/* =====================================================================
   Interfaz estilo MySQL Workbench (Windows)
   ===================================================================== */
:root {
  --win: #f0f0f0;
  --chrome: #e8e8e8;
  --panel: #ffffff;
  --line: #c8c8c8;
  --line-soft: #dedede;
  --ink: #1e1e1e;
  --ink-2: #555;
  --ink-3: #8a8a8a;
  --blue: #2b6fd0;
  --blue-bar: #3c7de0;
  --kw: #1f5fbf;
  --num: #e0761a;
  --str: #2f8a3a;
  --com: #8b8b8b;
  --hl: #fff4c4;
  --hl-edge: #f0c020;
  --ok: #2e9b45;
  --err: #d23b30;
  --warn: #d98a00;
  --sel: #dbe8fb;
  --mono: Consolas, "Cascadia Mono", "Courier New", monospace;
  --ui: "Segoe UI", Tahoma, system-ui, -apple-system, Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { background: var(--win); color: var(--ink); font: 13px/1.4 var(--ui); }
button, input, select { font: inherit; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.wb { height: 100dvh; display: grid; grid-template-columns: minmax(0, 1fr); grid-template-rows: 30px 32px 26px 40px minmax(0, 1fr) 24px; border: 1px solid #000; }

/* ---------- barra de título y menús ---------- */
.wb-title { display: flex; align-items: center; gap: 8px; padding: 0 12px; background: #fff; font-size: 14px; }
.wb-logo { width: 18px; height: 18px; display: block; }
.wb-title-sp { flex: 1; }
.wb-winbtn { color: #333; letter-spacing: 2px; padding-left: 14px; }
.wb-clock { font: 600 13px var(--mono); background: #eef4fd; border: 1px solid #b9d0f2; color: var(--blue); padding: 2px 10px; border-radius: 3px; }
.wb-clock.low { background: #fdecea; border-color: #f2b9b4; color: var(--err); animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: .55; } }
.wb-hometabs { display: flex; align-items: stretch; background: var(--chrome); border-bottom: 1px solid var(--line); }
.wb-home { width: 44px; display: grid; place-items: center; font-size: 20px; color: #4a4a4a; }
.wb-instance { display: flex; align-items: center; gap: 18px; padding: 0 14px; background: var(--win); border: 1px solid var(--line); border-bottom: 0; margin-top: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 70vw; }
.wb-instance b { font-weight: 400; color: #777; }
.wb-menu { display: flex; gap: 2px; padding: 0 6px; align-items: center; background: var(--win); }
.wb-menu span { padding: 2px 8px; }
.wb-maintool { display: flex; align-items: center; gap: 10px; padding: 0 12px; border-bottom: 1px solid var(--line); background: var(--win); }

/* ---------- iconos ---------- */
.ic { display: inline-block; width: 18px; height: 18px; background: center / contain no-repeat; vertical-align: -4px; flex: none; }
.ic-sql  { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M4 1h9l4 4v14H4z' fill='%23fff' stroke='%23555'/%3E%3Ctext x='5' y='12' font-size='5' font-family='Arial' font-weight='700' fill='%23333'%3ESQL%3C/text%3E%3C/svg%3E"); }
.ic-db   { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cellipse cx='10' cy='4' rx='7' ry='2.5' fill='%23eee' stroke='%23666'/%3E%3Cpath d='M3 4v12c0 1.4 3.1 2.5 7 2.5s7-1.1 7-2.5V4' fill='%23eee' stroke='%23666'/%3E%3Cpath d='M3 8c0 1.4 3.1 2.5 7 2.5S17 9.4 17 8M3 12c0 1.4 3.1 2.5 7 2.5s7-1.1 7-2.5' fill='none' stroke='%23999'/%3E%3C/svg%3E"); }
.ic-tb   { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Crect x='2' y='3' width='16' height='14' fill='%23fff' stroke='%23555'/%3E%3Crect x='2' y='3' width='16' height='3.5' fill='%23b8c7da'/%3E%3Cpath d='M2 10h16M2 13.5h16M8 6.5v10.5' stroke='%23999'/%3E%3C/svg%3E"); }
.ic-folder { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M2 5h6l2 2h8v9H2z' fill='%23e9e9e9' stroke='%23777'/%3E%3C/svg%3E"); }
.ic-open { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M2 5h6l2 2h7v2H6l-4 7z' fill='%23f5d27a' stroke='%23a7802a'/%3E%3Cpath d='M6 9h13l-4 7H2z' fill='%23f8e2a4' stroke='%23a7802a'/%3E%3C/svg%3E"); }
.ic-save { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Crect x='3' y='3' width='14' height='14' rx='1' fill='%235a7fb5'/%3E%3Crect x='6' y='3' width='8' height='5' fill='%23fff'/%3E%3Crect x='5' y='11' width='10' height='6' fill='%23dfe8f5'/%3E%3C/svg%3E"); }
.ic-bolt, .ic-bolt2 { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M11 1 4 11h5l-2 8 8-11h-5z' fill='%23f6c21c' stroke='%23b8860b' stroke-width='.8'/%3E%3C/svg%3E"); }
.ic-find { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Ccircle cx='8' cy='8' r='5' fill='%23e8f1fb' stroke='%23555' stroke-width='1.5'/%3E%3Cpath d='M12 12l6 6' stroke='%23555' stroke-width='2'/%3E%3C/svg%3E"); }

/* ---------- distribución principal ---------- */
.wb-main {
  display: grid; min-height: 0;
  grid-template-columns: 236px minmax(0, 1fr) 380px;
  grid-template-rows: minmax(0, 1fr) 220px;
  grid-template-areas: "nav center side" "nav out out";
}
.wb-phead {
  height: 22px; padding: 0 8px; display: flex; align-items: center; color: #555; font-size: 12.5px;
  background: var(--chrome) radial-gradient(circle, #b5b5b5 0.8px, transparent 1px) 0 0 / 4px 4px;
  background-blend-mode: normal;
}
.wb-phead { background-color: var(--chrome); }

/* Navigator */
.wb-nav { grid-area: nav; display: flex; flex-direction: column; min-height: 0; border-right: 1px solid var(--line); background: var(--win); }
.wb-nav-title { display: flex; justify-content: space-between; padding: 6px 10px 4px; font-weight: 700; font-size: 12.5px; background: #fff; }
.wb-filter { margin: 0 8px 4px; padding: 3px 6px; border: 1px solid var(--line); background: #fff; color: var(--ink-3); font-size: 12px; }
.tree { flex: 1; overflow: auto; margin: 0; padding: 4px 6px 8px; list-style: none; background: #fff; font-size: 13px; }
.tree ul { list-style: none; margin: 0; padding-left: 16px; }
.tree li { white-space: nowrap; padding: 1px 0; color: #222; }
.tree details summary { cursor: pointer; list-style: none; padding: 1px 2px; border-radius: 2px; }
.tree details summary::-webkit-details-marker { display: none; }
.tree details summary::before { content: "▸ "; color: #444; }
.tree details[open] summary::before { content: "▾ "; }
.tree details summary:hover { background: var(--sel); }
.tree .cols li { font-size: 12.5px; color: #333; }
.col-ic { font-size: 9px; color: #9aa7b8; vertical-align: 1px; }
.col-ic.pk { color: #e0a400; }
.col-ic.fk { color: #c94a8f; }
.wb-legend { padding: 4px 10px; font-size: 11.5px; color: var(--ink-2); background: #fff; border-top: 1px solid var(--line-soft); }
.wb-navtabs { display: flex; gap: 2px; padding: 4px 6px 0; background: var(--win); border-top: 1px solid var(--line); }
.wb-navtabs span { padding: 2px 8px; color: #444; }
.wb-navtabs .on { background: #fff; color: var(--blue); border: 1px solid var(--line); border-bottom: 0; }
.wb-info { padding: 10px; font-weight: 600; background: var(--win); min-height: 70px; }
.wb-info small { font-weight: 400; color: var(--ink-2); }

/* Editor central */
.wb-center { grid-area: center; display: flex; flex-direction: column; min-width: 0; min-height: 0; border-right: 1px solid var(--line); background: #fff; }
.wb-qtabs { display: flex; overflow-x: auto; background: var(--chrome); border-bottom: 1px solid var(--line); scrollbar-width: thin; flex: none; }
.qtab { position: relative; flex: none; padding: 6px 14px; border: 0; border-right: 1px solid var(--line-soft); background: transparent; color: #333; cursor: pointer; white-space: nowrap; }
.qtab:hover { background: #f6f6f6; }
.qtab.on { background: var(--blue); color: #fff; }
.qtab.dim { color: #777; cursor: default; }
.qtab.done::after { content: "*"; margin-left: 2px; }
.qtab.ok { box-shadow: inset 0 -3px 0 var(--ok); }
.qtab.bad { box-shadow: inset 0 -3px 0 var(--err); }
.wb-edtool { display: flex; align-items: center; gap: 8px; padding: 4px 10px; border-bottom: 1px solid var(--line-soft); background: var(--win); flex: none; flex-wrap: wrap; }
.wb-edtool .sep { width: 1px; height: 20px; background: var(--line); }
.limit { font-size: 12.5px; color: #333; }
.tb-btn { display: inline-flex; align-items: center; gap: 4px; padding: 2px 10px; border: 1px solid transparent; background: transparent; border-radius: 2px; cursor: pointer; color: #222; }
.tb-btn:hover:not(:disabled) { background: var(--sel); border-color: #a9c4ec; }
.tb-btn:disabled { opacity: .45; cursor: default; }
.tb-btn.sm { padding: 2px 7px; color: var(--blue); }
#btnEnviar { font-weight: 600; }

.editor { flex: 1; margin: 0; overflow: auto; padding: 6px 0 20px; font: 14.5px/1.72 var(--mono); background: #fff; tab-size: 2; }
.editor.short { flex: none; padding-bottom: 8px; border-bottom: 1px solid var(--line-soft); }
.ln { display: flex; min-width: max-content; padding-right: 20px; }
.ln .no { width: 46px; flex: none; text-align: right; color: #6d6d6d; padding-right: 6px; user-select: none; }
.ln .mk { width: 22px; flex: none; text-align: center; color: var(--blue); font-size: 11px; user-select: none; }
.ln .cd { white-space: pre; padding-left: 4px; border-left: 1px solid #eee; }
.ln.hl { background: var(--hl); }
.ln.hl .no { color: #000; font-weight: 700; box-shadow: inset -3px 0 0 var(--hl-edge); }
.k { color: var(--kw); }
.n { color: var(--num); }
.s { color: var(--str); }
.c { color: var(--com); }
.editor.anim .ln { animation: typeIn .25s ease-out both; }
@keyframes typeIn { from { opacity: 0; transform: translateX(-6px); } }

/* Panel derecho */
.wb-side { grid-area: side; display: flex; flex-direction: column; min-height: 0; background: #fff; }
.wb-sidehead { height: 24px; display: flex; align-items: center; padding: 0 8px; color: #fff; font-size: 12.5px;
  background: var(--blue-bar) radial-gradient(circle, rgba(255,255,255,.35) .8px, transparent 1px) 0 0 / 4px 4px; }
.side-jump { display: flex; gap: 10px; align-items: center; padding: 6px 10px; border-bottom: 1px solid var(--line-soft); background: var(--win); }
.nav-ar { color: #999; font-size: 11px; }
.side-jump select { flex: 1; min-width: 0; padding: 2px 4px; border: 1px solid var(--line); background: #fff; }
.side-body { flex: 1; overflow: auto; padding: 16px 18px 20px; }
.wb-sidetabs { display: flex; gap: 2px; padding: 0 8px; border-top: 1px solid var(--line); background: var(--win); flex: none; }
.wb-sidetabs span { padding: 3px 8px; color: #555; font-size: 12.5px; }
.wb-sidetabs .on { color: var(--blue); background: #fff; border: 1px solid var(--line); border-top: 0; }

.side-body h1 { margin: 0 0 4px; font-size: 19px; font-weight: 600; color: #333; }
.side-body .lead { margin: 0 0 14px; color: var(--ink-2); }
.side-body code { font-family: var(--mono); color: var(--kw); }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); margin: 0 0 16px; }
.stats div { padding: 8px 6px; text-align: center; border-right: 1px solid var(--line-soft); }
.stats div:last-child { border-right: 0; }
.stats b { display: block; font: 700 20px var(--mono); color: var(--blue); }
.stats span { font-size: 11.5px; color: var(--ink-2); }
.ingreso label { display: block; margin-bottom: 12px; font-weight: 600; color: #333; }
.ingreso input { display: block; width: 100%; margin-top: 4px; padding: 6px 8px; border: 1px solid #a9a9a9; border-radius: 2px; font-weight: 400; }
.ingreso input:focus { outline: 2px solid #8db4ee; outline-offset: -1px; border-color: var(--blue); }
.btn-run { display: inline-flex; align-items: center; justify-content: center; gap: 6px; width: 100%; padding: 8px 12px; margin: 4px 0 10px;
  background: linear-gradient(#fdfdfd, #e9e9e9); border: 1px solid #9c9c9c; border-radius: 2px; cursor: pointer; font-weight: 600; color: #222; text-decoration: none; }
.btn-run:hover { background: linear-gradient(#f4f9ff, #dceafc); border-color: var(--blue); }
.fine { font-size: 12px; color: var(--ink-2); margin: 6px 0; }
.link { display: inline-block; color: var(--blue); }
.credito { padding: 6px 8px; background: #fff8e1; border-left: 3px solid #f7a600; color: #333; }
.msg-err { color: var(--err); font-weight: 600; }
.msg-ok { color: var(--ok); font-weight: 600; }

/* Pregunta */
.q-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; font-size: 12px; color: var(--ink-2); }
.chip { padding: 1px 8px; border: 1px solid #b9d0f2; background: #eef4fd; color: var(--blue); border-radius: 10px; font-weight: 600; }
.q-text { margin: 0 0 14px; font-size: 16px; line-height: 1.45; font-weight: 600; color: #222; }
.q-hint { font-size: 12px; color: var(--ink-3); margin: -6px 0 12px; }
.opts { display: grid; gap: 8px; margin: 0; padding: 0; border: 0; }
.opt { display: grid; grid-template-columns: 26px 1fr; gap: 8px; align-items: start; padding: 9px 10px; border: 1px solid var(--line); border-radius: 2px; cursor: pointer; background: #fff; line-height: 1.4; }
.opt:hover { background: #f5f9ff; border-color: #a9c4ec; }
.opt input { position: absolute; opacity: 0; pointer-events: none; }
.opt .let { display: grid; place-items: center; width: 22px; height: 22px; border: 1px solid #999; border-radius: 50%; font: 700 12px var(--mono); color: #555; background: #fff; }
.opt:has(input:checked) { background: var(--sel); border-color: var(--blue); }
.opt:has(input:checked) .let { background: var(--blue); border-color: var(--blue); color: #fff; }
.opt:has(input:focus-visible) { outline: 2px solid var(--blue); outline-offset: 1px; }
.opt.right { background: #e8f6eb; border-color: var(--ok); }
.opt.right .let { background: var(--ok); border-color: var(--ok); color: #fff; }
.opt.wrong { background: #fdecea; border-color: var(--err); }
.opt.wrong .let { background: var(--err); border-color: var(--err); color: #fff; }
.opts.locked .opt { cursor: default; }
.q-nav { display: flex; gap: 8px; margin-top: 16px; }
.q-nav button { flex: 1; padding: 6px; border: 1px solid #9c9c9c; background: linear-gradient(#fdfdfd, #e9e9e9); border-radius: 2px; cursor: pointer; }
.q-nav button:disabled { opacity: .45; cursor: default; }
.expl { margin-top: 14px; padding: 10px 12px; border-left: 3px solid var(--blue); background: #f4f8fe; font-size: 13px; }
.expl b { color: var(--blue); }

/* Nota final */
.score { text-align: center; padding: 8px 0 4px; }
.score .big { font: 700 54px/1 var(--mono); }
.score .big small { font-size: 20px; color: var(--ink-3); }
.score.ap .big { color: var(--ok); }
.score.rep .big { color: var(--err); }
.score .tag { display: inline-block; margin: 8px 0 12px; padding: 2px 12px; border-radius: 10px; font-weight: 700; font-size: 12px; color: #fff; }
.score.ap .tag { background: var(--ok); }
.score.rep .tag { background: var(--err); }
.score p { margin: 4px 0; color: var(--ink-2); }

/* Output */
.wb-output { grid-area: out; display: flex; flex-direction: column; min-height: 0; border-top: 1px solid var(--line); background: #fff; }
.out-sel { padding: 4px 10px; border-bottom: 1px solid var(--line-soft); color: #333; background: var(--win); flex: none; }
.out-wrap { flex: 1; overflow: auto; }
.out { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.out th { position: sticky; top: 0; z-index: 1; text-align: left; font-weight: 400; color: #333; padding: 3px 8px; background: #fafafa; border-bottom: 1px solid var(--line-soft); border-right: 1px solid var(--line-soft); }
.out td { padding: 3px 8px; border-bottom: 1px solid #f0f0f0; white-space: nowrap; vertical-align: top; }
.out td:nth-child(5), .out td:nth-child(4) { white-space: normal; }
.out tr:hover td { background: #f5f9ff; }
.out tr.err td { color: #a3271e; }
.out tr.warn td { color: #8a5a00; }
.st { display: inline-grid; place-items: center; width: 16px; height: 16px; border-radius: 50%; color: #fff; font-size: 10px; font-weight: 700; }
.st.ok { background: var(--ok); }
.st.err { background: var(--err); }
.st.warn { background: var(--warn); }
.st.info { background: var(--blue); }
.out tr.tot td { font-weight: 700; background: #f4f8fe; }

/* Result grid (panel docente) */
.grid-head { padding: 4px 10px; font-size: 12.5px; background: var(--win); border-bottom: 1px solid var(--line-soft); color: #333; }
.grid-wrap { flex: 1; overflow: auto; }
.grid { border-collapse: collapse; font-size: 12.5px; min-width: 100%; }
.grid th, .grid td { border: 1px solid #e2e2e2; padding: 3px 8px; white-space: nowrap; text-align: left; }
.grid th { background: #f6f6f6; font-weight: 600; position: sticky; top: 0; }
.grid tr:nth-child(even) td { background: #fbfbfb; }
.grid .num { text-align: right; font-family: var(--mono); }
.grid .nota { font-weight: 700; }
.ap { color: var(--ok); }
.rep { color: var(--err); }
.grid-empty { padding: 20px; color: var(--ink-3); }
.grid tr.pend td { color: #999; font-style: italic; }
a.qtab { text-decoration: none; }
.mini { padding: 1px 8px; font-size: 12px; border: 1px solid #aaa; background: #f4f4f4; cursor: pointer; border-radius: 2px; }

/* Diálogo de confirmación estilo Windows */
.dlg-back { position: fixed; inset: 0; background: rgba(0,0,0,.25); display: grid; place-items: center; z-index: 50; padding: 16px; }
.dlg-back[hidden] { display: none; }
.dlg { width: min(440px, 100%); background: #fff; border: 1px solid #777; box-shadow: 0 10px 30px rgba(0,0,0,.3); }
.dlg-title { padding: 6px 10px; border-bottom: 1px solid var(--line-soft); font-size: 12.5px; }
.dlg-body { display: flex; gap: 14px; padding: 18px 16px; align-items: flex-start; }
.dlg-ic { flex: none; width: 34px; height: 34px; border-radius: 50%; background: var(--blue); color: #fff; display: grid; place-items: center; font: 700 20px var(--ui); }
.dlg-body p { margin: 4px 0 0; }
.dlg-btns { display: flex; justify-content: flex-end; gap: 8px; padding: 10px 14px; background: var(--win); border-top: 1px solid var(--line-soft); }
.dlg-btns button { min-width: 84px; padding: 4px 10px; border: 1px solid #999; background: linear-gradient(#fdfdfd, #e9e9e9); cursor: pointer; }
.dlg-btns button:first-child { border-color: var(--blue); }

/* Barra de estado con créditos */
.wb-status { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 0 12px; background: #1e5fb8; color: #fff; font-size: 12px; white-space: nowrap; overflow: hidden; }
.wb-status span { display: inline-flex; align-items: center; gap: 6px; overflow: hidden; text-overflow: ellipsis; }
.wb-status img { background: #fff; border-radius: 3px; padding: 1px; }
.wb-status-r { opacity: .85; }

/* ---------- pantallas medianas y celulares ---------- */
@media (max-width: 1180px) {
  .wb-main { grid-template-columns: 200px minmax(0, 1fr) 330px; }
}
@media (max-width: 900px) {
  .wb { height: auto; min-height: 100dvh; grid-template-rows: auto; border: 0; }
  .wb-menu, .wb-maintool, .wb-winbtn, .wb-nav { display: none; }
  .wb-title { position: sticky; top: 0; z-index: 5; padding: 6px 16px; border-bottom: 1px solid var(--line); }
  .wb-main { display: flex; flex-direction: column; min-width: 0; }
  .wb-center, .wb-side, .wb-output { min-width: 0; max-width: 100vw; }
  .wb-center { border-right: 0; }
  .editor { flex: none; max-height: 52vh; font-size: 13px; }
  .ln .no { width: 32px; }
  .ln .mk { width: 14px; }
  .side-body { padding: 16px; overflow: visible; }
  .wb-output { max-height: 50vh; }
  .wb-sidetabs { display: none; }
  .wb-status { flex-direction: column; align-items: flex-start; gap: 2px; padding: 8px 16px; white-space: normal; }
  .out td:nth-child(3), .out th:nth-child(3), .out td:nth-child(6), .out th:nth-child(6) { display: none; }
}