/* ==========================================================================
   Klassen-DartPad – Stylesheet (100 % lokal, keine externen Webfonts/CDNs)
   ========================================================================== */

:root {
  --bg-app: #0f141c;
  --bg-topbar: #161d27;
  --bg-pane-header: #18202c;
  --bg-editor: #131922;
  --bg-editor-gutter: #10161e;
  --bg-active-line: #1c2533;
  --bg-console: #05070a;
  --border-color: #263244;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --accent-dart: #00b4ab;
  --btn-green-bg: #238636;
  --btn-green-hover: #2ea043;
  --btn-green-active: #1a6328;
  --btn-secondary-bg: #212936;
  --btn-secondary-hover: #2d3848;
  --btn-danger-bg: #da3633;
  --btn-danger-hover: #f85149;
  --stdout-color: #e6edf3;
  --stderr-color: #ff7b72;
  --stderr-bg: rgba(248, 81, 73, 0.1);
  --stderr-border: rgba(248, 81, 73, 0.4);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "Cascadia Mono", Consolas, "Liberation Mono", "Courier New", monospace;
  --editor-font-size: 15px;
}

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

html,
body {
  height: 100%;
  width: 100%;
  overflow: hidden;
  background-color: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

body {
  display: flex;
  flex-direction: column;
}

/* --------------------------------------------------------------------------
   Obere Werkzeugleiste (Topbar)
   -------------------------------------------------------------------------- */
.topbar {
  height: 54px;
  min-height: 54px;
  background-color: var(--bg-topbar);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  user-select: none;
}

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

.brand-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.brand-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.2px;
  color: #ffffff;
}

.seb-badge {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 3px 8px;
  border-radius: 999px;
  background-color: rgba(0, 180, 171, 0.14);
  color: #39d5cc;
  border: 1px solid rgba(0, 180, 171, 0.35);
}

.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  padding: 0 14px;
  border-radius: 6px;
  font-family: var(--font-sans);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 0.12s ease, border-color 0.12s ease, transform 0.05s ease;
  color: #ffffff;
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.btn-icon {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}

.btn-secondary {
  background-color: var(--btn-secondary-bg);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--btn-secondary-hover);
  border-color: #3b4c66;
}

/* Auffälliger grüner "Ausführen"-Button */
.btn-run {
  background-color: var(--btn-green-bg);
  border-color: rgba(255, 255, 255, 0.15);
  padding: 0 16px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
}

.btn-run:hover:not(:disabled) {
  background-color: var(--btn-green-hover);
}

.btn-run:active:not(:disabled) {
  background-color: var(--btn-green-active);
}

.btn-danger {
  background-color: var(--btn-danger-bg);
  border-color: rgba(255, 255, 255, 0.15);
}

.btn-danger:hover:not(:disabled) {
  background-color: var(--btn-danger-hover);
}

.shortcut-hint {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  padding: 2px 6px;
  border-radius: 4px;
  background-color: rgba(0, 0, 0, 0.28);
  color: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

/* --------------------------------------------------------------------------
   Split-Screen Workspace
   -------------------------------------------------------------------------- */
.workspace {
  flex: 1;
  display: flex;
  width: 100%;
  height: calc(100% - 54px);
  overflow: hidden;
}

.pane {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-width: 260px;
  overflow: hidden;
}

.pane-editor {
  width: 55%;
  background-color: var(--bg-editor);
}

.pane-console {
  flex: 1;
  background-color: var(--bg-console);
}

.splitter {
  width: 6px;
  background-color: var(--bg-topbar);
  border-left: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  cursor: col-resize;
  flex-shrink: 0;
  transition: background-color 0.15s ease;
}

.splitter:hover,
.splitter.dragging {
  background-color: var(--accent-dart);
}

/* --------------------------------------------------------------------------
   Pane-Header
   -------------------------------------------------------------------------- */
.pane-header {
  height: 36px;
  min-height: 36px;
  background-color: var(--bg-pane-header);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  user-select: none;
}

.pane-tab {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-primary);
}

.file-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-dart);
}

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

.console-title {
  font-size: 12.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-secondary);
}

.pane-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.meta-text {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-secondary);
}

.font-controls {
  display: flex;
  gap: 4px;
}

.btn-icon-small,
.btn-clear {
  background-color: var(--btn-secondary-bg);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 2px 7px;
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
}

.btn-icon-small:hover,
.btn-clear:hover {
  color: var(--text-primary);
  background-color: var(--btn-secondary-hover);
}

/* Status-Badges in der Konsole */
.status-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
}

.status-idle {
  background-color: rgba(139, 148, 158, 0.15);
  color: var(--text-secondary);
}

.status-running {
  background-color: rgba(56, 139, 253, 0.2);
  color: #58a6ff;
}

.status-success {
  background-color: rgba(46, 160, 67, 0.2);
  color: #3fb950;
}

.status-error {
  background-color: rgba(248, 81, 73, 0.2);
  color: #ff7b72;
}

/* --------------------------------------------------------------------------
   CodeMirror Editor & Dart Syntax-Highlighting (Dunkles Prüfungs-Theme)
   -------------------------------------------------------------------------- */
.editor-wrapper {
  flex: 1;
  position: relative;
  overflow: hidden;
}

.CodeMirror {
  height: 100% !important;
  width: 100%;
  background-color: var(--bg-editor) !important;
  color: var(--text-primary) !important;
  font-family: var(--font-mono) !important;
  font-size: var(--editor-font-size) !important;
  line-height: 1.55 !important;
}

.CodeMirror-gutters {
  background-color: var(--bg-editor-gutter) !important;
  border-right: 1px solid var(--border-color) !important;
  padding-right: 4px;
}

.CodeMirror-linenumber {
  color: #546378 !important;
  padding: 0 8px 0 6px !important;
}

.CodeMirror-activeline-background {
  background-color: var(--bg-active-line) !important;
}

.CodeMirror-activeline-gutter {
  background-color: #17202d !important;
}

.CodeMirror-cursor {
  border-left: 2px solid #39d5cc !important;
}

.CodeMirror-selected {
  background-color: rgba(56, 139, 253, 0.26) !important;
}

.CodeMirror-focused .CodeMirror-selected {
  background-color: rgba(56, 139, 253, 0.34) !important;
}

.CodeMirror-matchingbracket {
  color: #ffffff !important;
  background-color: rgba(0, 180, 171, 0.35);
  outline: 1px solid rgba(0, 180, 171, 0.7);
  text-decoration: none !important;
}

/* Dart Syntax-Farben */
.cm-s-default .cm-keyword {
  color: #ff7b72 !important;
  font-weight: 600;
}
.cm-s-default .cm-atom {
  color: #79c0ff !important;
}
.cm-s-default .cm-number {
  color: #79c0ff !important;
}
.cm-s-default .cm-def {
  color: #d2a8ff !important;
}
.cm-s-default .cm-variable {
  color: #e6edf3 !important;
}
.cm-s-default .cm-variable-2 {
  color: #ffa657 !important;
}
.cm-s-default .cm-variable-3,
.cm-s-default .cm-type {
  color: #7ee787 !important;
}
.cm-s-default .cm-property {
  color: #79c0ff !important;
}
.cm-s-default .cm-operator {
  color: #ff7b72 !important;
}
.cm-s-default .cm-comment {
  color: #8b949e !important;
  font-style: italic;
}
.cm-s-default .cm-string {
  color: #a5d6ff !important;
}
.cm-s-default .cm-string-2 {
  color: #79c0ff !important;
}
.cm-s-default .cm-meta {
  color: #d2a8ff !important;
}
.cm-s-default .cm-builtin {
  color: #ffa657 !important;
}

/* --------------------------------------------------------------------------
   Rechte Seite: Konsolenausgabe (Schwarzer Hintergrund, Monospace)
   -------------------------------------------------------------------------- */
.console-output {
  flex: 1;
  background-color: var(--bg-console);
  padding: 16px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.55;
  color: var(--stdout-color);
}

.console-placeholder {
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 13.5px;
}

.console-placeholder kbd {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 1px 5px;
  border-radius: 3px;
  background-color: #161d27;
  border: 1px solid var(--border-color);
}

.output-block {
  white-space: pre-wrap;
  word-break: break-word;
  margin-bottom: 12px;
}

.output-stdout {
  color: var(--stdout-color);
}

.output-stderr {
  color: var(--stderr-color);
  background-color: var(--stderr-bg);
  border-left: 3px solid var(--stderr-border);
  padding: 10px 12px;
  border-radius: 4px;
}

.output-empty {
  color: var(--text-secondary);
  font-style: italic;
}

.error-line-link {
  color: #ffa657;
  text-decoration: underline;
  cursor: pointer;
}

.error-line-link:hover {
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   Lade-Spinner & Modal-Dialog
   -------------------------------------------------------------------------- */
.spinner {
  width: 15px;
  height: 15px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.hidden {
  display: none !important;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-card {
  background-color: var(--bg-topbar);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  width: 100%;
  max-width: 420px;
  padding: 20px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.55);
}

.modal-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #ffffff;
}

.modal-body {
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}