@charset "UTF-8";
* { margin:0; padding:0; box-sizing:border-box; }
html, body { height:100%; }
body {
  position:relative;
  isolation:isolate;
  background-color:#000;
  color:#dff4ff;
  font-family:Verdana, Verdana, sans-serif;
  overflow-x:hidden;
}
body::before {
  display:none;
}
body::after {
  display:none;
}

:root {
  /* === VIDEO BACKGROUND === */
  --bg-video-start-x: 0px;        /* đẩy video qua trái/phải */
  --bg-video-start-y: -120px;        /* đẩy video lên/xuống */
  --bg-video-width: 100vw;        /* chiều rộng vùng video */
  --bg-video-height: 100vh;       /* chiều cao vùng video */
  --bgdemo-width: 1920px;
  --bgdemo-height: 1080px;
  --bg-video-fit: cover;          /* cover = chiều ngang phủ đủ hai bên màn hình */
  --bg-video-position-x: center;  /* left / center / right / % */
  --bg-video-position-y: center;  /* top / center / bottom / % */
  --bg-video-scale: 1;            /* 1 = không phóng thêm */
  --bg-video-speed: 0.88;         /* nhỏ hơn 1 = video chạy chậm hơn, dài hơn */
  --bg-video-fade-seconds: 1.2;   /* thời gian crossfade cuối video */
  --bg-video-filter: none;
}

.bg-video-wrap {
  position:fixed;
  left:var(--bg-video-start-x);
  top:var(--bg-video-start-y);
  width:var(--bgdemo-width);
  height:var(--bgdemo-height);
  z-index:0;
  overflow:hidden;
  pointer-events:none;
  user-select:none;
}
.bg-video {
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:var(--bg-video-fit);
  object-position:var(--bg-video-position-x) var(--bg-video-position-y);
  transform:scale(var(--bg-video-scale));
  z-index:0;
  opacity:0;
  filter:var(--bg-video-filter);
  transition:opacity calc(var(--bg-video-fade-seconds) * 1s) linear;
}
.bg-video.is-active { opacity:1; }
.wrap {
  position:relative;
  z-index:100;
  min-height:100vh;
  display:flex;
  align-items:flex-end;
  justify-content:center;
  padding:0 20px 0;
  transform:translateZ(0);
}
.frame {
  position:relative;
  width:100%;
  max-width:1160px;
  aspect-ratio:1536/1024;
  background-image: url('../images/khung.png');
  background-repeat:no-repeat;
  background-position:center bottom;
  background-size:contain;
  filter:drop-shadow(0 10px 40px rgba(0,80,200,0.3));
  margin-bottom:0;
  animation:frameAura 5s ease-in-out infinite alternate;
  z-index:110;
}
/* === BIẾN ĐIỀU CHỈNH MENU - CHỈ SỬA SỐ Ở ĐÂY === */
:root {
  /* === LOGO GÓC TRÊN TRÁI === */
  --logo-start-x: 24px;       /* logo cách lề trái */
  --logo-start-y: 18px;       /* logo cách lề trên */
  --logo-width: 220px;        /* chiều rộng logo */
  --logo-height: auto;        /* chiều cao logo: auto hoặc nhập số px */
  --logo-max-width: 28vw;     /* giới hạn chiều rộng theo màn hình */

  --menu-top: 15.1%;
  --menu-left: 11.5%;
  --menu-right: 11.5%;
  --left-start-x: 50px;
  --left-start-y: 14px;
  --left-gap: 20px;
  --right-start-x: 50px;
  --right-start-y: 14px;
  --right-gap: 20px;
  --cluster-gap: 95px;

  /* === 2 ẢNH MENU DƯỚI KHUNG === */
  --side-menu-width: 280px;   /* chiều rộng chung */
  --side-menu-left-x: 4%;     /* menu trái cách lề trái */
  --side-menu-left-y: 60px;    /* menu trái đẩy lên (+) / xuống (-) so với đáy khung */
  --side-menu-right-x: 4%;    /* menu phải cách lề phải */
  --side-menu-right-y: 70px;  /* menu phải đẩy lên / xuống */
}

/* === LOGO WEBSITE === */
.site-logo {
  position:fixed;
  left:var(--logo-start-x);
  top:var(--logo-start-y);
  width:var(--logo-width);
  height:var(--logo-height);
  max-width:var(--logo-max-width);
  z-index:300;
  pointer-events:none;
  user-select:none;
  filter:drop-shadow(0 8px 22px rgba(0,80,200,0.45));
  animation:logoAura 3.8s ease-in-out infinite alternate;
  transform:translateZ(0);
}

/* === MENU === */
.menu {
  position:absolute;
  top: var(--menu-top);
  left: var(--menu-left);
  right: var(--menu-right);
  display:flex;
  align-items:center;
  justify-content:space-between;
  z-index:10;
}
.nav-group {
  display:flex;
  align-items:center;
  justify-content:flex-start;
  gap: var(--left-gap);
  flex:1;
  transform: translate(var(--left-start-x), var(--left-start-y));
}
.nav-right {
  justify-content:flex-start;
  gap: var(--right-gap);
  transform: translate(var(--right-start-x), var(--right-start-y));
}
.gem-spacer { width: var(--cluster-gap); flex-shrink:0; height:10px; }
.menu-btn {
  font-family:Verdana, Verdana, sans-serif;
  font-weight:700;
  text-transform:uppercase;
  font-size:clamp(13px, 1.25vw, 16px);
  letter-spacing:1.2px;
  color:#cfe8ff;
  text-decoration:none;
  padding:6px 8px;
  position:relative;
  white-space:nowrap;
  text-shadow:0 0 6px #00aaff, 0 0 12px #0066ff;
  transition:all .25s ease;
  animation:menuTextGlow 3.6s ease-in-out infinite alternate;
}
.menu-btn::after {
  content:'';
  position:absolute;
  left:10%;
  right:10%;
  bottom:2px;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(255,220,130,0.9), rgba(112,216,255,0.9), transparent);
  opacity:0;
  transform:scaleX(0.35);
  transition:.25s ease;
}
.menu-btn:hover {
  color:#ffffff;
  text-shadow:0 0 8px #ffffff, 0 0 16px #80e0ff, 0 0 28px #00aaff, 0 0 36px rgba(255,218,120,0.82);
  transform:scale(1.05);
}
.menu-btn:hover::after {
  opacity:1;
  transform:scaleX(1);
}

/* CONTENT */
.content-area {
  position:absolute;
  top:24%;
  left:14%;
  right:14%;
  bottom:24%;
  overflow:auto;
  padding:clamp(12px, 2vw, 24px);
}
.content-area::-webkit-scrollbar { width:5px; }
.content-area::-webkit-scrollbar-thumb { background:rgba(0,170,255,0.5); border-radius:3px; }

.hero {
  width:100%;
  height:100%;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  gap:18px;
}
.hero h3 {
  font-family:Verdana, Verdana, sans-serif;
  font-size:clamp(32px, 6vw, 64px);
  font-weight:700;
  letter-spacing:3px;
  background:linear-gradient(180deg, #fff 0%, #b8e7ff 40%, #5db8ff 60%, #eaf6ff 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  filter:drop-shadow(0 0 20px rgba(0,140,255,0.6));
}
.hero p {
  max-width:620px;
  font-size:clamp(14px, 1.5vw, 17px);
  line-height:1.7;
  color:#c7e8ff;
  text-shadow:0 2px 12px rgba(0,0,0,0.9);
}
.cta {
  display:flex;
  gap:14px;
  margin-top:8px;
  flex-wrap:wrap;
  justify-content:center;
}
.btn {
  font-family:Verdana, Verdana, sans-serif;
  text-transform:uppercase;
  font-weight:700;
  letter-spacing:1px;
  padding:11px 26px;
  border-radius:3px;
  text-decoration:none;
  font-size:13px;
  transition:all .2s;
  border:1px solid #3ab7ff;
  color:#e6f7ff;
  background:linear-gradient(180deg, rgba(0,120,220,0.8), rgba(0,60,140,0.8));
  box-shadow:0 0 15px rgba(0,150,255,0.4), inset 0 1px 0 rgba(255,255,255,0.2);
}
.btn:hover { transform:translateY(-2px); box-shadow:0 0 25px rgba(0,170,255,0.7); }
.btn.secondary {
  background:rgba(0,20,40,0.6);
  backdrop-filter:blur(4px);
}

/* Bottom info */
.bottom-info {
  position:absolute;
  left:0;
  right:0;
  bottom:0%;
  display:flex;
  justify-content:center;
  gap:60px;
  align-items:center;
  font-size:11px;
  color:#8dd4ff;
  opacity:0.95;
  text-shadow:0 0 8px #000;
  letter-spacing:0.5px;
  z-index:5;
}

/* === 2 MENU ẢNH DƯỚI KHUNG === */
.side-menus {
  position:absolute;
  left:0; right:0; bottom:0;
  height:0;
  z-index:180;
  pointer-events:none;
}
.side-menu {
  position:absolute;
  width:var(--side-menu-width);
  max-width:32vw;
  height:auto;
  pointer-events:auto;
  cursor:pointer;
  filter:drop-shadow(0 8px 22px rgba(0,120,255,0.35)) drop-shadow(0 0 12px rgba(255,210,100,0.12));
  transition:transform .2s ease, filter .2s ease;
  user-select:none;
  animation:sideMenuAura 4.2s ease-in-out infinite alternate;
}
.side-menu:hover {
  transform:translateY(-4px) scale(1.03);
  filter:drop-shadow(0 10px 26px rgba(0,150,255,0.48)) drop-shadow(0 0 18px rgba(255,210,100,0.22));
}
.left-menu {
  left:var(--side-menu-left-x);
  bottom:var(--side-menu-left-y);
}
.right-menu {
  right:var(--side-menu-right-x);
  bottom:var(--side-menu-right-y);
}

/* RESPONSIVE */
@media (max-width:900px) {
  body { background-position:center 18%; }
  .menu { left:8%; right:8%; top:16.5%; }
  .gem-spacer { width:80px; }
  .nav-group { gap:24px; }
  :root {
    --side-menu-width:220px;
    --side-menu-left-y:40px;
    --side-menu-right-y:40px;
    --logo-width:170px;
    --logo-start-x:16px;
    --logo-start-y:14px;
  }
}
@media (max-width:768px) {
  body { background-attachment:scroll; }
  :root {
    --logo-width:130px;
    --logo-start-x:12px;
    --logo-start-y:10px;
    --logo-max-width:36vw;
  }
  .wrap { padding:12px 12px 0; align-items:flex-start; }
  .frame {
    aspect-ratio:auto;
    min-height:92vh;
    background-size:100% auto;
    background-position:center top;
  }
  .menu {
    position:relative;
    top:0; left:0; right:0;
    flex-direction:column;
    padding-top:28%;
    gap:10px;
    margin:0 6%;
  }
  .nav-group {
    width:100%;
    justify-content:center;
    gap:12px;
  }
  .gem-spacer { display:none; }
  .menu-btn {
    background:rgba(0,15,35,0.75);
    border:1px solid rgba(0,160,255,0.35);
    border-radius:6px;
    padding:10px 14px;
    width:calc(50% - 6px);
    text-align:center;
    backdrop-filter:blur(6px);
    font-size:14px;
  }
  .content-area {
    position:relative;
    margin:18px 6% 20px;
    min-height:38vh;
    background:rgba(0,8,20,0.55);
    border:1px solid rgba(0,140,255,0.2);
    border-radius:12px;
  }
  .bottom-info { position:relative; margin:0 6% 20px; }
  .side-menus { display:none; } /* ẩn 2 menu ảnh trên mobile */
}
/* === POPUP XẾP HẠNG === */
.popup-overlay {
  position:fixed; inset:0; z-index:1000;
  background:rgba(0,5,15,0.85);
  backdrop-filter:blur(8px);
  display:none; align-items:center; justify-content:center;
  padding:20px;
}
.popup-overlay.active { display:flex; }

.popup-frame {
  width:100%; max-width:920px;
  background:
    linear-gradient(180deg, rgba(8,29,65,0.96), rgba(0,10,30,0.98)),
    linear-gradient(135deg, rgba(255,190,78,0.10), transparent 34%, rgba(255,57,88,0.08));
  border:1px solid rgba(107,215,255,0.86);
  border-radius:10px;
  box-shadow:0 0 46px rgba(0,150,255,0.58), 0 0 26px rgba(255,186,64,0.18), inset 0 0 38px rgba(0,80,180,0.28);
  padding:22px 24px 18px;
  position:relative;
  overflow:hidden;
  color:#dff4ff;
  font-family:Verdana, Verdana, sans-serif;
}
.popup-frame::before {
  content:'';
  position:absolute;
  inset:0;
  pointer-events:none;
  border-radius:inherit;
  background:linear-gradient(120deg, transparent 0%, rgba(255,255,255,0.12) 18%, transparent 34%);
  transform:translateX(-115%);
  animation:panelShine 6s ease-in-out infinite;
}
.popup-frame > * {
  position:relative;
  z-index:1;
}
.popup-close {
  position:absolute; top:8px; right:12px;
  background:none; border:none; color:#8dd4ff;
  font-size:28px; cursor:pointer; line-height:1;
  text-shadow:0 0 10px #00aaff;
}
.popup-close:hover { color:#fff; transform:scale(1.1); }

.popup-title {
  font-family:Verdana, Verdana, sans-serif; text-align:center;
  font-size:clamp(22px,3vw,32px); margin-bottom:14px;
  background:linear-gradient(180deg,#fff 0%, #ffe7a3 28%, #7dd3ff 72%, #fff 100%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
  text-shadow:0 0 20px rgba(0,140,255,0.5);
  filter:drop-shadow(0 0 12px rgba(255,215,110,0.22));
}

.tabs { display:flex; justify-content:center; gap:10px; margin-bottom:14px; }
.tab {
  font-family:Verdana, Verdana, sans-serif; text-transform:uppercase; font-weight:700;
  padding:8px 18px; font-size:13px; letter-spacing:1px;
  background:rgba(0,30,70,0.6); color:#b8e7ff;
  border:1px solid rgba(0,170,255,0.4); border-radius:6px;
  cursor:pointer; transition:0.2s;
}
.tab.active,.tab:hover {
  background:linear-gradient(180deg, rgba(0,120,220,0.9), rgba(0,60,140,0.9));
  color:#fff; box-shadow:0 0 15px rgba(0,170,255,0.6);
}

.ranking-content { min-height:380px; }
.tab-pane { display:none; }
.tab-pane.active { display:block; animation:fade 0.3s; }
@keyframes fade { from{opacity:0; transform:translateY(5px)} to{opacity:1} }

.rank-table { width:100%; border-collapse:collapse; font-size:14px; }
.rank-table th {
  background:rgba(0,80,160,0.4); color:#a8e4ff;
  padding:10px 8px; text-align:left; font-weight:700;
  border-bottom:1px solid rgba(0,170,255,0.4);
  text-transform:uppercase; letter-spacing:0.5px; font-size:12px;
}
.rank-table td {
  padding:9px 8px; border-bottom:1px solid rgba(0,100,180,0.2);
  color:#dff4ff;
}
.rank-table tr:hover td { background:rgba(0,120,220,0.15); }
.rank-table td:first-child,.rank-table th:first-child { text-align:center; width:60px; color:#ffd76a; font-weight:700; }

.pagination {
  display:flex; justify-content:center; align-items:center; gap:16px;
  margin-top:14px; padding-top:12px; border-top:1px solid rgba(0,140,255,0.2);
}
.pagination button {
  background:rgba(0,40,90,0.7); border:1px solid #00aaff; color:#cfe8ff;
  padding:6px 14px; border-radius:5px; cursor:pointer; font-size:13px;
}
.pagination button:hover:not(:disabled) { background:#0055aa; color:#fff; }
.pagination button:disabled { opacity:0.4; cursor:not-allowed; }
#pageInfo { font-size:13px; color:#8dd4ff; min-width:90px; text-align:center; }

/* === POPUP ĐĂNG KÝ === */
.register-frame { max-width:660px; }
.register-form {
  display:grid;
  grid-template-columns:1fr;
  gap:12px;
  margin-top:4px;
}
.form-field {
  display:grid;
  gap:6px;
  text-align:left;
  color:#a8e4ff;
  font-family:Verdana, Verdana, sans-serif;
  font-size:13px;
}
.form-field span {
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:0.8px;
}
.form-field input {
  width:100%;
  height:42px;
  border:1px solid rgba(0,170,255,0.45);
  border-radius:6px;
  background:rgba(0,15,35,0.82);
  color:#fff;
  outline:none;
  padding:0 12px;
  font-size:14px;
  box-shadow:inset 0 0 12px rgba(0,90,180,0.18);
  transition:border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
.form-field input:focus {
  border-color:#6ed8ff;
  background:rgba(3,22,48,0.9);
  box-shadow:0 0 15px rgba(0,170,255,0.42), 0 0 10px rgba(255,198,89,0.14), inset 0 0 12px rgba(0,90,180,0.22);
}
.form-message {
  grid-column:1 / -1;
  min-height:20px;
  color:#8dd4ff;
  font-size:13px;
  line-height:1.4;
  text-align:center;
}
.form-message.error { color:#ff9d9d; }
.form-message.success { color:#9dffbf; }
.register-submit {
  grid-column:1 / -1;
  height:42px;
  border:1px solid rgba(93,202,255,0.9);
  border-radius:6px;
  background:linear-gradient(180deg, rgba(0,135,232,0.94), rgba(0,56,132,0.94));
  color:#e6f7ff;
  cursor:pointer;
  font-family:Verdana, Verdana, sans-serif;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:1px;
  box-shadow:0 0 15px rgba(0,150,255,0.4), inset 0 1px 0 rgba(255,255,255,0.2);
}
.register-submit:hover:not(:disabled) {
  color:#fff;
  box-shadow:0 0 24px rgba(0,170,255,0.65), inset 0 1px 0 rgba(255,255,255,0.25);
}
.register-submit:disabled {
  opacity:0.55;
  cursor:not-allowed;
}

/* === POPUP TẢI GAME === */
.download-frame { max-width:560px; }
.download-list {
  display:grid;
  gap:12px;
  margin-top:4px;
}
.download-option {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:64px;
  padding:12px 16px;
  border:1px solid rgba(255,76,98,0.45);
  border-radius:7px;
  background:linear-gradient(180deg, rgba(70,6,18,0.76), rgba(18,5,16,0.9));
  color:#fff0d0;
  text-decoration:none;
  box-shadow:inset 0 0 18px rgba(255,38,68,0.14);
  transition:transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.download-option:hover {
  transform:translateY(-2px);
  border-color:#ff7488;
  box-shadow:0 0 20px rgba(255,38,68,0.34), inset 0 0 20px rgba(255,38,68,0.18);
}
.download-option strong {
  font-family:Verdana, Verdana, sans-serif;
  font-size:16px;
  text-transform:uppercase;
  letter-spacing:0.8px;
}
.download-option span {
  color:#ffc9c9;
  font-size:13px;
  text-align:right;
}

/* === POPUP DONATE === */
.donate-frame { max-width:680px; }
.donate-panel {
  display:grid;
  grid-template-columns:240px 1fr;
  gap:18px;
  align-items:stretch;
}
.donate-qr {
  min-height:240px;
  border:1px solid rgba(255,216,120,0.45);
  border-radius:8px;
  background:linear-gradient(180deg, rgba(4,20,46,0.9), rgba(0,8,24,0.96));
  display:flex;
  align-items:center;
  justify-content:center;
  padding:12px;
  box-shadow:inset 0 0 18px rgba(0,150,255,0.15), 0 0 18px rgba(255,210,100,0.12);
}
.donate-qr img {
  width:100%;
  max-width:216px;
  aspect-ratio:1;
  object-fit:contain;
  border-radius:6px;
  background:#fff;
  padding:8px;
}
.donate-qr-placeholder {
  width:100%;
  min-height:216px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  line-height:1.5;
  color:#9edfff;
  border:1px dashed rgba(120,210,255,0.48);
  border-radius:6px;
  background:rgba(0,26,58,0.62);
  font-size:13px;
}
.donate-info {
  display:grid;
  gap:10px;
}
.donate-row {
  display:grid;
  gap:6px;
  padding:12px 14px;
  min-height:54px;
  border:1px solid rgba(0,170,255,0.34);
  border-radius:7px;
  background:linear-gradient(180deg, rgba(0,42,88,0.72), rgba(0,14,38,0.86));
  box-shadow:inset 0 0 14px rgba(0,125,255,0.12);
}
.donate-row span {
  color:#8dd4ff;
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:0.8px;
}
.donate-row strong {
  color:#fff5c7;
  font-size:15px;
  overflow-wrap:anywhere;
}

@media (max-width:768px){
 .popup-frame { padding:16px; }
 .register-form { grid-template-columns:1fr; }
 .rank-table { font-size:12px; }
 .rank-table th,.rank-table td { padding:7px 5px; }
 .tab { padding:7px 10px; font-size:11px; }
 .download-option {
   align-items:flex-start;
   flex-direction:column;
   gap:6px;
 }
 .download-option span { text-align:left; }
 .donate-panel { grid-template-columns:1fr; }
 .donate-qr { min-height:210px; }
}

@keyframes skyShimmer {
  from { opacity:0.45; transform:translate3d(-1.5%,0,0); }
  to { opacity:0.82; transform:translate3d(1.5%,0,0); }
}
@keyframes panelShine {
  0%, 62% { transform:translateX(-115%); opacity:0; }
  70% { opacity:0.7; }
  100% { transform:translateX(115%); opacity:0; }
}
@keyframes frameAura {
  from {
    filter:drop-shadow(0 10px 40px rgba(0,80,200,0.30));
  }
  to {
    filter:drop-shadow(0 12px 46px rgba(0,145,255,0.44)) drop-shadow(0 0 18px rgba(255,207,95,0.12));
  }
}
@keyframes logoAura {
  from {
    filter:drop-shadow(0 8px 22px rgba(0,80,200,0.45));
  }
  to {
    filter:drop-shadow(0 10px 28px rgba(0,160,255,0.62)) drop-shadow(0 0 16px rgba(255,216,120,0.22));
  }
}
@keyframes menuTextGlow {
  from {
    text-shadow:0 0 6px #00aaff, 0 0 12px #0066ff;
  }
  to {
    text-shadow:0 0 7px #ffffff, 0 0 15px #00aaff, 0 0 23px rgba(255,218,120,0.52);
  }
}
@keyframes sideMenuAura {
  from {
    filter:drop-shadow(0 8px 22px rgba(0,120,255,0.35)) drop-shadow(0 0 12px rgba(255,210,100,0.12));
  }
  to {
    filter:drop-shadow(0 10px 28px rgba(0,160,255,0.52)) drop-shadow(0 0 18px rgba(255,210,100,0.22));
  }
}

body,
button,
input,
select,
textarea,
table {
  font-family:Verdana, Verdana, sans-serif;
}