:root {
  color-scheme: light;
  --papel: #F7F4EF;
  --superficie: #FFFFFF;
  --tinta: #26221E;
  --tenue: #6F6A63;
  --linea: #DCD5C8;
  --acento: #8C5A2B;
  --acento-suave: #F0E6D8;
  --error: #A33A2E;
  --radio: 10px;
  --sombra: 0 1px 2px rgba(38, 34, 30, .06);
  --ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --serif: "Literata", Georgia, "Iowan Old Style", "Times New Roman", serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--papel);
  color: var(--tinta);
  font: 400 18px/1.65 var(--serif);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--acento); text-underline-offset: 2px; }

button, input {
  font: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--acento);
  outline-offset: 2px;
}

.top {
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px 24px 12px;
  border-bottom: 1px solid var(--linea);
}

.brand {
  font: 600 16px/1 var(--ui);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--tinta);
  text-decoration: none;
}

.tabs {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.tabs button {
  min-height: 40px;
  padding: 8px 14px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--tenue);
  font: 600 14px/1 var(--ui);
}

.tabs button[aria-selected="true"] {
  background: var(--acento-suave);
  color: var(--acento);
}

.account {
  font: 400 14px/1.3 var(--ui);
  color: var(--tenue);
  display: flex;
  align-items: center;
  gap: 10px;
}

.app {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 24px 96px;
}

.app:focus { outline: none; }

.hero {
  max-width: 62ch;
  margin: 0 0 36px;
}

.hero h1 {
  font-size: 2.1em;
  line-height: 1.12;
  letter-spacing: -.015em;
  margin: .1em 0 .3em;
}

.hero p {
  color: var(--tenue);
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  background: var(--superficie);
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  text-align: left;
  color: inherit;
}

button.card {
  width: 100%;
  font: inherit;
  cursor: pointer;
}

button.card:hover {
  border-color: var(--acento);
}

.card h2 {
  font-size: 1.12em;
  line-height: 1.25;
  margin: 0;
}

.card p {
  margin: 0;
  color: var(--tenue);
  font-size: .92em;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font: 500 12px/1 var(--ui);
  letter-spacing: .02em;
  color: var(--tenue);
  text-transform: uppercase;
}

.sello {
  display: inline-block;
  padding: 4px 7px;
  border-radius: 4px;
  background: var(--acento-suave);
  color: #7A4A1E;
  font: 600 11px/1 var(--ui);
}

.sello.gratis {
  background: #E6E9DC;
  color: #4C5A2E;
}

.empty {
  color: var(--tenue);
  font-style: italic;
}

.reader {
  max-width: 68ch;
  margin: 0 auto;
}

.reader-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  font: 500 13px/1 var(--ui);
  color: var(--tenue);
}

.reader-bar button {
  border: 1px solid var(--linea);
  background: var(--superficie);
  border-radius: 8px;
  min-height: 38px;
  padding: 8px 12px;
  color: var(--tinta);
}

.reader h1 {
  font-size: 2.2em;
  line-height: 1.15;
  letter-spacing: -.015em;
  margin: 0 0 .2em;
}

.reader h2 { font-size: 1.35em; margin: 1.8em 0 .4em; }
.reader h3 { font-size: 1.1em; margin: 1.5em 0 .3em; }
.reader p { margin: 0 0 1em; }
.reader ul, .reader ol { margin: 0 0 1em 1.2em; padding: 0; }
.reader li { margin: .25em 0; }
.reader blockquote {
  margin: 1.4em 0;
  padding: .2em 0 .2em 16px;
  border-left: 3px solid var(--linea);
  color: var(--tenue);
}
.reader code {
  font: 400 .88em/1.5 ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--acento-suave);
  padding: .12em .3em;
  border-radius: 4px;
}
.reader pre {
  background: #221F1B;
  color: #F5F0E8;
  padding: 14px;
  border-radius: 8px;
  overflow: auto;
}
.reader img { max-width: 100%; height: auto; border-radius: 6px; }
.reader hr { border: 0; border-top: 1px solid var(--linea); margin: 2em 0; }

.progress {
  height: 3px;
  background: var(--linea);
  border-radius: 2px;
  margin: 18px 0 26px;
  overflow: hidden;
}
.progress i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--acento);
  transition: width .2s linear;
}

.paywall {
  max-width: 58ch;
  margin: 40px auto;
  padding: 28px;
  background: var(--superficie);
  border: 1px solid var(--linea);
  border-radius: var(--radio);
}
.paywall h1 { margin-top: 0; }
.paywall p { color: var(--tenue); }
.paywall .row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.paywall .row a, .paywall .row button {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 9px 14px;
  border-radius: 8px;
  border: 1px solid var(--acento);
  background: var(--acento);
  color: #fff;
  text-decoration: none;
  font: 600 14px/1 var(--ui);
}
.paywall .row button {
  background: transparent;
  color: var(--acento);
}

.login {
  max-width: 44ch;
  margin: 40px auto;
  padding: 26px;
  background: var(--superficie);
  border: 1px solid var(--linea);
  border-radius: var(--radio);
}
.login h1 { margin-top: 0; font-size: 1.5em; }
.login p { color: var(--tenue); }
.login label { display: block; font: 600 13px/1.4 var(--ui); margin: 18px 0 6px; }
.login input {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--linea);
  border-radius: 8px;
  background: var(--papel);
  color: var(--tinta);
}
.login button {
  margin-top: 14px;
  min-height: 44px;
  width: 100%;
  border: 0;
  border-radius: 8px;
  background: var(--acento);
  color: #fff;
  font: 600 15px/1 var(--ui);
}

.note {
  font: 400 13px/1.5 var(--ui);
  color: var(--tenue);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  max-width: min(92vw, 460px);
  padding: 12px 16px;
  background: var(--tinta);
  color: var(--papel);
  border-radius: 8px;
  font: 400 14px/1.4 var(--ui);
  box-shadow: 0 6px 20px rgba(0,0,0,.18);
  z-index: 20;
}

.account button {
  border: 1px solid var(--linea);
  background: transparent;
  border-radius: 8px;
  min-height: 34px;
  padding: 6px 10px;
  color: var(--tinta);
  font: 600 13px/1 var(--ui);
}

@media (max-width: 620px) {
  body { font-size: 17px; }
  .top { flex-wrap: wrap; gap: 10px; padding: 14px 16px 10px; }
  .tabs { order: 3; width: 100%; margin-left: 0; }
  .account { margin-left: auto; }
  .app { padding: 22px 16px 80px; }
  .reader h1 { font-size: 1.8em; }
}

@media print {
  .top, .tabs, .account, .reader-bar, .progress, .toast { display: none !important; }
  body { background: #fff; color: #000; font-size: 12pt; }
  .app { padding: 0; max-width: none; }
}