/* ==========================================================================
   Python4Physics - Editor, Runner, Plots & Math Display Styles
   Fully Responsive - Zero Horizontal Scroll on Any Device
   ========================================================================== */

/* Workbench Layout with Collapsible Sidebar */
.workbench-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 1.5rem;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  align-items: start;
  transition: grid-template-columns 0.25s ease;
}

.workbench-layout.sidebar-collapsed {
  grid-template-columns: minmax(0, 1fr) !important;
}

.workbench-layout.sidebar-collapsed aside {
  display: none !important;
}

.workbench-sidebar {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  max-height: calc(100vh - 120px);
  position: sticky;
  top: 85px;
  overflow-y: auto;
  overflow-x: hidden;
  box-sizing: border-box;
}

/* Workspace Dual-Pane Layout */
.workspace-container {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1.25rem;
  margin-top: 1.5rem;
  margin-bottom: 3rem;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.workspace-pane {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0 !important;
  max-width: 100% !important;
  box-sizing: border-box;
  overflow: hidden;
}

/* Editor Header & Action Bar */
.editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  border-bottom: none;
  width: 100%;
  box-sizing: border-box;
}

.editor-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text);
  white-space: nowrap;
}

.editor-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

/* CodeMirror Custom Dark/Light Integration */
.editor-wrapper {
  border: 1px solid var(--card-border);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background: var(--code-bg);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.CodeMirror {
  font-family: 'JetBrains Mono', monospace !important;
  font-size: 14px !important;
  height: 480px !important;
  line-height: 1.6 !important;
  background: transparent !important;
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
}

.CodeMirror-lines {
  word-wrap: break-word !important;
}

.CodeMirror-wrap pre {
  word-break: break-all !important;
}

.CodeMirror-gutters {
  background: rgba(0, 0, 0, 0.2) !important;
  border-right: 1px solid var(--card-border) !important;
}

/* Tabbed Results Panel */
.tabs-header {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 0.5rem;
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
  width: 100%;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.45rem 0.85rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.88rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.tab-btn.active {
  color: var(--accent);
  background: rgba(6, 182, 212, 0.12);
  border-bottom: 2px solid var(--accent);
}

.tab-content {
  display: none;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.tab-content.active {
  display: block;
}

/* Output Console & Terminal */
.console-output {
  background: #05080e;
  color: #e2e8f0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.55;
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  min-height: 220px;
  max-height: 480px;
  overflow-y: auto;
  overflow-x: hidden;
  white-space: pre-wrap;
  word-break: break-word;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.console-output:empty::before {
  content: 'Output will appear here. Press "Run Code" or Ctrl+Enter...';
  color: var(--text-dim);
  font-style: italic;
}

.console-timing {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  color: var(--success);
  margin-top: 0.4rem;
}

/* Matplotlib Plots & Image Gallery */
.plots-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.plot-card {
  background: #ffffff !important;
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: var(--radius-lg);
  padding: 0.85rem;
  text-align: center;
  position: relative;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.plot-img, .plot-card svg {
  background-color: #ffffff !important;
  max-width: 100% !important;
  height: auto !important;
  display: block;
  margin: 0 auto;
  border-radius: var(--radius-md);
}

.plot-toolbar {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}

/* Mathematical Theory & Algorithm Card */
.theory-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  line-height: 1.7;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow-x: hidden;
}

.theory-card h3, .theory-card h4 {
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.theory-card p {
  margin-bottom: 0.85rem;
  color: var(--text);
  word-break: break-word;
}

.katex-display {
  padding: 0.5rem 0;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
}

/* Fullscreen Mode for Editor */
.fullscreen-mode {
  position: fixed !important;
  inset: 0 !important;
  z-index: 2500 !important;
  background: var(--bg) !important;
  padding: 1.5rem !important;
  display: flex !important;
  flex-direction: column !important;
}

.fullscreen-mode .CodeMirror {
  height: calc(100vh - 120px) !important;
}

/* ==========================================================================
   Animated Physics Simulation Player (1D/2D Random Walk, Monte Carlo, etc.)
   ========================================================================== */
.animation-player-card {
  background: var(--card-bg, #0f172a);
  border: 1px solid var(--card-border, #1e293b);
  border-radius: var(--radius-lg, 12px);
  padding: 1rem;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.anim-player-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--card-border, #1e293b);
}

.anim-status-pill {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.anim-status-pill.paused {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border-color: rgba(245, 158, 11, 0.3);
}

.anim-status-pill.stopped {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.3);
}

.anim-frame-counter {
  font-size: 0.85rem;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-dim, #94a3b8);
}

.anim-frame-counter strong {
  color: var(--accent, #38bdf8);
  font-size: 0.95rem;
}

.anim-screen-wrapper {
  background: #ffffff !important;
  border-radius: var(--radius-md, 8px);
  padding: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  max-height: 440px;
  overflow: hidden;
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.06);
}

.animated-plot-display {
  background: #ffffff !important;
  max-width: 100% !important;
  max-height: 410px !important;
  width: auto !important;
  height: auto !important;
  display: block;
  margin: 0 auto;
  object-fit: contain;
}

.anim-timeline {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.1rem 0;
}

.anim-scrubber {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.18);
  outline: none;
  cursor: pointer;
  transition: background 0.2s;
}

.anim-scrubber::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent, #38bdf8);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.7);
  transition: transform 0.15s, background 0.15s;
}

.anim-scrubber::-webkit-slider-thumb:hover {
  transform: scale(1.25);
  background: #0284c7;
}

.anim-controls-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding-top: 0.25rem;
}

.anim-btn-group {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  flex-wrap: wrap;
}

.btn-danger {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%) !important;
  color: #ffffff !important;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.35);
  border: none !important;
}

.btn-danger:hover {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%) !important;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.5);
  transform: translateY(-1px);
}

/* ==========================================================================
   Interactive Parameter Simulation Controller (Matplotlib Slider Bridge)
   ========================================================================== */
.interactive-slider-card {
  background: var(--card-bg, #0f172a);
  border: 1px solid var(--card-border, #1e293b);
  border-radius: var(--radius-lg, 12px);
  padding: 1rem;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.interactive-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--card-border, #1e293b);
}

.slider-header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.slider-sweep-target-group,
.slider-speed-group {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(15, 23, 42, 0.6);
  padding: 0.2rem 0.45rem;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.slider-target-lbl {
  font-size: 0.73rem;
  color: var(--text-dim, #94a3b8);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  white-space: nowrap;
}

.slider-select-input {
  background: rgba(15, 23, 42, 0.9);
  color: #f8fafc;
  border: 1px solid rgba(99, 102, 241, 0.35);
  border-radius: 5px;
  padding: 0.2rem 0.45rem;
  font-size: 0.75rem;
  font-weight: 500;
  outline: none;
  cursor: pointer;
  transition: all 0.2s ease;
  max-width: 175px;
}

.slider-select-input:focus {
  border-color: #38bdf8;
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.3);
}

.slider-quick-select-btns {
  display: flex;
  align-items: center;
  gap: 3px;
}

.btn-slider-toolbar {
  background: rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  padding: 0.15rem 0.4rem;
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  line-height: 1.2;
}

.btn-slider-toolbar:hover {
  background: rgba(99, 102, 241, 0.3);
  color: #ffffff;
  border-color: rgba(99, 102, 241, 0.5);
}

.slider-sweep-cb-label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  user-select: none;
  background: rgba(255, 255, 255, 0.04);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all 0.15s ease;
}

.slider-sweep-cb-label:hover {
  background: rgba(99, 102, 241, 0.12);
  border-color: rgba(99, 102, 241, 0.3);
}

.slider-sweep-cb {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.slider-sweep-cb-custom {
  width: 15px;
  height: 15px;
  border-radius: 3px;
  border: 1.5px solid rgba(148, 163, 184, 0.5);
  background: rgba(15, 23, 42, 0.7);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  color: transparent;
  transition: all 0.15s ease;
}

.slider-sweep-cb:checked + .slider-sweep-cb-custom {
  background: linear-gradient(135deg, #6366f1 0%, #38bdf8 100%);
  border-color: #38bdf8;
  color: #ffffff;
  box-shadow: 0 0 6px rgba(56, 189, 248, 0.4);
}

.slider-sweep-cb-text {
  font-size: 0.72rem;
  font-weight: 600;
  color: #cbd5e1;
  letter-spacing: 0.02em;
}

.btn-slider-single-sweep {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #94a3b8;
  width: 24px;
  height: 24px;
  border-radius: 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-slider-single-sweep:hover {
  background: rgba(99, 102, 241, 0.3);
  border-color: rgba(99, 102, 241, 0.55);
  color: #ffffff;
  transform: scale(1.08);
}

.btn-slider-single-sweep.active-sweeping {
  background: rgba(16, 185, 129, 0.25);
  border-color: rgba(16, 185, 129, 0.6);
  color: #10b981;
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.35);
}

.interactive-slider-row.is-sweeping {
  background: rgba(99, 102, 241, 0.07);
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.15);
}

.slider-direction-badge {
  font-size: 0.72rem;
  display: none;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
}

.range-edit-icon {
  margin-left: 4px;
  opacity: 0.6;
  font-size: 0.65rem;
  transition: opacity 0.15s;
}

.slider-range-badge {
  cursor: pointer;
}

.slider-range-badge:hover .range-edit-icon {
  opacity: 1;
}

.slider-bound {
  cursor: pointer;
  transition: color 0.15s;
}

.slider-bound:hover {
  color: #38bdf8;
  text-decoration: underline;
}

.slider-status-pill {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.35);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.slider-status-pill.updating {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border-color: rgba(245, 158, 11, 0.35);
}

.slider-status-pill.sweeping {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border-color: rgba(16, 185, 129, 0.35);
  animation: pulse-glow 1.5s infinite;
}

.slider-status-pill.stopped {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.35);
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.interactive-plot-screen {
  background: #ffffff !important;
  border-radius: var(--radius-md, 8px);
  padding: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  max-height: 440px;
  overflow: hidden;
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.06);
}

.interactive-plot-display {
  background: #ffffff !important;
  max-width: 100% !important;
  max-height: 410px !important;
  width: auto !important;
  height: auto !important;
  display: block;
  margin: 0 auto;
  object-fit: contain;
  transition: opacity 0.08s ease;
}

.interactive-sliders-panel {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
}

.interactive-slider-row {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-md, 8px);
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: border-color 0.2s, background 0.2s;
}

.interactive-slider-row:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(99, 102, 241, 0.3);
}

.interactive-slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.slider-label-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  color: var(--accent, #38bdf8);
  font-size: 0.9rem;
  font-weight: 600;
}

.slider-title {
  color: var(--text, #f8fafc);
  font-size: 0.9rem;
  font-weight: 600;
  margin: 0;
  cursor: pointer;
}

.slider-range-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.28);
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.slider-val-container {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.slider-val-label {
  font-size: 0.75rem;
  color: var(--text-dim, #94a3b8);
  font-weight: 500;
}

.slider-num-input {
  background: rgba(15, 23, 42, 0.75);
  color: #f8fafc;
  border: 1px solid rgba(99, 102, 241, 0.4);
  border-radius: 6px;
  padding: 0.2rem 0.45rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 600;
  width: 78px;
  text-align: right;
  outline: none;
  transition: all 0.2s ease;
}

.slider-num-input:focus {
  border-color: var(--accent, #38bdf8);
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.4);
  background: rgba(15, 23, 42, 0.95);
}

.slider-val-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 600;
  color: #818cf8;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  letter-spacing: 0.02em;
  display: none; /* Replaced by interactive slider-num-input */
}

.slider-val-badge strong {
  color: #ffffff;
  font-weight: 700;
}

.interactive-slider-controls {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  width: 100%;
}

.slider-bound {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-dim, #94a3b8);
  min-width: 32px;
  text-align: center;
  user-select: none;
}

.interactive-range-input {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  height: 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.15);
  outline: none;
  cursor: pointer;
  transition: background 0.2s;
}

.interactive-range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1 0%, #38bdf8 100%);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.7);
  transition: transform 0.15s, box-shadow 0.15s;
}

.interactive-range-input::-webkit-slider-thumb:hover {
  transform: scale(1.25);
  box-shadow: 0 0 14px rgba(56, 189, 248, 0.9);
}

.btn-slider-step {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text, #f8fafc);
  border: 1px solid rgba(255, 255, 255, 0.12);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.btn-slider-step:hover {
  background: rgba(99, 102, 241, 0.25);
  border-color: rgba(99, 102, 241, 0.5);
  color: #ffffff;
  transform: translateY(-1px);
}

.btn-slider-step:active {
  transform: translateY(1px);
}

/* ==========================================================================
   Responsive Rules: Guaranteed Zero Horizontal Scroll
   ========================================================================== */
@media (max-width: 1200px) {
  .workbench-layout {
    grid-template-columns: 220px minmax(0, 1fr);
  }
}

@media (max-width: 1024px) {
  .workbench-layout {
    grid-template-columns: minmax(0, 1fr) !important;
  }
  .workbench-sidebar {
    display: none; /* Handled by top dropdown select */
  }
  .sidebar-toggle-btn {
    display: none !important;
  }
  .workspace-container {
    grid-template-columns: minmax(0, 1fr) !important;
  }
}

@media (max-width: 640px) {
  .editor-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .tabs-header {
    overflow-x: auto;
    flex-wrap: nowrap;
  }
}