/* ===== TOP NAV & USER UI ===== */
.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  background: rgba(0,0,0,0.3);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
}
.lang-switch {
  display: flex;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.lang-switch .lang-btn {
  background: rgba(255,255,255,0.05);
  border: none;
  color: var(--muted);
  padding: 6px 12px;
  font-size: 12px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.2s;
}
.lang-switch .lang-btn.active {
  background: var(--primary);
  color: #fff;
}
.user-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
#userStateUi {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-start;
}
.welcome-text {
  font-size: 14px;
  font-weight: bold;
  color: var(--good);
}

/* Modificación para móvil solicitada */
@media (max-width: 768px) {
  .top-nav {
    flex-wrap: wrap;
    gap: 10px;
    padding: 8px 12px;
  }
  #userStateUi {
    order: 1;
    width: 100%;
    justify-content: space-between;
  }
  .lang-switch {
    order: 2;
  }
  .user-nav {
    order: 3;
    margin-left: auto;
  }
}

/* ===== MODAL ===== */
.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  z-index: 9999;
  padding: 16px;
}
.modal.hidden { display: none; }
.modal-content {
  width: 100%;
  max-width: 400px;
  background: var(--card);
  padding: 24px;
  position: relative;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}
.modal-content.leaderboard { max-width: 500px; }
.modal-content.admin-panel { 
  max-width: 800px; 
  width: 95%;
  max-height: 85vh;
  overflow-y: auto;
}

.close-modal {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(239,68,68,1);
  border: 2px solid #fff;
  border-radius: 50%;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0,0,0,0.3);
  transition: transform 0.2s;
}
.close-modal:hover { transform: scale(1.1); }

/* Tabs */
.tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
}
.tab {
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
  padding: 8px;
  transition: color 0.2s;
}
.tab.active {
  color: var(--primary);
  border-bottom: 3px solid var(--primary);
}
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.auth-form.hidden { display: none; }

/* Tables (Leaderboard & Admin) */
.lb-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 15px;
  background: rgba(0,0,0,0.2);
  border-radius: 12px;
  overflow: hidden;
}
.lb-table th, .lb-table td {
  padding: 12px 15px;
  text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.lb-table th { 
  background: rgba(255,255,255,0.05);
  color: var(--muted); 
  font-size: 13px; 
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.lb-table tr:last-child td { border-bottom: none; }
.lb-table tr:hover { background: rgba(255,255,255,0.04); }

/* Admin Inputs */
.admin-input {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  color: #fff;
  border-radius: 6px;
  padding: 6px 10px;
  width: 70px;
  outline: none;
  font-variant-numeric: tabular-nums;
}
.admin-input:focus { border-color: var(--primary); }
.admin-actions {
  display: flex;
  gap: 6px;
}