/* yuritiutvin.github.io — plain CSS, no build step.
   Palette matches portfolio-standards.md: accent #1F3A5F, grey #6E6E6E,
   rule #D8D8D8, stripe #F4F6F9. */

:root {
  --accent: #1F3A5F;
  --grey: #6E6E6E;
  --rule: #D8D8D8;
  --stripe: #F4F6F9;
  --text: #17181A;
  --bg: #FFFFFF;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #9FC0E8;
    --grey: #9A9A9A;
    --rule: #33373D;
    --stripe: #1A1D21;
    --text: #E8E9EB;
    --bg: #101214;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 1.25rem 4rem;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.masthead, main, footer { max-width: 860px; margin: 0 auto; }

/* ---------- masthead ---------- */

.masthead { padding: 3.5rem 0 1.75rem; border-bottom: 2px solid var(--accent); }

.masthead h1 {
  margin: 0;
  font-size: 2.1rem;
  letter-spacing: -0.01em;
  color: var(--accent);
}

.focus { margin: 0.7rem 0 0; font-size: 1.08rem; max-width: 42rem; }

.about { margin: 0.55rem 0 0; color: var(--grey); font-size: 0.98rem; max-width: 42rem; }

.links { margin: 0.9rem 0 0; font-size: 0.95rem; }
.links a { margin-right: 1.1rem; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- theme sections ---------- */

.theme { margin-top: 2.75rem; }

.theme h2 {
  margin: 0 0 1.25rem;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--grey);
}

/* ---------- project card ---------- */

.card {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 1.5rem;
  align-items: start;
  padding: 1.25rem;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: var(--bg);
  margin-bottom: 1.5rem;
}

.card + .card { margin-top: 0; }

.thumb { display: block; }

.thumb img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
  border: 1px solid var(--rule);
}

.card h3 { margin: 0 0 0.45rem; font-size: 1.22rem; }
.card h3 a { color: var(--text); }
.card h3 a:hover { color: var(--accent); }

.summary { margin: 0 0 0.7rem; }

.result {
  margin: 0 0 0.9rem;
  padding: 0.5rem 0.7rem;
  background: var(--stripe);
  border-left: 3px solid var(--accent);
  border-radius: 3px;
  font-size: 0.93rem;
}

.tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 1rem;
  padding: 0;
}

.tags li {
  font-size: 0.79rem;
  color: var(--grey);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
}

.actions { margin: 0; }

.btn {
  display: inline-block;
  margin-right: 0.5rem;
  padding: 0.38rem 0.85rem;
  border-radius: 6px;
  background: var(--accent);
  color: var(--bg);
  font-size: 0.88rem;
}

.btn:hover { text-decoration: none; opacity: 0.9; }

.btn.ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

/* ---------- footer ---------- */

footer {
  margin-top: 3.5rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--rule);
  color: var(--grey);
  font-size: 0.85rem;
}

/* ---------- narrow screens ---------- */

@media (max-width: 680px) {
  .card { grid-template-columns: 1fr; gap: 1rem; }
  .masthead { padding-top: 2.5rem; }
  .masthead h1 { font-size: 1.7rem; }
}