/* Reveloper Cursos — sistema de diseño "Aurora" */
:root{
  --font:'Figtree',system-ui,sans-serif; --display:'Outfit','Figtree',sans-serif; --mono:'JetBrains Mono',ui-monospace,monospace;
  --brand1:#7c5cff; --brand2:#22d3ee; --ok:#34d399; --warn:#fbbf24; --bad:#fb7185;
  --r:18px; --r-sm:12px; --ease:cubic-bezier(.2,.8,.2,1);
}
[data-theme="dark"]{
  --bg:#0a0e1a; --bg2:#0f1424; --surface:rgba(255,255,255,.045); --surface2:rgba(255,255,255,.075); --line:rgba(255,255,255,.10);
  --text:#e9edf9; --muted:#97a1bf; --card-shadow:0 20px 50px -24px rgba(0,0,0,.7); --code:#0b1226; --orb-op:.55;
}
[data-theme="light"]{
  --bg:#f4f5fb; --bg2:#ffffff; --surface:#ffffff; --surface2:#eef0fa; --line:rgba(16,22,48,.11);
  --text:#12172b; --muted:#5a6384; --card-shadow:0 18px 40px -26px rgba(40,50,110,.35); --code:#161c36; --orb-op:.35;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.65;min-height:100vh;display:flex;flex-direction:column;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
h1,h2,h3,h4{font-family:var(--display);line-height:1.12;letter-spacing:-.02em}
.wrap{width:min(1120px,100% - 40px);margin-inline:auto}
.muted{color:var(--muted)}
main{flex:1}

/* fondo aurora */
.bg-orbs{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.bg-orbs i{position:absolute;border-radius:50%;filter:blur(90px);opacity:var(--orb-op)}
.bg-orbs i:nth-child(1){width:520px;height:520px;background:#7c5cff;top:-160px;left:-120px}
.bg-orbs i:nth-child(2){width:460px;height:460px;background:#22d3ee;top:30%;right:-160px;opacity:calc(var(--orb-op)*.7)}
.bg-orbs i:nth-child(3){width:420px;height:420px;background:#fb7185;bottom:-180px;left:30%;opacity:calc(var(--orb-op)*.45)}

/* navegación */
.topnav{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px clamp(16px,4vw,36px);backdrop-filter:blur(16px) saturate(1.3);background:color-mix(in srgb,var(--bg) 72%,transparent);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--display);font-weight:600;font-size:1.08rem}
.brand-mark{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:#fff;font-weight:800;background:linear-gradient(135deg,var(--brand1),var(--brand2));box-shadow:0 6px 18px -6px var(--brand1)}
.brand b{background:linear-gradient(90deg,var(--brand1),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-right{display:flex;align-items:center;gap:8px}
.icon-btn{width:38px;height:38px;border-radius:11px;border:1px solid var(--line);background:var(--surface);color:var(--text);display:grid;place-items:center;cursor:pointer;transition:.2s var(--ease)}
.icon-btn:hover{background:var(--surface2);transform:translateY(-1px)}
.icon-btn svg{width:18px;height:18px}
[data-theme="dark"] .i-sun{display:block}[data-theme="dark"] .i-moon{display:none}
[data-theme="light"] .i-sun{display:none}[data-theme="light"] .i-moon{display:block}
.usermenu{position:relative}
.usermenu summary{list-style:none;display:flex;align-items:center;gap:8px;padding:4px 12px 4px 4px;border:1px solid var(--line);border-radius:99px;background:var(--surface);cursor:pointer}
.usermenu summary::-webkit-details-marker{display:none}
.avatar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-size:.78rem;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--brand1),var(--brand2))}
.uname{font-size:.9rem;font-weight:600}
.menu-pop{position:absolute;right:0;top:calc(100% + 8px);min-width:230px;padding:8px;border-radius:14px;background:var(--bg2);border:1px solid var(--line);box-shadow:var(--card-shadow);display:flex;flex-direction:column;gap:2px}
.menu-who{padding:8px 10px 10px;border-bottom:1px solid var(--line);margin-bottom:4px;display:flex;flex-direction:column}
.menu-who small{color:var(--muted);word-break:break-all}
.menu-pop a,.menu-pop button{all:unset;box-sizing:border-box;width:100%;padding:9px 10px;border-radius:9px;cursor:pointer;font-size:.92rem}
.menu-pop a:hover,.menu-pop button:hover{background:var(--surface2)}

/* botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:12px;border:1px solid transparent;font:600 .95rem var(--font);text-decoration:none;cursor:pointer;transition:.22s var(--ease);white-space:nowrap}
.btn-primary{color:#fff;background:linear-gradient(135deg,var(--brand1),#5b8cff 60%,var(--brand2));box-shadow:0 10px 26px -10px var(--brand1)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px -10px var(--brand1)}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--text)}
.btn-ghost:hover{background:var(--surface2);transform:translateY(-1px)}
.btn-lg{padding:14px 26px;font-size:1.02rem;border-radius:14px}
.btn-sm{padding:8px 14px;font-size:.88rem;border-radius:10px}
.btn-block{width:100%}
.btn[aria-disabled="true"],.btn:disabled{opacity:.5;pointer-events:none}

/* hero */
.hero{padding:clamp(48px,9vw,110px) 0 clamp(36px,6vw,70px)}
.eyebrow{display:inline-block;padding:6px 14px;border-radius:99px;border:1px solid var(--line);background:var(--surface);font-size:.8rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:22px}
.hero h1{font-size:clamp(2.3rem,6.4vw,4.4rem);font-weight:800;max-width:15ch}
.grad{background:linear-gradient(90deg,var(--brand1),var(--brand2) 70%,#a3e635);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{max-width:60ch;margin-top:20px;font-size:clamp(1.02rem,2vw,1.2rem);color:var(--muted)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;margin:10px 0 26px}
.section-head h2{font-size:clamp(1.5rem,3.4vw,2.1rem)}

/* tarjetas de catálogo */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:22px;margin-bottom:70px}
.course-card{--ac:#7c5cff;position:relative;display:flex;flex-direction:column;padding:22px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);box-shadow:var(--card-shadow);overflow:hidden;transition:.3s var(--ease)}
.course-card::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:linear-gradient(90deg,var(--ac),transparent)}
.course-card:hover{transform:translateY(-6px);border-color:color-mix(in srgb,var(--ac) 55%,var(--line))}
.cc-top{display:flex;gap:8px;flex-wrap:wrap}
.chip{font-size:.74rem;font-weight:700;letter-spacing:.04em;padding:4px 10px;border-radius:99px;background:var(--surface2);border:1px solid var(--line);color:var(--muted)}
.chip-new{color:var(--ok);border-color:color-mix(in srgb,var(--ok) 40%,transparent)}
.chip-soon{color:var(--warn)}
.cc-art{position:relative;height:96px;margin:16px 0 12px;border-radius:14px;background:radial-gradient(120% 140% at 0% 0%,color-mix(in srgb,var(--ac) 38%,transparent),transparent 62%),var(--surface2);overflow:hidden}
.cc-art i{position:absolute;border-radius:50%;border:2px solid color-mix(in srgb,var(--ac) 60%,transparent)}
.cc-art i:nth-child(1){width:90px;height:90px;right:18px;top:-24px}
.cc-art i:nth-child(2){width:54px;height:54px;right:92px;bottom:-14px;background:color-mix(in srgb,var(--ac) 28%,transparent)}
.cc-art i:nth-child(3){width:20px;height:20px;right:62px;top:20px;background:var(--ac);border:0}
.course-card h3{font-size:1.35rem;margin-bottom:8px}
.course-card p{color:var(--muted);font-size:.96rem;flex:1}
.cc-meta{list-style:none;display:flex;flex-wrap:wrap;gap:6px 14px;margin:16px 0;font-size:.84rem;color:var(--muted)}
.cc-meta li::before{content:"●";color:var(--ac);font-size:.55rem;margin-right:7px;vertical-align:middle}
.cc-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:14px;border-top:1px solid var(--line)}
.course-card.is-soon{opacity:.75}
.course-card.is-placeholder{align-items:center;justify-content:center;text-align:center;border-style:dashed;background:transparent;box-shadow:none;min-height:300px}
.course-card.is-placeholder:hover{transform:none}
.ph-plus{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;font-size:1.8rem;border:2px dashed var(--line);color:var(--muted);margin-bottom:14px}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-bottom:80px}
.step{padding:22px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line)}
.step b{display:grid;place-items:center;width:36px;height:36px;border-radius:11px;color:#fff;background:linear-gradient(135deg,var(--brand1),var(--brand2));margin-bottom:12px;font-family:var(--display)}
.step p{color:var(--muted);font-size:.95rem}

/* autenticación */
.auth-wrap{display:grid;place-items:center;padding:clamp(28px,6vw,70px) 18px}
.auth-card{width:min(440px,100%);padding:clamp(24px,5vw,38px);border-radius:22px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--card-shadow);backdrop-filter:blur(10px)}
.auth-card h1{font-size:1.9rem;margin-bottom:6px}
.form{display:flex;flex-direction:column;gap:14px;margin-top:20px}
.form label{display:flex;flex-direction:column;gap:6px;font-size:.88rem;font-weight:600}
.form small{font-weight:400;color:var(--muted)}
input[type=text],input[type=email],input[type=password],textarea{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:var(--bg2);color:var(--text);font:500 1rem var(--font);transition:.2s;outline:none}
input:focus,textarea:focus{border-color:var(--brand1);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand1) 22%,transparent)}
.alert{padding:12px 14px;border-radius:12px;font-size:.92rem;margin-top:16px}
.alert-err{background:color-mix(in srgb,var(--bad) 14%,transparent);border:1px solid color-mix(in srgb,var(--bad) 45%,transparent)}
.alert-ok{background:color-mix(in srgb,var(--ok) 14%,transparent);border:1px solid color-mix(in srgb,var(--ok) 45%,transparent)}
.or{display:flex;align-items:center;gap:12px;margin:20px 0 0;color:var(--muted);font-size:.82rem}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}
.g-wrap{display:flex;justify-content:center;margin-top:20px}
.auth-alt{text-align:center;margin-top:20px;color:var(--muted);font-size:.93rem}
.auth-alt a{color:var(--brand2);font-weight:600}

/* ===== programa / home ===== */
.prog-hero{padding:clamp(40px,7vw,86px) 0 30px}
.prog-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:34px;align-items:center}
.prog-hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;max-width:16ch}
.stat-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.stat{padding:8px 14px;border-radius:12px;background:var(--surface);border:1px solid var(--line);font-size:.88rem}
.stat b{font-family:var(--display);font-size:1.05rem;margin-right:4px}
.me-card{padding:24px;border-radius:22px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--card-shadow);text-align:center}
.ring{--p:0;--ac:#7c5cff;width:132px;height:132px;border-radius:50%;margin:0 auto 14px;display:grid;place-items:center;background:conic-gradient(var(--ac) calc(var(--p)*1%),var(--surface2) 0)}
.ring span{width:104px;height:104px;border-radius:50%;background:var(--bg2);display:grid;place-items:center;font:700 1.7rem var(--display)}
.ring.sm{width:56px;height:56px}.ring.sm span{width:44px;height:44px;font-size:.85rem}
.me-card h3{font-size:1.1rem;margin-bottom:4px}
.me-card p{color:var(--muted);font-size:.9rem;margin-bottom:16px}
.outcomes{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;margin:10px 0 56px}
.outcome{padding:18px;border-radius:var(--r-sm);background:var(--surface);border:1px solid var(--line);font-size:.94rem}
.outcome b{display:block;font-family:var(--display);margin-bottom:4px;font-size:1.02rem}
.course-panel{--ac:#7c5cff;margin-bottom:22px;border-radius:22px;background:var(--surface);border:1px solid var(--line);overflow:hidden;box-shadow:var(--card-shadow)}
.cp-head{display:flex;gap:18px;align-items:center;padding:22px 24px;border-bottom:1px solid var(--line);background:linear-gradient(90deg,color-mix(in srgb,var(--ac) 16%,transparent),transparent 60%)}
.cp-num{font:800 2.2rem var(--display);color:var(--ac);min-width:54px}
.cp-head h3{font-size:1.28rem}
.cp-head p{color:var(--muted);font-size:.93rem;margin-top:4px}
.cp-head .grow{flex:1}
.unit-list{list-style:none}
.unit-row a{display:grid;grid-template-columns:34px 1fr auto;gap:14px;align-items:center;padding:14px 24px;text-decoration:none;border-top:1px solid var(--line);transition:.18s}
.unit-row:first-child a{border-top:0}
.unit-row a:hover{background:var(--surface2)}
.u-dot{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-size:.8rem;font-weight:700;border:2px solid var(--line);color:var(--muted)}
.is-done .u-dot{background:var(--ok);border-color:var(--ok);color:#06231a}
.is-next .u-dot{border-color:var(--ac);color:var(--ac);box-shadow:0 0 0 5px color-mix(in srgb,var(--ac) 20%,transparent)}
.u-title{font-weight:600}
.u-sum{display:block;color:var(--muted);font-size:.87rem;font-weight:400}
.u-meta{font-size:.8rem;color:var(--muted);white-space:nowrap}

/* ===== lección ===== */
.lesson-grid{display:grid;grid-template-columns:300px minmax(0,1fr);gap:34px;padding:30px 0 70px;align-items:start}
.outline{position:sticky;top:80px;max-height:calc(100vh - 100px);overflow:auto;padding:16px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line)}
.outline h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:6px 8px 8px}
.outline details{margin-bottom:6px}
.outline summary{list-style:none;cursor:pointer;padding:8px 8px;border-radius:10px;font-weight:600;font-size:.9rem;display:flex;justify-content:space-between;gap:8px}
.outline summary::-webkit-details-marker{display:none}
.outline summary:hover{background:var(--surface2)}
.outline summary small{color:var(--muted);font-weight:500}
.outline a{display:flex;gap:9px;align-items:flex-start;padding:7px 8px 7px 14px;border-radius:9px;text-decoration:none;font-size:.86rem;color:var(--muted)}
.outline a:hover{background:var(--surface2);color:var(--text)}
.outline a.cur{background:color-mix(in srgb,var(--ac,#7c5cff) 18%,transparent);color:var(--text);font-weight:600}
.outline a i{font-style:normal;width:16px;flex:none;text-align:center;color:var(--muted)}
.outline a.done i{color:var(--ok)}
.crumb{font-size:.86rem;color:var(--muted);margin-bottom:10px}
.crumb a{text-decoration:none}.crumb a:hover{color:var(--text)}
.lesson h1{font-size:clamp(1.8rem,4vw,2.7rem);font-weight:800;margin-bottom:12px}
.lesson-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.progressbar{height:6px;border-radius:99px;background:var(--surface2);overflow:hidden;margin:6px 0 26px}
.progressbar i{display:block;height:100%;background:linear-gradient(90deg,var(--ac,#7c5cff),var(--brand2));border-radius:99px;transition:width .6s var(--ease)}
.prose{font-size:1.04rem}
.prose h3{font-size:1.35rem;margin:30px 0 10px}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 16px 22px}.prose li{margin-bottom:6px}
.prose strong{color:var(--text)}
.prose code{font-family:var(--mono);font-size:.88em;background:var(--surface2);border:1px solid var(--line);padding:2px 6px;border-radius:6px}
.prose table{width:100%;border-collapse:collapse;margin:0 0 18px;font-size:.93rem;display:block;overflow-x:auto}
.prose th,.prose td{padding:9px 12px;border:1px solid var(--line);text-align:left;vertical-align:top}
.prose th{background:var(--surface2);font-family:var(--display)}
pre.prompt{position:relative;margin:0 0 18px;padding:16px 18px;border-radius:14px;background:var(--code);color:#e8ecff;font:400 .88rem/1.6 var(--mono);white-space:pre-wrap;border:1px solid var(--line)}
pre.prompt::before{content:"PROMPT";position:absolute;top:-10px;left:14px;font:700 .65rem var(--font);letter-spacing:.1em;padding:2px 8px;border-radius:6px;background:linear-gradient(135deg,var(--brand1),var(--brand2));color:#fff}
.callout{margin:0 0 18px;padding:14px 16px;border-radius:14px;border:1px solid var(--line);border-left:4px solid var(--brand2);background:var(--surface)}
.callout.warn{border-left-color:var(--warn)}.callout.new{border-left-color:var(--ok)}
.callout b.t{display:block;font-family:var(--display);margin-bottom:3px}
.card-block{margin-top:34px;padding:22px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line)}
.card-block>h3{font-size:1.2rem;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.card-block .tag{font:700 .68rem var(--font);letter-spacing:.1em;text-transform:uppercase;padding:3px 9px;border-radius:7px;background:color-mix(in srgb,var(--ac,#7c5cff) 24%,transparent);color:var(--text)}
.notes textarea{min-height:130px;resize:vertical;font-family:var(--font);line-height:1.55}
.save-state{font-size:.8rem;color:var(--muted);margin-top:6px;min-height:1.2em}
.quiz .q{margin:20px 0;padding-bottom:18px;border-bottom:1px dashed var(--line)}
.quiz .q:last-of-type{border-bottom:0}
.quiz .q p{font-weight:600;margin-bottom:10px}
.opts{display:flex;flex-direction:column;gap:8px}
.opt{display:flex;gap:11px;align-items:flex-start;padding:11px 14px;border-radius:12px;border:1px solid var(--line);background:var(--bg2);cursor:pointer;transition:.18s;font-size:.97rem}
.opt:hover{border-color:var(--brand1)}
.opt input{margin-top:4px;accent-color:var(--brand1)}
.opt.sel{border-color:var(--brand1);background:color-mix(in srgb,var(--brand1) 14%,transparent)}
.opt.right{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 15%,transparent)}
.opt.wrong{border-color:var(--bad);background:color-mix(in srgb,var(--bad) 13%,transparent)}
.why{margin-top:10px;font-size:.9rem;color:var(--muted);padding:10px 12px;border-radius:10px;background:var(--surface2)}
.result{margin-top:16px;padding:16px 18px;border-radius:14px;font-weight:600}
.result.pass{background:color-mix(in srgb,var(--ok) 16%,transparent);border:1px solid var(--ok)}
.result.fail{background:color-mix(in srgb,var(--warn) 14%,transparent);border:1px solid var(--warn)}
.status-pill{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:99px;font-size:.8rem;font-weight:700}
.status-pill.done{background:color-mix(in srgb,var(--ok) 18%,transparent);color:var(--ok)}
.status-pill.todo{background:var(--surface2);color:var(--muted)}
.pager{display:flex;justify-content:space-between;gap:12px;margin-top:40px;flex-wrap:wrap}
.lock-note{margin-top:24px;padding:22px;border-radius:var(--r);border:1px dashed var(--line);text-align:center}
.outline-toggle{display:none}

/* certificado */
.cert-wrap{padding:30px 0 70px}
.cert{position:relative;max-width:900px;margin:0 auto;padding:clamp(28px,6vw,64px);border-radius:24px;background:#fffdf7;color:#1a1f36;text-align:center;border:10px double #cbb676;box-shadow:var(--card-shadow)}
.cert h1{font-size:clamp(1.8rem,5vw,3rem);color:#1a1f36}
.cert .who{font:700 clamp(1.6rem,4.5vw,2.6rem) var(--display);margin:16px 0;color:#5b3fd0}
.cert .code{font:500 .8rem var(--mono);color:#6a7090;margin-top:26px}
.cert small{color:#5b6280}
.print-bar{display:flex;gap:10px;justify-content:center;margin-bottom:20px}

/* admin */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
table.tbl{width:100%;border-collapse:collapse;font-size:.92rem}
.tbl th,.tbl td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl th{font-family:var(--display);background:var(--surface2);position:sticky;top:0}
.minibar{display:inline-block;width:90px;height:7px;border-radius:99px;background:var(--surface2);vertical-align:middle;overflow:hidden;margin-right:8px}
.minibar i{display:block;height:100%;background:linear-gradient(90deg,var(--brand1),var(--brand2))}

.foot{margin-top:auto;padding:30px clamp(16px,4vw,36px);border-top:1px solid var(--line);color:var(--muted);font-size:.9rem;display:flex;flex-direction:column;gap:6px}
.foot a{color:var(--text)}
.foot small{max-width:90ch;font-size:.78rem;opacity:.8}

/* confeti */
.confetti{position:fixed;inset:0;pointer-events:none;z-index:99;overflow:hidden}
.confetti i{position:absolute;top:-12px;width:9px;height:14px;border-radius:2px;animation:fall 1.9s var(--ease) forwards}
@keyframes fall{to{transform:translateY(105vh) rotate(720deg);opacity:.2}}
.reveal{animation:rise .7s var(--ease) both}
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

@media (max-width:900px){
  .prog-grid{grid-template-columns:1fr}
  .lesson-grid{grid-template-columns:1fr}
  .outline{position:static;max-height:none;display:none}
  .outline.open{display:block}
  .outline-toggle{display:inline-flex;margin-bottom:14px}
  .uname{display:none}
}
@media (max-width:560px){
  .brand-text{display:none}
  .cp-head{flex-wrap:wrap}.unit-row a{padding:12px 16px;grid-template-columns:30px 1fr}.u-meta{display:none}
}
@media print{
  body *{visibility:hidden}.cert,.cert *{visibility:visible}.cert{position:absolute;left:0;top:0;width:100%;box-shadow:none}
  .bg-orbs,.topnav,.foot,.print-bar{display:none!important}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}

/* ---------- Lector de voz (escuchar la unidad) ---------- */
.tts{position:sticky;top:76px;z-index:20;display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:0 0 22px;padding:10px 12px;border-radius:16px;background:color-mix(in srgb,var(--surface) 88%,transparent);border:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 10px 30px -18px rgba(0,0,0,.5)}
.tts[hidden]{display:none}
.tts-btn{width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:var(--surface2);color:var(--text);display:grid;place-items:center;cursor:pointer;transition:.2s var(--ease);flex:none}
.tts-btn:hover{transform:translateY(-1px);border-color:var(--ac,var(--brand1))}
.tts-btn svg{width:18px;height:18px}
.tts-main{width:46px;height:46px;border-radius:14px;border:0;color:#fff;background:linear-gradient(135deg,var(--brand1),var(--brand2));box-shadow:0 8px 20px -8px var(--brand1)}
.tts-main svg{width:22px;height:22px}
.tts-main .i-pause,.tts.playing .tts-main .i-play{display:none}
.tts.playing .tts-main .i-pause{display:block}
.tts-info{flex:1 1 150px;min-width:130px;display:flex;flex-direction:column;gap:2px}
.tts-info b{font-size:.92rem;line-height:1.2}
.tts-info small{color:var(--muted);font-size:.78rem;line-height:1.25}
.tts-bar{display:block;height:4px;border-radius:99px;background:var(--line);overflow:hidden;margin-top:4px}
.tts-bar u{display:block;height:100%;width:0;text-decoration:none;background:linear-gradient(90deg,var(--brand1),var(--brand2));transition:width .3s}
.tts select{max-width:150px;padding:8px 10px;border-radius:10px;border:1px solid var(--line);background:var(--surface2);color:var(--text);font:600 .82rem var(--font)}
.tts-now{background:color-mix(in srgb,var(--brand1) 16%,transparent);box-shadow:-10px 0 0 color-mix(in srgb,var(--brand1) 16%,transparent),10px 0 0 color-mix(in srgb,var(--brand1) 16%,transparent);border-radius:6px;transition:background .25s}
@media (max-width:640px){.tts{top:68px}.tts select{flex:1 1 40%;max-width:none}}
@media print{.tts{display:none}}