/* Сайт designer.hager-service.com.ua — спільні стилі лендингу та інструкції */
:root {
  --blue: #0078c3;
  --blue-dark: #00609c;
  --navy: #00477e;
  --navy-dark: #002841;
  --berry: #910049;
  --text: #2f3640;
  --muted: #66707c;
  --bg: #ffffff;
  --bg-soft: #f4f7fa;
  --tint: #e8f2fa;
  --border: #e1e6eb;
  --card: #ffffff;
  --shadow: 0 1px 2px rgba(0, 40, 65, .06), 0 8px 24px rgba(0, 40, 65, .08);
  --radius: 14px;
  --wrap: 1120px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --text: #e3e8ee;
    --muted: #9aa6b2;
    --bg: #0d1620;
    --bg-soft: #121e2a;
    --tint: #10304a;
    --border: #233344;
    --card: #152230;
    --navy: #8cc8f0;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .3);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 16px/1.6 "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); }
a:hover { color: var(--blue-dark); }
h1, h2, h3 { color: var(--navy); line-height: 1.2; margin: 0 0 .5em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }
section { padding: 72px 0; }
section.soft { background: var(--bg-soft); }
.section-head { max-width: 720px; margin-bottom: 36px; }
.section-head p { color: var(--muted); font-size: 1.05rem; }

/* Шапка */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.topbar .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--navy); font-weight: 700; }
.brand img { width: 32px; height: 32px; border-radius: 7px; }
.brand span small { display: block; font-weight: 400; font-size: .75rem; color: var(--muted); line-height: 1; }
.nav { display: flex; gap: 20px; margin-left: auto; align-items: center; }
.nav a { color: var(--text); text-decoration: none; font-size: .95rem; }
.nav a:hover { color: var(--blue); }
.nav .btn { color: #fff; }
.menu-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; color: var(--text); font-size: 1rem; }

/* Кнопки */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 12px 22px; border-radius: 10px; font-weight: 600; text-decoration: none;
  background: var(--blue); color: #fff; border: 2px solid var(--blue);
  transition: background .15s, transform .1s;
}
.btn:hover { background: var(--blue-dark); border-color: var(--blue-dark); color: #fff; }
.btn:active { transform: scale(.98); }
.btn.big { padding: 16px 28px; font-size: 1.08rem; }
.btn.small { padding: 8px 14px; font-size: .9rem; }
.btn.ghost { background: transparent; color: var(--blue); }
.btn.ghost:hover { background: var(--tint); color: var(--blue); }
.btn.berry { background: var(--berry); border-color: var(--berry); }
.btn.berry:hover { background: #74003a; border-color: #74003a; }
.btn svg { width: 20px; height: 20px; flex: none; }

/* Перший екран */
.hero { padding: 64px 0 56px; background: linear-gradient(180deg, var(--tint), var(--bg)); }
.hero .wrap { display: grid; grid-template-columns: 1fr 1.25fr; gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(2rem, 4.4vw, 3.1rem); margin-bottom: .35em; }
.hero .lead { font-size: 1.15rem; color: var(--muted); margin-bottom: 1.4em; }
.badge { display: inline-block; font-size: .8rem; font-weight: 600; letter-spacing: .03em; color: var(--blue); background: var(--tint); border: 1px solid color-mix(in srgb, var(--blue) 25%, transparent); padding: 4px 12px; border-radius: 99px; margin-bottom: 18px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 14px; }
.meta { font-size: .9rem; color: var(--muted); }
.meta b { color: var(--text); }
.shot { border-radius: 10px; overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); background: #fff; }
.hero .shot { transform: perspective(1600px) rotateY(-4deg); }

/* Можливості */
.grid { display: grid; gap: 20px; }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
.grid.c2 { grid-template-columns: repeat(2, 1fr); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.card .ico { width: 44px; height: 44px; border-radius: 10px; background: var(--tint); color: var(--blue); display: grid; place-items: center; margin-bottom: 14px; }
.card .ico svg { width: 24px; height: 24px; }
.card p { color: var(--muted); margin: 0; font-size: .97rem; }

/* Галерея */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-bottom: 72px; }
.feature:last-child { margin-bottom: 0; }
.feature.flip .text { order: 2; }
.feature ul { padding-left: 1.2em; margin: 0; color: var(--muted); }
.feature li { margin-bottom: .35em; }
.feature .shot.tall { max-width: 460px; margin: 0 auto; }

/* Кроки */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.steps .card { position: relative; padding-top: 52px; }
.steps .card::before { counter-increment: step; content: counter(step); position: absolute; top: 18px; left: 24px; width: 26px; height: 26px; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 700; font-size: .9rem; display: grid; place-items: center; }

/* Завантаження */
.download { background: linear-gradient(135deg, var(--navy-dark), #003a66); color: #dce8f2; }
.download h2 { color: #fff; }
.download .wrap { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: start; }
.download .meta { color: #a9bccd; }
.download .meta b { color: #fff; }
.download ul { padding-left: 1.2em; }
.notes { background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .14); border-radius: var(--radius); padding: 22px 24px; max-height: 360px; overflow: auto; font-size: .93rem; }
.notes h3 { color: #fff; }
.notes ul { margin: 0; padding-left: 1.1em; }
.notes li { margin-bottom: .45em; }

/* Підтримка */
.donate .wrap { display: grid; grid-template-columns: auto 1fr auto; gap: 32px; align-items: center; }
.heart { width: 64px; height: 64px; border-radius: 50%; background: color-mix(in srgb, var(--berry) 12%, transparent); color: var(--berry); display: grid; place-items: center; }
.heart svg { width: 32px; height: 32px; }

/* Питання */
details { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 0 20px; margin-bottom: 10px; }
summary { cursor: pointer; padding: 16px 0; font-weight: 600; color: var(--navy); list-style: none; position: relative; padding-right: 28px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 12px; font-size: 1.4rem; color: var(--blue); }
details[open] summary::after { content: "–"; }
details > div { padding-bottom: 16px; color: var(--muted); }

/* Попередження про бета-версію */
.beta {
  margin: 18px 0 0; padding: 12px 16px 12px 44px; position: relative;
  font-size: .92rem; line-height: 1.5; color: var(--text);
  background: color-mix(in srgb, #f5a400 12%, var(--bg));
  border: 1px solid color-mix(in srgb, #f5a400 45%, transparent); border-radius: 10px;
}
.beta::before { content: "!"; position: absolute; left: 14px; top: 12px; width: 20px; height: 20px; border-radius: 50%;
  background: #e09400; color: #fff; font-weight: 700; font-size: .8rem; display: grid; place-items: center; }
.beta b { color: var(--text); }

/* Застереження */
.notice { border-left: 4px solid var(--berry); background: color-mix(in srgb, var(--berry) 6%, var(--bg)); padding: 16px 20px; border-radius: 0 10px 10px 0; font-size: .95rem; }

/* Підвал */
footer { border-top: 1px solid var(--border); padding: 36px 0; font-size: .9rem; color: var(--muted); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 40px; justify-content: space-between; }
footer a { color: var(--muted); }

/* Інструкція */
.doc { display: grid; grid-template-columns: 240px 1fr; gap: 48px; padding: 40px 20px 72px; }
.toc { position: sticky; top: 88px; align-self: start; font-size: .93rem; max-height: calc(100vh - 110px); overflow: auto; }
.toc strong { display: block; color: var(--navy); margin-bottom: 8px; }
.toc ol { padding-left: 1.2em; margin: 0; }
.toc li { margin-bottom: 6px; }
.toc a { color: var(--text); text-decoration: none; }
.toc a:hover { color: var(--blue); }
.article { min-width: 0; }
.article h1 { font-size: clamp(1.8rem, 3.5vw, 2.4rem); }
.article h2 { font-size: 1.5rem; margin-top: 2.2em; padding-top: 12px; scroll-margin-top: 80px; }
.article h3 { margin-top: 1.5em; }
.article ol, .article ul { padding-left: 1.4em; }
.article li { margin-bottom: .4em; }
.article .shot { margin: 20px 0 8px; }
.article figure { margin: 0 0 24px; }
.article figcaption { font-size: .85rem; color: var(--muted); }
.tip { background: var(--tint); border-radius: 10px; padding: 14px 18px; margin: 16px 0; font-size: .95rem; }
.tip b:first-child { color: var(--blue); }
kbd { font: .85em/1 ui-monospace, Consolas, monospace; background: var(--bg-soft); border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 5px; padding: 2px 6px; }
table { border-collapse: collapse; width: 100%; font-size: .95rem; margin: 12px 0 20px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--navy); background: var(--bg-soft); }
.table-scroll { overflow-x: auto; }

/* Адаптивність */
@media (max-width: 960px) {
  .hero .wrap, .feature, .download .wrap, .doc { grid-template-columns: 1fr; }
  .hero .shot { transform: none; }
  .feature.flip .text { order: 0; }
  .grid.c3, .steps { grid-template-columns: repeat(2, 1fr); }
  .donate .wrap { grid-template-columns: 1fr; text-align: center; justify-items: center; }
  .toc { position: static; max-height: none; border: 1px solid var(--border); border-radius: 12px; padding: 16px 20px; }
}
@media (max-width: 720px) {
  section { padding: 52px 0; }
  .grid.c3, .grid.c2, .steps { grid-template-columns: 1fr; }
  .menu-toggle { display: block; }
  .nav { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--bg); border-bottom: 1px solid var(--border); padding: 8px 20px 16px; }
  .nav.open { display: flex; }
  .nav a { padding: 10px 0; }
  .wrap { padding: 0 16px; }
}

/* Історія версій */
.changelog { max-width: 820px; padding-top: 40px; padding-bottom: 72px; }
.changelog h1 { font-size: clamp(1.8rem, 3.5vw, 2.4rem); }
.release { padding: 28px 0 8px; border-bottom: 1px solid var(--border); }
.release h2 { font-size: 1.35rem; margin-bottom: .1em; display: flex; align-items: center; gap: 12px; }
.release h2 .badge { margin: 0; }
.release ul { padding-left: 1.3em; }
.release li { margin-bottom: .4em; }
.changelog > p:last-child { margin-top: 32px; }