:root {
  --bg: #F4F2ED;
  --bg-luz: rgba(255, 255, 255, .85);
  --surface: #FFFFFF;
  --ink: #16181D;
  --ink-2: #4B5060;
  --ink-3: #636878;
  --line: rgba(22, 24, 29, .09);
  --line-2: rgba(22, 24, 29, .18);
  --boton: #16181D;
  --boton-ink: #FFFFFF;
  --sombra: 0 1px 2px rgba(22, 24, 29, .04), 0 10px 28px -14px rgba(22, 24, 29, .16);
  --sombra-alta: 0 2px 4px rgba(22, 24, 29, .05), 0 22px 44px -18px rgba(22, 24, 29, .26);
  --demo-1: #2F4A8C;
  --demo-1-ink: #2F4A8C;
  --demo-1-tint: rgba(47, 74, 140, .08);
  --demo-2: #356C82;
  --demo-2-ink: #356C82;
  --demo-2-tint: rgba(53, 108, 130, .09);
  --demo-3: #0369A1;
  --demo-3-ink: #0369A1;
  --demo-3-tint: rgba(3, 105, 161, .08);
  --display: "Instrument Serif", Georgia, "Times New Roman", serif;
  --texto: "Nunito Sans", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --gutter: 16px;
  --ancho: calc(620px + 2 * var(--gutter));
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0E1014;
    --bg-luz: rgba(255, 255, 255, .045);
    --surface: #161920;
    --ink: #ECEEF3;
    --ink-2: #B3B8C5;
    --ink-3: #8F95A3;
    --line: rgba(255, 255, 255, .09);
    --line-2: rgba(255, 255, 255, .2);
    --boton: #ECEEF3;
    --boton-ink: #0E1014;
    --sombra: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 30px -16px rgba(0, 0, 0, .6);
    --sombra-alta: 0 2px 4px rgba(0, 0, 0, .35), 0 24px 48px -18px rgba(0, 0, 0, .75);
    --demo-1-ink: #9DB2EE;
    --demo-1-tint: rgba(110, 140, 220, .12);
    --demo-2-ink: #86C1D6;
    --demo-2-tint: rgba(100, 170, 196, .12);
    --demo-3-ink: #6CC4F0;
    --demo-3-tint: rgba(70, 170, 230, .12);
  }
}
:root[data-theme="dark"] {
  --bg: #0E1014;
  --bg-luz: rgba(255, 255, 255, .045);
  --surface: #161920;
  --ink: #ECEEF3;
  --ink-2: #B3B8C5;
  --ink-3: #8F95A3;
  --line: rgba(255, 255, 255, .09);
  --line-2: rgba(255, 255, 255, .2);
  --boton: #ECEEF3;
  --boton-ink: #0E1014;
  --sombra: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 30px -16px rgba(0, 0, 0, .6);
  --sombra-alta: 0 2px 4px rgba(0, 0, 0, .35), 0 24px 48px -18px rgba(0, 0, 0, .75);
  --demo-1-ink: #9DB2EE;
  --demo-1-tint: rgba(110, 140, 220, .12);
  --demo-2-ink: #86C1D6;
  --demo-2-tint: rgba(100, 170, 196, .12);
  --demo-3-ink: #6CC4F0;
  --demo-3-tint: rgba(70, 170, 230, .12);
}
@media (min-width: 600px) { :root { --gutter: 28px; } }
@media (min-width: 900px) { :root { --ancho: 1240px; } }
@media (min-width: 1200px) { :root { --gutter: 40px; } }

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background: radial-gradient(1100px 520px at 50% -12%, var(--bg-luz), transparent 70%), var(--bg);
  color: var(--ink);
  font-family: var(--texto);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
button, input { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--ink) 35%, transparent); outline-offset: 3px; }

.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; font-size: 17px; letter-spacing: -.01em; }
.sello { display: inline-grid; grid-template-columns: repeat(3, 9px); gap: 3px; }
.sello i { width: 9px; height: 9px; border-radius: 3px; background: var(--demo-1); }
.sello i:nth-child(2) { background: var(--demo-2); }
.sello i:nth-child(3) { background: var(--demo-3); }

.vista-entrada {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 20px;
  padding: 32px var(--gutter);
}
.tarjeta-entrada {
  width: 100%;
  max-width: 420px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--sombra);
  padding: 28px 24px 26px;
  display: grid;
  gap: 6px;
  animation: subir .6s cubic-bezier(.2, .7, .2, 1) both;
}
@media (min-width: 600px) { .tarjeta-entrada { padding: 36px 36px 32px; } }
.tarjeta-entrada .sello { justify-self: start; }
.tarjeta-entrada h1 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(40px, 10vw, 52px);
  line-height: 1.05;
  letter-spacing: -.005em;
  margin: 16px 0 14px;
}
.tarjeta-entrada label { font-size: 13px; font-weight: 600; color: var(--ink-2); margin-top: 8px; }
.tarjeta-entrada input {
  height: 48px;
  border-radius: 12px;
  border: 1px solid var(--line-2);
  background: transparent;
  padding: 0 14px;
  font-size: 16px;
  transition: border-color .2s, box-shadow .2s;
}
.tarjeta-entrada input:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 4px color-mix(in srgb, var(--ink) 10%, transparent); }
.tarjeta-entrada button {
  margin-top: 20px;
  height: 50px;
  border: 0;
  border-radius: 12px;
  background: var(--boton);
  color: var(--boton-ink);
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: transform .15s, opacity .2s;
}
.tarjeta-entrada button:hover { opacity: .92; }
.tarjeta-entrada button:active { transform: scale(.985); }

.barra {
  max-width: var(--ancho);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.salir {
  min-height: 44px;
  padding: 0 14px;
  margin-right: -14px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--ink-2);
  font-size: 15px;
  cursor: pointer;
}
.salir:hover { color: var(--ink); background: var(--line); }

.contenido { max-width: var(--ancho); margin: 0 auto; padding: 24px var(--gutter) 56px; }
.contenido h1 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(40px, 7.2vw, 68px);
  line-height: 1.04;
  letter-spacing: -.01em;
  margin: 0;
  outline: none;
}

.demos {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin: 32px 0 0;
}
@media (min-width: 900px) {
  .demos { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; margin-top: 44px; }
}
.demo {
  --c: var(--demo-1);
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--sombra);
  transition: transform .3s cubic-bezier(.2, .7, .2, 1), box-shadow .3s;
  animation: subir .65s cubic-bezier(.2, .7, .2, 1) both;
  animation-delay: calc(var(--i, 0) * 90ms + 60ms);
}
.demo:hover { transform: translateY(-4px); box-shadow: var(--sombra-alta); }
.demo:focus-within { box-shadow: var(--sombra-alta); }

.ilustracion {
  height: 136px;
  display: grid;
  place-items: center;
  background: var(--c-tint);
  color: var(--c-ink);
}
@media (min-width: 900px) { .ilustracion { height: 150px; } }
.ilustracion svg {
  width: min(78%, 250px);
  height: auto;
  stroke: currentColor;
  stroke-width: 1.8;
  transition: transform .45s cubic-bezier(.2, .7, .2, 1);
}
.demo:hover .ilustracion svg { transform: translateY(-3px); }
.suelo { stroke-width: 1.2; opacity: .35; }
.relleno { fill: currentColor; stroke: none; }
.ruta { stroke-width: 2.4; stroke-dasharray: .5 7; }
.peldanos { opacity: .5; stroke-width: 1.5; }

.trazo { stroke-dasharray: var(--len, 0); stroke-dashoffset: var(--len, 0); }
.dibujada .trazo { stroke-dashoffset: 0; transition: stroke-dashoffset 1.25s cubic-bezier(.65, 0, .35, 1) var(--d, 0ms); }
.detalle { opacity: 0; transition: opacity .6s ease .95s; }
.dibujada .detalle { opacity: 1; }

.cuerpo { display: flex; flex-direction: column; flex: 1; padding: 22px 22px 22px; }
@media (min-width: 600px) { .cuerpo { padding: 26px 26px 24px; } }
.marca { display: flex; align-items: center; gap: 12px; }
.insignia {
  width: 36px;
  height: 36px;
  flex: none;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--c);
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  line-height: 1;
}
.marca h2 { margin: 0; font-size: 22px; font-weight: 600; letter-spacing: -.015em; }
.tipo { margin: 10px 0 24px; color: var(--c-ink); font-weight: 600; font-size: 15px; letter-spacing: .005em; }
.entrar {
  margin-top: auto;
  text-decoration: none;
  min-height: 50px;
  padding: 0 18px;
  border: 0;
  border-radius: 12px;
  background: var(--c);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}
.entrar::after { content: ""; position: absolute; inset: 0; border-radius: 24px; }
.entrar svg { width: 18px; height: 18px; transition: transform .3s cubic-bezier(.2, .7, .2, 1); }
.demo:hover .entrar svg { transform: translateX(4px); }


.error {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-radius: 10px;
  background: color-mix(in srgb, #C2410C 10%, transparent);
  color: #C2410C;
  font-size: 14px;
  font-weight: 600;
}
.salir { text-decoration: none; display: inline-flex; align-items: center; }


@keyframes subir { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .trazo { stroke-dasharray: none !important; stroke-dashoffset: 0 !important; }
  .detalle { opacity: 1 !important; }
}