term-title {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.term-clear-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 11px;
}
.term-clear-btn:hover {
  color: var(--text-primary);
}

.terminal-body {
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.5;
  overflow-y: auto;
  flex: 1;
}

.log-line {
  margin-bottom: 2px;
  word-break: break-all;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-backdrop.show {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  width: 480px;
  max-width: 90vw;
  padding: 24px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.modal-title {
  display: flex;
  align-items: center;
  gap: 10px;
}
.modal-title h3 {
  font-size: 16px;
  font-weight: 700;
}

.btn-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
}
.btn-close:hover {
  color: var(--text-primary);
}

.modal-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
}

.zip-files-list {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 12px;
}

.zip-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
}
.zip-item span {
  color: var(--text-muted);
  font-size: 11px;
  font-family: var(--font-main);
}

.modal-footer {
  margin-top: 20px;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: rgba(17, 22, 34, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-left: 4px solid var(--accent-cyan);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  color: var(--text-primary);
  font-size: 13px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideIn 0.3s ease forwards;
}

.toast.success { border-left-color: var(--accent-emerald); }
.toast.warning { border-left-color: var(--accent-warning); }
.toast.danger { border-left-color: var(--accent-danger); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Utilities */
.text-cyan { color: var(--accent-cyan); }
.text-purple { color: var(--accent-purple); }
.text-emerald { color: var(--accent-emerald); }
.text-accent { color: var(--accent-cyan); }
.text-warning { color: var(--accent-warning); }
.text-danger { color: var(--accent-danger); }
.text-muted { color: var(--text-muted); }
.text-info { color: #38bdf8; }

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}