/* ==========================================================================
   VPL — Veriscimo Programming Language
   Folha de estilos principal.
   Tokens → reset → componentes → layout → responsivo → syntax → a11y.
   ========================================================================== */

/* ============================== 1. TOKENS ============================== */
/* Breakpoints (referência): 768px (tablet), 1024px (desktop), 1440px (wide) */

:root {
  /* --- Cores de superfície (tema escuro, padrão) --- */
  --color-bg:           #0B1220;   /* fundo primário          */
  --color-bg-2:         #131B2E;   /* painéis                  */
  --color-bg-3:         #1A2340;   /* toolbar/modais           */
  --color-bg-terminal:  #05080F;   /* terminal (sempre escuro) */
  --color-border:       #253049;
  --color-border-soft:  #1f2a44;

  /* --- Cores da marca --- */
  --color-primary:      #22C55E;   /* verde principal          */
  --color-primary-2:    #4ADE80;   /* verde claro              */
  --color-primary-3:    #047857;   /* verde profundo           */
  --color-accent:       #A855F7;   /* roxo accent              */

  /* --- Texto --- */
  --color-text:         #E5E7EB;
  --color-text-2:       #94A3B8;
  --color-text-muted:   #64748B;
  --color-text-inverse: #0B1220;

  /* --- Feedback --- */
  --color-error:        #EF4444;
  --color-warning:      #FBBF24;
  --color-info:         #60A5FA;
  --color-success:      #22C55E;

  /* --- Sombras --- */
  --shadow-sm:          0 1px 2px rgba(0,0,0,0.25);
  --shadow-md:          0 4px 12px rgba(0,0,0,0.35);
  --shadow-lg:          0 12px 32px rgba(0,0,0,0.45);
  --shadow-modal:       0 24px 64px rgba(0,0,0,0.55);

  /* --- Espaçamento --- */
  --sp-1:  4px;
  --sp-2:  8px;
  --sp-3:  12px;
  --sp-4:  16px;
  --sp-5:  20px;
  --sp-6:  24px;
  --sp-8:  32px;
  --sp-10: 40px;
  --sp-12: 48px;

  /* --- Radius --- */
  --r-sm:   4px;
  --r-md:   8px;
  --r-lg:   12px;
  --r-xl:   16px;
  --r-pill: 999px;

  /* --- Tipografia --- */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --fs-xs:   12px;
  --fs-sm:   13px;
  --fs-md:   14px;
  --fs-lg:   16px;
  --fs-xl:   18px;
  --fs-2xl:  22px;
  --fs-3xl:  28px;
  --lh-tight: 1.2;
  --lh-body:  1.5;

  /* --- Transições --- */
  --t-fast:   120ms cubic-bezier(.2,.7,.3,1);
  --t-base:   200ms cubic-bezier(.2,.7,.3,1);
  --t-slow:   320ms cubic-bezier(.2,.7,.3,1);

  /* --- Sizes --- */
  --toolbar-h: 56px;
  --panel-header-h: 36px;
  --footer-h: 32px;
  --splitter-w: 4px;

  /* --- Syntax highlighting (usados pelo CodeMirror da Fase 4) --- */
  --syntax-keyword:  #4ADE80;
  --syntax-builtin:  #22D3EE;
  --syntax-type:     #22D3EE;
  --syntax-string:   #FB923C;
  --syntax-number:   #A855F7;
  --syntax-comment:  #64748B;
  --syntax-operator: #E5E7EB;
  --syntax-ident:    #E5E7EB;

  /* --- Editor CodeMirror (Fase 4 usa estes tokens via fallback) --- */
  --color-fg:             var(--color-text);
  --color-editor-bg:      var(--color-bg-2);
  --color-gutter-bg:      var(--color-bg);
  --color-gutter-fg:      #475569;
  --color-gutter-active:  var(--color-text-2);
  --color-caret:          var(--color-primary-2);
  --color-selection:      rgba(74, 222, 128, 0.22);
  --color-active-line:    rgba(74, 222, 128, 0.06);
  --color-error-bg:       rgba(239, 68, 68, 0.14);
  --color-bracket:        rgba(74, 222, 128, 0.22);
  --color-panel-bg:       var(--color-bg-3);
  --color-panel-border:   var(--color-border);
}

/* Tema claro: sobrescreve as cores de superfície e de texto. */
[data-theme="light"] {
  --color-bg:           #F1F5F9;
  --color-bg-2:         #FFFFFF;
  --color-bg-3:         #F8FAFC;
  /* terminal permanece escuro — intencional */
  --color-border:       #CBD5E1;
  --color-border-soft:  #E2E8F0;

  --color-text:         #0F172A;
  --color-text-2:       #334155;
  --color-text-muted:   #64748B;
  --color-text-inverse: #FFFFFF;

  --shadow-sm:          0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md:          0 4px 12px rgba(15, 23, 42, 0.10);
  --shadow-lg:          0 12px 32px rgba(15, 23, 42, 0.18);
  --shadow-modal:       0 24px 64px rgba(15, 23, 42, 0.22);

  --color-primary:      #16A34A;
  --color-primary-2:    #22C55E;
  --color-primary-3:    #166534;
  --color-accent:       #7C3AED;

  /* Syntax highlighting para fundo claro (contraste AA em fundo branco) */
  --syntax-keyword:  #16A34A;
  --syntax-builtin:  #0891B2;
  --syntax-type:     #0891B2;
  --syntax-string:   #C2410C;
  --syntax-number:   #7C3AED;
  --syntax-comment:  #94A3B8;
  --syntax-operator: #334155;
  --syntax-ident:    #0F172A;

  /* Editor CodeMirror — overrides claros */
  --color-fg:             #0F172A;
  --color-editor-bg:      #FFFFFF;
  --color-gutter-bg:      #F1F5F9;
  --color-gutter-fg:      #94A3B8;
  --color-gutter-active:  #334155;
  --color-caret:          #16A34A;
  --color-selection:      rgba(22, 163, 74, 0.18);
  --color-active-line:    rgba(15, 23, 42, 0.04);
  --color-error-bg:       rgba(220, 38, 38, 0.10);
  --color-bracket:        rgba(22, 163, 74, 0.22);
  --color-panel-bg:       #FFFFFF;
  --color-panel-border:   #CBD5E1;
}

/* ============================== 2. RESET =============================== */

*, *::before, *::after { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  line-height: var(--lh-body);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  display: grid;
  grid-template-rows: var(--toolbar-h) auto 1fr var(--footer-h);
  grid-template-areas: "toolbar" "tabs" "workspace" "footer";
  min-height: 100vh;
  background: var(--color-bg);
  color: var(--color-text);
}

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
button[disabled] { cursor: not-allowed; }

ul { list-style: none; padding: 0; margin: 0; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: var(--lh-tight); }
p { margin: 0; }
code, kbd, pre { font-family: var(--font-mono); }

/* ============================== 3. A11Y ================================ */

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: var(--sp-4);
  z-index: 100;
  padding: var(--sp-2) var(--sp-4);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-weight: 600;
  border-radius: var(--r-md);
  text-decoration: none;
  transition: top var(--t-base);
}
.skip-link:focus { top: var(--sp-2); }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}

/* ============================== 4. ICONS =============================== */

.icon {
  width: 18px;
  height: 18px;
  flex: none;
  stroke: currentColor;
  fill: none;
  vertical-align: middle;
}
.icon--sm { width: 14px; height: 14px; }
.icon--lg { width: 24px; height: 24px; }

/* Ícones de tema: mostra lua em tema claro (ativa o escuro),
   sol em tema escuro (ativa o claro). */
[data-theme="dark"] .icon--theme-light { display: none; }
[data-theme="light"] .icon--theme-dark { display: none; }

/* ============================== 5. BOTÕES ============================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  min-height: 36px;
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--color-text);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  white-space: nowrap;
  user-select: none;
  transition:
    background-color var(--t-fast),
    border-color var(--t-fast),
    transform var(--t-fast),
    color var(--t-fast);
}
.btn:hover:not(:disabled) { background: rgba(255,255,255,0.05); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: 0.4; }

[data-theme="light"] .btn:hover:not(:disabled) { background: rgba(15,23,42,0.06); }

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: inset 0 -1px 0 rgba(0,0,0,0.15);
}
.btn--primary:hover:not(:disabled) { background: var(--color-primary-2); }
.btn--primary:active:not(:disabled) { background: var(--color-primary-3); color: #fff; }

.btn--danger {
  background: color-mix(in srgb, var(--color-error) 15%, transparent);
  color: var(--color-error);
  border-color: color-mix(in srgb, var(--color-error) 35%, transparent);
}
.btn--danger:hover:not(:disabled) {
  background: color-mix(in srgb, var(--color-error) 25%, transparent);
}
.btn--danger:disabled {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}

.btn--ghost {
  color: var(--color-text-2);
  border-color: transparent;
}
.btn--ghost:hover:not(:disabled) { color: var(--color-text); }

.btn--icon {
  min-width: 36px;
  padding: var(--sp-2);
  justify-content: center;
}
.btn--icon .btn__label { display: none; }

.btn--sm { min-height: 28px; padding: var(--sp-1) var(--sp-2); font-size: var(--fs-xs); }

.btn.is-running .icon--play { display: none; }

/* ============================= 6. TOOLBAR ============================== */

.toolbar {
  grid-area: toolbar;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  height: var(--toolbar-h);
  padding: 0 var(--sp-4);
  background: var(--color-bg-3);
  border-bottom: 1px solid var(--color-border);
  z-index: 10;
  position: relative;
}

.toolbar__brand {
  display: flex;
  align-items: center;
  flex: none;
}
.toolbar__logo-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  border-radius: 6px;
  padding: 2px 4px;
  transition: filter var(--transition-fast);
}
.toolbar__logo-link:hover {
  filter: brightness(1.1) drop-shadow(0 0 8px rgba(74, 222, 128, 0.35));
}
.toolbar__logo-link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.toolbar__logo {
  height: 32px;
  width: auto;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
}

.toolbar__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  flex: 1;
  min-width: 0;
  margin-left: var(--sp-2);
}

.toolbar__status {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex: none;
  position: relative;
}

.toolbar__separator {
  display: inline-block;
  width: 1px;
  height: 22px;
  background: var(--color-border);
  margin: 0 var(--sp-2);
  flex: none;
}

.toolbar__hamburger { display: none; }

/* ============================ 7. STATUS PILL =========================== */

.status {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 4px var(--sp-3);
  background: var(--color-bg-2);
  border: 1px solid var(--color-border);
  border-radius: var(--r-pill);
  font-size: var(--fs-xs);
  color: var(--color-text-2);
  font-weight: 500;
  min-height: 28px;
}

.status__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-text-muted);
  flex: none;
}

.status--ready .status__dot    { background: var(--color-primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 20%, transparent); }
.status--running .status__dot  { background: var(--color-info); animation: pulse 1.1s ease-in-out infinite; }
.status--error .status__dot    { background: var(--color-error); }

.status--ready   { color: var(--color-primary-2); }
.status--running { color: var(--color-info); }
.status--error   { color: var(--color-error); }

@keyframes pulse {
  0%, 100% { transform: scale(1);   box-shadow: 0 0 0 0  color-mix(in srgb, var(--color-info) 50%, transparent); }
  50%      { transform: scale(1.2); box-shadow: 0 0 0 6px color-mix(in srgb, var(--color-info) 0%, transparent); }
}

/* ============================== 8. TABS ================================ */

.tabs {
  grid-area: tabs;
  display: flex;
  gap: 2px;
  background: var(--color-bg-2);
  border-bottom: 1px solid var(--color-border);
  padding: 0 var(--sp-2);
}

.tab {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-4);
  color: var(--color-text-2);
  font-size: var(--fs-sm);
  font-weight: 500;
  border-bottom: 2px solid transparent;
  min-height: 44px;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.tab:hover { color: var(--color-text); }
.tab[aria-selected="true"] {
  color: var(--color-primary-2);
  border-bottom-color: var(--color-primary);
}

/* Em desktop/tablet as tabs ficam ocultas (desktop mostra 3 colunas) */
@media (min-width: 768px) {
  .tabs { display: none; }
}

/* =========================== 9. WORKSPACE ============================== */

.workspace {
  grid-area: workspace;
  display: grid;
  min-height: 0;
  overflow: hidden;
  background: var(--color-bg);
}

/* Desktop: 3 colunas (editor | splitter | terminal) */
@media (min-width: 1024px) {
  .workspace {
    grid-template-columns: var(--split-left, 60fr) var(--splitter-w) var(--split-right, 40fr);
    grid-template-rows: 1fr;
  }
}

/* Tablet: 2 linhas, sem splitter */
@media (min-width: 768px) and (max-width: 1023.98px) {
  .workspace {
    grid-template-columns: 1fr;
    grid-template-rows: 3fr 2fr;
  }
  .splitter { display: none; }
}

/* Mobile: 1 coluna, 1 linha (tabs alternam painéis via [hidden]) */
@media (max-width: 767.98px) {
  .workspace {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
  }
  .splitter { display: none; }
  #panel-editor, #panel-terminal { grid-column: 1; grid-row: 1; }
}

/* =============================== 10. PAINEL ============================ */

.panel {
  display: flex;
  flex-direction: column;
  background: var(--color-bg-2);
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.panel--editor   { border-right: 1px solid var(--color-border); }
.panel--terminal {
  background: var(--color-bg-terminal);
  border-top: 1px solid var(--color-border);
}

@media (min-width: 1024px) {
  .panel--terminal { border-top: 0; border-left: 1px solid var(--color-border); }
  .panel--editor   { border-right: 0; }
}

.panel[hidden] { display: none !important; }

.panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  height: var(--panel-header-h);
  min-height: var(--panel-header-h);
  padding: 0 var(--sp-4);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-3);
  flex: none;
}
.panel--terminal .panel__header {
  background: #0b1222;
  color: #94A3B8;
  border-bottom-color: #1f2a44;
}
.panel--terminal .panel__title { color: #CBD5E1; }
.panel--terminal .panel__meta  { color: #94A3B8; }

.panel__title {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text-2);
  letter-spacing: 0.02em;
}

.panel__meta {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
  font-family: var(--font-mono);
}

/* =========================== 11. EDITOR (CM6) ========================== */

.editor {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 14px;
  background: var(--color-bg-2);
}

/* CodeMirror 6 expande dentro do .editor — cores via tokens para tema claro/escuro */
.editor .cm-editor {
  height: 100%;
  background: var(--color-editor-bg);
  color: var(--color-fg);
}
.editor .cm-content {
  color: var(--color-fg);
  caret-color: var(--color-caret);
}
.editor .cm-scroller {
  font-family: var(--font-mono);
  line-height: 1.55;
}
.editor .cm-gutters {
  background: var(--color-gutter-bg);
  color: var(--color-gutter-fg);
  border-right: 1px solid var(--color-border-soft);
}
.editor .cm-activeLine        { background: var(--color-active-line); }
.editor .cm-activeLineGutter  { background: var(--color-active-line); color: var(--color-gutter-active); }
.editor .cm-cursor,
.editor .cm-dropCursor        { border-left-color: var(--color-caret); }
.editor .cm-selectionBackground,
.editor ::selection           { background: var(--color-selection) !important; }

/* Linha com erro — a Fase 4 aplica .cm-error-line via decoration */
.cm-error-line {
  background: var(--color-error-bg);
  box-shadow: inset 3px 0 0 var(--color-error);
}

/* Tooltip de autocomplete respeita tema */
.cm-tooltip.cm-tooltip-autocomplete > ul {
  background: var(--color-panel-bg) !important;
  border: 1px solid var(--color-panel-border) !important;
  color: var(--color-fg) !important;
  font-family: var(--font-mono);
}
.cm-tooltip-autocomplete ul li[aria-selected] {
  background: var(--color-selection) !important;
}

/* ============================= 12. TERMINAL ============================ */
/* O terminal é sempre escuro, independentemente do tema. Por isso usamos
   tokens locais (--term-*) que NÃO mudam entre light/dark. */

.terminal {
  --term-fg:         #E5E7EB;
  --term-fg-muted:   #94A3B8;
  --term-caret:      #4ADE80;
  --term-scroll:     #253049;
  --term-scroll-hv:  #334155;

  flex: 1;
  min-height: 0;
  padding: var(--sp-3) var(--sp-4);
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--color-bg-terminal);
  color: var(--term-fg);
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.55;
  scrollbar-width: thin;
  scrollbar-color: var(--term-scroll) transparent;
}
.terminal::-webkit-scrollbar          { width: 10px; height: 10px; }
.terminal::-webkit-scrollbar-track    { background: transparent; }
.terminal::-webkit-scrollbar-thumb    { background: var(--term-scroll); border-radius: var(--r-sm); }
.terminal::-webkit-scrollbar-thumb:hover { background: var(--term-scroll-hv); }

.terminal__line {
  white-space: pre-wrap;
  word-break: break-word;
  padding: 1px 0;
  color: var(--term-fg);
}
.terminal__line--error { color: #FCA5A5; }
.terminal__line--info  { color: #93C5FD; font-style: italic; }
.terminal__line--input { color: #4ADE80; }

.terminal__prompt {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding-top: var(--sp-1);
}
.terminal__prompt-caret {
  color: #4ADE80;
  font-weight: 600;
  user-select: none;
}
.terminal__input {
  flex: 1;
  min-width: 0;
  padding: var(--sp-1) 0;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--term-fg);
  font-family: inherit;
  font-size: inherit;
  caret-color: var(--term-caret);
}
.terminal__input::placeholder { color: var(--term-fg-muted); font-style: italic; }
.terminal__input:disabled     { color: var(--term-fg-muted); }

/* ============================== 13. SPLITTER =========================== */

.splitter {
  background: var(--color-border);
  cursor: col-resize;
  transition: background var(--t-fast);
  position: relative;
  user-select: none;
  touch-action: none;
}
.splitter:hover,
.splitter:focus-visible,
.splitter.is-dragging { background: var(--color-primary); outline: none; }

/* ============================== 14. DROPDOWN =========================== */

.dropdown { position: relative; }

.dropdown__menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 220px;
  max-height: min(70vh, 420px);
  overflow-y: auto;
  padding: var(--sp-1);
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-lg);
  z-index: 50;
}
.dropdown__menu[hidden] { display: none; }

.dropdown__item {
  display: flex;
  width: 100%;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  font-size: var(--fs-sm);
  color: var(--color-text);
  text-align: left;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background var(--t-fast);
}
.dropdown__item:hover,
.dropdown__item:focus,
.dropdown__item.is-active {
  background: rgba(168, 85, 247, 0.15);
  color: var(--color-text);
  outline: none;
}

.dropdown__item--header {
  padding: var(--sp-2) var(--sp-3) var(--sp-1);
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.dropdown__menu--mobile {
  right: 0;
  left: auto;
  min-width: 260px;
}

/* =============================== 15. MODAL ============================= */

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: var(--sp-4);
}
.modal[hidden] { display: none; }

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 8, 15, 0.72);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: fadeIn var(--t-base);
}

.modal__dialog {
  position: relative;
  width: min(520px, 100%);
  max-height: calc(100vh - var(--sp-8));
  display: flex;
  flex-direction: column;
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-modal);
  overflow: hidden;
  animation: popIn var(--t-base);
}
.modal__dialog--wide { width: min(720px, 100%); }

.modal__close {
  position: absolute;
  top: var(--sp-2);
  right: var(--sp-2);
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  color: var(--color-text-2);
  border-radius: var(--r-md);
  z-index: 2;
  transition: background var(--t-fast), color var(--t-fast);
}
.modal__close:hover { background: rgba(255,255,255,0.08); color: var(--color-text); }

.modal__hero {
  display: grid;
  place-items: center;
  gap: var(--sp-2);
  padding: var(--sp-8) var(--sp-6) var(--sp-4);
  background:
    radial-gradient(ellipse at top, rgba(74, 222, 128, 0.18), transparent 70%),
    linear-gradient(180deg, rgba(168, 85, 247, 0.06), transparent 80%);
}
.modal__hero-logo {
  width: min(320px, 72%);
  height: auto;
  display: block;
  filter: drop-shadow(0 6px 20px rgba(74, 222, 128, 0.25));
  user-select: none;
}
.modal__hero-tagline {
  margin: 0;
  font-size: var(--fs-sm);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-2);
  font-weight: 500;
}
.modal__hero-image {
  width: min(280px, 60%);
  height: auto;
  object-fit: contain;
  user-select: none;
}

.modal__body {
  padding: var(--sp-5) var(--sp-6);
  overflow-y: auto;
}

.modal__title {
  font-size: var(--fs-2xl);
  color: var(--color-text);
  margin-bottom: var(--sp-3);
}
.modal__subtitle {
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--color-primary-2);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: var(--sp-5) 0 var(--sp-2);
}
.modal__lead {
  color: var(--color-text-2);
  line-height: 1.6;
}
.modal__lead code {
  background: rgba(168, 85, 247, 0.12);
  color: var(--color-primary-2);
  padding: 2px 6px;
  border-radius: var(--r-sm);
  font-size: 0.9em;
}

.modal__code {
  margin: 0;
  padding: var(--sp-3) var(--sp-4);
  background: var(--color-bg-terminal);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--r-md);
  overflow-x: auto;
  font-size: var(--fs-sm);
  line-height: 1.55;
}
.modal__code code { color: inherit; }

.modal__notes {
  margin: 0;
  padding-left: var(--sp-5);
  color: var(--color-text-2);
}
.modal__notes li { margin-bottom: var(--sp-2); }
.modal__notes code {
  background: rgba(168, 85, 247, 0.12);
  color: var(--color-primary-2);
  padding: 1px 5px;
  border-radius: var(--r-sm);
  font-size: 0.9em;
}

.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--sp-2);
  padding: var(--sp-4) var(--sp-6);
  border-top: 1px solid var(--color-border);
  background: color-mix(in srgb, var(--color-bg-3) 80%, black 20%);
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes popIn  {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0)   scale(1);   }
}

/* ============================== 16. KBD-LIST =========================== */

.kbd-list {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: var(--sp-2) var(--sp-4);
  margin: 0;
  align-items: center;
}
.kbd-list dt {
  display: inline-flex;
  gap: var(--sp-1);
  align-items: center;
}
.kbd-list dd {
  margin: 0;
  color: var(--color-text-2);
  font-size: var(--fs-sm);
}

kbd {
  display: inline-block;
  min-width: 22px;
  padding: 2px 6px;
  background: var(--color-bg-2);
  border: 1px solid var(--color-border);
  border-bottom-width: 2px;
  border-radius: var(--r-sm);
  font: 500 var(--fs-xs)/1.2 var(--font-mono);
  color: var(--color-text);
  text-align: center;
  white-space: nowrap;
  box-shadow: 0 1px 0 rgba(0,0,0,0.25);
}

/* ============================== 17. TOASTS ============================= */

.toast-container {
  position: fixed;
  right: var(--sp-4);
  bottom: var(--sp-4);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  pointer-events: none;
  max-width: calc(100vw - var(--sp-6));
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: flex-start;
  gap: var(--sp-2);
  min-width: 240px;
  max-width: 360px;
  padding: var(--sp-3) var(--sp-4);
  background: var(--color-bg-3);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-info);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-lg);
  font-size: var(--fs-sm);
  animation: toastIn var(--t-base);
  word-wrap: break-word;
}
.toast .icon { flex: none; margin-top: 2px; }

.toast--success { border-left-color: var(--color-success); }
.toast--success .icon { color: var(--color-success); }
.toast--error   { border-left-color: var(--color-error); }
.toast--error   .icon { color: var(--color-error); }
.toast--warning { border-left-color: var(--color-warning); }
.toast--warning .icon { color: var(--color-warning); }
.toast--info    { border-left-color: var(--color-info); }
.toast--info    .icon { color: var(--color-info); }

.toast.is-leaving { animation: toastOut var(--t-base) forwards; }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(16px); }
  to   { opacity: 1; transform: translateX(0);    }
}
@keyframes toastOut {
  from { opacity: 1; transform: translateX(0);    }
  to   { opacity: 0; transform: translateX(16px); }
}

/* =============================== 18. FOOTER ============================ */

.footer {
  grid-area: footer;
  height: var(--footer-h);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--sp-4);
  background: var(--color-bg-3);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--fs-xs);
}
.footer em { color: var(--color-primary-2); font-style: italic; }

/* ============================= 19. FILE INPUT ========================== */

.file-input {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  opacity: 0;
  pointer-events: none;
}

/* ============================= 20. RESPONSIVO ========================== */

/* Mobile: <768px — esconde labels dos botões principais e tudo supérfluo.
   Mostra Executar, Parar, status e hamburger. */
@media (max-width: 767.98px) {
  .toolbar { gap: var(--sp-2); padding: 0 var(--sp-3); }

  .toolbar__actions { gap: var(--sp-1); flex: 1; justify-content: flex-start; }

  /* Esconde botões auxiliares — acessíveis via hamburger */
  .toolbar__actions #btn-clear,
  .toolbar__actions #btn-new,
  .toolbar__actions #btn-open,
  .toolbar__actions #btn-save,
  .toolbar__actions .toolbar__separator,
  .toolbar__actions .dropdown {
    display: none;
  }

  /* Esconde também ajuda (fica no hamburger) */
  #btn-help { display: none; }

  .toolbar__hamburger { display: inline-flex; }

  /* Em telas estreitas, reduz os labels dos botões principais visíveis */
  .btn__label { display: none; }
  #btn-run .btn__label,
  #btn-stop .btn__label { display: none; }

  .toolbar__logo { height: 30px; }

  .modal__hero { padding: var(--sp-4) var(--sp-4) 0; }
  .modal__body { padding: var(--sp-4); }
  .modal__footer { padding: var(--sp-3) var(--sp-4); }
  .kbd-list { grid-template-columns: 1fr; }
  .kbd-list dt { justify-self: start; }
}

/* Tablet/Desktop baixo: ≥768 e <1024px — labels reduzidos em ghost */
@media (min-width: 768px) and (max-width: 1023.98px) {
  .toolbar__actions .btn--ghost .btn__label { display: none; }
  .toolbar__actions .btn--ghost { min-width: 36px; justify-content: center; padding: var(--sp-2); }
  .toolbar__actions .dropdown__trigger .btn__label { display: inline; }
}

/* Desktop: ≥1024px — tudo visível */
@media (min-width: 1024px) {
  .toolbar { padding: 0 var(--sp-5); }
  .toolbar__actions { gap: var(--sp-2); }
}

/* Muito pequeno: <480px esconde até o Parar se não estiver executando */
@media (max-width: 479.98px) {
  .toolbar__logo { height: 28px; width: auto; }
  .btn--primary, .btn--danger { padding: var(--sp-2); min-width: 36px; justify-content: center; }
}