/* Laboratorios interactivos de Python — Programación III
   Colores con significado: azul = Python, violeta = PHP, verde azulado = SQL, ámbar = Java */
:root{
  --paper:#F3F5F8; --surface:#FFFFFF; --ink:#16233B; --muted:#56627A; --line:#D5DBE5;
  --py:#2F6CA3; --py-soft:#E3EDF7; --amber:#B8860B; --amber-soft:#FBF3DC;
  --php:#5E62A6; --php-soft:#ECECF7; --sql:#1C7A6B; --sql-soft:#E0F2EE;
  --java:#B5532B; --java-soft:#F8E9E2;
  --ok:#23804A; --ok-soft:#E2F3E8; --bad:#B42318; --bad-soft:#FBE7E5;
  --code-bg:#0F1828; --code-ink:#DDE5F2;
  --radius-s:6px; --radius-m:10px;
  --font:"Atkinson Hyperlegible",Verdana,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",Consolas,"Courier New",monospace;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#0D1422; --surface:#151F33; --ink:#E4EAF4; --muted:#9AA6BD; --line:#2A3752;
    --py:#7DB3E6; --py-soft:#1A2B45; --amber:#E8C15A; --amber-soft:#2E2715;
    --php:#A9ADE8; --php-soft:#23254A; --sql:#5CC9B4; --sql-soft:#12302B;
    --java:#E8946E; --java-soft:#3A2218;
    --ok:#5BCB8A; --ok-soft:#143322; --bad:#F2877D; --bad-soft:#3B1714;
    --code-bg:#0A101C;
  }
}
:root[data-theme="dark"]{
  --paper:#0D1422; --surface:#151F33; --ink:#E4EAF4; --muted:#9AA6BD; --line:#2A3752;
  --py:#7DB3E6; --py-soft:#1A2B45; --amber:#E8C15A; --amber-soft:#2E2715;
  --php:#A9ADE8; --php-soft:#23254A; --sql:#5CC9B4; --sql-soft:#12302B;
  --java:#E8946E; --java-soft:#3A2218;
  --ok:#5BCB8A; --ok-soft:#143322; --bad:#F2877D; --bad-soft:#3B1714;
  --code-bg:#0A101C;
}
*,*::before,*::after{box-sizing:inherit}
html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 72px);-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.6}
img{max-width:100%}
a{color:var(--py)}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em}
h1{font-size:clamp(1.9rem,4.5vw,2.8rem);letter-spacing:-.01em}
h2{font-size:clamp(1.45rem,3vw,1.85rem);margin-top:0}
h3{font-size:1.15rem;margin-top:1.6em}
p{margin:0 0 1em}
code{font-family:var(--mono);font-size:.88em;background:var(--py-soft);padding:.08em .35em;border-radius:4px}
small,.muted{color:var(--muted)}

/* Barra superior */
.topbar{position:sticky;top:0;z-index:30;padding-top:env(safe-area-inset-top,0px);
  top:env(safe-area-inset-top,0px);background:var(--surface);border-bottom:1px solid var(--line)}
.topbar-in{display:flex;align-items:center;gap:14px;padding:10px 18px;max-width:1320px;margin:0 auto}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:700;min-width:0}
.brand-mark{width:30px;height:30px;border-radius:7px;display:grid;place-items:center;flex:none;
  background:linear-gradient(135deg,var(--py) 0 50%,var(--amber) 50% 100%);color:#fff;font-family:var(--mono);font-size:13px}
.brand span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar .spacer{flex:1}
.btn{font:inherit;font-size:.92rem;border:1px solid var(--line);background:var(--surface);color:var(--ink);
  padding:7px 13px;border-radius:var(--radius-s);cursor:pointer;display:inline-flex;align-items:center;gap:6px;text-decoration:none;line-height:1.3}
.btn:hover{border-color:var(--py)}
.btn.primary{background:var(--py);border-color:var(--py);color:#fff}
.btn.primary:hover{filter:brightness(1.08)}
:root[data-theme="dark"] .btn.primary{color:#0D1422}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .btn.primary{color:#0D1422}}
.btn.small{padding:4px 10px;font-size:.84rem}
.btn[disabled]{opacity:.55;cursor:wait}
.icon-btn{width:38px;height:38px;justify-content:center;padding:0}
.teacher-pill{display:none;white-space:nowrap;font-size:.82rem;border-radius:999px;padding:4px 12px;background:var(--amber-soft);color:var(--ink);border:1px solid var(--amber)}
body.has-teacher .teacher-pill{display:inline-flex}

/* Estructura del laboratorio */
.layout{display:grid;grid-template-columns:270px minmax(0,1fr);gap:0;max-width:1320px;margin:0 auto}
.sidebar{position:sticky;top:calc(env(safe-area-inset-top,0px) + 59px);align-self:start;height:calc(100vh - 59px - env(safe-area-inset-top,0px));
  overflow:auto;padding:22px 16px 40px 18px;border-right:1px solid var(--line)}
.sidebar h2{font-size:.95rem;color:var(--muted);font-weight:700;margin:0 0 10px}
.progress{height:6px;background:var(--line);border-radius:3px;overflow:hidden;margin:6px 0 4px}
.progress i{display:block;height:100%;width:0;background:var(--ok);transition:width .4s}
.progress-label{font-size:.82rem;color:var(--muted);margin-bottom:16px}
.toc{list-style:none;margin:0;padding:0;counter-reset:m}
.toc li{counter-increment:m}
.toc a{display:grid;grid-template-columns:28px 1fr;gap:4px;padding:6px 8px;border-radius:var(--radius-s);
  text-decoration:none;color:var(--ink);font-size:.93rem;line-height:1.35}
.toc a::before{content:counter(m);font-family:var(--mono);font-size:.8rem;color:var(--muted);padding-top:2px}
.toc a:hover{background:var(--py-soft)}
.toc a.active{background:var(--py-soft);font-weight:700}
.toc a.done::before{content:"✓";color:var(--ok);font-weight:700}
.main{padding:28px clamp(16px,4vw,48px) 80px;min-width:0}
.lab-head{max-width:880px;margin-bottom:34px}
.lab-head .kicker{color:var(--py);font-weight:700;margin-bottom:6px}
.lab-head p.lead{font-size:1.12rem;color:var(--muted);max-width:66ch}
.objectives{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;padding:0;list-style:none}
.objectives li{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:.88rem}

.module{max-width:880px;padding:30px 0 34px;border-top:1px solid var(--line)}
.module-num{font-family:var(--mono);color:var(--muted);font-size:.9rem}
.module > p,.module > ul,.module > ol{max-width:72ch}
.module-foot{display:flex;justify-content:flex-end;margin-top:18px}
.mark-done{font-size:.9rem}
.mark-done.is-done{background:var(--ok-soft);border-color:var(--ok);color:var(--ink)}

/* Callouts */
.callout{border-left:4px solid var(--py);background:var(--py-soft);padding:12px 16px;border-radius:0 var(--radius-s) var(--radius-s) 0;margin:16px 0;max-width:76ch}
.callout.warn{border-color:var(--amber);background:var(--amber-soft)}
.callout.java{border-color:var(--java);background:var(--java-soft)}
.callout p:last-child{margin-bottom:0}
.callout strong:first-child{display:block;margin-bottom:2px}
.teacher{display:none;border:1px dashed var(--amber);background:var(--amber-soft);padding:12px 16px;border-radius:var(--radius-s);margin:16px 0;max-width:76ch}
body.teacher-on .teacher{display:block}
.teacher::before{content:"Nota docente";display:block;font-weight:700;color:var(--amber);margin-bottom:4px}
.teacher.solution::before{content:"Solución de referencia (solo docente)"}

/* Bloques de código */
.code-block{position:relative;margin:14px 0;border-radius:var(--radius-m);background:var(--code-bg);color:var(--code-ink);
  border-left:4px solid var(--py);overflow:hidden}
.code-block[data-lang="php"]{border-left-color:#8E92D8}
.code-block[data-lang="sql"]{border-left-color:#3FBFA6}
.code-block[data-lang="java"]{border-left-color:#E0845A}
.code-head{display:flex;align-items:center;gap:8px;padding:6px 10px 6px 14px;font-size:.8rem;color:#9FB0CC;border-bottom:1px solid #1F2B42}
.code-head .lang{font-weight:700}
.code-head .file{font-family:var(--mono);color:#7E8FAD;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.code-head .spacer{flex:1}
.code-head button{font:inherit;font-size:.78rem;background:transparent;border:1px solid #2B3A57;color:#C9D5EA;border-radius:5px;padding:2px 8px;cursor:pointer}
.code-head button:hover{border-color:#6FA8DC}
pre.hl{margin:0;padding:14px 16px;overflow-x:auto;font-family:var(--mono);font-size:.86rem;line-height:1.6;tab-size:4;white-space:pre}
.tk-kw{color:#F2CC4B}.tk-str{color:#9FE0A8}.tk-num{color:#F7A8A0}.tk-com{color:#7D8BA6;font-style:italic}
.tk-fn{color:#8EC5FF}.tk-bi{color:#CDB0FF}.tk-var{color:#FF9EC7}.tk-dec{color:#FFB86B}

.compare{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:14px;margin:14px 0}
.compare .code-block{margin:0}

/* Editor ejecutable */
.runner{margin:18px 0;border-radius:var(--radius-m);background:var(--code-bg);overflow:hidden;border-left:4px solid var(--py)}
.editor{position:relative;font-family:var(--mono);font-size:.86rem;line-height:1.6}
.editor pre,.editor textarea{margin:0;padding:14px 16px;font:inherit;line-height:inherit;tab-size:4;white-space:pre;border:0;letter-spacing:0;word-spacing:0}
.editor pre{pointer-events:none;overflow:hidden;color:var(--code-ink);min-height:100%}
.editor textarea{position:absolute;inset:0;width:100%;height:100%;resize:none;background:transparent;color:transparent;
  caret-color:#FFD76A;overflow-x:auto;overflow-y:hidden;outline:none}
.editor textarea::selection{background:rgba(111,168,220,.35);color:transparent}
.editor textarea:focus-visible{box-shadow:inset 0 0 0 2px #6FA8DC}
.run-bar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:8px 10px;border-top:1px solid #1F2B42;background:#0C1422}
.run-bar .btn{background:#15223A;color:#DDE5F2;border-color:#2B3A57}
.run-bar .btn.primary{background:#FFD43B;border-color:#FFD43B;color:#0F1828;font-weight:700}
.run-bar .status{font-size:.8rem;color:#8FA1C0;margin-left:auto}
.run-inputs{display:flex;gap:8px;align-items:center;padding:8px 12px;background:#0C1422;border-top:1px solid #1F2B42;color:#9FB0CC;font-size:.82rem;flex-wrap:wrap}
.run-inputs input{flex:1;min-width:160px;font-family:var(--mono);font-size:.84rem;background:#15223A;border:1px solid #2B3A57;color:#fff;border-radius:5px;padding:5px 8px}
.output{margin:0;padding:12px 16px;font-family:var(--mono);font-size:.85rem;line-height:1.55;white-space:pre-wrap;word-break:break-word;
  background:#060B14;color:#CFE8D6;border-top:1px solid #1F2B42;max-height:340px;overflow:auto;display:none}
.output.show{display:block}
.output .err{color:#FF9B8F}
.output .sys{color:#7E8FAD}
.verdict{padding:8px 14px;font-size:.88rem;display:none}
.verdict.ok{display:block;background:var(--ok-soft);color:var(--ink);border-top:2px solid var(--ok)}
.verdict.bad{display:block;background:var(--bad-soft);color:var(--ink);border-top:2px solid var(--bad)}

/* Retos */
.challenge{border:1px solid var(--line);background:var(--surface);border-radius:var(--radius-m);padding:16px 18px;margin:22px 0}
.challenge h4{margin:0 0 6px;color:var(--py)}
.challenge h4::before{content:"Reto  ";color:var(--amber)}

/* Tablas */
.table-wrap{overflow-x:auto;margin:14px 0;border:1px solid var(--line);border-radius:var(--radius-m);background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:.92rem}
th,td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--py-soft);font-weight:700;white-space:nowrap}
tr:last-child td{border-bottom:0}
td code{white-space:nowrap}

/* Pestañas */
.tabs{margin:14px 0}
.tab-list{display:flex;gap:4px;flex-wrap:wrap;border-bottom:1px solid var(--line)}
.tab-list button{font:inherit;font-size:.9rem;background:none;border:0;border-bottom:3px solid transparent;padding:8px 12px;cursor:pointer;color:var(--muted)}
.tab-list button[aria-selected="true"]{color:var(--ink);font-weight:700;border-bottom-color:var(--py)}
.tab-list button[data-lang="php"][aria-selected="true"]{border-bottom-color:var(--php)}
.tab-list button[data-lang="sql"][aria-selected="true"]{border-bottom-color:var(--sql)}
.tab-panel[hidden]{display:none}

/* Widgets */
.widget{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-m);padding:16px;margin:18px 0}
.widget-title{font-weight:700;margin-bottom:10px}
.field{display:flex;flex-direction:column;gap:4px;font-size:.88rem}
.field input,.field select{font:inherit;font-size:.95rem;padding:7px 9px;border:1px solid var(--line);border-radius:var(--radius-s);background:var(--paper);color:var(--ink)}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end}

.lang-dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:5px;vertical-align:middle}
.lang-dot.py{background:var(--py)}.lang-dot.php{background:var(--php)}.lang-dot.sql{background:var(--sql)}.lang-dot.java{background:var(--java)}

.footer{max-width:880px;padding:30px 0;color:var(--muted);font-size:.88rem;border-top:1px solid var(--line)}

/* Navegación móvil */
.mobile-toc{display:none}
@media (max-width:900px){
  .layout{grid-template-columns:1fr}
  .sidebar{display:none}
  .mobile-toc{display:block;padding:10px 16px;border-bottom:1px solid var(--line);background:var(--surface)}
  .mobile-toc select{width:100%;font:inherit;padding:8px;border-radius:var(--radius-s);border:1px solid var(--line);background:var(--paper);color:var(--ink)}
  .brand span{max-width:46vw}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
@media print{
  .topbar,.sidebar,.mobile-toc,.run-bar,.module-foot{display:none!important}
  .layout{display:block}
  .output{display:block;max-height:none}
  body.teacher-on .teacher{display:block}
}
pre code,.editor code{background:none;padding:0;font-size:inherit;color:inherit;border-radius:0}
.log code{background:none;padding:0}
[hidden]{display:none!important}