/* Gastario — hoja de estilos compartida. Estática, sin frameworks, sin JS. */

:root {
  --color-bg: #f7f8fa;
  --color-surface: #ffffff;
  --color-text: #1c2333;
  --color-text-muted: #545b6b;
  --color-border: #e2e5eb;
  --color-primary: #1f6f5c;
  --color-primary-dark: #175545;
  --color-accent-bg: #eaf4f1;
  --max-width: 760px;
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #12151c;
    --color-surface: #1a1e27;
    --color-text: #eef0f4;
    --color-text-muted: #a7adba;
    --color-border: #2b3040;
    --color-primary: #4fb89b;
    --color-primary-dark: #6fcdb2;
    --color-accent-bg: #17362f;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

a {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

a:hover,
a:focus {
  color: var(--color-primary);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 0.5em 1em;
  z-index: 10;
}

.skip-link:focus {
  left: 0.5em;
  top: 0.5em;
}

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
  text-decoration: none;
}

.brand__mark {
  color: var(--color-primary-dark);
}

.brand__tagline {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
}

h1 {
  font-size: 1.7rem;
  line-height: 1.3;
  margin: 0 0 0.5rem;
}

h2 {
  font-size: 1.2rem;
  margin: 2rem 0 0.6rem;
  color: var(--color-text);
}

p, li {
  color: var(--color-text-muted);
}

.updated {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin: 0 0 2rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.card--accent {
  background: var(--color-accent-bg);
  border-color: transparent;
}

.button {
  display: inline-block;
  background: var(--color-primary);
  color: #ffffff;
  text-decoration: none;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  margin-top: 0.5rem;
}

.button:hover,
.button:focus {
  background: var(--color-primary-dark);
  color: #ffffff;
}

.link-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.link-list a {
  display: block;
  padding: 1rem 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
}

.link-list a:hover,
.link-list a:focus {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.placeholder {
  background: #fff3cd;
  color: #6b5300;
  padding: 0.1em 0.4em;
  border-radius: 4px;
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.9em;
}

@media (prefers-color-scheme: dark) {
  .placeholder {
    background: #4a3c00;
    color: #ffe28a;
  }
}

.site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.5rem 3rem;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

@media (max-width: 480px) {
  main {
    padding: 1.5rem 1.25rem 2.5rem;
  }

  h1 {
    font-size: 1.4rem;
  }
}