/* ==========================================================================
   NexGen CodeLab - Online Compiler & Cloud IDE (OneCompiler Style)
   Hardware-Accelerated 60 FPS, Dark/Light Themes, Split-Pane Workspace
   ========================================================================== */

:root {
  --codelab-bg: #070a16;
  --codelab-panel-bg: rgba(14, 20, 42, 0.92);
  --codelab-header-bg: rgba(10, 14, 32, 0.95);
  --codelab-border: rgba(255, 255, 255, 0.1);
  --codelab-text: #e2e8f0;
  --codelab-muted: #94a3b8;
  --codelab-accent: #00f0ff;
  --codelab-pink: #d946ef;
  --codelab-gutter-bg: rgba(8, 12, 26, 0.95);
  --codelab-terminal-bg: #050814;
  --codelab-editor-font: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, 'Courier New', monospace;
}

[data-codelab-theme="light"] {
  --codelab-bg: #f8fafc;
  --codelab-panel-bg: #ffffff;
  --codelab-header-bg: #f1f5f9;
  --codelab-border: #cbd5e1;
  --codelab-text: #0f172a;
  --codelab-muted: #64748b;
  --codelab-gutter-bg: #e2e8f0;
  --codelab-terminal-bg: #0f172a;
}

/* Main Container */
.codelab-workspace {
  position: relative;
  width: 100%;
  border-radius: 18px;
  background: var(--codelab-panel-bg);
  border: 1px solid var(--codelab-border);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 30px rgba(0, 240, 255, 0.08);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  overflow: hidden;
  transition: all 0.3s ease;
}

/* Fullscreen Mode */
.codelab-workspace.is-fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100vw !important;
  height: 100vh !important;
  max-width: 100vw !important;
  border-radius: 0 !important;
  z-index: 99999 !important;
  margin: 0 !important;
}

/* Top Toolbar */
.codelab-topbar {
  background: var(--codelab-header-bg);
  border-bottom: 1px solid var(--codelab-border);
  padding: 10px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.codelab-lang-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.3);
  padding: 5px 14px;
  border-radius: 50px;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--codelab-accent);
}

.codelab-tool-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid var(--codelab-border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--codelab-text);
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.codelab-tool-btn:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--codelab-accent);
  color: #ffffff;
  transform: translateY(-1px);
}

.codelab-tool-btn.btn-run {
  background: linear-gradient(135deg, #d946ef 0%, #00f0ff 100%);
  border-color: transparent;
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(0, 240, 255, 0.35);
}

.codelab-tool-btn.btn-run:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(0, 240, 255, 0.55);
}

.codelab-tool-btn.btn-run:active {
  transform: scale(0.97);
}

/* Split Pane Container */
.codelab-split-pane {
  display: flex;
  height: 640px;
  width: 100%;
  position: relative;
  overflow: hidden;
}

.codelab-workspace.is-fullscreen .codelab-split-pane {
  height: calc(100vh - 65px) !important;
}

/* Left Pane: Code Editor */
.codelab-pane-editor {
  flex: 1 1 50%;
  min-width: 320px;
  height: 100%;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--codelab-border);
  background: var(--codelab-bg);
  position: relative;
}

/* Right Pane: Output & Terminal */
.codelab-pane-output {
  flex: 1 1 50%;
  min-width: 320px;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--codelab-terminal-bg);
  position: relative;
}

/* Pane Header Bar */
.codelab-pane-header {
  height: 44px;
  min-height: 44px;
  background: var(--codelab-header-bg);
  border-bottom: 1px solid var(--codelab-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
}

/* Editor File Tabs */
.codelab-file-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
}

.codelab-file-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 14px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 8px 8px 0 0;
  border: 1px solid transparent;
  border-bottom: none;
  background: transparent;
  color: var(--codelab-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

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

.codelab-file-tab.active {
  color: #ffffff;
  background: var(--codelab-bg);
  border-color: var(--codelab-border);
  border-top: 2px solid var(--codelab-accent);
}

/* Output Pane Tabs */
.codelab-output-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
}

.codelab-output-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 14px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 8px 8px 0 0;
  border: 1px solid transparent;
  border-bottom: none;
  background: transparent;
  color: var(--codelab-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.codelab-output-tab:hover {
  color: var(--codelab-text);
}

.codelab-output-tab.active {
  color: #ffffff;
  background: var(--codelab-terminal-bg);
  border-color: var(--codelab-border);
  border-top: 2px solid var(--codelab-pink);
}

/* Editor Wrapper & Line Numbers Gutter */
.codelab-editor-wrap {
  position: relative;
  flex: 1 1 auto;
  display: flex;
  overflow: hidden;
}

.codelab-line-numbers {
  width: 50px;
  min-width: 50px;
  padding: 14px 8px 14px 0;
  text-align: right;
  font-family: var(--codelab-editor-font);
  font-size: 0.88rem;
  line-height: 1.55;
  color: #475569;
  background: var(--codelab-gutter-bg);
  border-right: 1px solid var(--codelab-border);
  user-select: none;
  overflow: hidden;
  white-space: pre;
}

.codelab-code-input {
  flex: 1 1 auto;
  width: 100%;
  height: 100%;
  padding: 14px 16px;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  font-family: var(--codelab-editor-font);
  font-size: 0.88rem;
  line-height: 1.55;
  color: #f8fafc;
  tab-size: 2;
  white-space: pre;
  word-wrap: normal;
  overflow-x: auto;
  overflow-y: auto;
}

/* Status Bar */
.codelab-statusbar {
  height: 26px;
  background: var(--codelab-header-bg);
  border-top: 1px solid var(--codelab-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  font-size: 0.72rem;
  color: var(--codelab-muted);
}

/* Output Display Screens */
.codelab-output-display {
  flex: 1 1 auto;
  height: 100%;
  overflow: auto;
  position: relative;
}

/* Terminal Console View */
.codelab-terminal-view {
  width: 100%;
  height: 100%;
  padding: 14px 16px;
  font-family: var(--codelab-editor-font);
  font-size: 0.86rem;
  line-height: 1.6;
  color: #38bdf8;
  background: var(--codelab-terminal-bg);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-y: auto;
}

.codelab-terminal-prompt {
  color: #22c55e;
  font-weight: 700;
  user-select: none;
}

.codelab-terminal-error {
  color: #f87171;
}

.codelab-terminal-success {
  color: #4ade80;
}

/* Interactive STDIN Textarea */
.codelab-stdin-textarea {
  width: 100%;
  height: 100%;
  padding: 14px 16px;
  background: var(--codelab-terminal-bg);
  border: none;
  outline: none;
  resize: none;
  font-family: var(--codelab-editor-font);
  font-size: 0.88rem;
  color: #e2e8f0;
}

/* Web Output Preview Iframe */
.codelab-preview-frame {
  width: 100%;
  height: 100%;
  border: none;
  background: #ffffff;
}

/* SQL Table Result View */
.codelab-sql-table {
  width: 100%;
  margin-top: 10px;
  border-collapse: collapse;
  font-size: 0.82rem;
  font-family: var(--codelab-editor-font);
}

.codelab-sql-table th {
  background: rgba(0, 240, 255, 0.15);
  color: #00f0ff;
  border: 1px solid rgba(0, 240, 255, 0.3);
  padding: 6px 12px;
  text-align: left;
}

.codelab-sql-table td {
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6px 12px;
  color: #e2e8f0;
}

.codelab-sql-table tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.03);
}

/* Execution Status Badge */
.codelab-status-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 50px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.codelab-status-badge.ready {
  background: rgba(148, 163, 184, 0.15);
  color: #94a3b8;
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.codelab-status-badge.running {
  background: rgba(234, 179, 8, 0.15);
  color: #facc15;
  border: 1px solid rgba(234, 179, 8, 0.3);
}

.codelab-status-badge.success {
  background: rgba(34, 197, 94, 0.15);
  color: #4ade80;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.codelab-status-badge.error {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Toast Notification */
.codelab-toast {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(0, 240, 255, 0.4);
  color: #ffffff;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 0.82rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7), 0 0 15px rgba(0, 240, 255, 0.3);
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 999999;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s ease;
  pointer-events: none;
}

.codelab-toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Stacking */
@media (max-width: 991px) {
  .codelab-split-pane {
    flex-direction: column;
    height: auto;
  }
  .codelab-pane-editor,
  .codelab-pane-output {
    flex: 1 1 auto;
    height: 440px;
    border-right: none;
    border-bottom: 1px solid var(--codelab-border);
  }
}