/* =========================================================
   JIUFA — Landing Page — Base tokens & shared primitives
   Dùng chung cho cả layout Mobile và PC (không chứa layout)
   ========================================================= */

:root{
  --bg-void:      #07080f;
  --bg-deep:      #0d1020;
  --bg-panel:     #12162a;
  --bg-panel-2:   #171c33;

  --line:         rgba(212, 175, 85, 0.18);
  --line-soft:    rgba(255, 255, 255, 0.07);

  --gold:         #e8c15c;
  --gold-strong:  #f3d27a;
  --gold-dim:     #9a7f3a;

  --arcane:       #9b6bff;
  --arcane-2:     #5ad1c9;

  --text-hi:      #f3ecd8;
  --text:         #cdc7b8;
  --text-dim:     #8a8578;
  --text-faint:   #5c5848;

  --radius-s: 6px;
  --radius-m: 12px;
  --radius-l: 20px;
  --radius-xl: 28px;

  --shadow-1: 0 2px 8px rgba(0,0,0,0.35);
  --shadow-2: 0 10px 32px rgba(0,0,0,0.5);
  --glow-gold: 0 0 16px rgba(232,193,92,0.25);
  --glow-arcane: 0 0 18px rgba(155,107,255,0.35);

  --font-display: 'Playfair Display', 'Noto Serif TC', Georgia, serif;
  --font-body: 'Noto Sans TC', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

*{ box-sizing: border-box; }
html,body{ margin:0; padding:0; }
html{ background: var(--bg-void); scroll-behavior: smooth; }

body{
  font-family: var(--font-body);
  color: var(--text);
  background:
    repeating-linear-gradient(135deg, rgba(255,255,255,0.013) 0px, rgba(255,255,255,0.013) 1px, transparent 1px, transparent 28px),
    radial-gradient(1200px 600px at 15% -10%, rgba(155,107,255,0.12), transparent 60%),
    radial-gradient(1000px 700px at 110% 10%, rgba(232,193,92,0.10), transparent 55%),
    radial-gradient(900px 500px at 50% 120%, rgba(232,193,92,0.06), transparent 60%),
    var(--bg-void);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

img, svg{ display:block; max-width:100%; }
button{ font-family: inherit; cursor:pointer; }
a{ color: inherit; text-decoration: none; }
ul{ margin:0; padding:0; list-style:none; }
::selection{ background: var(--arcane); color: #fff; }

*::-webkit-scrollbar{ width: 8px; height: 8px; }
*::-webkit-scrollbar-track{ background: transparent; }
*::-webkit-scrollbar-thumb{
  background: linear-gradient(180deg, var(--gold-dim), var(--gold));
  border-radius: 999px;
}
*::-webkit-scrollbar-thumb:hover{ background: var(--gold-strong); }

.top-flourish{
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold-dim), var(--gold-strong), var(--arcane), var(--gold-strong), var(--gold-dim), transparent);
  box-shadow: 0 0 12px rgba(232,193,92,0.35);
  position: relative; z-index: 60;
}

/* Layout switcher: 1 breakpoint quyết định app nào hiển thị.
   Mobile và PC là hai cây DOM/markup khác nhau hoàn toàn. */
#site-pc{ display: block; }
#site-mobile{ display: none; }

@media (max-width: 860px){
  #site-pc{ display: none; }
  #site-mobile{ display: block; }
}

/* ---------- Nút chung ---------- */
.btn{
  position: relative;
  overflow: hidden;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--line);
  background: var(--bg-panel-2);
  color: var(--text-hi);
  border-radius: var(--radius-m);
  padding: 12px 22px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .02em;
  white-space: nowrap;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.btn:hover{ border-color: var(--gold); box-shadow: var(--glow-gold); }
.btn:active{ transform: scale(.97); }

.btn-outline-gold{
  background: transparent;
  border: 1px solid var(--gold-dim);
  color: var(--gold-strong);
}
.btn-outline-gold:hover{ background: rgba(232,193,92,0.08); }

.btn-cta{
  font-family: var(--font-display);
  letter-spacing: .04em;
  background: linear-gradient(160deg, var(--gold-strong), var(--gold) 55%, var(--gold-dim));
  color: #1c1404;
  border-color: var(--gold-strong);
  box-shadow: 0 4px 16px rgba(232,193,92,0.35);
}
.btn-cta::after{
  content: "";
  position: absolute; top: 0; left: -60%;
  width: 35%; height: 100%;
  background: linear-gradient(115deg, transparent, rgba(255,255,255,0.55), transparent);
  transform: skewX(-18deg);
  transition: left .55s ease;
  z-index: 1;
}
.btn-cta:hover::after{ left: 130%; }

.btn-lg{ padding: 15px 30px; font-size: 15px; }

/* ---------- Divider hoạ tiết ---------- */
.divider{
  display:flex; align-items:center; gap:10px;
  margin: 10px 0 0;
}
.divider::before, .divider::after{
  content:""; flex:1; height:1px;
  background: linear-gradient(90deg, transparent, var(--line));
}
.divider::after{ background: linear-gradient(90deg, var(--line), transparent); }
.divider i{
  width:6px; height:6px; flex: none;
  background: var(--gold);
  transform: rotate(45deg);
  box-shadow: var(--glow-gold);
}

/* ---------- Khung góc trang trí (ornate) ---------- */
.ornate{ position: relative; }
.ornate::before, .ornate::after{
  content:"";
  position:absolute; width:14px; height:14px;
  opacity:.85; pointer-events:none;
}
.ornate::before{ top:-1px; left:-1px; border-top:2px solid var(--gold-dim); border-left:2px solid var(--gold-dim); }
.ornate::after{ bottom:-1px; right:-1px; border-bottom:2px solid var(--gold-dim); border-right:2px solid var(--gold-dim); }

/* ---------- Nhãn nhỏ ---------- */
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family: var(--font-display);
  font-size: 12px; letter-spacing:.18em; text-transform:uppercase;
  color: var(--gold-strong);
}
.eyebrow::before{
  content:""; width:6px; height:6px; background: var(--gold); transform: rotate(45deg);
  box-shadow: var(--glow-gold);
}

.tag{
  display:inline-flex; align-items:center; gap:6px;
  font-size: 11px; font-weight:700; letter-spacing:.04em;
  padding: 4px 10px; border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--text-dim);
  text-transform: uppercase;
}
.tag.gold{ color: var(--gold-strong); border-color: var(--gold-dim); }

/* ---------- Reveal on scroll ---------- */
[data-reveal]{
  opacity: 0; transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}
[data-reveal].is-visible{ opacity: 1; transform: none; }

/* ---------- Icon SVG (thay thế emoji) ---------- */
.ic{ display:block; overflow: visible; filter: drop-shadow(0 3px 10px rgba(0,0,0,0.45)); }
.ic-glow{ filter: drop-shadow(0 3px 10px rgba(0,0,0,0.45)) drop-shadow(0 0 20px rgba(232,193,92,0.35)); }

/* ---------- Newsletter form (chung) ---------- */
.subscribe-form{
  display:flex; gap:10px;
}
.subscribe-form input{
  flex: 1;
  background: var(--bg-panel-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 12px 16px;
  color: var(--text-hi);
  font-size: 14px;
  font-family: inherit;
  min-width: 0;
}
.subscribe-form input:focus{ outline: none; border-color: var(--gold); box-shadow: var(--glow-gold); }
.subscribe-form input::placeholder{ color: var(--text-faint); }