/* ===============================
   Світла тема (узгоджено зі сторінками сайту)
   =============================== */
:root{
  --bg: #f5f9ff;
  --panel: #ffffff;
  --ink: #0f172a;
  --ink-2: #334155;
  --muted: #64748b;
  --line: #e5e7eb;
  --brand: #0284c7;   /* primary */
  --brand-2:#0ea5e9; /* accent */
  --ring: rgba(14,165,233,.28);
  --radius-lg: 16px;
  --radius-md: 12px;
  --shadow-1: 0 8px 25px rgba(2,8,23,.05);
  --shadow-2: 0 14px 40px rgba(2,8,23,.08);
}
html[data-theme="dark"]{
  --bg: #0b1220;
  --panel: #0f172a;
  --ink: #e5e7eb;
  --ink-2:#cbd5e1;
  --muted:#94a3b8;
  --line:#1f2937;
  --brand:#38bdf8;
  --brand-2:#60a5fa;
  --ring: rgba(96,165,250,.25);
  --shadow-1:none; --shadow-2:none;
}

/* ===============================
   База
   =============================== */
*,
*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0; color:var(--ink);
  background: linear-gradient(180deg, rgba(255,255,255,.9), rgba(255,255,255,.9)), var(--bg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans";
  line-height: 1.65;
}
.wrap{ max-width: 1200px; margin: 0 auto; padding: 0 20px; }
a{ color: var(--brand); text-decoration: none; }
:focus-visible{ outline: 2px solid var(--brand); outline-offset: 2px; }

/* ===============================
   Карти/секції
   =============================== */
.card{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  padding: 18px 16px;
  margin: 16px 0;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover{ transform: translateY(-2px); box-shadow: var(--shadow-2); border-color: color-mix(in srgb, var(--brand) 28%, var(--line)); }
.card.hero{ text-align: center; }
.card-head{ text-align: center; margin-bottom: 8px; }
.card-head h2{ margin: 0; }
.muted{ color: var(--muted); }

/* Списки */
.list-dot{ margin: 6px 0 10px 1.2rem; padding: 0; }
.list-dot li{ margin: .3rem 0; list-style: "•  "; }

/* Заголовки */
h1{ margin:.2rem 0 .4rem; font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.3rem); font-weight: 900; }
h2{ margin:.2rem 0 .6rem; font-size: clamp(1.2rem, 1rem + 1vw, 1.7rem); font-weight: 800; }

/* ===============================
   Блоки коду (з кнопкою Копіювати)
   =============================== */
pre.code{
  position: relative;
  background: #0b1220;        /* темне тло для коду у світлій темі */
  color: #e5e7eb;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  overflow: auto;
  line-height: 1.55;
  box-shadow: 0 6px 16px rgba(2,8,23,.08);
}
html[data-theme="dark"] pre.code{
  background: #111827;
  color: #e5e7eb;
  border-color: #1f2937;
}
pre.code code{ font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; white-space: pre; }

/* Кнопка копіювання */
.copy-btn{
  position: absolute; top: 8px; right: 8px;
  height: 32px; padding: 0 12px;
  border-radius: 10px; border: 1px solid var(--brand);
  background: #fff; color: var(--brand); font-weight: 800;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.copy-btn:hover{
  background: var(--brand);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px var(--ring);
}
html[data-theme="dark"] .copy-btn{ background:#0f172a; color:#e5e7eb; border-color:#334155; }

/* Вбудовані <code> у тексті */
code{
  background: rgba(14,165,233,.12);
  color: var(--brand);
  border: 1px solid rgba(14,165,233,.28);
  border-radius: 6px;
  padding: .05rem .35rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

/* ===============================
   Reveal-анімація
   =============================== */
.reveal{
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .5s ease, transform .5s ease;
  will-change: opacity, transform;
}
.reveal.is-visible{ opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce){
  .reveal{ opacity:1 !important; transform:none !important; transition:none !important; }
}

/* ===============================
   Футер
   =============================== */
.site-footer{
  margin-top: 28px;
  padding: 20px;
  text-align: center;
  color: var(--muted);
  border-top: 1px solid var(--line);
}
.site-footer .banner{ margin: 12px auto 0; max-width: 320px; border-radius: 8px; }