/* Shell: barra superior, pestañas, paneles, barra inferior móvil, cinta demo, acceso, paleta */

.top{position:sticky;top:0;z-index:50;height:var(--top-h);display:grid;grid-template-columns:auto auto 1fr auto;align-items:center;gap:24px;padding:0 var(--gut);background:var(--top-bg);backdrop-filter:blur(20px) saturate(150%);-webkit-backdrop-filter:blur(20px) saturate(150%);border-bottom:1px solid var(--line)}
.top::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:linear-gradient(90deg,transparent,rgba(255,154,77,.45) 30%,rgba(255,154,77,.45) 70%,transparent);opacity:.6;pointer-events:none}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--mono);font-size:12.5px;letter-spacing:.22em;font-weight:500;white-space:nowrap;color:var(--ivory);padding:6px 4px;border-radius:10px}
.brand img{width:22px;height:auto;filter:drop-shadow(0 4px 12px rgba(255,106,19,.35))}
.brand b{font-weight:500;color:var(--orange-t)}
.tabs{position:relative;justify-self:center;display:flex;gap:2px;padding:4px;border-radius:999px;background:rgba(var(--tint),.04);box-shadow:inset 0 0 0 1px var(--line)}
.tab{position:relative;z-index:1;padding:8px 16px;border-radius:999px;font-size:14.5px;font-weight:500;color:var(--t72);transition:color .35s}
.tab:hover{color:var(--ivory)}
.tab.on{color:#fff;font-weight:600}
.tab-ind{position:absolute;z-index:0;top:4px;bottom:4px;left:0;border-radius:999px;background:var(--grad-btn);box-shadow:0 8px 22px rgba(242,56,11,.38),inset 0 1px 0 rgba(255,255,255,.35);transition:transform .55s var(--e-spring),width .55s var(--e-spring),opacity .3s;opacity:0}
.top-actions{display:flex;align-items:center;gap:10px}
.search-trigger{display:flex;align-items:center;gap:10px;height:40px;padding:0 10px 0 13px;border-radius:999px;color:var(--t62);background:rgba(var(--tint),.04);box-shadow:inset 0 0 0 1px var(--line);font-size:14px;transition:background-color .3s,box-shadow .3s,color .3s;min-width:190px}
.search-trigger:hover{color:var(--ivory);background:rgba(var(--tint),.08);box-shadow:inset 0 0 0 1px var(--line3)}
.search-trigger .ic{width:17px;height:17px}
.search-trigger kbd{margin-left:auto;font-family:var(--mono);font-size:11px;letter-spacing:.04em;padding:3px 7px;border-radius:7px;background:rgba(var(--tint),.07);box-shadow:inset 0 0 0 1px var(--line);color:var(--t62)}
.me-btn{display:grid;border-radius:50%;transition:transform .4s var(--e-out)}
.me-btn:hover{transform:scale(1.05)}

.pop-wrap{position:relative}
.pop{position:absolute;right:0;top:calc(100% + 12px);z-index:60;width:min(380px,calc(100vw - 24px));background:linear-gradient(160deg,var(--panel-a),var(--panel-b));border-color:var(--line2);border-radius:22px;box-shadow:0 30px 80px rgba(var(--sh),calc(.6 * var(--shk))),0 0 40px rgba(255,106,19,.1),inset 0 1px 0 rgba(255,255,255,.07);transform-origin:top right;animation:popIn .4s var(--e-out)}
@keyframes popIn{from{opacity:0;transform:translateY(-6px) scale(.97)}}
.me-pop{width:280px;padding:10px}
.me-head{display:flex;align-items:center;gap:12px;padding:10px 10px 14px;border-bottom:1px solid var(--line);margin-bottom:6px}
.me-head b{display:block;font-size:15px;letter-spacing:-.01em}
.me-head small{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--t50)}
.menu-i{display:flex;align-items:center;gap:12px;width:100%;padding:11px 12px;border-radius:12px;font-size:14.5px;color:var(--t80);text-align:left;transition:background-color .25s,color .25s}
.menu-i:hover,.menu-i:focus-visible{background:rgba(var(--tint),.07);color:var(--ivory)}
.menu-i .ic{width:18px;height:18px;color:var(--orange-l)}
.switch-row{justify-content:space-between;cursor:pointer}
.switch-row>span:first-child{display:flex;align-items:center;gap:12px}
.me-pop hr{border:0;height:1px;background:var(--line);margin:6px 4px}

/* notificaciones */
.notif-pop{padding:0;overflow:hidden}
.np-h{display:flex;align-items:center;justify-content:space-between;padding:16px 18px 12px;border-bottom:1px solid var(--line)}
.np-h h2{font-size:17px;letter-spacing:-.02em}
.np-h button{font-size:13px;color:var(--orange-t);font-weight:600;padding:4px 6px;border-radius:8px}
.np-h button:hover{color:var(--yellow)}
.np-list{max-height:min(420px,60svh);overflow:auto;padding:6px}
.np-i{position:relative;display:flex;gap:12px;align-items:flex-start;padding:12px;border-radius:14px;transition:background-color .25s}
.np-i:hover{background:rgba(var(--tint),.06)}
.np-i.unread::after{content:"";position:absolute;right:12px;top:18px;width:8px;height:8px;border-radius:50%;background:var(--orange);box-shadow:0 0 10px var(--orange)}
.np-i p{font-size:14px;color:var(--t80);line-height:1.4;padding-right:16px}
.np-i small{display:block;margin-top:3px;font-size:12px;color:var(--t50)}
.np-ic{flex:none;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:rgba(255,106,19,.14);color:var(--orange-l);box-shadow:inset 0 0 0 1px rgba(255,106,19,.3)}
.np-ic .ic{width:17px;height:17px}

/* vista */
.view{position:relative;max-width:var(--max);margin:0 auto;padding:28px var(--gut) 80px;min-height:calc(100svh - var(--top-h));outline:none}
.view-enter{animation:viewIn .6s var(--e-out)}
@keyframes viewIn{from{opacity:0;transform:translateY(10px);filter:blur(4px)}to{opacity:1;transform:none;filter:none}}

/* barra inferior tipo app */
.bottom{display:none}
.ribbon{display:inline-flex;align-items:center;gap:7px;padding:5px 10px;border-radius:999px;font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:var(--yellow);background:rgba(255,194,31,.07);border:1px solid rgba(255,194,31,.32);white-space:nowrap;justify-self:start}
.ribbon i{width:6px;height:6px;border-radius:50%;background:var(--yellow);box-shadow:0 0 8px var(--yellow)}

@media(max-width:1080px){.search-trigger{min-width:0;width:40px;padding:0;justify-content:center}.search-trigger .st-label,.search-trigger kbd{display:none}}
@media(max-width:860px){
  :root{--top-h:60px;--bottom-h:calc(64px + env(safe-area-inset-bottom))}
  .top{grid-template-columns:auto 1fr auto;gap:10px}
  .tabs{display:none}
  .hide-sm{display:none}
  .bottom{position:fixed;left:0;right:0;bottom:0;z-index:55;display:grid;grid-template-columns:repeat(5,1fr);height:var(--bottom-h);padding:6px 6px env(safe-area-inset-bottom);background:var(--bar-bg);backdrop-filter:blur(22px) saturate(160%);-webkit-backdrop-filter:blur(22px) saturate(160%);border-top:1px solid var(--line)}
  .bottom a{position:relative;display:grid;justify-items:center;align-content:center;gap:3px;font-size:10.5px;font-weight:500;color:var(--t62);border-radius:14px;transition:color .3s}
  .bottom a .ic{width:22px;height:22px;transition:transform .5s var(--e-spring)}
  .bottom a.on{color:var(--ivory)}
  .bottom a.on .ic{color:var(--orange-l);transform:translateY(-2px);filter:drop-shadow(0 4px 10px rgba(255,106,19,.6))}
  .bottom a.on::before{content:"";position:absolute;top:-6px;width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--grad-btn);box-shadow:0 0 12px var(--orange)}
  .bottom .dot-badge{top:2px;right:calc(50% - 22px)}
  .view{padding:20px var(--gut) calc(var(--bottom-h) + 40px)}
  .ribbon .rb-long{display:none}
}
@media(max-width:420px){.brand{font-size:10.5px;letter-spacing:.14em;gap:8px}.brand img{width:18px}.top-actions{gap:6px}.icon-btn{width:38px;height:38px}}
@media(max-width:480px){.brand-t{display:none}}

/* ---------- acceso ---------- */
.view-login{max-width:none;padding:0;min-height:100svh;display:grid;grid-template-columns:1.08fr .92fr}
.login-art{position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:space-between;padding:clamp(28px,4vw,56px);min-height:100svh;border-right:1px solid var(--line)}
.login-art::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(700px 520px at 30% 45%,rgba(255,106,19,.32),transparent 65%),radial-gradient(500px 400px at 85% 90%,rgba(255,194,31,.12),transparent 65%)}
.login-art .brand{font-size:13px}
.la-stage{position:relative;flex:1;display:grid;place-items:center;min-height:360px}
.la-stage .cosmo{width:min(440px,72%);aspect-ratio:1}
.la-ring{position:absolute;left:50%;top:50%;border-radius:50%;border:1px solid rgba(var(--tint),.08);translate:-50% -50%;pointer-events:none}
.la-ring.r1{width:min(560px,92%);aspect-ratio:1;animation:spin 70s linear infinite}
.la-ring.r1::after{content:"";position:absolute;top:50%;left:-4px;width:8px;height:8px;border-radius:50%;background:var(--yellow);box-shadow:0 0 16px var(--yellow)}
.la-ring.r2{width:min(720px,118%);aspect-ratio:1;border-style:dashed;border-color:rgba(255,154,77,.12);animation:spin 110s linear infinite reverse}
@keyframes spin{to{transform:rotate(360deg)}}
.la-obj{position:absolute;filter:drop-shadow(0 30px 40px rgba(242,56,11,.35));animation:bob 7s ease-in-out infinite}
.la-obj.o1{width:clamp(70px,8vw,120px);right:8%;top:10%;rotate:10deg}
.la-obj.o2{width:clamp(60px,7vw,100px);left:6%;bottom:14%;rotate:-12deg;animation-delay:-3s;animation-duration:8.5s}
@keyframes bob{0%,100%{translate:0 0}50%{translate:0 -14px}}
.la-copy h1{font-size:clamp(38px,4.6vw,68px)}
.la-copy p{margin-top:16px;max-width:460px;font-size:17px}
.la-foot{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:26px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--t50)}
.login-side{display:grid;place-items:center;padding:clamp(24px,4vw,56px) var(--gut)}
.login-card{width:min(440px,100%);padding:clamp(26px,3.4vw,40px)}
.login-card h2{font-size:30px;margin:14px 0 8px}
.login-card>p{font-size:15px;margin-bottom:24px}
.login-card form{display:grid;gap:12px}
.or{display:flex;align-items:center;gap:12px;margin:18px 0;font-family:var(--mono);font-size:10.5px;letter-spacing:.2em;color:var(--t50)}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}
.btn-google{background:#F7F3EC;color:#1A0A03;box-shadow:0 12px 30px rgba(var(--sh),calc(.35 * var(--shk))),inset 0 -1px 0 rgba(var(--sh),calc(.15 * var(--shk)))}
.btn-google:hover{box-shadow:0 18px 40px rgba(var(--sh),calc(.45 * var(--shk))),inset 0 -1px 0 rgba(var(--sh),calc(.15 * var(--shk)))}
.btn-google .ic{width:18px;height:18px}
.admin-link{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;margin-top:16px;padding:10px;border-radius:12px;font-size:14px;color:var(--t62);transition:color .3s,background-color .3s}
.admin-link:hover{color:var(--ivory);background:rgba(var(--tint),.05)}
.admin-link .ic{width:16px;height:16px;color:var(--orange-l)}
.sent{display:grid;justify-items:center;text-align:center;gap:12px;padding:6px 0}
.sent-ic{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:rgba(255,106,19,.14);box-shadow:inset 0 0 0 1px rgba(255,106,19,.4),0 0 40px rgba(255,106,19,.25);color:var(--orange-t);animation:pop .6s var(--e-spring)}
.sent-ic .ic{width:28px;height:28px}
.sent p{font-size:15px}
.demo-note{margin-top:20px;padding:12px 14px;border-radius:14px;border:1px dashed rgba(255,194,31,.35);background:rgba(255,194,31,.06);font-size:13px;color:var(--t72);line-height:1.5}
.demo-note b{color:var(--yellow);font-family:var(--mono);font-weight:500;font-size:10.5px;letter-spacing:.16em;display:block;margin-bottom:4px}
@media(max-width:960px){
  .view-login{grid-template-columns:1fr}
  .login-art{min-height:0;border-right:0;border-bottom:1px solid var(--line);padding-bottom:20px}
  .la-stage{min-height:240px}
  .la-stage .cosmo{width:min(260px,62%)}
  .la-copy h1{font-size:clamp(34px,8vw,48px)}
}

/* ---------- paleta Cmd+K ---------- */
.dlg.palette{max-width:min(640px,calc(100vw - 24px));margin-top:12vh;margin-bottom:auto}
.palette .dlg-in{padding:0;border-radius:24px}
.pal-in{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--line)}
.pal-in .ic{color:var(--orange-l)}
.pal-in input{flex:1;min-width:0;background:transparent;border:0;outline:0;font-size:18px;color:var(--ivory)}
.pal-in input::placeholder{color:var(--t50)}
.pal-in kbd{font-family:var(--mono);font-size:11px;padding:3px 7px;border-radius:7px;background:rgba(var(--tint),.07);box-shadow:inset 0 0 0 1px var(--line);color:var(--t62)}
.pal-res{max-height:min(460px,58svh);overflow:auto;padding:8px}
.pal-g{padding:12px 12px 6px;font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--t50)}
.pal-i{display:flex;align-items:center;gap:12px;width:100%;padding:11px 12px;border-radius:14px;text-align:left;color:var(--t80);transition:background-color .2s,color .2s}
.pal-i .pal-ic{flex:none;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:rgba(var(--tint),.05);box-shadow:inset 0 0 0 1px var(--line);color:var(--orange-l)}
.pal-i .pal-ic .ic{width:17px;height:17px}
.pal-i b{display:block;font-weight:600;font-size:14.5px;color:var(--ivory);letter-spacing:-.01em}
.pal-i small{display:block;font-size:12.5px;color:var(--t50);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:46ch}
.pal-i span:nth-child(2){min-width:0;flex:1}
.pal-i[aria-selected=true]{background:linear-gradient(90deg,rgba(255,106,19,.18),rgba(255,106,19,.05));color:var(--ivory);box-shadow:inset 0 0 0 1px rgba(255,106,19,.35)}
.pal-i[aria-selected=true] .pal-ic{background:var(--grad-btn);color:#fff;box-shadow:none}
.pal-i .lock{margin-left:auto;color:var(--t50);width:15px;height:15px}
.pal-i mark{background:none;color:var(--orange-t);font-weight:700}
.pal-foot{display:flex;gap:16px;padding:10px 18px;border-top:1px solid var(--line);font-size:12px;color:var(--t50)}
.pal-foot kbd{font-family:var(--mono);font-size:10.5px;padding:2px 6px;border-radius:6px;background:rgba(var(--tint),.07);margin-right:4px}
.pal-empty{padding:34px 16px;text-align:center;color:var(--t50);font-size:14.5px}
@media(max-width:560px){.pal-foot{display:none}.dlg.palette{margin-top:8px}}
.la-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.menu-i .tt-ic{display:inline-grid}
/* la S es blanca: en claro se oscurece para que contraste */
:root[data-theme="light"] .brand img,:root[data-theme="light"] .boot img{filter:brightness(0) saturate(100%) invert(6%) sepia(30%) saturate(3000%) hue-rotate(5deg);}
:root[data-theme="light"] .brand b{color:var(--orange-t)}
.pop.glass{backdrop-filter:none;-webkit-backdrop-filter:none;background:linear-gradient(160deg,var(--panel-a),var(--panel-b)),var(--ink)}
@media(max-width:560px){.top .pop{position:fixed;left:12px;right:12px;top:calc(var(--top-h) + 8px);width:auto}.top .me-pop{left:auto;width:min(300px,calc(100vw - 24px))}}

/* ---------- botón «subir» (lado derecho) ---------- */
.to-top{position:fixed;right:clamp(14px,2.2vw,28px);bottom:calc(var(--bottom-h,0px) + clamp(16px,2.4vw,28px) + env(safe-area-inset-bottom,0px));z-index:90;width:54px;height:54px;border-radius:50%;border:0;padding:0;cursor:pointer;display:grid;place-items:center;color:var(--ivory,#F7F3EC);background:rgba(var(--field,12,9,7),.72);backdrop-filter:blur(14px) saturate(150%);-webkit-backdrop-filter:blur(14px) saturate(150%);box-shadow:0 14px 34px rgba(0,0,0,.35),inset 0 0 0 1px rgba(var(--tint,247,243,236),.14);opacity:0;visibility:hidden;transform:translateY(16px) scale(.9);transition:opacity .35s,transform .45s cubic-bezier(.16,1,.3,1),visibility 0s .45s,box-shadow .3s}
.to-top.show{opacity:1;visibility:visible;transform:none;transition:opacity .35s,transform .45s cubic-bezier(.16,1,.3,1),visibility 0s,box-shadow .3s}
.to-top:hover{transform:translateY(-3px);box-shadow:0 18px 42px rgba(255,106,19,.35),inset 0 0 0 1px rgba(255,106,19,.6)}
.to-top svg{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg);pointer-events:none}
.to-top .trk{fill:none;stroke:rgba(var(--tint,247,243,236),.12);stroke-width:2.5}
.to-top .bar{fill:none;stroke:#FF8A1F;stroke-width:2.5;stroke-linecap:round;stroke-dasharray:138.2;stroke-dashoffset:138.2}
.to-top .arr{position:relative;width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;transition:transform .3s}
.to-top:hover .arr{transform:translateY(-2px)}
.to-top:focus-visible{outline:2px solid #FFC21F;outline-offset:3px}
:root[data-theme=light] .to-top{background:rgba(255,255,255,.82);box-shadow:0 14px 34px rgba(120,60,20,.2),inset 0 0 0 1px rgba(26,10,3,.12)}
@media print{.to-top{display:none}}

/* ---------- footer del campus ---------- */
.app-foot{position:relative;z-index:1;max-width:var(--max,1240px);margin:0 auto;padding:12px var(--gut,24px) calc(var(--bottom-h,0px) + 34px)}
.af-line{height:1.5px;background:linear-gradient(90deg,rgba(var(--tint,247,243,236),.5),rgba(var(--tint,247,243,236),.08))}
.af-row{display:flex;justify-content:space-between;align-items:center;gap:10px 24px;flex-wrap:wrap;padding-top:18px;font-family:var(--mono,ui-monospace,monospace);font-size:12.5px;letter-spacing:.04em;color:var(--t62,rgba(247,243,236,.62))}
.af-links{display:flex;gap:6px 22px;flex-wrap:wrap}
.af-links a{color:inherit;transition:color .25s}
.af-links a:hover{color:var(--orange-l,#FF9A4D)}
@media(max-width:560px){.af-row{flex-direction:column;align-items:flex-start}}

/* texto blanco en los botones naranja */
.btn,.toast-act,.chip[aria-pressed=true],.seg button[aria-pressed=true],.tab.on,.complete.is-done{text-shadow:0 1px 2px rgba(110,28,0,.38)}
.btn-ghost,.btn-google{text-shadow:none}