/* ============================================================
   shell.css — thanh đầu trang, menu, chân trang, hộp đăng nhập
   ============================================================ */

/* ---------- Header ---------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  background: color-mix(in srgb, var(--void) 74%, transparent);
  border-bottom: 1px solid var(--line-soft);
}

.head-row {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 66px;
  padding-block: 8px;
}

/* ---------- Logo + Nody ---------- */
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-name {
  font-family: 'Lora', serif;
  font-size: 1.16rem;
  letter-spacing: .01em;
}
.brand-name b { font-weight: 600; color: var(--moon); }

.pup {
  width: 42px; height: 42px;
  flex-shrink: 0;
  filter: drop-shadow(0 3px 10px rgba(95, 180, 236, .32));
  transition: transform var(--t-mid);
}
.brand:hover .pup { transform: rotate(-7deg) scale(1.07); }

/* ---------- Menu ---------- */
.nav {
  display: flex;
  align-items: center;
  gap: 3px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  min-width: 0;
}
.nav::-webkit-scrollbar { display: none; }

/* Cụm mũi tên + menu đi cùng nhau: margin-left:auto đặt trên CẢ CỤM
   (không đặt riêng trên .nav) để mũi tên trái luôn nằm sát menu, không
   bị văng lại gần logo khi menu được đẩy sang phải. */
.nav-wrap { display: flex; align-items: center; margin-left: auto; min-width: 0; }

.nav a {
  position: relative;
  padding: 7px 11px;
  border-radius: 999px;
  font-size: .87rem;
  white-space: nowrap;
  color: var(--ink-soft);
  transition: color var(--t-fast), background var(--t-fast);
}
.nav a:hover { color: var(--ink); background: var(--line-soft); }
.nav a.on { color: var(--moon); background: color-mix(in srgb, var(--moon) 12%, transparent); font-weight: 600; }

/* nút mở menu trên điện thoại */
.nav-toggle { display: none; }

/* Khay công cụ bên phải (đổi ngôn ngữ / hiệu ứng / giao diện / tài khoản).
   LUÔN đứng yên, không co/không cuộn — chỉ có vài nút quan trọng nên
   phải luôn hiện đủ và luôn bấm được. Các icon bên trong giữ đúng
   hình tròn nhờ flex-shrink:0 (trước đây thiếu dòng này khiến nút ☰
   và các icon-btn bị bóp méo thành hình bầu dục khi thiếu chỗ — đã
   sửa). Nếu có lúc nào không đủ chỗ, phần phải nhường/co lại là
   .nav-wrap bên trái (đã có sẵn cơ chế cuộn ngang + mũi tên riêng),
   không phải khay này. */
.head-tools-wrap { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.head-tools {
  display: flex; align-items: center; gap: 8px; margin-left: 10px;
  flex-shrink: 0;
}
.nav-toggle, .icon-btn, .acct-btn, .avatar { flex-shrink: 0; }

.scroll-arrow {
  display: none;
  flex-shrink: 0;
  width: 26px; height: 26px;
  align-items: center; justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink-soft);
  font-size: .9rem;
  cursor: pointer;
  margin: 0 2px;
}
.scroll-arrow.show { display: grid; }
.scroll-arrow:hover { border-color: var(--moon); color: var(--moon); }

.icon-btn {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--panel);
  font-size: 1rem;
  line-height: 1;
  overflow: hidden;
  white-space: nowrap;
  transition: transform var(--t-fast), border-color var(--t-fast);
}
.icon-btn > * { max-width: 100%; }
.icon-btn:hover { transform: translateY(-2px); border-color: var(--moon); }

.acct-btn {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  font-size: .88rem;
  white-space: nowrap;
  max-width: 180px;
  transition: border-color var(--t-fast), transform var(--t-fast);
}
.acct-btn:hover { border-color: var(--moon); transform: translateY(-2px); }
.acct-btn span { overflow: hidden; text-overflow: ellipsis; }

.avatar {
  width: 22px; height: 22px; border-radius: 50%;
  background: linear-gradient(140deg, var(--moon), var(--blossom));
  display: grid; place-items: center;
  font-size: .7rem; color: var(--void); font-weight: 700;
  flex-shrink: 0;
}

@media (max-width: 1180px) {
  .nav-toggle {
    display: grid;
    margin-left: auto;
    width: 38px; height: 38px;
    place-items: center;
    border-radius: 50%;
    border: 1px solid var(--line);
    background: var(--panel);
  }
  .nav {
    position: absolute;
    inset: 100% 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin: 0;
    padding: 10px var(--gut) 20px;
    background: color-mix(in srgb, var(--void) 96%, transparent);
    border-bottom: 1px solid var(--line-soft);
    max-height: 0;
    overflow: hidden auto;
    transition: max-height var(--t-mid), padding var(--t-mid);
  }
  .nav:not(.open) { padding-block: 0; }
  .nav.open { max-height: 74vh; }
  .nav a { padding: 12px 14px; border-radius: var(--r-sm); min-height: 44px; display: flex; align-items: center; }
  .nav a.on { box-shadow: inset 3px 0 0 var(--moon); }
  .head-tools { margin-left: 8px; }
  .nav-arrow { display: none !important; }
  .acct-btn #acctText { display: none; }
  .acct-btn { padding: 8px; }
  .acct-btn .avatar { width: 26px; height: 26px; font-size: .82rem; }
}

@media (min-width: 1181px) and (max-width: 1340px) {
  .nav a { padding: 7px 8px; font-size: .82rem; }
}

/* ---------- Dải trăng: lớp "chiều thứ tư" (thời gian) ---------- */
.moon-strip {
  display: flex; align-items: center; justify-content: center;
  gap: 10px 20px; flex-wrap: wrap;
  padding: 9px 16px;
  font-size: .84rem;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line-soft);
  background: color-mix(in srgb, var(--plum) 40%, transparent);
}
.moon-strip b { color: var(--moon); font-weight: 500; }
.moon-strip .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--line); }
@media (max-width: 640px) { .moon-strip .mute { display: none; } .moon-strip .dot:last-of-type { display: none; } }

/* ---------- Footer ---------- */
.site-foot {
  margin-top: 90px;
  padding: 54px 0 34px;
  border-top: 1px solid var(--line-soft);
  background: color-mix(in srgb, var(--plum) 36%, transparent);
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 38px;
}
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr; gap: 26px; } }

.foot-grid h4 {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: .82rem; font-weight: 600;
  color: var(--moon);
  margin: 0 0 12px;
}
.foot-links { display: flex; flex-direction: column; gap: 7px; }
.foot-links a { font-size: .9rem; color: var(--ink-soft); width: fit-content; }
.foot-links a:hover { color: var(--moon); }

.foot-note {
  margin-top: 34px; padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  font-size: .82rem; color: var(--ink-mute);
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
}

/* ============================================================
   Hộp thoại chung (đăng nhập, chi tiết lá bài…)
   ============================================================ */
.modal {
  position: fixed; inset: 0; z-index: 200;
  display: grid; place-items: center;
  padding: 18px;
  background: rgba(6, 4, 14, .74);
  backdrop-filter: blur(9px);
  opacity: 0; visibility: hidden;
  transition: opacity var(--t-mid), visibility var(--t-mid);
}
.modal.open { opacity: 1; visibility: visible; }

.modal-box {
  position: relative;
  width: min(100%, 430px);
  max-height: 88vh;
  overflow-y: auto;
  padding: 34px 30px 30px;
  border-radius: var(--r-xl);
  border: 1px solid var(--line);
  background: var(--panel-solid);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .55), var(--glow);
  transform: translateY(22px) scale(.97);
  transition: transform var(--t-mid);
}
@media (max-width: 420px) { .modal-box { padding: 26px 20px 22px; border-radius: var(--r-lg); } }
.modal.open .modal-box { transform: none; }
.modal-box.wide { width: min(100%, 620px); }

.modal-x {
  position: absolute; top: 14px; right: 14px;
  width: 32px; height: 32px;
  border-radius: 50%;
  display: grid; place-items: center;
  color: var(--ink-mute);
  transition: background var(--t-fast), color var(--t-fast);
}
.modal-x:hover { background: var(--line-soft); color: var(--ink); }

/* ---------- Đăng nhập / đăng ký ---------- */
.auth-head { text-align: center; margin-bottom: 22px; }
.auth-head .pup { width: 58px; height: 58px; margin: 0 auto 12px; }
.auth-head h3 { font-size: 1.4rem; }
.auth-head p { font-size: .88rem; color: var(--ink-mute); margin: 6px auto 0; }

.auth-tabs {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4px; padding: 4px;
  background: color-mix(in srgb, var(--dusk) 55%, transparent);
  border-radius: 999px;
  margin-bottom: 20px;
}
.auth-tabs button {
  padding: 9px; border-radius: 999px;
  font-size: .88rem; color: var(--ink-mute);
  transition: background var(--t-fast), color var(--t-fast);
}
.auth-tabs button.on { background: var(--moon); color: #061024; font-weight: 600; }

.auth-pane { display: none; }
.auth-pane.on { display: block; }

.auth-foot {
  margin-top: 18px;
  text-align: center;
  font-size: .84rem;
  color: var(--ink-mute);
}
.link-btn { color: var(--moon); text-decoration: underline; text-underline-offset: 3px; }

.divider {
  display: flex; align-items: center; gap: 12px;
  margin: 20px 0;
  color: var(--ink-mute); font-size: .78rem;
}
.divider::before, .divider::after {
  content: ''; flex: 1; height: 1px; background: var(--line-soft);
}

.google-btn {
  width: 100%;
  display: flex; align-items: center; justify-content: center; gap: 10px;
}

.auth-msg {
  margin-top: 14px;
  text-align: center;
  font-size: .85rem;
  min-height: 1.2em;
}
.auth-msg.err { color: var(--blossom); }
.auth-msg.ok  { color: var(--sage); }
#pwHint.err { color: var(--blossom); }
#pwHint.ok  { color: var(--sage); }
#userHint.err { color: var(--blossom); }
#userHint.ok  { color: var(--sage); }

/* ---------- Thông báo nhỏ ---------- */
#toasts {
  position: fixed; left: 50%; bottom: 26px;
  transform: translateX(-50%);
  z-index: 300;
  display: flex; flex-direction: column; gap: 9px;
  align-items: center;
  pointer-events: none;
  width: min(92vw, 420px);
}
.toast {
  padding: 11px 20px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel-solid);
  box-shadow: 0 14px 40px rgba(0, 0, 0, .45);
  font-size: .88rem;
  text-align: center;
  animation: toastIn .3s var(--ease);
}
.toast.err { border-color: var(--blossom); color: var(--blossom); }
@keyframes toastIn { from { opacity: 0; transform: translateY(14px); } }

/* ---------- Nền "bụi trăng" (bg.js) ---------- */
[data-nody-bg] { position: relative; overflow: hidden; }
[data-nody-bg] > *:not(.nody-bg-canvas) { position: relative; z-index: 1; }
.nody-bg-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
}