:root{
  --bg:#0F0F1A;--bg2:#161626;
  --panel:rgba(255,255,255,.04);--panel-h:rgba(255,255,255,.07);
  --border:rgba(255,255,255,.08);--border-h:rgba(255,255,255,.15);
  --text:#F0ECE4;--muted:#8A8499;
  --blue:#1F66F2;--gold:#EBD23C;--pink:#D43C9E;
  --orange:#E8822E;--green:#2FB57A;--purple:#7A33B5;
  --r:16px;--shadow:0 8px 32px rgba(0,0,0,.4);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased;min-height:100%;overflow-x:hidden}
.wrap{max-width:900px;margin:0 auto;padding:20px 16px 100px}
.pixel{font-family:'Pixelify Sans',monospace}
.eyebrow{font-size:11px;letter-spacing:3px;text-transform:uppercase;color:var(--muted)}
/* HUD */
.hud{display:flex;align-items:center;gap:6px;flex-wrap:wrap;background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));border:1px solid var(--border);border-radius:var(--r);padding:10px 14px;position:sticky;top:10px;z-index:30;backdrop-filter:blur(12px);box-shadow:var(--shadow)}
.hud-brand{font-family:'Pixelify Sans',monospace;font-size:16px;color:var(--gold);line-height:1}
.hud-brand small{display:block;font-size:9px;letter-spacing:2px;color:var(--muted);font-family:system-ui;margin-top:2px}
.hud-stat{display:flex;flex-direction:column;align-items:flex-start;line-height:1;padding:3px 10px;border-left:1px solid var(--border)}
.hud-stat b{font-family:'Pixelify Sans',monospace;font-size:15px}
.hud-stat span{font-size:9px;letter-spacing:1.5px;color:var(--muted);text-transform:uppercase;margin-top:3px}
.hud-spacer{flex:1}
.hud-btn{font-size:12px;color:var(--text);background:rgba(255,255,255,.06);border:1px solid var(--border);padding:6px 12px;border-radius:99px;cursor:pointer;transition:.15s}
.hud-btn:hover{background:rgba(255,255,255,.12)}
/* SCREENS */
.screen{display:none;animation:fade .3s ease}
.screen.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
/* HOME */
.home-title{font-family:'Pixelify Sans',monospace;font-size:clamp(36px,8vw,64px);line-height:1;margin:20px 0 6px}
.home-title .accent{color:var(--gold)}
.home-lead{color:var(--muted);font-size:15px;line-height:1.6;max-width:50ch;margin-bottom:28px}
.stats-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:32px}
.stat-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--r);padding:14px 16px}
.stat-card .val{font-family:'Pixelify Sans',monospace;font-size:28px;line-height:1}
.stat-card .label{font-size:11px;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);margin-top:4px}
.sec-head{display:flex;align-items:center;justify-content:space-between;margin:24px 0 14px}
.sec-head h2{font-family:'Pixelify Sans',monospace;font-size:20px}
/* ZONES */
.zones-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.zone-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--r);padding:18px;cursor:pointer;transition:.15s;border-left:3px solid transparent}
.zone-card:hover{background:var(--panel-h);transform:translateY(-2px)}
.zone-icon{font-size:28px;margin-bottom:10px}
.zone-name{font-family:'Pixelify Sans',monospace;font-size:15px;margin-bottom:4px}
.zone-desc{font-size:12px;color:var(--muted);line-height:1.5}
.zone-prog{margin-top:12px;height:3px;background:rgba(255,255,255,.1);border-radius:99px}
.zone-prog-fill{height:100%;border-radius:99px;transition:width .3s}
.zone-sub{font-size:11px;color:var(--muted);margin-top:6px}
/* BUSCADOR DE TEMAS (home) */
.search-box{margin:0 0 14px}
.topic-search-input{width:100%;background:var(--panel);border:1px solid var(--border);border-radius:var(--r);padding:13px 16px;color:var(--text);font-family:'Pixelify Sans',monospace;font-size:15px;transition:.15s}
.topic-search-input::placeholder{color:var(--muted)}
.topic-search-input:focus{outline:none;border-color:var(--blue);background:var(--panel-h)}
.search-results:not(:empty){margin-top:10px;display:grid;gap:6px}
.search-count{font-size:11px;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);font-family:'Pixelify Sans',monospace;padding:2px 2px 4px}
.search-result{display:block;width:100%;text-align:left;background:var(--panel);border:1px solid var(--border);border-left:3px solid var(--border);border-radius:10px;padding:11px 14px;cursor:pointer;transition:.15s}
.search-result:hover{background:var(--panel-h);border-color:var(--border-h);transform:translateX(2px)}
.search-result .sr-zone{font-family:'Pixelify Sans',monospace;font-size:13px;color:var(--text);display:block;line-height:1.3}
.search-result .sr-zone b{font-weight:600}
.search-result .sr-snippet{font-size:12.5px;color:var(--muted);line-height:1.5;margin-top:4px;display:block}
.search-result mark{background:rgba(235,210,60,.25);color:var(--gold);border-radius:3px;padding:0 2px}
.search-empty{font-size:13px;color:var(--muted);font-style:italic;padding:10px 4px}
.mode-btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.mode-btn{font-family:'Pixelify Sans',monospace;font-size:14px;padding:14px 24px;border-radius:var(--r);border:none;cursor:pointer;transition:.15s;line-height:1}
.mode-btn:hover{transform:translateY(-2px);filter:brightness(1.1)}
.mode-btn.secondary{background:var(--purple);color:#fff}
.mode-btn.accent{background:var(--orange);color:#fff}
/* STUDY */
.study-header{display:flex;align-items:center;gap:12px;margin:16px 0 24px;flex-wrap:wrap}
.back-btn{font-size:13px;color:var(--muted);background:none;border:none;cursor:pointer;padding:6px 0;display:flex;align-items:center;gap:6px}
.back-btn:hover{color:var(--text)}
.study-zone-name{font-family:'Pixelify Sans',monospace;font-size:22px}
.study-prog{font-size:13px;color:var(--muted);margin-left:auto}
/* FLASHCARD */
.flashcard-wrap{perspective:1000px;max-width:680px;margin:0 auto}
.flashcard{width:100%;min-height:260px;position:relative;transform-style:preserve-3d;transition:transform .4s;cursor:pointer}
.flashcard.flipped{transform:rotateY(180deg)}
.flashcard.has-mc{cursor:default}
.card-face{position:absolute;width:100%;min-height:260px;background:var(--panel);border:1px solid var(--border);border-radius:var(--r);padding:32px;backface-visibility:hidden;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}
.card-face.back{transform:rotateY(180deg);background:rgba(31,102,242,.08);border-color:rgba(31,102,242,.25);text-align:left;justify-content:flex-start;overflow-y:auto}
.card-q{font-family:'Pixelify Sans',monospace;font-size:18px;line-height:1.4;margin-bottom:12px}
.card-hint{font-size:12px;color:var(--muted)}
.card-tap{font-size:11px;color:var(--muted);margin-top:auto;letter-spacing:1px;text-transform:uppercase}
.card-label{font-size:10px;letter-spacing:2px;text-transform:uppercase;color:var(--blue);margin-bottom:14px}
.card-a{font-size:14px;line-height:1.75;color:var(--text)}
.card-a code,.card-a pre{font-family:monospace;background:rgba(0,0,0,.3);border-radius:6px}
.card-a code{padding:1px 5px;font-size:13px;color:var(--orange)}
.card-a pre{padding:10px 14px;font-size:12px;overflow-x:auto;line-height:1.7;border-left:3px solid var(--blue);margin:10px 0}
/* MULTIPLE CHOICE */
.mc-wrap{width:100%;margin-top:12px}
.mc-opt{display:flex;align-items:center;gap:12px;width:100%;padding:11px 14px;background:var(--panel);border:1px solid var(--border);border-radius:10px;cursor:pointer;transition:.2s;font-size:14px;color:var(--text);text-align:left;margin-bottom:8px}
.mc-opt:hover:not(:disabled){background:var(--panel-h);border-color:var(--border-h);transform:translateX(2px)}
.mc-opt:disabled{cursor:default}
.mc-opt.correct{background:rgba(47,181,122,.2)!important;border-color:var(--green)!important;color:var(--green)!important;opacity:1!important}
.mc-opt.wrong{background:rgba(212,60,158,.15)!important;border-color:var(--pink)!important}
.mc-letter{font-family:'Pixelify Sans',monospace;font-size:11px;background:rgba(255,255,255,.1);border-radius:50%;min-width:22px;height:22px;display:flex;align-items:center;justify-content:center}
.mc-feedback{font-size:13px;font-family:'Pixelify Sans',monospace;margin-top:10px;padding:8px 14px;border-radius:8px;text-align:center}
.mc-feedback.ok{background:rgba(47,181,122,.15);color:var(--green)}
.mc-feedback.ko{background:rgba(212,60,158,.15);color:var(--pink)}
/* CONCEPT PANEL (modo estudio: contenido + multiple choice) */
.concept-panel{max-width:720px;margin:0 auto;background:linear-gradient(180deg,var(--panel),rgba(255,255,255,.015));border:1px solid var(--border);border-radius:var(--r);padding:26px 28px;box-shadow:var(--shadow);animation:fade .3s ease}
.concept-tag{font-family:'Pixelify Sans',monospace;font-size:11px;letter-spacing:2px;text-transform:uppercase;color:var(--blue)}
.concept-title{font-family:'Pixelify Sans',monospace;font-size:23px;line-height:1.1;margin:6px 0 16px}
.concept-body{font-size:14.5px;line-height:1.8;color:var(--text)}
.concept-body strong{color:var(--text)}
.concept-body em{color:var(--muted)}
.concept-body code{font-family:monospace;background:rgba(0,0,0,.3);padding:1px 5px;border-radius:4px;font-size:13px;color:var(--orange)}
.concept-body pre{font-family:monospace;font-size:12px;background:rgba(0,0,0,.35);padding:14px;border-radius:10px;overflow-x:auto;line-height:1.7;border-left:3px solid var(--orange);margin:12px 0;color:var(--text)}
.concept-ej{margin-top:16px;border-left:3px solid var(--gold);background:rgba(235,210,60,.07);border-radius:0 12px 12px 0;padding:12px 16px;font-size:13.5px;line-height:1.7;color:var(--text)}
.concept-ej b{display:block;font-family:'Pixelify Sans',monospace;font-size:11px;letter-spacing:1.5px;text-transform:uppercase;color:var(--gold);margin-bottom:5px}
.concept-quiz{font-family:'Pixelify Sans',monospace;font-size:16px;line-height:1.45;margin:24px 0 14px;padding-top:20px;border-top:1px solid var(--border)}
.concept-quiz .quiz-label{display:block;font-size:10px;letter-spacing:2px;text-transform:uppercase;color:var(--purple);margin-bottom:8px;font-family:'Pixelify Sans',monospace}
/* CARD NAV */
.card-nav{display:flex;align-items:center;justify-content:space-between;margin-top:20px;max-width:680px;margin-inline:auto}
.nav-btn{font-family:'Pixelify Sans',monospace;font-size:13px;background:var(--panel);border:1px solid var(--border);color:var(--text);padding:10px 20px;border-radius:99px;cursor:pointer;transition:.15s}
.nav-btn:hover{background:var(--panel-h)}
.nav-btn:disabled{opacity:.3;cursor:default}
.card-counter{font-size:13px;color:var(--muted);font-family:'Pixelify Sans',monospace}
#btn-reset-card{font-size:12px;color:var(--muted);padding:7px 16px}
#btn-reset-card:hover{background:var(--panel-h);color:var(--text)}
/* "Continuá donde quedaste" — home */
.continue-btn{display:flex;flex-direction:column;gap:3px;width:100%;text-align:left;background:var(--panel);border:1px solid var(--border);border-radius:var(--r);padding:14px 18px;margin:18px 0 4px;cursor:pointer;transition:.15s}
.continue-btn:hover{background:var(--panel-h)}
.continue-lbl{font-family:'Pixelify Sans',monospace;font-size:13px;color:var(--text)}
.continue-where{font-size:13px;font-weight:600}
/* APPLIED */
.mode-badge{font-size:11px;letter-spacing:2px;text-transform:uppercase;padding:4px 10px;border-radius:99px;font-family:'Pixelify Sans',monospace;margin-bottom:6px;display:inline-block}
.badge-aplicado{background:rgba(232,130,46,.15);color:var(--orange)}
.badge-simulacro{background:rgba(122,51,181,.15);color:var(--purple)}
.mode-desc{font-size:13px;color:var(--muted);margin-bottom:20px;line-height:1.6;max-width:55ch}
.scenario-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--r);padding:24px;margin-bottom:16px}
.scenario-title{font-family:'Pixelify Sans',monospace;font-size:16px;margin-bottom:10px}
.scenario-body{font-size:14px;line-height:1.7;color:var(--muted);margin-bottom:16px}
.reveal-btn{font-size:13px;background:var(--panel);border:1px solid var(--border);color:var(--muted);padding:8px 16px;border-radius:99px;cursor:pointer;transition:.15s}
.reveal-btn:hover{color:var(--text);border-color:var(--border-h)}
.scenario-answer{margin-top:16px;padding-top:16px;border-top:1px solid var(--border);display:none}
.scenario-answer.shown{display:block}
.scenario-answer h4{font-family:'Pixelify Sans',monospace;font-size:11px;color:var(--green);margin-bottom:10px;letter-spacing:2px;text-transform:uppercase}
.scenario-answer p{font-size:14px;line-height:1.7;margin-bottom:8px}
.scenario-answer code{font-family:monospace;background:rgba(0,0,0,.3);padding:1px 5px;border-radius:4px;font-size:13px;color:var(--orange)}
.flow{font-family:monospace;font-size:13px;background:rgba(0,0,0,.3);padding:12px 16px;border-radius:10px;margin-top:8px;line-height:1.9;border-left:3px solid var(--blue)}
/* SIMULACRO */
.sim-intro{padding:20px 0 10px}
.sim-title{font-family:'Pixelify Sans',monospace;font-size:26px;margin-bottom:6px}
.sim-sub{color:var(--muted);font-size:13px;line-height:1.6;margin-bottom:20px}
.punto-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--r);padding:24px;margin-bottom:16px}
.punto-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.punto-num{font-family:'Pixelify Sans',monospace;font-size:13px;background:var(--purple);color:#fff;padding:4px 10px;border-radius:99px;white-space:nowrap}
.punto-label{font-family:'Pixelify Sans',monospace;font-size:16px}
.punto-body{font-size:14px;line-height:1.75;color:var(--muted);margin-bottom:16px}
.punto-body code{font-family:monospace;background:rgba(0,0,0,.3);padding:1px 5px;border-radius:4px;font-size:13px;color:var(--orange)}
.punto-body pre{font-family:monospace;font-size:12px;background:rgba(0,0,0,.35);padding:14px;border-radius:10px;overflow-x:auto;line-height:1.7;border-left:3px solid var(--orange);margin:12px 0;color:var(--text)}
.punto-reveal{font-size:13px;background:none;border:1px solid var(--border);color:var(--muted);padding:8px 16px;border-radius:99px;cursor:pointer;transition:.15s}
.punto-reveal:hover{color:var(--text);border-color:var(--border-h)}
.punto-answer{margin-top:16px;padding-top:16px;border-top:1px solid var(--border);display:none}
.punto-answer.shown{display:block}
.punto-answer-label{font-size:10px;letter-spacing:2px;text-transform:uppercase;color:var(--green);margin-bottom:12px;font-family:'Pixelify Sans',monospace}
.punto-answer p{font-size:14px;line-height:1.75;margin-bottom:8px;color:var(--text)}
.punto-answer code{font-family:monospace;background:rgba(0,0,0,.3);padding:1px 5px;border-radius:4px;font-size:13px;color:var(--green)}
.punto-answer pre{font-family:monospace;font-size:12px;background:rgba(0,0,0,.35);padding:14px;border-radius:10px;overflow-x:auto;line-height:1.7;border-left:3px solid var(--green);margin:10px 0;color:var(--text)}
/* V/F INTERACTIVE */
.vf-list{list-style:none;margin:14px 0 0}
.vf-item{display:flex;flex-direction:column;gap:8px;padding:10px 0;border-bottom:1px solid var(--border);font-size:14px;line-height:1.5;color:var(--text)}
.vf-row{display:flex;align-items:flex-start;gap:10px;width:100%}
.vf-just{width:100%;background:rgba(0,0,0,.22);border:1px solid var(--border);border-left:3px solid var(--pink);border-radius:8px;padding:8px 12px;color:var(--text);font-family:system-ui;font-size:13px;line-height:1.55;resize:vertical;min-height:52px}
.vf-just:focus{outline:none;border-color:var(--border-h);border-left-color:var(--pink)}
.vf-just::placeholder{color:var(--muted)}
.vf-just-r{display:block;margin-top:2px;color:var(--muted);font-size:13px}
.vf-just-r em{color:var(--pink);font-style:normal}
.vf-item:last-child{border-bottom:none}
.vf-num{font-family:'Pixelify Sans',monospace;font-size:12px;color:var(--muted);min-width:18px;margin-top:2px}
.vf-text{flex:1}
.vf-btns{display:flex;gap:6px;flex-shrink:0;margin-top:2px}
.vf-btn{padding:3px 12px;border-radius:6px;border:1px solid var(--border);background:var(--panel);color:var(--text);cursor:pointer;font-family:'Pixelify Sans',monospace;font-size:13px;transition:.15s;min-width:36px}
.vf-btn:hover:not(:disabled){background:var(--panel-h)}
.vf-btn:disabled{cursor:default}
.vf-btn.hit{background:rgba(47,181,122,.25);border-color:var(--green);color:var(--green)}
.vf-btn.miss{background:rgba(212,60,158,.2);border-color:var(--pink);color:var(--pink)}
.vf-btn.reveal-correct{background:rgba(47,181,122,.15);border-color:rgba(47,181,122,.5);color:var(--green)}
.vf-score{font-family:'Pixelify Sans',monospace;font-size:14px;margin-top:14px;padding:10px 16px;border-radius:10px;background:rgba(255,255,255,.04);border:1px solid var(--border);display:none}
/* MARK DONE */
.mark-done-btn{font-family:'Pixelify Sans',monospace;font-size:15px;background:var(--purple);color:#fff;border:none;padding:14px 28px;border-radius:var(--r);cursor:pointer;transition:.15s;margin:28px auto;display:block}
.mark-done-btn:hover{filter:brightness(1.15);transform:translateY(-2px)}
/* SIM CARDS (home) */
.sim-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.sim-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--r);padding:18px;border-left:3px solid var(--purple);display:flex;flex-direction:column;gap:8px;transition:.15s}
.sim-card:hover{background:var(--panel-h);transform:translateY(-2px)}
.sim-card .sim-n{font-size:11px;letter-spacing:2px;text-transform:uppercase;color:var(--purple);font-family:'Pixelify Sans',monospace}
.sim-card h3{font-family:'Pixelify Sans',monospace;font-size:16px;line-height:1.2}
.sim-card p{font-size:12px;color:var(--muted);line-height:1.5;flex:1}
.sim-card .sim-foot{display:flex;align-items:center;gap:10px;margin-top:6px}
.sim-start{font-family:'Pixelify Sans',monospace;font-size:13px;background:var(--purple);color:#fff;border:none;padding:9px 18px;border-radius:99px;cursor:pointer;transition:.15s}
.sim-start:hover{filter:brightness(1.15);transform:translateY(-1px)}
.sim-done{font-size:11px;color:var(--green);font-family:'Pixelify Sans',monospace}
/* EXAM */
.exam-q{background:var(--panel);border:1px solid var(--border);border-radius:var(--r);padding:22px;margin-bottom:14px}
.exam-q.warn{border-color:var(--pink);box-shadow:0 0 0 1px rgba(212,60,158,.25)}
.exam-qhead{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.exam-qnum{font-family:'Pixelify Sans',monospace;font-size:12px;background:var(--purple);color:#fff;padding:3px 10px;border-radius:99px;white-space:nowrap}
.exam-qtype{font-size:10px;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);font-family:'Pixelify Sans',monospace}
.exam-qtext{font-size:15px;line-height:1.6;margin-bottom:14px}
.exam-qtext code{font-family:monospace;background:rgba(0,0,0,.3);padding:1px 5px;border-radius:4px;font-size:13px;color:var(--orange)}
.exam-qtext pre{font-family:monospace;font-size:12px;background:rgba(0,0,0,.35);padding:14px;border-radius:10px;overflow-x:auto;line-height:1.7;border-left:3px solid var(--orange);margin:12px 0;color:var(--text)}
.exam-qtext ol,.exam-qtext ul{margin:10px 0 0 20px;line-height:2.1}
.exam-ta{width:100%;min-height:108px;background:rgba(0,0,0,.25);border:1px solid var(--border);border-radius:10px;padding:12px 14px;color:var(--text);font-family:system-ui;font-size:14px;line-height:1.6;resize:vertical}
.exam-ta:focus{outline:none;border-color:var(--border-h)}
.exam-opt{display:flex;align-items:center;gap:12px;width:100%;padding:11px 14px;background:var(--panel);border:1px solid var(--border);border-radius:10px;cursor:pointer;transition:.15s;font-size:14px;color:var(--text);text-align:left;margin-bottom:8px}
.exam-opt:hover{background:var(--panel-h);border-color:var(--border-h)}
.exam-opt.sel{background:rgba(122,51,181,.18);border-color:var(--purple)}
.exam-opt .mc-letter{font-family:'Pixelify Sans',monospace;font-size:11px;background:rgba(255,255,255,.1);border-radius:50%;min-width:22px;height:22px;display:flex;align-items:center;justify-content:center}
.vf-btn.sel{background:rgba(122,51,181,.25);border-color:var(--purple);color:var(--text)}
.exam-submit{font-family:'Pixelify Sans',monospace;font-size:16px;background:var(--gold);color:#0F0F1A;border:none;padding:16px 32px;border-radius:var(--r);cursor:pointer;transition:.15s;margin:24px auto 0;display:block}
.exam-submit:hover{filter:brightness(1.1);transform:translateY(-2px)}
.exam-warn{text-align:center;color:var(--pink);font-size:13px;margin-top:12px;min-height:18px}
/* SEQUENCE (order) — armar flujos por click-to-sequence */
.seq-label{font-size:11px;letter-spacing:2px;text-transform:uppercase;color:var(--muted);margin:14px 0 6px;font-family:'Pixelify Sans',monospace}
.seq{display:grid;gap:6px;margin-bottom:8px;min-height:42px}
.seq-item{display:flex;align-items:center;gap:10px;background:rgba(122,51,181,.12);border:1px solid var(--purple);border-radius:10px;padding:9px 12px;font-size:13px;line-height:1.35}
.seq-item span{font-family:'Pixelify Sans',monospace;font-size:12px;color:var(--purple);min-width:18px;flex-shrink:0}
.seq-item.seq-ok{background:rgba(47,181,122,.12);border-color:var(--green)}
.seq-item.seq-ok span{color:var(--green)}
.seq-item.seq-bad{background:rgba(212,60,158,.12);border-color:var(--pink)}
.seq-item.seq-bad span{color:var(--pink)}
.seq-empty{color:var(--muted);font-size:13px;font-style:italic;padding:10px 12px;border:1px dashed var(--border-h);border-radius:10px}
.seq-pool{display:flex;flex-wrap:wrap;gap:8px}
.seq-pool button{font-size:13px;background:var(--panel);border:1px solid var(--border);color:var(--text);padding:9px 14px;border-radius:10px;cursor:pointer;transition:.15s;text-align:left;max-width:100%}
.seq-pool button:hover{background:var(--panel-h);border-color:var(--border-h)}
.seq-reset{font-size:12px;background:none;border:1px solid var(--border);color:var(--muted);padding:6px 14px;border-radius:99px;cursor:pointer;margin-top:4px}
.seq-reset:hover{color:var(--text)}
/* RESULTS */
.res-hero{text-align:center;padding:24px 0 10px}
.res-score{font-family:'Pixelify Sans',monospace;font-size:clamp(48px,14vw,84px);line-height:1;color:var(--gold)}
.res-rank{font-family:'Pixelify Sans',monospace;font-size:22px;margin-top:6px}
.res-sub{color:var(--muted);font-size:13px;margin-top:8px}
.res-item{background:var(--panel);border:1px solid var(--border);border-radius:var(--r);margin-bottom:10px;overflow:hidden}
.res-head{display:flex;align-items:center;gap:10px;padding:14px 18px;cursor:pointer}
.res-head:hover{background:var(--panel-h)}
.res-badge{font-family:'Pixelify Sans',monospace;font-size:12px;padding:2px 9px;border-radius:99px;white-space:nowrap}
.res-badge.ok{background:rgba(47,181,122,.18);color:var(--green)}
.res-badge.half{background:rgba(235,210,60,.18);color:var(--gold)}
.res-badge.no{background:rgba(212,60,158,.18);color:var(--pink)}
.res-qlabel{flex:1;font-size:14px}
.res-pts{font-family:'Pixelify Sans',monospace;font-size:13px;color:var(--muted)}
.res-body{display:none;padding:0 18px 18px;font-size:14px;line-height:1.7}
.res-body.show{display:block}
.res-body .lbl{font-size:10px;letter-spacing:2px;text-transform:uppercase;color:var(--muted);font-family:'Pixelify Sans',monospace;margin:12px 0 4px}
.res-body .ans-correct{color:var(--green)}
.res-body code{font-family:monospace;background:rgba(0,0,0,.3);padding:1px 5px;border-radius:4px;font-size:13px;color:var(--orange)}
.res-body pre{font-family:monospace;font-size:12px;background:rgba(0,0,0,.35);padding:14px;border-radius:10px;overflow-x:auto;line-height:1.7;border-left:3px solid var(--green);margin:8px 0;color:var(--text)}
.res-body .flow{font-family:monospace;font-size:13px;background:rgba(0,0,0,.3);padding:12px 16px;border-radius:10px;line-height:1.9;border-left:3px solid var(--purple);margin-top:6px}
.res-body .your-ans{background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:8px;padding:10px 14px;white-space:pre-wrap;font-size:13px;color:var(--text)}
/* DIAGRAMAS */
.diagrams-cta{display:flex;align-items:center;gap:14px;width:100%;text-align:left;background:var(--panel);border:1px solid var(--border);border-radius:var(--r);padding:16px 18px;margin:18px 0 4px;cursor:pointer;transition:.15s}
.diagrams-cta:hover{background:var(--panel-h);transform:translateY(-2px)}
.diagrams-cta-i{font-size:26px;line-height:1}
.diagrams-cta-t{font-family:'Pixelify Sans',monospace;font-size:15px;color:var(--text);display:block}
.diagrams-cta-s{font-size:12px;color:var(--muted);display:block;margin-top:2px}
/* Solucionario Simulacro 5 */
.sol-item{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:26px 28px;margin-bottom:20px}
.sol-head{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.sol-n{flex:0 0 auto;width:30px;height:30px;display:flex;align-items:center;justify-content:center;font-family:'Pixelify Sans',monospace;font-weight:700;color:#fff;background:var(--purple);border-radius:9px}
.sol-type{font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);border:1px solid var(--border);border-radius:99px;padding:4px 12px}
.sol-consigna{color:var(--text);line-height:1.65}
.sol-consigna>*+*{margin-top:10px}
.sol-consigna ol,.sol-consigna ul{margin:10px 0;padding-left:24px}
.sol-consigna li{margin-bottom:8px;line-height:1.6}
.sol-consigna pre{background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:14px 16px;overflow-x:auto;font-size:12.5px;line-height:1.5;white-space:pre;margin:12px 0}
.sol-consigna code{background:var(--bg);border:1px solid var(--border);border-radius:5px;padding:1px 5px;font-size:12.5px}
.sol-label{margin:22px 0 10px;padding-top:18px;border-top:1px solid var(--border);font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--green);font-weight:700}
.sol-ans{color:var(--text);line-height:1.65;background:rgba(60,180,120,.08);border-left:3px solid var(--green);border-radius:0 10px 10px 0;padding:16px 20px}
.sol-ans>*+*{margin-top:12px}
.sol-ans code{background:var(--bg);border:1px solid var(--border);border-radius:5px;padding:1px 5px;font-size:12.5px}
.sol-ans pre{background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:14px 16px;overflow-x:auto;font-size:12.5px;line-height:1.5;white-space:pre;margin:12px 0 0}
.sol-vf{display:flex;flex-direction:column;gap:10px}
.sol-vf-item{display:flex;gap:12px;align-items:flex-start;background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:14px 16px}
.sol-vf-mark{flex:0 0 auto;width:26px;height:26px;display:flex;align-items:center;justify-content:center;font-weight:700;border-radius:7px;color:#fff}
.sol-vf-mark.v{background:var(--green)}
.sol-vf-mark.f{background:#d9534f}
.sol-vf-body{flex:1 1 auto;min-width:0}
.sol-vf-text{color:var(--text);line-height:1.55}
.sol-vf-exp{margin-top:7px;padding-top:7px;border-top:1px dashed var(--border);font-size:13px;color:var(--muted);line-height:1.55}
/* Diagramas: tabs + chips selector */
.dg-tabs{display:flex;gap:8px;margin:4px 0 14px}
.dg-tab{flex:0 0 auto;font-family:'Pixelify Sans',monospace;font-size:14px;color:var(--muted);background:var(--panel);border:1px solid var(--border);padding:9px 18px;border-radius:99px;cursor:pointer;transition:.15s}
.dg-tab:hover{background:var(--panel-h);color:var(--text)}
.dg-tab.active{background:var(--purple);border-color:var(--purple);color:#fff}
.dg-chips{margin:2px 0 14px}
.dg-nav{display:flex;align-items:center;gap:10px}
.dg-select{flex:1 1 auto;min-width:0;font-family:inherit;font-size:14px;color:var(--text);background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:11px 40px 11px 14px;cursor:pointer;transition:.15s;appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238a8aa0' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.dg-select:hover{background-color:var(--panel-h);border-color:var(--border-h)}
.dg-select:focus{outline:none;border-color:var(--purple)}
.dg-select option{background:var(--panel);color:var(--text)}
.dg-arrow{flex:0 0 auto;width:42px;height:42px;font-size:17px;line-height:1;color:var(--text);background:var(--panel);border:1px solid var(--border);border-radius:12px;cursor:pointer;transition:.15s}
.dg-arrow:hover:not(:disabled){background:var(--panel-h);border-color:var(--purple)}
.dg-arrow:disabled{opacity:.35;cursor:default}
.dg-count{flex:0 0 auto;font-size:13px;color:var(--muted);min-width:40px;text-align:center}
/* Diagramas: toggle Ver/Practicar */
.flow-mode{display:flex;gap:6px;margin:2px 0 14px}
.flow-mode-btn{flex:0 0 auto;font-family:'Pixelify Sans',monospace;font-size:12.5px;color:var(--muted);background:var(--panel);border:1px solid var(--border);padding:7px 14px;border-radius:99px;cursor:pointer;transition:.15s}
.flow-mode-btn:hover{background:var(--panel-h);color:var(--text)}
.flow-mode-btn.active{background:rgba(122,51,181,.22);border-color:var(--purple);color:var(--text)}
.flow-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
/* Razón por paso (por qué va acá) */
.dg-step-why{display:block;font-size:12px;color:var(--muted);line-height:1.5;margin-top:4px;padding-left:2px;border-left:2px solid var(--border-h);padding-left:8px}
.seq-item .dg-step-why{margin-top:6px;border-left-color:rgba(255,255,255,.18)}
.seq-item em{color:var(--pink);font-style:normal;font-weight:600}
/* Diagramas: flujo (pasos numerados) */
.dg-flow{display:grid;gap:6px;margin-top:4px}
.dg-step{display:flex;align-items:flex-start;gap:10px;background:rgba(122,51,181,.1);border:1px solid rgba(122,51,181,.28);border-radius:10px;padding:9px 12px;font-size:13.5px;line-height:1.5;color:var(--text)}
.dg-step-n{flex:0 0 auto;font-family:'Pixelify Sans',monospace;font-size:12px;background:var(--purple);color:#fff;min-width:22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-top:1px}
.dg-why{margin-top:14px;border-left:3px solid var(--purple);background:rgba(122,51,181,.07);border-radius:0 12px 12px 0;padding:12px 16px;font-size:13.5px;line-height:1.7;color:var(--text)}
.dg-why b{display:block;font-family:'Pixelify Sans',monospace;font-size:11px;letter-spacing:1.5px;text-transform:uppercase;color:var(--purple);margin-bottom:5px}
.dg-why p{margin:0}
.diagram-block{background:var(--panel);border:1px solid var(--border);border-radius:var(--r);padding:20px 22px;margin-bottom:18px}
.dg-title{font-family:'Pixelify Sans',monospace;font-size:17px;margin-bottom:4px}
.dg-desc{font-size:13px;color:var(--muted);line-height:1.5;margin-bottom:14px}
.dg-node{margin:5px 0}
.dg-label{background:rgba(255,255,255,.04);border:1px solid var(--border);border-left:3px solid var(--border);border-radius:8px;padding:8px 12px;font-size:13.5px;color:var(--text)}
.dg-label b{font-weight:600}
.dg-note{display:block;font-size:12px;color:var(--muted);margin-top:2px;line-height:1.45}
.dg-children{margin-left:18px;padding-left:14px;border-left:1px dashed var(--border)}
.dg-pair{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;align-items:center;margin:6px 0}
.dg-pair-head{font-family:'Pixelify Sans',monospace;font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}
.dg-pair span{font-size:13px;padding:9px 12px;border-radius:8px}
.dg-pair-head span{padding:2px 4px;background:none}
.dg-pair-a{background:rgba(31,102,242,.1);border:1px solid rgba(31,102,242,.3);color:var(--text)}
.dg-pair-b{background:rgba(47,181,122,.1);border:1px solid rgba(47,181,122,.3);color:var(--text)}
.dg-pair-c{background:rgba(122,51,181,.1);border:1px solid rgba(122,51,181,.3);color:var(--muted);font-size:12.5px}
.dg-foot{font-size:12.5px;color:var(--muted);line-height:1.55;margin-top:14px;padding-top:12px;border-top:1px solid var(--border)}
.dg-foot b{color:var(--text)}
/* MODAL DE CONFIRMACIÓN */
.modal-overlay{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;padding:20px;background:rgba(8,8,16,.72);backdrop-filter:blur(6px)}
.modal-overlay.open{display:flex;animation:fade .2s ease}
.modal-box{width:100%;max-width:400px;background:linear-gradient(180deg,var(--bg2),var(--bg));border:1px solid var(--border-h);border-radius:var(--r);box-shadow:var(--shadow);padding:26px 24px;animation:modalPop .22s ease}
@keyframes modalPop{from{opacity:0;transform:translateY(10px) scale(.97)}to{opacity:1;transform:none}}
.modal-title{font-family:'Pixelify Sans',monospace;font-size:20px;line-height:1.2;color:var(--text);margin-bottom:8px}
.modal-msg{font-size:14px;line-height:1.6;color:var(--muted);margin-bottom:22px}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap}
.modal-btn{font-family:'Pixelify Sans',monospace;font-size:14px;padding:10px 22px;border-radius:99px;cursor:pointer;border:1px solid var(--border);transition:.15s}
.modal-btn.cancel{background:var(--panel);color:var(--text)}
.modal-btn.cancel:hover{background:var(--panel-h);border-color:var(--border-h)}
.modal-btn.confirm{background:var(--purple);color:#fff;border-color:var(--purple)}
.modal-btn.confirm:hover{filter:brightness(1.12);transform:translateY(-1px)}
.modal-btn.confirm.danger{background:var(--pink);border-color:var(--pink)}
@media(max-width:420px){.modal-actions{flex-direction:column-reverse}.modal-btn{width:100%}}
/* RESPONSIVE */
@media(max-width:600px){.stats-bar{grid-template-columns:repeat(2,1fr)}.zones-grid,.sim-grid{grid-template-columns:1fr}.hud-stat:nth-child(n+4){display:none}.dg-pair{grid-template-columns:1fr;gap:4px;border:1px solid var(--border);border-radius:8px;padding:8px;margin:8px 0}.dg-pair span{padding:6px 8px}.dg-pair-head{display:none}}
/* Escalado en monitores grandes (2K/27"): zoom reflowea y re-rasteriza → texto nítido,
   sin scroll horizontal. No-op por debajo de 1600px (mobile/laptop/1080p quedan igual). */
@media(min-width:1600px){html{zoom:1.12}}
@media(min-width:2000px){html{zoom:1.24}}
@media(min-width:2560px){html{zoom:1.36}}