/* ---------- IDE shell ---------- */
.ide {
  border: 1px solid rgba(54,58,79,0.8);
  border-radius: 14px; overflow: hidden;
  background: var(--panel-bg);
  box-shadow:
    0 28px 72px rgba(0,0,0,0.6),
    0 2px 8px rgba(0,0,0,0.4),
    0 0 0 1px rgba(99,102,241,0.06);
  font-family: var(--ui);
}

.ide-titlebar {
  display: flex; align-items: center; gap: 14px;
  background: linear-gradient(180deg, #2e3145 0%, #282b3c 100%);
  border-bottom: 1px solid var(--border);
  padding: 8px 16px; user-select: none;
}

.traffic { display: flex; gap: 7px; }
.traffic span { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.traffic .r { background: #ff5f57; box-shadow: 0 0 6px rgba(255,95,87,0.4); }
.traffic .y { background: #febc2e; box-shadow: 0 0 6px rgba(254,188,46,0.3); }
.traffic .g { background: #28c840; box-shadow: 0 0 6px rgba(40,200,64,0.35); }

.ide-menu { display: flex; gap: 2px; }
.ide-menu span {
  font-size: 12.5px; color: #8892b0; padding: 3px 8px; border-radius: 4px; cursor: default;
}
.ide-menu span:hover { background: rgba(255,255,255,0.07); }

.ide-proj {
  margin-left: auto; font-size: 12.5px; color: var(--cmt);
  display: flex; align-items: center; gap: 8px;
}

.ide-run-btn {
  display: none; align-items: center; gap: 7px;
  font-family: var(--ui); font-size: 13px; font-weight: 600;
  background: linear-gradient(135deg, var(--run-green), #74c7b9);
  color: #0d1117; border: 1px solid rgba(166,227,161,0.3);
  border-radius: 6px; padding: 5px 14px; cursor: pointer;
  transition: all .18s; letter-spacing: -0.01em;
}
.ide-run-btn.visible { display: inline-flex; animation: runBtnPulse 2s ease-in-out infinite; }
.ide-run-btn:hover { filter: brightness(1.12); transform: translateY(-1px); }
.ide-run-btn:active { transform: translateY(1px); }
.ide-run-btn:disabled { opacity: .4; cursor: default; animation: none; }
.ide-run-btn:focus-visible { outline: 2px solid var(--meth); outline-offset: 2px; }

@keyframes runBtnPulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(166,227,161,0.45); }
  50% { box-shadow: 0 0 0 7px rgba(166,227,161,0); }
}

.ide-body { display: flex; min-height: 380px; position: relative; }

/* Project tree */
.ide-tree {
  width: 220px; flex: 0 0 220px;
  background: var(--panel-bg-2);
  border-right: 1px solid var(--border);
  padding: 8px 0; font-size: 13px; color: #8892b0; user-select: none;
}
.tree-header {
  font-size: 10.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: var(--cmt); padding: 2px 14px 8px;
}
.tree-item {
  display: flex; align-items: center; gap: 6px;
  padding: 3px 10px; white-space: nowrap; cursor: default;
  border-left: 2px solid transparent;
  transition: background .1s;
}
.tree-item .tw { color: var(--cmt); font-size: 9px; width: 10px; text-align: center; }
.tree-item.depth-1 { padding-left: 26px; }
.tree-item.depth-2 { padding-left: 44px; }
.tree-item.depth-3 { padding-left: 62px; }
.tree-item.depth-4 { padding-left: 80px; }
.tree-item.depth-5 { padding-left: 98px; }
.tree-item.active {
  background: rgba(99,102,241,0.12);
  border-left-color: var(--accent-indigo);
  color: var(--fg);
}
.tree-item.dim { opacity: .4; }
.tree-item.flash-in { animation: treeFlash 1.2s ease; }
.tree-item.demo-target { background: rgba(99,102,241,0.18); }
@keyframes treeFlash {
  0% { background: rgba(245,158,11,0.25); opacity: 0; transform: translateX(-6px); }
  40% { background: rgba(245,158,11,0.25); opacity: 1; transform: none; }
  100% { background: transparent; }
}
.icon { width: 15px; height: 15px; flex: 0 0 15px; }

/* Tabs + editor */
.ide-editor-col { flex: 1; display: flex; flex-direction: column; min-width: 0; background: var(--ed-bg); }
.ide-tabs {
  display: flex; background: var(--panel-bg);
  border-bottom: 1px solid var(--border); min-height: 33px;
}
.ide-tab {
  display: flex; align-items: center; gap: 7px;
  font-size: 12.5px; color: var(--cmt); padding: 7px 16px 6px;
  border-right: 1px solid var(--border); cursor: default;
  transition: color .15s;
}
.ide-tab.active {
  background: var(--ed-bg); color: var(--fg);
  box-shadow: inset 0 2px 0 var(--accent-indigo);
}

.ide-editor {
  flex: 1; display: flex; overflow-x: auto;
  font-family: var(--mono); font-size: 14px; line-height: 1.78;
  position: relative;
}
.gutter {
  background: var(--gutter-bg); color: var(--gutter-fg);
  text-align: right; padding: 12px 10px 12px 18px; user-select: none;
  border-right: 1px solid var(--border); min-width: 46px; font-size: 13px;
}
.gutter div { height: 1.78em; }
.code-area { flex: 1; padding: 12px 20px; white-space: pre; }
.code-line { height: 1.78em; }
.code-line.current { background: var(--line-current); margin: 0 -20px; padding: 0 20px; }
.tk { color: var(--fg); transition: opacity .5s ease; }
.tk.kw { color: var(--kw); } .tk.str { color: var(--str); } .tk.num { color: var(--num); }
.tk.cmt { color: var(--cmt); font-style: italic; } .tk.meth { color: var(--meth); }
.tk.field { color: var(--field); }
.code-area.dim .tk { opacity: .5; }
.code-area.dim .tk.solved-pop, .code-area .tk.solved-pop { opacity: 1; }
.tk.solved-pop { animation: popIn .4s ease; }
@keyframes popIn { 0% { transform: scale(1.25); filter: brightness(1.8); } 100% { transform: scale(1); } }

/* Blanks */
.blank-input {
  font-family: var(--mono); font-size: 14px; line-height: 1.4;
  background: rgba(54,58,79,0.6); color: var(--fg);
  border: none; border-bottom: 2px dashed var(--border-soft);
  border-radius: 3px 3px 0 0; padding: 0 4px; margin: 0 1px;
  vertical-align: baseline; caret-color: var(--meth);
  transition: border-color .2s, background .2s, box-shadow .2s;
}
.blank-input::placeholder { color: #585b70; }
.blank-input:focus {
  outline: none; border-bottom-color: var(--accent-indigo);
  background: rgba(99,102,241,0.15);
  box-shadow: 0 2px 14px rgba(99,102,241,0.3);
}
.blank-input.ok { border-bottom: 2px solid var(--ok-green); background: rgba(166,227,161,0.12); }
.blank-input.err { border-bottom: 2px solid var(--err-red); background: rgba(243,139,168,0.12); animation: shake .35s ease; }

@keyframes shake {
  0%,100% { transform: translateX(0); }
  15% { transform: translateX(-5px); } 30% { transform: translateX(5px); }
  45% { transform: translateX(-4px); } 60% { transform: translateX(4px); }
  75% { transform: translateX(-2px); } 90% { transform: translateX(2px); }
}

/* Empty editor state */
.editor-empty {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; color: #585b70; font-family: var(--ui); font-size: 13px; padding: 40px 20px;
}
.editor-empty .kbd-row { display: flex; gap: 8px; align-items: center; }
.editor-empty kbd {
  font-family: var(--mono); font-size: 11.5px; background: var(--border-soft);
  border: 1px solid var(--border-soft); border-radius: 4px; padding: 1px 7px; color: #8892b0;
}
.demo-play-btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--ui); font-size: 15px; font-weight: 600;
  background: linear-gradient(135deg, var(--run-green), #74c7b9);
  color: #0d1117; border: 1px solid rgba(166,227,161,0.3);
  border-radius: 9px; padding: 12px 28px; cursor: pointer; margin-top: 10px;
  transition: all .18s;
  animation: runBtnPulse 2s ease-in-out infinite;
}
.demo-play-btn:hover { filter: brightness(1.1); transform: translateY(-1px); }
.demo-play-btn:focus-visible { outline: 2px solid var(--meth); outline-offset: 2px; }

/* Demo overlay elements */
.ide-overlay { position: absolute; inset: 0; pointer-events: none; z-index: 5; }
.ctx-menu {
  position: absolute; background: var(--panel-bg);
  border: 1px solid var(--border-soft); border-radius: 8px;
  box-shadow: 0 10px 32px rgba(0,0,0,0.65);
  padding: 5px 0; min-width: 165px; font-size: 12.5px; color: #a6adc8;
  animation: fadeSlide .18s ease;
}
.ctx-menu .ci { display: flex; justify-content: space-between; gap: 18px; padding: 4px 14px; }
.ctx-menu .ci .arr { color: var(--cmt); }
.ctx-menu .ci.hi { background: var(--sel-blue); color: var(--fg); }
.ctx-menu .sep { height: 1px; background: var(--border-soft); margin: 4px 0; }

.demo-dialog {
  position: absolute; left: 50%; top: 42%; transform: translate(-50%, -50%);
  background: var(--panel-bg); border: 1px solid var(--border-soft); border-radius: 10px;
  box-shadow: 0 18px 52px rgba(0,0,0,0.7); width: 300px;
  font-size: 13px; color: #a6adc8; animation: fadeSlide .2s ease;
}
.demo-dialog .dlg-title {
  padding: 9px 16px; font-weight: 600; border-bottom: 1px solid var(--border-soft); color: var(--fg);
}
.demo-dialog .dlg-input {
  margin: 12px 14px 8px; background: var(--border-soft); border: 1px solid var(--border-soft);
  border-radius: 5px; padding: 6px 10px; font-family: var(--mono); font-size: 13.5px;
  color: var(--fg); min-height: 20px;
}
.demo-dialog .dlg-input .caret {
  display: inline-block; width: 1px; height: 14px; background: #cad3f5;
  vertical-align: text-bottom; animation: blink .9s steps(1) infinite; margin-left: 1px;
}
@keyframes blink { 50% { opacity: 0; } }
.demo-dialog .dlg-list { margin: 0 14px 14px; border: 1px solid var(--border-soft); border-radius: 5px; overflow: hidden; }
.demo-dialog .dlg-list div { padding: 4px 12px; display: flex; gap: 8px; align-items: center; }
.demo-dialog .dlg-list div.sel { background: var(--sel-blue); color: var(--fg); }

/* Demo Spring Initializr (Unidad 2) */
.demo-dialog.spring-init { width: 360px; }
.spring-init .init-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 3px 14px;
  margin: 12px 14px 8px; font-size: 12px;
}
.spring-init .init-grid .lbl { color: var(--cmt); }
.spring-init .init-grid .val { color: var(--fg); font-family: var(--mono); font-size: 11.5px; }
.spring-init .dlg-generate {
  display: block; margin: 12px 14px 14px; padding: 7px 0; width: calc(100% - 28px);
  text-align: center; font-weight: 700; font-size: 12.5px; letter-spacing: .06em;
  background: var(--run-green); color: #10281c; border-radius: 6px;
  transition: filter .15s, transform .15s;
}
.spring-init .dlg-generate.hi { filter: brightness(1.18); transform: scale(1.04); }

/* Run panel */
.ide-run {
  border-top: 1px solid var(--border); background: var(--panel-bg);
  animation: slideUp .3s ease;
}
@keyframes slideUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.run-header {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 14px; font-size: 12.5px; color: #8892b0;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #2e3145 0%, #282b3c 100%);
}
.run-header .traffic { gap: 6px; }
.run-header .traffic span { width: 10px; height: 10px; }
.run-header .run-title { font-weight: 600; color: #a6adc8; font-size: 12.5px; }
.run-header .run-glyph { color: var(--run-green); font-size: 11px; }
.run-header b { color: var(--fg); font-weight: 600; }

.run-console {
  font-family: var(--mono); font-size: 13px; line-height: 1.8;
  background: var(--ed-bg); padding: 10px 18px; min-height: 96px; white-space: pre-wrap;
}
.run-console .dim-line { color: var(--cmt); }
.run-console .out-line { color: #a6adc8; }
.run-console .banner-line { color: var(--run-green); line-height: 1.3; white-space: pre; font-size: 12px; }
.run-console .ok-line { color: var(--run-green); font-weight: 600; }
.run-console .info-line { color: #89b4fa; }
.run-console .err-line { color: #f38ba8; }
.run-console .caret {
  display: inline-block; width: 7px; height: 14px; background: #a6adc8;
  animation: blink .9s steps(1) infinite; vertical-align: text-bottom;
}

/* Status bar */
.ide-status {
  display: flex; justify-content: space-between; align-items: center;
  background: linear-gradient(90deg, #2563eb, #38bdf8);
  border-top: none;
  padding: 4px 14px; font-size: 11.5px; color: rgba(255,255,255,0.88); min-height: 24px;
}
.ide-status .demo-cap { color: #f8fafc; font-weight: 700; transition: opacity .3s; }