/* 登入頁 + 全站 user-bar */

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1rem 2.5rem;
}

.auth-shell {
  width: 100%;
  max-width: 420px;
}

.auth-nav {
  margin-bottom: 1rem;
}

.auth-card {
  padding: 1.75rem 1.5rem 1.5rem;
  border-radius: 20px;
  background: linear-gradient(
    160deg,
    rgba(255, 255, 255, 0.1) 0%,
    rgba(255, 255, 255, 0.03) 100%
  );
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow:
    0 24px 60px rgba(0, 0, 0, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.auth-title {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 800;
  color: #f8fafc;
  letter-spacing: 0.04em;
}

.auth-lead {
  margin: 0 0 1.25rem;
  font-size: 0.88rem;
  line-height: 1.55;
  color: rgba(186, 198, 216, 0.92);
}

.auth-tabs {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 1rem;
  padding: 0.25rem;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(148, 163, 184, 0.15);
}

.auth-tab {
  flex: 1;
  padding: 0.55rem 0.75rem;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  color: rgba(148, 163, 184, 0.9);
  background: transparent;
  border: none;
  border-radius: 9px;
  cursor: pointer;
  transition:
    background 0.2s ease,
    color 0.2s ease;
}

.auth-tab.is-active {
  color: #0c1222;
  background: linear-gradient(135deg, #7dd3fc 0%, #a5f3fc 100%);
  box-shadow: 0 2px 12px rgba(56, 189, 248, 0.25);
}

.auth-msg {
  min-height: 1.35rem;
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  color: rgba(125, 211, 252, 0.95);
}

.auth-msg--err {
  color: #fca5a5;
}

.auth-panel {
  display: none;
  flex-direction: column;
  gap: 0.35rem;
}

.auth-panel.is-active {
  display: flex;
}

.auth-label {
  margin-top: 0.35rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: rgba(148, 163, 184, 0.85);
  text-transform: uppercase;
}

.auth-input {
  width: 100%;
  padding: 0.55rem 0.75rem;
  margin-bottom: 0.25rem;
  font: inherit;
  font-size: 1rem;
  color: #f1f5f9;
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid rgba(100, 140, 200, 0.3);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.auth-input:focus {
  border-color: rgba(56, 189, 248, 0.55);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.auth-submit {
  margin-top: 0.75rem;
  width: 100%;
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 1.35rem 0 1rem;
  color: rgba(148, 163, 184, 0.55);
  font-size: 0.75rem;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: rgba(148, 163, 184, 0.2);
}

.auth-guest {
  width: 100%;
}

.auth-hint {
  margin: 1rem 0 0;
  font-size: 0.75rem;
  line-height: 1.5;
  color: rgba(148, 163, 184, 0.55);
}

/* —— 頂部使用者列 —— */
.user-bar-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 1rem;
}

.user-bar-wrap .user-bar {
  justify-content: flex-start;
}

.user-bar-wrap .user-bar__actions {
  margin-left: auto;
}

.user-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 0.85rem;
  width: 100%;
  max-width: 640px;
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid rgba(148, 163, 184, 0.18);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-size: 0.88rem;
}

.user-bar__badge {
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.user-bar__badge--user {
  color: #0c1222;
  background: linear-gradient(135deg, #7dd3fc, #c4b5fd);
}

.user-bar__badge--guest {
  color: #e2e8f0;
  background: rgba(100, 116, 139, 0.45);
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.user-bar__badge--anon {
  color: rgba(226, 232, 240, 0.85);
  background: rgba(30, 41, 59, 0.8);
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.user-bar__name {
  font-weight: 600;
  color: #f1f5f9;
  max-width: 12rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-bar__actions {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  margin-left: auto;
}

.user-bar__link {
  color: var(--accent, #38bdf8);
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
}

.user-bar__link:hover {
  text-decoration: underline;
}

.user-bar__btn {
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.65rem;
  border-radius: 8px;
  border: 1px solid rgba(248, 113, 113, 0.4);
  color: #fecaca;
  background: rgba(127, 29, 29, 0.25);
  cursor: pointer;
}

.user-bar__btn:hover {
  background: rgba(127, 29, 29, 0.4);
}

/* 遊戲內頂欄：與返回連結並排 */
.game-nav--split {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem 1rem;
}

.game-nav--split .user-bar {
  max-width: none;
  flex: 1;
  min-width: min(100%, 280px);
  justify-content: flex-end;
  border-radius: 14px;
}

.game-nav--split .user-bar__actions {
  margin-left: 0;
}

@media (max-width: 520px) {
  .game-nav--split {
    flex-direction: column;
    align-items: stretch;
  }

  .game-nav--split .user-bar {
    justify-content: center;
  }

  .game-nav--split .user-bar__actions {
    width: 100%;
    justify-content: center;
  }
}