:root {
  /* Official Onfine brand palette (onfine.cz) */
  --purple: #7817ff;        /* fialová */
  --purple-600: #6012cc;    /* fialová 500 */
  --purple-deep: #480e99;   /* fialová 400 */
  --purple-900: #300966;    /* fialová 900 */
  --mint: #b6ffc5;          /* mintová */
  --beige: #f9ece0;         /* béžová */
  --beige-50: #fefdfc;      /* béžová 50 */
  --beige-500: #e0d4ca;     /* béžová 500 */
  --blue: #1f6fff;

  /* soft tints derived from the brand colors */
  --pink: #e6d8ff;          /* light lavender — hover accents */
  --lavender-bg: #f1e9ff;
  --green: #5ec045;

  --ink: #0c0c0c;
  --slate: #475467;
  --muted: #94979e;
  --surface: #ffffff;
  --line: #e8ddd2;

  /* signature gradient used across onfine.cz */
  --grad-brand: linear-gradient(117deg, #7817ff 19%, #b6ffc5 82%);

  --radius: 28px;
  --radius-sm: 18px;
  --maxw: 1200px;
  --shadow: 0 24px 60px -28px rgba(48, 9, 102, 0.4);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Poppins", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink);
  /* Warm béžová wash with a faint purple glow — the original onfine.cz backdrop */
  background:
    radial-gradient(1100px 720px at 92% -6%, rgba(120, 23, 255, 0.07), transparent 60%),
    radial-gradient(820px 560px at -8% 18%, rgba(182, 255, 197, 0.28), transparent 58%),
    linear-gradient(180deg, var(--beige) 0%, #fcf3ec 42%, var(--beige-50) 100%);
  background-attachment: fixed;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--purple); }

.page {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  padding: 36px 0 8px;
}
.brand-logo { height: 52px; width: auto; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  padding: 56px 0 32px;
}
.hero h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.3rem);
  line-height: 1.1;
  font-weight: 700;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
/* playful purple underline on a key word feel */
.hero h1 .accent { color: var(--purple); }
.lead {
  font-size: 1.2rem;
  color: var(--slate);
  max-width: 36ch;
  margin: 0;
}
.hero-art img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 28px 44px rgba(119, 23, 255, 0.16));
}

/* ---------- Resting notice ---------- */
.notice { padding: 24px 0 8px; }
.notice-card {
  position: relative;
  display: flex;
  gap: 24px;
  align-items: flex-start;
  background: var(--surface);
  color: var(--ink);
  border: 2px solid var(--pink);
  border-radius: var(--radius);
  padding: 34px 38px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
/* soft purple corner glow instead of a flat gradient bar */
.notice-card::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -40px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(120, 23, 255, 0.14), transparent 70%);
  pointer-events: none;
}
.notice-icon {
  font-size: 1.8rem;
  line-height: 1;
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  background: var(--purple);
  border-radius: 50%;
}
.notice-card h2 {
  margin: 0 0 8px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--purple-deep);
}
.notice-card p {
  margin: 0;
  color: var(--slate);
  font-size: 1.04rem;
  position: relative;
}
.notice-card strong { color: var(--purple); }

/* ---------- About ---------- */
.about { padding: 64px 0 16px; max-width: 64ch; }
.about h2,
.contact h2 {
  font-size: 1.7rem;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--ink);
}
.about p { color: var(--slate); font-size: 1.1rem; }

/* ---------- Contact ---------- */
.contact { padding: 44px 0 72px; }
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 8px;
}
.contact-block {
  background: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 28px 26px;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}
.contact-block:hover {
  transform: translateY(-3px);
  border-color: var(--pink);
  box-shadow: 0 18px 40px -26px rgba(119, 23, 255, 0.45);
}
.contact-block h3 {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--purple);
  margin: 0 0 12px;
}
.contact-block p { margin: 0; color: var(--ink); }
.contact-block a { font-weight: 500; text-decoration: none; }
.contact-block a:hover { text-decoration: underline; }
.muted { color: var(--muted); font-size: 0.94rem; }

/* ---------- Footer ---------- */
.site-footer {
  /* break out of the centered .page container to span the full viewport */
  width: 100vw;
  margin-left: calc(50% - 50vw);
  background: linear-gradient(135deg, var(--purple-900) 0%, var(--purple-600) 70%, var(--purple) 100%);
  color: rgba(255, 255, 255, 0.85);
  padding: 52px 24px;
  text-align: center;
  margin-top: 56px;
}
.footer-logo {
  height: 38px;
  width: auto;
  margin: 0 auto 16px;
}
.site-footer p { margin: 0; font-size: 0.92rem; }

/* ---------- Header nav ---------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-link {
  font-weight: 500;
  text-decoration: none;
  color: var(--ink);
  padding: 9px 20px;
  background: var(--surface);
  border: 2px solid var(--line);
  border-radius: 999px;
  transition: border-color 0.18s, color 0.18s, transform 0.18s;
}
.nav-link:hover { border-color: var(--pink); color: var(--purple); transform: translateY(-2px); }

/* ---------- Blog listing ---------- */
.blog-intro { padding: 44px 0 8px; max-width: 64ch; }
.blog-intro h1 {
  font-size: clamp(2.1rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 12px 0 14px;
  color: var(--ink);
}
.back-link {
  display: inline-block;
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--purple);
  margin-bottom: 8px;
}
.back-link:hover { text-decoration: underline; }

.blog-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 32px 0 72px;
}
.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
}
.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--pink);
  box-shadow: var(--shadow);
}
.blog-card-thumb {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.blog-card-body { padding: 18px 22px 24px; }
.blog-card-meta {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 500;
}
.blog-card h2 {
  font-size: 1.08rem;
  font-weight: 600;
  line-height: 1.35;
  margin: 8px 0 0;
}

/* ---------- Article ---------- */
.article { max-width: 720px; margin: 0 auto; padding: 32px 0 56px; }
.article h1 {
  font-size: clamp(1.9rem, 3.6vw, 2.7rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin: 14px 0 12px;
  color: var(--ink);
}
.article-meta {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.95rem;
  margin: 0 0 24px;
}
.article-hero {
  width: 100%;
  border-radius: var(--radius-sm);
  margin: 0 0 32px;
}
.article-body { font-size: 1.08rem; color: var(--slate); }
.article-body h2 { font-size: 1.5rem; font-weight: 700; margin: 36px 0 12px; letter-spacing: -0.01em; color: var(--ink); }
.article-body h3 { font-size: 1.22rem; font-weight: 600; margin: 28px 0 10px; color: var(--ink); }
.article-body p { margin: 0 0 18px; }
.article-body ul, .article-body ol { margin: 0 0 18px; padding-left: 24px; }
.article-body li { margin-bottom: 8px; }
.article-body a { color: var(--purple); text-decoration: underline; }
.article-body img { border-radius: var(--radius-sm); margin: 24px auto; height: auto; }
.article-body figure { margin: 24px 0; }
.article-body figure img { margin: 0 auto; }
.article-body blockquote {
  margin: 24px 0;
  padding: 4px 0 4px 22px;
  border-left: 4px solid var(--purple);
  color: var(--slate);
  font-style: italic;
}
.article .back-link { margin-top: 8px; }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .blog-list { grid-template-columns: 1fr; }
  .hero {
    grid-template-columns: 1fr;
    padding: 32px 0 8px;
  }
  .hero-art { order: -1; max-width: 360px; }
  .lead { max-width: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .notice-card { flex-direction: column; gap: 16px; padding: 28px 26px; }
}