/* ========================================================
   DISEÑO FORMAL Y PROFESIONAL (ESTILO IDE DE INGENIERÍA)
   Sin degradados, sin efectos de neón, colores sólidos y sobrios.
   ======================================================== */
:root {
  /* Fondos y estructura */
  --bg-app: #0F172A;
  --bg-editor: #1E293B;
  --bg-console: #0B1120;
  --border-ui: #334155;

  /* Textos */
  --text-primary: #F8FAFC;
  --text-muted: #94A3B8;

  /* Estados de ejecución */
  --accent-run: #10B981;
  --accent-run-hover: #059669;
  --state-error: #EF4444;
  --state-warning: #F59E0B;

  /* Tokens del compilador */
  --syntax-keyword: #C084FC;
  --syntax-type: #38BDF8;
  --syntax-identifier: #F1F5F9;
  --syntax-operator: #F43F5E;
  --syntax-number: #FBBF24;
  --syntax-comment: #64748B;

  /* Tipografías formales */
  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-code: "Consolas", "Fira Code", "Courier New", monospace;

  /* Sombras sutiles no invasivas (sin brillo) */
  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-modal: 0 10px 25px rgba(0, 0, 0, 0.4);
}

/* Modo claro formal */
[data-theme="light"] {
  --bg-app: #F8FAFC;
  --bg-editor: #FFFFFF;
  --bg-console: #F1F5F9;
  --border-ui: #E2E8F0;

  --text-primary: #0F172A;
  --text-muted: #64748B;

  --accent-run: #059669;
  --accent-run-hover: #047857;
  --state-error: #DC2626;
  --state-warning: #D97706;

  --syntax-keyword: #7E22CE;
  --syntax-type: #0284C7;
  --syntax-identifier: #1E293B;
  --syntax-operator: #E11D48;
  --syntax-number: #D97706;
  --syntax-comment: #94A3B8;

  --shadow-subtle: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-modal: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* ========================================================
   REGLAS BASE
   ======================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-ui);
  background-color: var(--bg-app);
  color: var(--text-primary);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ========================================================
   BARRA SUPERIOR (HEADER FORMAL)
   ======================================================== */
.app-topbar {
  height: 52px;
  background-color: var(--bg-app);
  border-bottom: 1px solid var(--border-ui);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  z-index: 20;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  width: 32px;
  height: 32px;
  background-color: var(--bg-editor);
  border: 1px solid var(--border-ui);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--syntax-type);
}

.brand-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-title {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.brand-badge {
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
  background-color: var(--bg-editor);
  border: 1px solid var(--border-ui);
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.03em;
}

.topbar-center {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.control-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.select-input {
  background-color: var(--bg-editor);
  color: var(--text-primary);
  border: 1px solid var(--border-ui);
  border-radius: 4px;
  padding: 0.35rem 0.65rem;
  font-size: 0.82rem;
  font-family: var(--font-ui);
  outline: none;
  cursor: pointer;
}

.select-input:hover {
  border-color: var(--text-muted);
}

.select-input:focus {
  border-color: var(--syntax-type);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ========================================================
   BOTONES FORMALES (PLANOS, SIN DEGRADADOS NI BRILLOS)
   ======================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 500;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid transparent;
  outline: none;
  user-select: none;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background-color: var(--accent-run);
  color: #ffffff;
  border-color: var(--accent-run);
}

.btn-primary:hover {
  background-color: var(--accent-run-hover);
  border-color: var(--accent-run-hover);
}

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

.btn-secondary:hover {
  background-color: var(--border-ui);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border-ui);
}

.btn-outline:hover {
  background-color: var(--bg-editor);
}

.btn-icon {
  background: none;
  border: 1px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  background-color: var(--bg-editor);
  border-color: var(--border-ui);
  color: var(--text-primary);
}

/* ========================================================
   INDICADOR DE ESTADO (SOBRIO, SIN ANIMACIÓN NEÓN)
   ======================================================== */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
  border: 1px solid var(--border-ui);
  background-color: var(--bg-editor);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.status-ready {
  color: var(--text-muted);
}
.status-ready .status-dot {
  background-color: var(--text-muted);
}

.status-running {
  color: var(--syntax-type);
}
.status-running .status-dot {
  background-color: var(--syntax-type);
}

.status-success {
  color: var(--accent-run);
}
.status-success .status-dot {
  background-color: var(--accent-run);
}

.status-error {
  color: var(--state-error);
}
.status-error .status-dot {
  background-color: var(--state-error);
}

/* ========================================================
   ÁREA DE TRABAJO (PANEL DUAL DE INGENIERÍA)
   ======================================================== */
.ide-workspace {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  height: calc(100vh - 52px);
  overflow: hidden;
}

.ide-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
  background-color: var(--bg-app);
  overflow: hidden;
}

.editor-panel {
  border-right: 1px solid var(--border-ui);
}

.panel-header {
  height: 36px;
  background-color: var(--bg-app);
  border-bottom: 1px solid var(--border-ui);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
}

.panel-header-title {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
}

.editor-tools {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.cursor-counter {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-code);
}

/* ========================================================
   EDITOR DE CÓDIGO FUENTE
   ======================================================== */
.editor-container {
  flex: 1;
  display: flex;
  position: relative;
  background-color: var(--bg-editor);
  overflow: hidden;
}

.line-numbers {
  width: 48px;
  background-color: var(--bg-console);
  color: var(--syntax-comment);
  font-family: var(--font-code);
  font-size: 13.5px;
  line-height: 22px;
  padding: 1rem 0.5rem 1rem 0.25rem;
  text-align: right;
  user-select: none;
  overflow: hidden;
  border-right: 1px solid var(--border-ui);
}

textarea#editor {
  flex: 1;
  background-color: transparent;
  color: var(--syntax-identifier);
  border: none;
  padding: 1rem;
  font-family: var(--font-code);
  font-size: 13.5px;
  line-height: 22px;
  resize: none;
  outline: none;
  white-space: pre;
  overflow-x: auto;
  overflow-y: scroll;
  tab-size: 4;
}

/* ========================================================
   PESTAÑAS DEL INSPECTOR
   ======================================================== */
.inspector-tabs {
  height: 36px;
  background-color: var(--bg-app);
  border-bottom: 1px solid var(--border-ui);
  display: flex;
  align-items: stretch;
  padding: 0 0.5rem;
  gap: 0.25rem;
}

.tab-button {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0 0.85rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 0;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.tab-button:hover {
  color: var(--text-primary);
}

.tab-button.active {
  color: var(--text-primary);
  border-bottom-color: var(--syntax-type);
  font-weight: 600;
}

.tab-content-wrapper {
  flex: 1;
  position: relative;
  overflow: hidden;
  background-color: var(--bg-console);
}

.tab-pane {
  display: none;
  height: 100%;
  flex-direction: column;
}

.tab-pane.active {
  display: flex;
}

.panel-scroll-container {
  flex: 1;
  overflow: auto;
  padding: 0.75rem;
}

/* ========================================================
   CONSOLA DE RESULTADOS (FORMATO INGENIERIL SOBRIO)
   ======================================================== */
.terminal-view {
  flex: 1;
  background-color: var(--bg-console);
  padding: 1rem;
  font-family: var(--font-code);
  font-size: 13px;
  line-height: 1.6;
  overflow-y: auto;
  white-space: pre-wrap;
  color: var(--text-primary);
}

.console-welcome {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.prompt-symbol {
  color: var(--syntax-type);
  font-weight: 600;
}

.console-line-out {
  color: var(--text-primary);
  display: block;
  padding: 1px 0;
}

.console-line-system {
  color: var(--text-muted);
  font-size: 0.75rem;
  display: block;
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-ui);
}

.console-line-error {
  color: var(--state-error);
  background-color: rgba(239, 68, 68, 0.06);
  border: 1px solid var(--state-error);
  padding: 0.6rem 0.8rem;
  margin: 0.5rem 0;
  border-radius: 4px;
  display: block;
}

.console-code-snippet {
  color: var(--syntax-number);
  background-color: var(--bg-editor);
  border: 1px solid var(--border-ui);
  padding: 0.5rem 0.75rem;
  margin: 0.4rem 0;
  border-radius: 4px;
  font-family: var(--font-code);
  display: block;
}

.console-footer {
  height: 32px;
  background-color: var(--bg-app);
  border-top: 1px solid var(--border-ui);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 1rem;
}

.console-metrics {
  display: flex;
  gap: 1.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-code);
}

/* ========================================================
   TABLAS DE DATOS
   ======================================================== */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  text-align: left;
}

.data-table th {
  background-color: var(--bg-app);
  color: var(--text-muted);
  font-weight: 600;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border-ui);
  position: sticky;
  top: 0;
  z-index: 10;
}

.data-table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border-ui);
  font-family: var(--font-code);
  color: var(--text-primary);
}

.data-table tr:hover {
  background-color: var(--bg-editor);
}

.badge-type {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 500;
  background-color: var(--bg-editor);
  border: 1px solid var(--border-ui);
  color: var(--syntax-type);
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 2.5rem !important;
  font-family: var(--font-ui) !important;
}

/* ========================================================
   ÁRBOL AST
   ======================================================== */
.ast-json-view {
  font-family: var(--font-code);
  font-size: 12.5px;
  color: var(--text-primary);
  background-color: var(--bg-console);
  padding: 1rem;
  border-radius: 4px;
  border: 1px solid var(--border-ui);
  overflow-x: auto;
  line-height: 1.5;
}

/* ========================================================
   MODAL DE AYUDA FORMAL
   ======================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1.5rem;
}

.modal-backdrop.hidden {
  display: none;
}

.modal-window {
  background-color: var(--bg-app);
  border: 1px solid var(--border-ui);
  border-radius: 8px;
  width: 100%;
  max-width: 900px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-modal);
  overflow: hidden;
}

.modal-header {
  padding: 0.85rem 1.25rem;
  background-color: var(--bg-app);
  border-bottom: 1px solid var(--border-ui);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title-area {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
}

.modal-title-area h2 {
  font-size: 1rem;
  font-weight: 600;
}

.btn-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
  padding: 0 4px;
}

.btn-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  flex: 1;
  background-color: var(--bg-console);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 1rem;
}

.guide-card {
  background-color: var(--bg-editor);
  border: 1px solid var(--border-ui);
  border-radius: 6px;
  padding: 1rem;
}

.guide-card h3 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--syntax-type);
  margin-bottom: 0.4rem;
}

.guide-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.guide-card pre {
  background-color: var(--bg-console);
  border: 1px solid var(--border-ui);
  border-radius: 4px;
  padding: 0.6rem;
  overflow-x: auto;
  font-family: var(--font-code);
  font-size: 12px;
  color: var(--text-primary);
}

.guide-list {
  list-style: none;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.guide-list li {
  margin-bottom: 0.35rem;
}

.guide-list code {
  color: var(--syntax-type);
  font-family: var(--font-code);
  background-color: var(--bg-console);
  border: 1px solid var(--border-ui);
  padding: 1px 4px;
  border-radius: 3px;
}

.modal-footer-info {
  margin-top: 1.25rem;
  padding: 0.75rem;
  background-color: var(--bg-editor);
  border: 1px solid var(--border-ui);
  border-radius: 4px;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

/* ========================================================
   PÁGINA 404
   ======================================================== */
.error-page-body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background-color: var(--bg-app);
}

.error-card {
  text-align: center;
  background-color: var(--bg-editor);
  border: 1px solid var(--border-ui);
  padding: 2.5rem;
  border-radius: 8px;
  max-width: 440px;
}

.error-badge {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--state-error);
  line-height: 1;
  margin-bottom: 0.75rem;
}

.error-card h1 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.error-card p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

/* ========================================================
   SCROLLBAR SOBRIO
   ======================================================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-app);
}

::-webkit-scrollbar-thumb {
  background: var(--border-ui);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--syntax-comment);
}