/* Reader Friendly téma: ugyanaz a papír, tinta és zöld, mint a Facebook-borítón és a reader.ketszeri.hu oldalakon. */
:root {
  --rf-paper: #f3efe6;
  --rf-card: #faf7f0;
  --rf-ink: #1c1915;
  --rf-muted: #5e574e;
  --rf-rule: #d9d0c3;
  --rf-green: #1d6b4f;
  --rf-red: #a33a2b;
  --rf-amber: #a8701a;
  --rf-serif: "Iowan Old Style", Palatino, "Palatino Linotype", "Book Antiqua", Georgia, "Liberation Serif", serif;
  --rf-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  --body-background-color: var(--rf-paper);
  --body-text-color: var(--rf-ink);
  --card-background-color: var(--rf-card);
  --nav-background-color: var(--rf-paper);
  --nav-border-bottom-color: var(--rf-rule);
  --nav-current-border-bottom-color: var(--rf-green);
  --card-border-color: var(--rf-rule);
  --down-border-left-color: var(--rf-red);
  --down-background-color: #f4e1dc;
  --degraded-border-left-color: var(--rf-amber);
  --up-border-left-color: var(--rf-green);
  --tag-color: #ffffff;
  --tag-up-background-color: var(--rf-green);
  --tag-down-background-color: var(--rf-red);
  --tag-degraded-background-color: var(--rf-amber);
  --change-background-color: var(--rf-amber);
  --error-button-border-color: var(--rf-green);
  --error-button-background-color: var(--rf-green);
  --error-button-color: #ffffff;
  --submit-button-border-color: var(--rf-green);
  --submit-button-background-color: var(--rf-green);
  --submit-button-color: #ffffff;
  --graph-opacity: 0.55;
  --graph-filter: hue-rotate(-18deg) saturate(0.55);
}

@media (prefers-color-scheme: dark) {
  :root {
    --rf-paper: #141311;
    --rf-card: #1c1a17;
    --rf-ink: #f3efe6;
    --rf-muted: #b7aea2;
    --rf-rule: #3a342c;
    --rf-green: #8fceb0;
    --rf-red: #e08a7c;
    --rf-amber: #e0b56a;
    --down-background-color: #2c1b17;
    --tag-color: #141311;
    --error-button-color: #141311;
    --submit-button-color: #141311;
    --graph-opacity: 0.4;
  }
}

html, body { background: var(--rf-paper); color: var(--rf-ink); }
body { font-family: var(--rf-serif); line-height: 1.45; -webkit-font-smoothing: antialiased; }
a { color: var(--rf-green); }

/* Fejléc: a borító felirata, ritkított nagybetűkkel. */
nav { box-shadow: none !important; }
nav a, nav li { font-family: var(--rf-sans); font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--rf-muted); }
nav a[aria-current] { color: var(--rf-ink); }
nav .logo { font-family: var(--rf-serif); font-size: 1rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--rf-ink); font-weight: 400; }
nav .logo img { border-radius: 22%; border: 0; box-shadow: none; background: transparent; }

/* Bevezető: középre zárt cím, alatta vékony vonal, mint a borítón. */
header h1 { font-family: var(--rf-serif); font-weight: 400; font-size: 2.1rem; line-height: 1.15; letter-spacing: -0.005em; }
header h1::after { content: ""; display: block; width: 4.5rem; height: 1px; background: var(--rf-rule); margin: 1.1rem 0 0; }
header .lead { font-family: var(--rf-serif); font-size: 1.1rem; color: var(--rf-ink); }
h2, h3, h4 { font-family: var(--rf-serif); font-weight: 500; }

/* Kártyák: papír, vékony keret, árnyék nélkül. */
article { border-radius: 6px !important; box-shadow: none !important; font-family: var(--rf-serif); }
article .data, form, form a, form button { font-family: var(--rf-sans); }
article .data { color: var(--rf-muted); }

footer, footer p { font-family: var(--rf-sans); font-size: 0.82rem; color: var(--rf-muted); }

/* Válaszidő-grafikon: a grafikon alakja marad, de a Reader Friendly zöldjével, halványan. */
article.graph { background-image: none !important; position: relative; }
article.graph::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--rf-green);
  opacity: 0.22;
  -webkit-mask: var(--background) right center / contain no-repeat;
  mask: var(--background) right center / contain no-repeat;
  pointer-events: none;
}
article.graph > * { position: relative; }