/* ═══════════════════════════════════════════════════════════════
   ХАРХОРУМ — Design DNA: "Түүхэн нийслэл × Ирээдүйн хот"
   Шөнийн номин тэнгэр · Орхоны оюу · Эзэнт гүрний алт · Суваргын цагаан
   ═══════════════════════════════════════════════════════════════ */
:root {
  --night: #070D22;          /* гүн шөнийн номин */
  --night-2: #0B1430;
  --surface: #101A3A;
  --surface-2: #16224A;
  --hairline: rgba(120, 150, 220, .16);
  --hairline-soft: rgba(120, 150, 220, .08);
  --ink: #EDE9DE;            /* илгэн цаасны цагаан */
  --muted: #9DA8C8;
  --faint: #6B7699;
  --oyu: #38D6C5;            /* Орхоны оюу */
  --oyu-deep: #17A697;
  --gold: #D9A441;           /* эзэнт гүрний алт */
  --gold-soft: rgba(217, 164, 65, .14);
  --oyu-soft: rgba(56, 214, 197, .12);
  --danger: #E4604F;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-sm: 9px;
  --font-display: 'Playfair Display', 'Georgia', serif;
  --font-body: 'Manrope', 'Segoe UI', sans-serif;
  --shadow: 0 18px 50px rgba(3, 6, 20, .55);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--night);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.65;
  min-height: 100vh;
}
::selection { background: var(--gold); color: var(--night); }
a { color: var(--oyu); text-decoration: none; }
a:hover { color: var(--gold); }
h1, h2, h3, .display { font-family: var(--font-display); font-weight: 600; letter-spacing: .01em; }

/* --- өлзий хээ divider --- */
.ulzii-divider {
  display: flex; align-items: center; gap: 14px; margin: 8px 0;
  color: var(--gold); opacity: .75;
}
.ulzii-divider::before, .ulzii-divider::after {
  content: ''; flex: 1; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold) 40%, var(--gold) 60%, transparent);
  opacity: .45;
}

/* --- top nav --- */
.kh-nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 22px;
  padding: 14px 28px;
  background: rgba(7, 13, 34, .82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--hairline-soft);
}
.kh-nav .brand {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-display); font-size: 17px; color: var(--ink);
}
.kh-nav .brand .mark {
  width: 34px; height: 34px; border-radius: 9px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--gold), #B37E1F);
  color: var(--night); font-weight: 700; font-size: 16px;
  box-shadow: 0 4px 14px rgba(217, 164, 65, .35);
}
.kh-nav .links { display: flex; gap: 4px; margin-left: auto; }
.kh-nav .links a {
  padding: 7px 14px; border-radius: 8px; color: var(--muted); font-size: 13.5px; font-weight: 600;
}
.kh-nav .links a:hover, .kh-nav .links a.active { color: var(--ink); background: var(--surface); }
.kh-nav .links a.cta {
  color: var(--night); background: linear-gradient(135deg, var(--oyu), var(--oyu-deep));
  box-shadow: 0 4px 14px rgba(56, 214, 197, .3);
}

/* --- buttons --- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 11px; border: 1px solid var(--hairline);
  background: var(--surface); color: var(--ink);
  font-family: var(--font-body); font-size: 14px; font-weight: 700; cursor: pointer;
  transition: all .18s ease;
}
.btn:hover { border-color: var(--oyu); transform: translateY(-1px); }
.btn.primary {
  background: linear-gradient(135deg, var(--oyu), var(--oyu-deep));
  color: #04241F; border: none; box-shadow: 0 6px 20px rgba(56, 214, 197, .35);
}
.btn.gold {
  background: linear-gradient(135deg, var(--gold), #B37E1F);
  color: var(--night); border: none; box-shadow: 0 6px 20px rgba(217, 164, 65, .3);
}
.btn.ghost { background: transparent; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

/* --- cards --- */
.card {
  background: linear-gradient(180deg, var(--surface), var(--night-2));
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 22px;
}
.card:hover { border-color: rgba(120, 150, 220, .3); }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--gold); background: var(--gold-soft);
  border: 1px solid rgba(217, 164, 65, .3);
  padding: 4px 12px; border-radius: 99px;
}
.badge.oyu { color: var(--oyu); background: var(--oyu-soft); border-color: rgba(56, 214, 197, .3); }

/* --- inputs --- */
input, textarea, select {
  width: 100%; padding: 11px 14px;
  background: var(--night-2); border: 1px solid var(--hairline); border-radius: 10px;
  color: var(--ink); font-family: var(--font-body); font-size: 14.5px;
  outline: none; transition: border-color .15s;
}
input:focus, textarea:focus, select:focus { border-color: var(--oyu); }
textarea { resize: vertical; min-height: 52px; }
label { font-size: 12.5px; font-weight: 700; color: var(--muted); letter-spacing: .04em; }

/* --- chat bubbles --- */
.msg { display: flex; gap: 12px; margin: 18px 0; }
.msg .avatar {
  flex: 0 0 36px; width: 36px; height: 36px; border-radius: 10px;
  display: grid; place-items: center; font-size: 17px;
  background: var(--surface-2); border: 1px solid var(--hairline);
}
.msg.user .avatar { background: var(--gold-soft); border-color: rgba(217, 164, 65, .35); }
.msg .bubble {
  flex: 1; min-width: 0; padding: 14px 18px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--hairline-soft);
}
.msg.user .bubble { background: var(--surface-2); }
.msg .bubble p { margin: 0 0 10px; } .msg .bubble p:last-child { margin: 0; }
.msg .bubble h1, .msg .bubble h2, .msg .bubble h3 { margin: 14px 0 8px; font-size: 1.1em; color: var(--gold); }
.msg .bubble ul, .msg .bubble ol { margin: 8px 0 10px 22px; }
.msg .bubble li { margin: 3px 0; }
.msg .bubble code { background: var(--night-2); padding: 2px 6px; border-radius: 5px; font-size: .9em; }
.msg .bubble pre { background: var(--night-2); padding: 12px; border-radius: 9px; overflow-x: auto; margin: 10px 0; }
.msg .bubble table { border-collapse: collapse; margin: 10px 0; width: 100%; font-size: .93em; }
.msg .bubble th, .msg .bubble td { border: 1px solid var(--hairline); padding: 6px 10px; text-align: left; }
.msg .bubble th { background: var(--night-2); color: var(--gold); }
.msg .bubble strong { color: var(--gold); }
.msg .bubble blockquote { border-left: 3px solid var(--oyu); padding-left: 12px; color: var(--muted); margin: 8px 0; }

/* --- citations --- */
.citations { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.citation {
  font-size: 12px; padding: 5px 11px; border-radius: 8px;
  background: var(--oyu-soft); border: 1px solid rgba(56, 214, 197, .25); color: var(--oyu);
}
.conf-badge { font-size: 12.5px; color: var(--muted); margin-top: 10px; display: inline-flex; align-items: center; gap: 6px; }

/* --- typing dots --- */
.typing { display: inline-flex; gap: 5px; padding: 4px 0; }
.typing i { width: 7px; height: 7px; border-radius: 50%; background: var(--oyu); animation: tp 1.2s infinite; }
.typing i:nth-child(2) { animation-delay: .15s; } .typing i:nth-child(3) { animation-delay: .3s; }
@keyframes tp { 0%, 60%, 100% { opacity: .25; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-4px); } }

/* --- KPI --- */
.kpi { display: grid; gap: 6px; }
.kpi .num { font-family: var(--font-display); font-size: 34px; color: var(--gold); line-height: 1.1; }
.kpi .lbl { font-size: 12.5px; color: var(--muted); letter-spacing: .05em; text-transform: uppercase; font-weight: 700; }

/* --- table --- */
.kh-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.kh-table th {
  text-align: left; padding: 10px 12px; color: var(--faint);
  font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase;
  border-bottom: 1px solid var(--hairline);
}
.kh-table td { padding: 10px 12px; border-bottom: 1px solid var(--hairline-soft); }
.kh-table tr:hover td { background: rgba(120, 150, 220, .04); }

/* --- scrollbar --- */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: var(--night); }
::-webkit-scrollbar-thumb { background: var(--surface-2); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--faint); }

/* --- utility --- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 28px; }
.grid { display: grid; gap: 18px; }
.muted { color: var(--muted); } .faint { color: var(--faint); }
.gold { color: var(--gold); } .oyu { color: var(--oyu); }
.small { font-size: 13px; }
.fade-up { animation: fadeUp .7s ease both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

@media (max-width: 860px) {
  .kh-nav { padding: 12px 16px; flex-wrap: wrap; }
  .kh-nav .links { width: 100%; overflow-x: auto; }
  .container { padding: 0 16px; }
}