/* santiago.work — site stylesheet
   One file, no framework. Bilingual content is toggled with html[data-lang]. */

:root {
  --bg: #f7f4ee;
  --bg-2: #efe9df;
  --ink: #1d1b18;
  --ink-2: #5a554c;
  --line: #d9d2c5;
  --accent: #b5471f;       /* burnt orange (echoes the old brainandlearning.css) */
  --accent-ink: #ffffff;
  --card: #ffffff;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --max: 1080px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171513; --bg-2: #211e1b; --ink: #ece7de; --ink-2: #a9a194;
    --line: #363129; --accent: #e8794a; --accent-ink: #171513; --card: #1f1c19;
  }
}

/* language switch ------------------------------------------------------- */
html[data-lang="es"] [lang="en"] { display: none !important; }
html[data-lang="en"] [lang="es"] { display: none !important; }

/* base ------------------------------------------------------------------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--sans); font-size: 17px; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.1; margin: 0 0 .5em; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.35rem; }
h4 { margin: 0 0 .25em; font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-2); }
main > section, .foot { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
small { color: var(--ink-2); font-weight: 400; }

/* header ----------------------------------------------------------------- */
.top {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 24px;
  max-width: var(--max); margin: 0 auto; padding: 14px 20px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
}
.brand { font-family: var(--serif); font-weight: 600; font-size: 1.3rem; color: var(--ink); }
.nav { display: flex; gap: 18px; flex-wrap: wrap; margin-left: auto; }
.nav a { color: var(--ink-2); font-weight: 500; font-size: .95rem; }
.nav a:hover { color: var(--ink); text-decoration: none; }
.lang {
  border: 1px solid var(--line); background: transparent; color: var(--ink);
  font: 600 .8rem var(--sans); letter-spacing: .06em; padding: 6px 10px; border-radius: 999px; cursor: pointer;
}
.lang:hover { border-color: var(--accent); color: var(--accent); }

/* hero ------------------------------------------------------------------- */
.hero {
  display: grid; grid-template-columns: 220px 1fr; gap: 40px; align-items: center;
  padding-top: 48px !important; padding-bottom: 56px !important;
}
.portrait { width: 220px; height: auto; border-radius: 50%; border: 6px solid var(--card); box-shadow: 0 10px 30px rgba(0,0,0,.12); }
.eyebrow { margin: 0 0 .6em; font-size: .85rem; text-transform: uppercase; letter-spacing: .1em; color: var(--accent); font-weight: 600; }
.lede { font-size: 1.15rem; max-width: 60ch; margin: .6em 0; }
.tagline { color: var(--ink-2); font-family: var(--serif); font-style: italic; max-width: 60ch; margin: 0; }

/* site cards ------------------------------------------------------------- */
.sites { padding-bottom: 56px !important; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
.card {
  display: block; background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 22px 22px 18px; color: var(--ink); transition: transform .15s, border-color .15s, box-shadow .15s;
}
.card:hover { text-decoration: none; transform: translateY(-2px); border-color: var(--accent); box-shadow: 0 10px 24px rgba(0,0,0,.08); }
.card-k { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .8rem; color: var(--accent); }
.card h3 { margin: .3em 0 .35em; }
.card p { margin: 0; color: var(--ink-2); font-size: .95rem; }

/* two-column lists -------------------------------------------------------- */
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; padding-bottom: 56px !important; }
.links { list-style: none; margin: 0; padding: 0; }
.links li { padding: 10px 0; border-top: 1px solid var(--line); }
.links li:last-child { border-bottom: 1px solid var(--line); }
.links a { color: var(--ink); font-weight: 500; }
.links a:hover { color: var(--accent); }

/* contact ----------------------------------------------------------------- */
.contact { background: var(--bg-2); border-radius: 18px; padding: 36px 32px !important; margin-bottom: 40px !important; }
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 24px; margin-top: 12px; }
.contact p { margin: 0; }
.at { color: var(--ink-2); font-size: .85em; }

/* footer ------------------------------------------------------------------ */
.foot { padding: 20px; color: var(--ink-2); font-size: .85rem; text-align: center; }

/* responsive -------------------------------------------------------------- */
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; gap: 20px; text-align: left; }
  .portrait { width: 150px; }
  .two { grid-template-columns: 1fr; gap: 24px; }
  .nav { display: none; }   /* on phones the cards are the navigation */
}