:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --fg: var(--brand-black);
  --fg-muted: #5c6470;
  --border: #e4e6ea;
  --primary: var(--brand-blue);
  --link: var(--brand-blue-strong);
  --shadow: 0 1px 2px rgba(15, 15, 15, .06), 0 4px 16px rgba(15, 15, 15, .06);
  --shadow-hover: 0 2px 4px rgba(15, 15, 15, .08), 0 14px 34px rgba(15, 15, 15, .12);
  --black-accent: var(--brand-black);

  font-family: var(--font-body);
  color: var(--fg);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0c;
    --surface: #161618;
    --fg: #f1f1f2;
    --fg-muted: #a0a3aa;
    --border: #2a2b2f;
    --link: #7aaeff;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4);
    --shadow-hover: 0 10px 30px rgba(0, 0, 0, .55);
    --black-accent: #f1f1f2; /* Бараан дэвсгэр дээр хар өнгийг цагаанаар орлуулна */
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); min-height: 100vh; display: flex; flex-direction: column; }
main { flex: 1; }
a { color: inherit; text-decoration: none; }
.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* Толгой */
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.header-row { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.logo { display: flex; align-items: center; }
.logo img { height: 44px; width: auto; display: block; }
.brand { display: flex; align-items: center; gap: 14px; min-width: 0; }
.tagline {
  padding-left: 14px; border-left: 2px solid var(--brand-blue);
  font: 700 14px var(--font-display); letter-spacing: .06em; text-transform: uppercase; color: var(--fg); white-space: nowrap;
}
.header-meta { font-size: 13px; color: var(--fg-muted); text-align: right; }

/* Картууд — бүтэн өргөнөөр, зөвхөн босоо чиглэлд голлоно */
main { display: flex; align-items: center; }
.systems { padding-top: 32px; padding-bottom: 32px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; width: 100%; }
.card {
  --accent: var(--brand-blue);
  --on-accent: #fff;
  position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
  text-align: center; overflow: hidden; min-height: 170px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 28px 16px;
  box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s, border-color .15s;
}
.card::before { content: ''; position: absolute; left: 0; right: 0; top: 0; height: 4px; background: var(--accent); }
.card[data-accent="news"]      { --accent: var(--brand-orange); }
.card[data-accent="gov"]       { --accent: var(--black-accent); --on-accent: var(--surface); }
.card[data-accent="business"]  { --accent: var(--brand-yellow); --on-accent: var(--brand-black); }
.card[data-accent="people"]    { --accent: var(--brand-purple); }
.card[data-accent="dashboard"] { --accent: var(--brand-blue); }
.card:not(.soon):hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: var(--accent); }
.card:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.card.soon { cursor: default; }
.card.soon .card-icon, .card.soon h3 { opacity: .6; }

.card-icon {
  width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent); color: var(--on-accent);
}
.card-icon svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.card h3 { margin: 0; font: 700 17px var(--font-display); text-transform: uppercase; letter-spacing: .03em; }
.badge {
  margin-top: 2px; font: 600 12px var(--font-display); padding: 5px 12px; border-radius: 999px;
  background: var(--bg); color: var(--fg-muted); border: 1px solid var(--border);
}
.card p { margin: -6px 0 0; max-width: 300px; font-size: 14px; line-height: 1.5; color: var(--fg-muted); }
.card.soon p { opacity: .8; }
.card.featured p { color: rgba(255, 255, 255, .9); }

/* Нээлттэй систем — брэндийн цэнхэр дүүргэлттэй онцлох карт */
.card.featured { background: var(--brand-blue); border-color: var(--brand-blue); color: #fff; }
.card.featured::before { display: none; }
.card.featured::after {
  content: ''; position: absolute; width: 180px; height: 180px; border-radius: 50%; right: -60px; bottom: -70px;
  background: rgba(255, 255, 255, .14); pointer-events: none;
}
.card.featured .card-icon { background: #fff; color: var(--brand-blue); }
.card.featured:hover { border-color: var(--brand-black); }

/* Хөл */
.site-footer { border-top: 1px solid var(--border); background: var(--surface); font-size: 13px; color: var(--fg-muted); }
.site-footer .container { display: flex; justify-content: space-between; align-items: center; gap: 8px 16px; flex-wrap: wrap; padding-top: 18px; padding-bottom: 18px; }
.footer-mail { display: inline-flex; align-items: center; gap: 6px; color: var(--link); font-weight: 600; }
.footer-mail svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.footer-mail:hover { text-decoration: underline; }
.site-footer a { color: var(--link); }

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .header-meta { display: none; }
}
@media (max-width: 560px) {
  .container { padding: 0 16px; }
  .header-row { height: 60px; }
  .logo img { height: 36px; }
  .grid { gap: 12px; }
  .card { min-height: 140px; }
  .card h3 { font-size: 15px; }
  .card p { font-size: 12.5px; }
  .brand { gap: 10px; }
  .tagline { font-size: 12px; padding-left: 10px; white-space: normal; line-height: 1.25; }
  .card { padding: 20px 10px; }
}