:root {
  --ink: #0d1216;
  --panel: #141b21;
  --panel-hi: #1a232b;
  --line: #25303a;
  --text: #e7e3d6;
  --muted: #8a96a1;
  --realm: #7fb88a;            /* JS đổi theo cảnh giới */
  --hp: #c8554b;
  --mp: #5e8fd6;
  --sta: #c9a66b;
  --serif: "Noto Serif Display", "Noto Serif", Georgia, serif;
  --sans: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  --tint: color-mix(in srgb, var(--realm) 10%, var(--ink));
  --tint-hi: color-mix(in srgb, var(--realm) 18%, var(--panel));
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0; min-height: 100vh;
  background: radial-gradient(1200px 700px at 78% -10%, color-mix(in srgb, var(--realm) 14%, transparent), transparent 70%), var(--ink);
  color: var(--text);
  font: 400 15px/1.55 var(--sans);
  transition: background .6s;
}
button { font: inherit; color: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--realm); outline-offset: 2px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; margin: 0; letter-spacing: .01em; }
p { margin: 0; }
.muted { color: var(--muted); }
.num { font-variant-numeric: tabular-nums; }

/* ---------- đăng nhập ---------- */
.login {
  min-height: 100vh; display: grid; place-items: center; padding: 24px;
  background: center / cover no-repeat var(--bg, none);
}
.login-box { max-width: 420px; text-align: center; display: grid; gap: 18px; }
.login-box h1 { font-size: clamp(38px, 9vw, 58px); line-height: 1.05; }
.login-box p { color: var(--muted); }
.login-err { color: #e8998f; background: color-mix(in srgb, var(--hp) 14%, transparent); padding: 10px 14px; border-radius: 10px; }

.btn {
  border: 1px solid color-mix(in srgb, var(--realm) 55%, var(--line));
  background: color-mix(in srgb, var(--realm) 16%, var(--panel));
  padding: 9px 18px; border-radius: 10px; font-weight: 500;
  transition: background .15s, transform .1s;
}
.btn:hover:not(:disabled) { background: color-mix(in srgb, var(--realm) 28%, var(--panel)); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.big { padding: 13px 28px; font-size: 16px; border-radius: 12px; }
.btn.quiet { background: transparent; border-color: var(--line); color: var(--muted); }
.btn.quiet:hover:not(:disabled) { color: var(--text); background: var(--panel-hi); }
.btn.danger { border-color: color-mix(in srgb, var(--hp) 60%, var(--line)); background: color-mix(in srgb, var(--hp) 18%, var(--panel)); }
.btn.sm { padding: 5px 12px; font-size: 13px; border-radius: 8px; }

/* ---------- khung chính ---------- */
.shell { max-width: 1180px; margin: 0 auto; padding: 0 16px 48px; }
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; gap: 12px; }
.brand { font: 600 22px var(--serif); letter-spacing: .02em; }
.who { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 14px; }
.who img { width: 30px; height: 30px; border-radius: 50%; background: var(--panel-hi); }
.who a { color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }

.layout { display: grid; grid-template-columns: 300px 1fr; gap: 28px; align-items: start; }
@media (max-width: 860px) { .layout { grid-template-columns: minmax(0, 1fr); } }
.layout > * { min-width: 0; }

/* ---------- đạo thân (cột trái) ---------- */
.side { background: var(--tint-hi); border-radius: 18px; padding: 22px 20px; display: grid; gap: 18px; position: sticky; top: 16px; }
@media (max-width: 860px) { .side { position: static; } }
.seal-row { display: flex; gap: 14px; align-items: center; }
.seal {
  width: 64px; height: 64px; flex: none; display: grid; place-items: center;
  border: 2px solid var(--realm); border-radius: 14px; transform: rotate(-4deg);
  font: 600 22px var(--serif); color: var(--realm);
  background: color-mix(in srgb, var(--realm) 10%, transparent);
  background-size: cover; background-position: center; overflow: hidden;
}
.seal img { width: 100%; height: 100%; object-fit: cover; }
.realm-name { font: 600 24px/1.1 var(--serif); }
.realm-stage { color: var(--muted); font-size: 14px; margin-top: 3px; }

.meter { display: grid; gap: 5px; }
.meter-head { display: flex; justify-content: space-between; font-size: 13px; color: var(--muted); }
.meter-head b { color: var(--text); font-weight: 500; }
.bar { height: 7px; border-radius: 99px; background: color-mix(in srgb, var(--ink) 70%, transparent); overflow: hidden; }
.bar > i { display: block; height: 100%; width: 0; border-radius: 99px; background: var(--c, var(--realm)); transition: width .5s ease; }
.bar.hp { --c: var(--hp); } .bar.mp { --c: var(--mp); } .bar.sta { --c: var(--sta); }

.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 14px; font-size: 14px; }
.stats div { display: flex; justify-content: space-between; border-bottom: 1px dashed var(--line); padding-bottom: 3px; }
.stats span { color: var(--muted); }
.gold { display: flex; align-items: baseline; justify-content: space-between; }
.gold b { font: 600 24px var(--serif); color: var(--sta); }
.gold span { color: var(--muted); font-size: 13px; }

/* ---------- tab ---------- */
.tabs { display: flex; gap: 22px; border-bottom: 1px solid var(--line); margin-bottom: 24px; overflow-x: auto; scrollbar-width: none; }
.tab {
  background: none; border: 0; padding: 10px 2px; color: var(--muted); font-size: 15px; white-space: nowrap;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tab:hover { color: var(--text); }
.tab[aria-selected="true"] { color: var(--text); border-bottom-color: var(--realm); font-weight: 500; }

.stage {
  border-radius: 20px; padding: 28px; min-height: 420px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel) 80%, transparent), transparent 70%), center / cover no-repeat var(--bg, none), var(--panel);
}
@media (max-width: 560px) { .stage { padding: 18px; } }

/* ---------- bế quan: vòng linh khí xoáy ---------- */
.med { display: grid; justify-items: center; gap: 22px; padding: 10px 0 4px; text-align: center; }
.vortex { position: relative; width: min(340px, 78vw); aspect-ratio: 1; display: grid; place-items: center; }
.vortex::before, .vortex::after { content: ""; position: absolute; inset: 0; border-radius: 50%; }
.vortex::before {
  background: conic-gradient(from 0deg, transparent 0 20%, var(--realm) 55%, transparent 80%);
  -webkit-mask: radial-gradient(circle, transparent 66%, #000 67% 70%, transparent 71%);
          mask: radial-gradient(circle, transparent 66%, #000 67% 70%, transparent 71%);
  opacity: .55;
}
.vortex::after {
  inset: 11%;
  background: conic-gradient(from 180deg, transparent 0 35%, color-mix(in srgb, var(--realm) 70%, #fff) 70%, transparent 95%);
  -webkit-mask: radial-gradient(circle, transparent 64%, #000 65% 68%, transparent 69%);
          mask: radial-gradient(circle, transparent 64%, #000 65% 68%, transparent 69%);
  opacity: .4;
}
.vortex.on::before { animation: spin 16s linear infinite; opacity: .95; }
.vortex.on::after { animation: spin 11s linear infinite reverse; opacity: .8; }
.core {
  width: 62%; aspect-ratio: 1; border-radius: 50%; display: grid; place-content: center; gap: 2px;
  background: radial-gradient(circle, color-mix(in srgb, var(--realm) 26%, var(--panel)) 0%, color-mix(in srgb, var(--realm) 6%, var(--ink)) 72%);
  box-shadow: 0 0 60px color-mix(in srgb, var(--realm) 22%, transparent);
}
.vortex.on .core { animation: breathe 6s ease-in-out infinite; }
.core b { font: 600 clamp(30px, 8vw, 44px)/1 var(--serif); }
.core span { color: var(--muted); font-size: 13px; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes breathe { 50% { transform: scale(1.06); box-shadow: 0 0 90px color-mix(in srgb, var(--realm) 36%, transparent); } }
@media (prefers-reduced-motion: reduce) { .vortex.on::before, .vortex.on::after, .vortex.on .core { animation: none; } }

.med-info { display: grid; gap: 6px; max-width: 460px; }
.med-info h2 { font-size: 22px; }
.med-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.rule { color: var(--muted); font-size: 13px; max-width: 460px; }
.capbar { width: min(360px, 100%); }

/* ---------- lịch luyện ---------- */
.zone { padding: 4px 0 26px; }
.zone + .zone { border-top: 1px solid var(--line); padding-top: 24px; }
.zone-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 4px; }
.zone-head h2 { font-size: 22px; }
.lock { color: var(--sta); font-size: 13px; }
.zone p.muted { margin-bottom: 14px; max-width: 60ch; }
.mons { display: grid; gap: 8px; }
.mon {
  display: grid; grid-template-columns: 52px 1fr auto; gap: 14px; align-items: center;
  background: var(--panel-hi); padding: 10px 14px; border-radius: 12px;
}
.mon.boss { background: linear-gradient(90deg, color-mix(in srgb, var(--hp) 16%, var(--panel-hi)), var(--panel-hi) 60%); }
.glyph { width: 52px; height: 52px; border-radius: 12px; display: grid; place-items: center; font-size: 28px; background: var(--ink); overflow: hidden; }
.glyph img { width: 100%; height: 100%; object-fit: cover; }
.mon h3 { font: 500 16px var(--sans); }
.mon small { color: var(--muted); display: block; font-size: 12.5px; }
@media (max-width: 560px) { .mon { grid-template-columns: 44px 1fr; } .mon .btn { grid-column: 1 / -1; } .glyph { width: 44px; height: 44px; } }

/* ---------- đấu trường ---------- */
.arena { display: grid; gap: 20px; }
.duel { display: grid; grid-template-columns: 1fr auto 1fr; gap: 16px; align-items: start; }
.vs { align-self: center; }
.fighter { display: grid; gap: 10px; justify-items: center; text-align: center; }
.fighter .glyph { width: 88px; height: 88px; font-size: 48px; border-radius: 18px; }
.fighter .meter { width: 100%; max-width: 230px; }
.vs { font: italic 400 22px var(--serif); color: var(--muted); }
.buffnote { color: var(--mp); font-size: 13px; min-height: 18px; }
@media (max-width: 560px) { .duel { grid-template-columns: 1fr 1fr; } .vs { display: none; } }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
.log {
  background: var(--ink); border-radius: 12px; padding: 12px 14px; height: 170px; overflow-y: auto;
  display: grid; align-content: start; gap: 4px; font-size: 14px;
}
.log p:last-child { color: var(--text); } .log p { color: var(--muted); }
.result { text-align: center; display: grid; gap: 12px; justify-items: center; padding: 14px 0; }
.result h2 { font-size: 30px; }
.result.win h2 { color: var(--realm); } .result.lose h2 { color: var(--hp); }

/* ---------- cửa hàng / hành trang ---------- */
.group + .group { margin-top: 26px; }
.group > h2 { font-size: 19px; margin-bottom: 10px; }
.rows { display: grid; gap: 8px; }
.row {
  display: grid; grid-template-columns: 52px 1fr auto; gap: 14px; align-items: center;
  background: var(--panel-hi); padding: 10px 14px; border-radius: 12px;
}
.row h3 { font: 500 16px var(--sans); }
.row small { color: var(--muted); display: block; font-size: 12.5px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px; }
.chip { font-size: 12px; padding: 1px 8px; border-radius: 99px; background: color-mix(in srgb, var(--realm) 14%, var(--ink)); }
.price { font: 600 15px var(--serif); color: var(--sta); text-align: right; margin-bottom: 4px; }
.row .end { display: grid; justify-items: end; gap: 2px; }
.buy-set { display: flex; gap: 6px; }
.slots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
@media (max-width: 560px) { .slots { grid-template-columns: 1fr; } .row { grid-template-columns: 44px 1fr; } .row .end { grid-column: 1 / -1; justify-items: stretch; } }
.slot { background: var(--panel-hi); border-radius: 12px; padding: 12px 14px; display: grid; gap: 6px; align-content: start; min-height: 96px; }
.slot .muted { font-size: 13px; }
.slot h3 { font: 500 16px var(--sans); }
.empty { color: var(--muted); padding: 18px 0; }

/* ---------- thiên bảng ---------- */
.board { display: grid; gap: 6px; counter-reset: r; }
.brow { display: grid; grid-template-columns: 38px 1fr auto; gap: 12px; align-items: center; padding: 12px 14px; border-radius: 12px; background: var(--panel-hi); }
.brow .rank { font: 600 20px var(--serif); color: var(--muted); text-align: center; }
.brow:nth-child(-n+3) .rank { color: var(--sta); }
.brow h3 { font: 500 16px var(--sans); }
.brow small { display: block; font-size: 13px; }
.brow .tv { text-align: right; font: 600 17px var(--serif); }

/* ---------- thông báo ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  background: var(--panel-hi); border: 1px solid color-mix(in srgb, var(--realm) 40%, var(--line));
  padding: 11px 18px; border-radius: 12px; max-width: min(92vw, 520px); text-align: center;
  transition: opacity .2s, transform .2s; z-index: 10;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.err { border-color: var(--hp); }