/* =====================================================================
   Línea del tiempo · Origen, desarrollo y crisis de la Psicología social
   Reto 1 · UVEG · Diseño para estudiantes (claro, cálido, tipografía grande)
   ===================================================================== */
:root{
  --bg:#FFF7EC; --bg2:#FFEFD9; --paper:#FFFFFF; --ink:#1E1B3A; --muted:#5E5A7C; --soft:#9A96B8;
  --line:#EADFCE; --origen:#F26B4C; --desarrollo:#0FA3B1; --crisis:#C63BB0; --sun:#FFD166; --lav:#E9E4FF;
  --origen-soft:#FFE3DB; --desarrollo-soft:#DDF5F7; --crisis-soft:#F8DFF3;
  --r:28px; --shadow:0 18px 50px rgba(30,27,58,.12);
  --font:"Nunito","Segoe UI",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);font-family:var(--font);overflow:hidden}
body.idle{cursor:none}
button{font-family:inherit}

/* fondo animado */
.bg{position:fixed;inset:0;overflow:hidden;z-index:0;background:linear-gradient(160deg,var(--bg) 0%,var(--bg2) 100%)}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.55;animation:float 18s ease-in-out infinite}
.blob.b1{width:640px;height:640px;left:-180px;top:-200px;background:#FFD9CE}
.blob.b2{width:560px;height:560px;right:-160px;top:10%;background:#CDEFF2;animation-delay:-6s}
.blob.b3{width:520px;height:520px;left:35%;bottom:-260px;background:#F3D9F0;animation-delay:-12s}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(40px,-30px) scale(1.06)}}
.grid{position:absolute;inset:0;background-image:radial-gradient(rgba(30,27,58,.07) 1.4px,transparent 1.4px);background-size:34px 34px;mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 85%)}

/* escenario 16:9 escalado */
#stage{position:absolute;left:50%;top:50%;width:1920px;height:1080px;transform-origin:center;transform:translate(-50%,-50%) scale(1);z-index:1}
.slide{position:absolute;inset:0;padding:90px 120px;opacity:0;visibility:hidden;transition:opacity .5s ease,visibility .5s,transform .5s ease;transform:translateX(40px)}
.slide.active{opacity:1;visibility:visible;transform:none}
.slide.leaving{transform:translateX(-40px)}
.rise{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.8,.2,1)}
.active .rise{opacity:1;transform:none}
.active .rise:nth-child(1){transition-delay:.05s}.active .rise:nth-child(2){transition-delay:.17s}.active .rise:nth-child(3){transition-delay:.29s}.active .rise:nth-child(4){transition-delay:.41s}.active .rise:nth-child(5){transition-delay:.53s}.active .rise:nth-child(6){transition-delay:.65s}.active .rise:nth-child(7){transition-delay:.77s}
.ico{width:1em;height:1em;display:inline-block;vertical-align:-.15em;flex:none}
h1,h2,h3{margin:0;font-weight:900;letter-spacing:-.015em;line-height:1.05}
.c-origen{color:var(--origen);--c:var(--origen);--cs:var(--origen-soft)}.c-desarrollo{color:var(--desarrollo);--c:var(--desarrollo);--cs:var(--desarrollo-soft)}.c-crisis{color:var(--crisis);--c:var(--crisis);--cs:var(--crisis-soft)}
.bg-origen{background:var(--origen)}.bg-desarrollo{background:var(--desarrollo)}.bg-crisis{background:var(--crisis)}
.soft-origen{background:var(--origen-soft)}.soft-desarrollo{background:var(--desarrollo-soft)}.soft-crisis{background:var(--crisis-soft)}
.tag{display:inline-flex;align-items:center;gap:10px;padding:10px 22px;border-radius:999px;font-size:24px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#fff}
.tag .ico{font-size:26px}
.overline{font-size:24px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.card{background:var(--paper);border:2px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.btn{display:inline-flex;align-items:center;gap:12px;padding:14px 26px;border-radius:999px;border:2px solid var(--ink);background:var(--ink);color:#fff;font-size:22px;font-weight:800;cursor:pointer;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(30,27,58,.25)}
.btn:active{transform:translateY(1px)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn .ico{font-size:24px}

/* ---------------- 1 · Portada ---------------- */
.cover{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center}
.cover .left{display:flex;flex-direction:column;gap:30px}
.cover .uni{display:flex;align-items:center;gap:16px;font-size:26px;font-weight:800;color:var(--muted)}
.cover .uni .ico{font-size:40px;color:var(--origen)}
.cover .kicker{display:inline-flex;align-items:center;gap:12px;padding:10px 22px;border-radius:999px;background:var(--ink);color:#fff;font-size:24px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;align-self:flex-start}
.cover h1{font-size:98px;line-height:.98}
.cover h1 .hl{position:relative;display:inline-block;z-index:0}
.cover h1 .hl::after{content:"";position:absolute;left:-6px;right:-6px;bottom:8px;height:34%;background:var(--sun);z-index:-1;border-radius:8px;transform:scaleX(0);transform-origin:left;animation:hl .7s .9s cubic-bezier(.2,.8,.2,1) forwards}
@keyframes hl{to{transform:scaleX(1)}}
.cover .sub{font-size:34px;line-height:1.35;color:var(--muted);max-width:900px}
.cover .stages{display:flex;gap:16px}
.idcard{padding:46px 52px;display:grid;grid-template-columns:auto 1fr;gap:20px 26px;align-items:center;font-size:29px;position:relative;transform:rotate(1.2deg)}
.idcard::before{content:"";position:absolute;left:50%;top:-16px;width:150px;height:34px;transform:translateX(-50%) rotate(-2deg);background:rgba(255,209,102,.85);border-radius:6px}
.idcard .k{display:flex;align-items:center;gap:12px;color:var(--muted);font-weight:800;font-size:22px;letter-spacing:.06em;text-transform:uppercase}
.idcard .k .ico{font-size:30px;color:var(--desarrollo)}
.idcard .v{font-weight:800}
.idcard .v.big{font-size:34px}
.idcard .sep{grid-column:1/-1;height:2px;background:var(--line);margin:4px 0}

/* ---------------- 2 · Línea del tiempo ---------------- */
.tl-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:44px}
.tl-head h2{font-size:62px}
.tl-head .legend{display:flex;gap:18px}
.legend .tag{font-size:20px;padding:8px 18px}
.timeline{position:relative;height:760px}
.track{position:absolute;left:0;right:0;top:292px;height:16px;border-radius:99px;background:linear-gradient(90deg,var(--origen) 0 34%,var(--desarrollo) 42% 74%,var(--crisis) 84% 100%);box-shadow:0 8px 24px rgba(30,27,58,.15)}
.track::after{content:"";position:absolute;right:-30px;top:-12px;border:20px solid transparent;border-left:32px solid var(--crisis);border-right:0}
.track .fill{position:absolute;left:0;top:0;bottom:0;border-radius:99px;background:rgba(255,255,255,.55);width:100%;transform-origin:right;transform:scaleX(1);transition:transform .7s cubic-bezier(.2,.8,.2,1)}
.node{position:absolute;top:0;width:19%;transform:translate(-50%,18px);text-align:center;opacity:0;transition:opacity .55s ease,transform .55s cubic-bezier(.2,.8,.2,1);cursor:pointer}
.node.shown{opacity:1;transform:translateX(-50%)}
.node.n1{left:10%}.node.n2{left:30%}.node.n3{left:50%}.node.n4{left:70%}.node.n5{left:90%}
.node .year{font-size:68px;font-weight:900;line-height:1;margin-bottom:8px}
.node .tag{font-size:19px;padding:6px 16px;margin-bottom:26px}
.node .dot{width:42px;height:42px;border-radius:50%;margin:0 auto;background:#fff;border:9px solid currentColor;box-shadow:0 0 0 6px #fff,0 8px 20px rgba(30,27,58,.2);position:relative;z-index:2;transition:transform .2s}
.node:hover .dot{transform:scale(1.15)}
.node .ncard{margin-top:34px;padding:26px 24px 22px;text-align:left;min-height:270px;position:relative;transition:transform .2s,border-color .2s}
.node:hover .ncard{transform:translateY(-6px);border-color:currentColor}
.node .ncard .who{display:flex;align-items:center;gap:12px;font-size:30px;font-weight:900;line-height:1.1;margin-bottom:12px;color:var(--ink)}
.node .ncard .who .ico{font-size:34px}
.node .ncard p{margin:0;font-size:22px;line-height:1.38;color:var(--muted);font-weight:600}
.node .ncard .more{position:absolute;right:18px;bottom:14px;font-size:18px;font-weight:800;color:currentColor;opacity:0;transition:opacity .2s}
.node:hover .ncard .more{opacity:1}
.tl-hint{position:absolute;left:0;right:0;bottom:-6px;text-align:center;font-size:22px;color:var(--soft);font-weight:700}

/* ---------------- 3-7 · Autor ---------------- */
.author{padding-top:150px;display:grid;grid-template-columns:440px 1fr;grid-template-rows:auto auto;gap:26px 60px;align-items:start}
.mini{position:absolute;left:120px;right:120px;top:64px;display:flex;align-items:center}
.mini .seg{flex:1;height:5px;background:var(--line);border-radius:4px}
.mini .seg.done{background:var(--ink)}
.mini .pt{width:24px;height:24px;border-radius:50%;background:var(--line);border:4px solid var(--bg);box-shadow:0 0 0 2px var(--line);position:relative;flex:none;cursor:pointer;transition:transform .2s}
.mini .pt:hover{transform:scale(1.2)}
.mini .pt span{position:absolute;top:30px;left:50%;transform:translateX(-50%);font-size:19px;font-weight:800;color:var(--soft);white-space:nowrap}
.mini .pt.done{background:var(--ink);box-shadow:0 0 0 2px var(--ink)}
.mini .pt.done span{color:var(--muted)}
.mini .pt.cur{background:currentColor;box-shadow:0 0 0 3px currentColor,0 0 0 8px #fff;transform:scale(1.3)}
.mini .pt.cur span{color:currentColor;transform:translateX(-50%) scale(.78)}
.portrait{width:440px;height:520px;border-radius:32px;overflow:hidden;border:8px solid currentColor;box-shadow:var(--shadow);position:relative;background:#eee;transform:rotate(-2deg);transition:transform .3s}
.portrait:hover{transform:rotate(0) scale(1.02)}
.portrait img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.05);display:block}
.portrait .num{position:absolute;left:0;bottom:0;padding:10px 26px;font-size:34px;font-weight:900;color:#fff;background:var(--c);border-top-right-radius:22px}
.portrait .num b{color:#fff}
.author .txt{display:flex;flex-direction:column;gap:16px;min-width:0}
.author .top{display:flex;align-items:center;gap:18px}
.author .top .overline{color:var(--muted)}
.author h1{font-size:72px}
.author .year{font-size:40px;font-weight:800;color:var(--muted);display:flex;align-items:center;gap:14px}
.author .year b{font-size:52px;color:var(--ink)}
.author .year .ico{font-size:40px;color:currentColor}
.author .obra{display:flex;align-items:center;gap:12px;font-size:25px;color:var(--muted);font-weight:700}
.author .obra .ico{font-size:28px;color:currentColor}
.author .obra i{color:var(--ink)}
.author ul{margin:6px 0 0;padding:0;list-style:none;display:grid;gap:12px}
.author li{font-size:26px;line-height:1.3;padding-left:40px;position:relative;font-weight:600;color:var(--ink)}
.author li::before{content:"";position:absolute;left:0;top:11px;width:18px;height:18px;border-radius:50%;background:currentColor}
.author .cite{display:inline-flex;align-items:center;gap:12px;padding:12px 22px;border-radius:16px;background:var(--lav);font-size:22px;color:var(--muted);font-weight:700;align-self:flex-start}
.author .cite .ico{font-size:24px;color:var(--ink)}
.author .cite b{color:var(--ink)}
.widget{grid-column:1/-1;padding:18px 26px 20px;border-radius:24px;background:#fff;border:2px dashed currentColor;position:relative}
.widget .body{display:flex;align-items:center;gap:40px}
.widget .wt{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.widget .wt h3{font-size:22px;letter-spacing:.06em;text-transform:uppercase;color:currentColor;display:flex;align-items:center;gap:10px}
.widget .btn{padding:8px 18px;font-size:18px}

/* widget McDougall · contagio */
.crowd{display:grid;grid-template-columns:repeat(20,32px);gap:8px}
.crowd i{display:block;aspect-ratio:1;border-radius:50%;background:#DED9EE;transition:background .35s,transform .35s}
.crowd i.hot{background:var(--origen);transform:scale(1.15)}
.meter{flex:1;display:flex;align-items:center;gap:14px;font-size:22px;font-weight:800;color:var(--muted)}
.meter .bar{flex:1;height:16px;border-radius:99px;background:#EEE9F6;overflow:hidden}
.meter .bar i{display:block;height:100%;width:100%;background:var(--desarrollo);transition:width 2.4s ease}
.meter .val{min-width:70px;text-align:right;color:var(--ink)}

/* widget Ross · imitación */
.people{display:flex;gap:44px;align-items:flex-end;padding:0 10px}
.people svg{width:58px;height:100px;overflow:visible}
.people .fig .arm{transform-origin:24px 46px;transition:transform .45s cubic-bezier(.2,.8,.2,1)}
.people .fig.up .arm{transform:rotate(-120deg)}
.people .fig circle,.people .fig path{stroke:#B9B4D6;transition:stroke .4s}
.people .fig.up circle,.people .fig.up path{stroke:var(--origen)}
.people .fig.lead circle,.people .fig.lead path{stroke:var(--ink)}
.people .fig.lead.up circle,.people .fig.lead.up path{stroke:var(--origen)}
.flow{display:flex;gap:12px;font-size:22px;font-weight:800;color:var(--muted);align-items:center}
.flow span{padding:8px 18px;border-radius:99px;background:#F3EFFF;transition:background .3s,color .3s}
.flow span.on{background:var(--origen);color:#fff}

/* widget Thurstone · escala */
.scale{flex:1;max-width:1400px}
.scale .stmt{font-size:24px;font-weight:800;margin-bottom:10px}
.scale .cont{position:relative;height:22px;border-radius:99px;background:linear-gradient(90deg,#F26B4C,#FFD166,#0FA3B1)}
.scale .cont i{position:absolute;top:50%;width:6px;height:34px;background:rgba(255,255,255,.7);transform:translate(-50%,-50%);border-radius:3px}
.scale input{width:100%;margin:6px 0 0;accent-color:var(--desarrollo);height:30px}
.scale .lbls{display:flex;justify-content:space-between;font-size:18px;font-weight:700;color:var(--muted)}
.scale .out{margin-top:4px;display:flex;align-items:center;gap:16px;font-size:22px;font-weight:800}
.scale .out b{font-size:36px;color:var(--desarrollo)}
.scale .out .word{padding:6px 16px;border-radius:99px;background:var(--desarrollo-soft);color:var(--desarrollo)}

/* widget Milgram · obediencia */
.mil{display:flex;gap:36px;align-items:center;flex:1}
.gauge{width:200px;height:130px;position:relative}
.gauge svg{width:100%;height:100%;overflow:visible}
.gauge .needle{transform-origin:100px 110px;transform:rotate(-90deg);transition:transform 3s cubic-bezier(.3,.7,.3,1)}
.gauge .v{position:absolute;left:0;right:0;bottom:-8px;text-align:center;font-size:24px;font-weight:900;color:var(--desarrollo)}
.subjects{display:grid;grid-template-columns:repeat(20,34px);gap:7px}
.subjects i{display:block;aspect-ratio:1;border-radius:8px;background:#E4E0F0;transition:background .25s,transform .25s;position:relative}
.subjects i::before{content:"";position:absolute;left:50%;top:22%;width:32%;height:32%;border-radius:50%;background:#fff;transform:translateX(-50%)}
.subjects i::after{content:"";position:absolute;left:50%;bottom:10%;width:60%;height:34%;border-radius:40px 40px 6px 6px;background:#fff;transform:translateX(-50%)}
.subjects i.ob{background:var(--desarrollo);transform:scale(1.06)}
.mil .stat{display:flex;gap:26px;align-items:baseline;font-size:22px;font-weight:800;color:var(--muted);margin-top:10px}
.mil .stat b{font-size:40px;color:var(--desarrollo)}
.mil .stat b{font-size:44px;color:var(--desarrollo)}

/* widget Gergen · leyes universales */
.laws{position:relative;height:130px;width:760px;flex:none;border-radius:20px;background:var(--crisis-soft);overflow:hidden}
.laws .piece{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:40px;font-weight:900;letter-spacing:.06em;color:var(--crisis);transition:transform 1.1s cubic-bezier(.5,0,.8,.4),opacity 1.1s}
.laws.cracked .piece{opacity:0}
.laws.cracked .p1{transform:translate(-140px,220px) rotate(-30deg)}.laws.cracked .p2{transform:translate(-40px,240px) rotate(14deg)}.laws.cracked .p3{transform:translate(60px,230px) rotate(-10deg)}.laws.cracked .p4{transform:translate(160px,220px) rotate(26deg)}
.laws .after{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;opacity:0;transform:scale(.9);transition:opacity .6s .8s,transform .6s .8s}
.laws.cracked .after{opacity:1;transform:none}
.laws .after b{font-size:38px;color:var(--crisis);letter-spacing:.04em}
.laws .after span{font-size:20px;font-weight:700;color:var(--muted)}
.chips{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.chips span{padding:8px 18px;border-radius:99px;background:#fff;border:2px solid var(--crisis-soft);font-size:19px;font-weight:800;color:var(--crisis);opacity:0;transform:translateY(8px);transition:opacity .4s,transform .4s}
.chips.on span{opacity:1;transform:none}
.chips.on span:nth-child(2){transition-delay:.15s}.chips.on span:nth-child(3){transition-delay:.3s}

/* ---------------- 8 · Cierre ---------------- */
.close h2{font-size:64px;text-align:center}
.close .lead{text-align:center;font-size:30px;color:var(--muted);font-weight:700;margin:14px 0 54px}
.flips{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;perspective:2000px}
.flip{height:480px;position:relative;cursor:pointer}
.flip .in{position:absolute;inset:0;transition:transform .8s cubic-bezier(.2,.8,.2,1);transform-style:preserve-3d}
.flip.on .in{transform:rotateY(180deg)}
.flip .f,.flip .b{position:absolute;inset:0;backface-visibility:hidden;border-radius:var(--r);padding:44px 40px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;gap:14px}
.flip .f{border:3px solid currentColor;background:#fff}
.flip .f .ico{font-size:110px}
.flip .f h3{font-size:46px}
.flip .f .yrs{font-size:26px;font-weight:800;color:var(--muted)}
.flip .f .tap{margin-top:16px;font-size:19px;font-weight:800;color:var(--soft)}
.flip .b{transform:rotateY(180deg);color:#fff;background:currentColor}
.flip .b .who{font-size:32px;font-weight:900;color:#fff}
.flip .b p{margin:0;font-size:25px;line-height:1.35;color:#fff;font-weight:700}
.close .end{margin-top:46px;text-align:center;font-size:34px;font-weight:800;color:var(--muted)}
.close .end b{color:var(--ink)}

/* ---------------- 9 · Referencias ---------------- */
.refs h2{font-size:62px;display:flex;align-items:center;gap:18px}
.refs h2 .ico{color:var(--desarrollo)}
.refs .apa{font-size:23px;color:var(--muted);font-weight:700;margin:8px 0 34px;display:flex;gap:14px;align-items:center}
.refs .apa .ok{padding:6px 14px;border-radius:99px;background:var(--desarrollo-soft);color:var(--desarrollo);font-weight:900;font-size:19px}
.refs ol{list-style:none;margin:0;padding:0;display:grid;gap:18px}
.refs li{font-size:24px;line-height:1.4;padding:14px 22px 14px 96px;text-indent:-74px;border-radius:18px;background:rgba(255,255,255,.7);border:2px solid transparent;transition:border-color .2s,transform .2s}
.refs li:hover{border-color:var(--desarrollo);transform:translateX(6px)}
.refs li i{color:var(--muted)}
.refs li .url{color:var(--desarrollo);font-weight:700;word-break:break-all}
.refs .thanks{margin-top:34px;text-align:center;font-size:40px;font-weight:900}
.refs .thanks small{display:block;font-size:22px;color:var(--muted);font-weight:700;margin-top:6px}

/* ---------------- HUD ---------------- */
#hud{position:fixed;left:0;right:0;bottom:0;z-index:5;transition:opacity .4s}
body.idle #hud,body.idle #help{opacity:0;pointer-events:none}
#bar{position:fixed;left:0;right:0;top:0;height:6px;background:rgba(30,27,58,.08)}
#bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--origen),var(--desarrollo),var(--crisis));transition:width .5s cubic-bezier(.2,.8,.2,1)}
#dots{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);display:flex;gap:10px;padding:10px 14px;border-radius:999px;background:rgba(255,255,255,.8);backdrop-filter:blur(8px);box-shadow:0 6px 20px rgba(30,27,58,.12)}
#dots button{width:14px;height:14px;border-radius:50%;border:0;background:#D9D3E8;cursor:pointer;padding:0;transition:transform .2s,background .2s;position:relative}
#dots button.on{background:var(--ink);transform:scale(1.35)}
#dots button:hover{transform:scale(1.4)}
#dots button::after{content:attr(data-t);position:absolute;bottom:22px;left:50%;transform:translateX(-50%);white-space:nowrap;font-size:12px;font-weight:800;color:#fff;background:var(--ink);padding:4px 8px;border-radius:6px;opacity:0;pointer-events:none;transition:opacity .15s}
#dots button:hover::after{opacity:1}
#ctl{position:fixed;right:22px;bottom:18px;display:flex;gap:8px}
#ctl button{width:50px;height:50px;border-radius:50%;border:2px solid var(--ink);background:#fff;color:var(--ink);font-size:20px;cursor:pointer;display:grid;place-items:center;transition:transform .15s,background .15s}
#ctl button:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
#ctl button .ico{font-size:22px}
#counter{position:fixed;left:24px;bottom:30px;font-size:15px;font-weight:800;color:var(--soft);letter-spacing:.1em}
#timer{position:fixed;right:24px;top:18px;z-index:6;font:900 22px/1 ui-monospace,Menlo,monospace;color:var(--ink);padding:10px 14px;border-radius:12px;background:rgba(255,255,255,.85);box-shadow:0 6px 16px rgba(30,27,58,.12);display:none;align-items:center;gap:10px}
#timer.on{display:flex}#timer.warn{color:#B45309}#timer.over{color:#DC2626}
#help{position:fixed;left:20px;top:16px;z-index:6;font-size:13px;font-weight:700;color:var(--soft);transition:opacity .4s}
#help kbd{font:inherit;padding:2px 7px;border:1.5px solid #D9D3E8;border-radius:6px;background:#fff;margin-right:2px}
#notes{position:fixed;left:0;right:0;bottom:0;z-index:7;max-height:40vh;overflow:auto;background:#FFFBE8;color:#1b1b1b;padding:16px 28px 26px;font-size:17px;line-height:1.55;border-top:4px solid var(--sun);transform:translateY(105%);transition:transform .3s}
#notes.on{transform:none}
#notes .nh{display:flex;justify-content:space-between;font-weight:900;margin-bottom:6px;color:#6b6b6b;font-size:13px;letter-spacing:.08em;text-transform:uppercase}
#notes p{margin:0 0 8px}
#notes .t{display:inline-block;padding:2px 10px;border-radius:99px;background:var(--sun);font-weight:900;font-size:13px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition-duration:.01ms!important}}

/* =====================================================================
   MODO LECTURA (móvil / tablet): se activa con body.mobile cuando el
   escenario 16:9 quedaría por debajo del 55 % (JS). Una columna, texto
   fluido, línea del tiempo con scroll horizontal (sigue de izq. a der.).
   ===================================================================== */
body.mobile{overflow:auto;-webkit-text-size-adjust:100%}
body.mobile.idle{cursor:auto}
body.mobile #stage{position:relative;left:auto;top:auto;width:100%;height:auto;transform:none!important;min-height:100dvh;padding-bottom:96px}
body.mobile .slide{position:relative;inset:auto;display:none;padding:20px 16px 24px;transform:none;min-height:calc(100dvh - 96px)}
body.mobile .slide:not(.active){display:none!important}
body.mobile .slide{display:block}
body.mobile .rise{transition-delay:0s!important}
body.mobile h1,body.mobile h2{line-height:1.08}
body.mobile .tag{font-size:12px;padding:6px 12px;gap:6px}
body.mobile .overline{font-size:12px;letter-spacing:.12em}
body.mobile .btn{font-size:14px;padding:9px 16px}

/* portada */
body.mobile .cover{display:flex;flex-direction:column;gap:22px;justify-content:flex-start}
body.mobile .cover .left{gap:14px}
body.mobile .cover .uni{font-size:14px;gap:8px}body.mobile .cover .uni .ico{font-size:22px}
body.mobile .cover .kicker{font-size:12px;padding:6px 14px}
body.mobile .cover h1{font-size:clamp(34px,9vw,48px)}
body.mobile .cover .sub{font-size:16px}
body.mobile .cover .stages{flex-wrap:wrap;gap:8px}
body.mobile .idcard{transform:none;padding:22px 20px;gap:10px 14px;font-size:15px;grid-template-columns:auto 1fr;border-radius:18px}
body.mobile .idcard::before{width:90px;height:20px;top:-10px}
body.mobile .idcard .k{font-size:11px;gap:6px}body.mobile .idcard .k .ico{font-size:16px}
body.mobile .idcard .v.big{font-size:17px}

/* línea del tiempo: scroll horizontal, siempre de izquierda a derecha */
body.mobile .tl-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:18px}
body.mobile .tl-head h2{font-size:clamp(24px,6.5vw,34px)}
body.mobile .tl-head .legend{gap:8px;flex-wrap:wrap}body.mobile .legend .tag{font-size:11px;padding:5px 10px}
body.mobile .timeline{height:auto;display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;padding:8px 4px 18px;margin:0 -16px;padding-left:16px;padding-right:16px;-webkit-overflow-scrolling:touch}
body.mobile .track{display:none}
body.mobile .node{position:static;transform:none!important;opacity:1!important;flex:0 0 250px;scroll-snap-align:start;text-align:left;display:flex;flex-direction:column}
body.mobile .node .year{font-size:34px;margin-bottom:6px}
body.mobile .node .tag{margin-bottom:10px;align-self:flex-start}
body.mobile .node .dot{width:22px;height:22px;border:6px solid currentColor;margin:0;box-shadow:0 0 0 3px #fff;position:relative}
body.mobile .node .dot::after{content:"";position:absolute;left:22px;top:50%;width:260px;height:4px;background:currentColor;opacity:.45;transform:translateY(-50%)}
body.mobile .node.n5 .dot::after{width:40px;border-radius:0 4px 4px 0}
body.mobile .node .ncard{margin-top:14px;padding:16px;min-height:0;flex:1;border-radius:16px}
body.mobile .node .ncard .who{font-size:18px;gap:8px}body.mobile .node .ncard .who .ico{font-size:22px}
body.mobile .node .ncard p{font-size:14px}
body.mobile .node .ncard .more{opacity:1;position:static;display:block;margin-top:10px;font-size:13px}
body.mobile .tl-hint{position:static;font-size:13px;margin-top:6px}

/* autor: una columna */
body.mobile .author{display:flex;flex-direction:column;gap:14px;padding-top:70px}
body.mobile .mini{left:16px;right:16px;top:18px}
body.mobile .mini .pt{width:14px;height:14px;border-width:3px}
body.mobile .mini .pt span{font-size:10px;top:18px}
body.mobile .mini .pt.cur{transform:scale(1.2)}
body.mobile .portrait{width:min(62vw,240px);height:auto;aspect-ratio:4/5;border-width:4px;border-radius:18px;transform:none;margin:0 auto}
body.mobile .portrait .num{font-size:16px;padding:4px 12px;border-top-right-radius:12px}
body.mobile .author .txt{gap:8px}
body.mobile .author .top{flex-wrap:wrap;gap:8px}
body.mobile .author h1{font-size:clamp(28px,8vw,40px)}
body.mobile .author .year{font-size:16px;gap:8px}body.mobile .author .year b{font-size:26px}body.mobile .author .year .ico{font-size:20px}
body.mobile .author .obra{font-size:14px;align-items:flex-start}body.mobile .author .obra .ico{font-size:18px;margin-top:2px}
body.mobile .author li{font-size:16px;padding-left:22px}body.mobile .author li::before{width:10px;height:10px;top:7px}
body.mobile .author .cite{font-size:13px;padding:8px 12px;align-self:stretch;flex-wrap:wrap;gap:6px}
body.mobile .widget{padding:14px;border-radius:16px}
body.mobile .widget .wt{flex-wrap:wrap;gap:8px}body.mobile .widget .wt h3{font-size:13px;gap:6px}
body.mobile .widget .body{flex-direction:column;align-items:stretch;gap:14px}
body.mobile .crowd{grid-template-columns:repeat(10,1fr);gap:5px}
body.mobile .meter{font-size:13px;gap:8px}body.mobile .meter .bar{height:10px}body.mobile .meter .val{min-width:44px}
body.mobile .people{gap:0;justify-content:space-between;padding:0}body.mobile .people svg{width:34px;height:64px}
body.mobile .flow{font-size:12px;gap:6px;justify-content:center}body.mobile .flow span{padding:5px 10px}
body.mobile .scale .stmt{font-size:15px}body.mobile .scale .cont{height:14px}body.mobile .scale .cont i{height:24px}
body.mobile .scale .lbls{font-size:11px}body.mobile .scale .lbls span:nth-child(2){display:none}
body.mobile .scale .out{font-size:14px;gap:8px;flex-wrap:wrap}body.mobile .scale .out b{font-size:24px}
body.mobile .mil{flex-direction:column;align-items:stretch;gap:12px}
body.mobile .gauge{width:150px;height:98px;margin:0 auto}body.mobile .gauge .v{font-size:16px}
body.mobile .subjects{grid-template-columns:repeat(10,1fr);gap:5px}
body.mobile .mil .stat{font-size:13px;gap:12px;flex-wrap:wrap}body.mobile .mil .stat b{font-size:24px}
body.mobile .laws{width:100%;height:96px;border-radius:14px}
body.mobile .laws .piece{font-size:22px;letter-spacing:.03em}
body.mobile .laws .after b{font-size:20px}body.mobile .laws .after span{font-size:12px;padding:0 10px;text-align:center}
body.mobile .chips{flex-direction:row;flex-wrap:wrap;gap:6px}body.mobile .chips span{font-size:12px;padding:5px 10px}

/* cierre */
body.mobile .close h2{font-size:clamp(26px,7vw,36px)}
body.mobile .close .lead{font-size:15px;margin:8px 0 18px}
body.mobile .flips{grid-template-columns:1fr;gap:14px;perspective:1200px}
body.mobile .flip{height:200px}
body.mobile .flip .f,body.mobile .flip .b{padding:18px;gap:6px;border-radius:18px}
body.mobile .flip .f .ico{font-size:52px}body.mobile .flip .f h3{font-size:26px}body.mobile .flip .f .yrs{font-size:15px}body.mobile .flip .f .tap{font-size:12px;margin-top:4px}
body.mobile .flip .b .who{font-size:20px}body.mobile .flip .b p{font-size:15px}
body.mobile .close .end{font-size:17px;margin-top:22px}

/* referencias */
body.mobile .refs h2{font-size:clamp(26px,7vw,36px);gap:10px}
body.mobile .refs .apa{font-size:13px;margin:6px 0 16px;flex-wrap:wrap;gap:8px}body.mobile .refs .apa .ok{font-size:12px;padding:4px 10px}
body.mobile .refs ol{gap:10px}
body.mobile .refs li{font-size:14px;padding:10px 12px 10px 34px;text-indent:-22px;border-radius:12px}
body.mobile .refs .thanks{font-size:22px;margin-top:22px}body.mobile .refs .thanks small{font-size:13px}

/* HUD móvil: siempre visible, más grande para el dedo */
body.mobile #help{display:none}
body.mobile #hud,body.mobile.idle #hud{opacity:1;pointer-events:auto}
body.mobile #counter{left:14px;bottom:26px;font-size:13px}
body.mobile #dots{bottom:12px;gap:8px;padding:8px 12px;left:50%;max-width:calc(100vw - 200px)}
body.mobile #dots button{width:10px;height:10px}
body.mobile #dots button::after{display:none}
body.mobile #ctl{right:12px;bottom:12px;gap:6px}
body.mobile #ctl button{width:46px;height:46px}
body.mobile #timer{right:12px;top:10px;font-size:16px;padding:8px 10px}
body.mobile #notes{max-height:50vh;font-size:15px;padding:12px 16px 20px}

/* --- afinado móvil --- */
body.mobile #hud::before{content:"";position:fixed;left:0;right:0;bottom:0;height:84px;background:linear-gradient(180deg,rgba(255,247,236,0),rgba(255,247,236,.92) 55%);pointer-events:none}
body.mobile .mini .pt:first-child span{left:0;transform:none}
body.mobile .mini .pt:last-child span{left:auto;right:0;transform:none}
body.mobile .mini .pt.cur:first-child span{transform:scale(.85);transform-origin:left}
body.mobile .mini .pt.cur:last-child span{transform:scale(.85);transform-origin:right}
.tl-hint .m{display:none}
body.mobile .tl-hint .d{display:none}body.mobile .tl-hint .m{display:inline}
/* teléfono horizontal y tablet: ficha de autor en dos columnas */
@media (min-width:700px){
  body.mobile .author{display:grid;grid-template-columns:220px 1fr;grid-template-rows:auto auto;gap:12px 22px;align-items:start;align-content:start}
  body.mobile .portrait{width:220px;margin:0}
  body.mobile .widget{grid-column:1/-1}
  body.mobile .cover{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:start}
  body.mobile .flips{grid-template-columns:repeat(3,1fr)}
  body.mobile .flip{height:230px}
  body.mobile .widget .body{flex-direction:row;align-items:center;gap:22px}
  body.mobile .crowd{grid-template-columns:repeat(20,1fr);flex:1}
  body.mobile .subjects{grid-template-columns:repeat(20,1fr)}
  body.mobile .mil{flex-direction:row;align-items:center}
  body.mobile .laws{width:auto;flex:1}
  body.mobile .chips{flex-direction:column;flex-wrap:nowrap}
}